| ☒ | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | |||||||
For the quarterly period ended June 30, 2026 | ||||||||
| or | ||||||||
| ☐ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | |||||||

| Nevada | 20-4745737 | |||||||
| (State or Other Jurisdiction of Incorporation or Organization) | (IRS Employer Identification No.) | |||||||
| 1201 North Town Center Drive | ||||||||
| Las Vegas, | Nevada | 89144 | ||||||
| (Address of Principal Executive Offices) | (Zip Code) | |||||||
| Title of each class | Trading Symbol | Name of each exchange on which registered | ||||||||||||
| Common stock, par value $0.001 | ALGT | NASDAQ Global Select Market | ||||||||||||
| Large accelerated filer | ☒ | Accelerated filer | ☐ | |||||||||||
| Non-accelerated filer | ☐ | Smaller reporting company | ☐ | |||||||||||
| Emerging growth company | ☐ | |||||||||||||
| PART I. | FINANCIAL INFORMATION | |||||||
| ITEM 1. | ||||||||
| ITEM 2. | ||||||||
| ITEM 3. | ||||||||
| ITEM 4. | ||||||||
| PART II. | OTHER INFORMATION | |||||||
| ITEM 1. | ||||||||
| ITEM 1A. | ||||||||
| ITEM 2. | ||||||||
| ITEM 3. | ||||||||
| ITEM 4. | ||||||||
| ITEM 5. | ||||||||
| ITEM 6. | ||||||||
| June 30, 2026 | December 31, 2025 | ||||||||||
| (unaudited) | |||||||||||
| CURRENT ASSETS | |||||||||||
| Cash and cash equivalents | $ | 508,684 | $ | 172,696 | |||||||
| Restricted cash | 36,112 | 18,064 | |||||||||
| Short-term investments | 544,791 | 632,959 | |||||||||
| Accounts receivable | 107,278 | 57,110 | |||||||||
| Expendable parts, supplies and fuel, net | 55,284 | 34,431 | |||||||||
| Short-term lessor maintenance deposits | 37,555 | — | |||||||||
| Prepaid expenses and other current assets | 68,186 | 52,393 | |||||||||
| TOTAL CURRENT ASSETS | 1,357,890 | 967,653 | |||||||||
| Property and equipment, net | 4,228,694 | 2,947,536 | |||||||||
| Long-term investments | 15,511 | 32,823 | |||||||||
| Goodwill and intangible assets | 485,909 | — | |||||||||
| Deferred major maintenance, net | 149,155 | 148,506 | |||||||||
| Operating lease right-of-use assets, net | 69,399 | 63,389 | |||||||||
| Deposits and other assets | 137,907 | 49,494 | |||||||||
| TOTAL ASSETS: | $ | 6,444,465 | $ | 4,209,401 | |||||||
| CURRENT LIABILITIES | |||||||||||
| Accounts payable | $ | 139,849 | $ | 64,506 | |||||||
| Accrued liabilities | 264,837 | 186,019 | |||||||||
| Accrued pilot retention bonus | 272,982 | 235,887 | |||||||||
| Current operating lease liabilities | 14,362 | 10,936 | |||||||||
| Air traffic liability | 570,631 | 363,328 | |||||||||
| Current loyalty program liability | 50,794 | 39,711 | |||||||||
| Current maturities of long-term debt and finance lease obligations, net of related costs | 318,676 | 118,075 | |||||||||
| TOTAL CURRENT LIABILITIES | 1,632,131 | 1,018,462 | |||||||||
| Long-term debt and finance lease obligations, net of current maturities and related costs | 2,460,778 | 1,681,541 | |||||||||
| Deferred income taxes | 413,507 | 305,416 | |||||||||
| Noncurrent operating lease liabilities | 58,343 | 54,170 | |||||||||
| Noncurrent loyalty program liability | 41,784 | 37,921 | |||||||||
| Other noncurrent liabilities | 60,548 | 59,214 | |||||||||
| TOTAL LIABILITIES: | 4,667,091 | 3,156,724 | |||||||||
| SHAREHOLDERS' EQUITY | |||||||||||
Common stock, par value $0.001 | 26 | 26 | |||||||||
| Treasury shares | (682,331) | (682,511) | |||||||||
| Additional paid in capital | 1,456,769 | 771,967 | |||||||||
| Accumulated other comprehensive income, net | 6,741 | 4,644 | |||||||||
| Retained earnings | 996,169 | 958,551 | |||||||||
| TOTAL EQUITY: | 1,777,374 | 1,052,677 | |||||||||
| TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY: | $ | 6,444,465 | $ | 4,209,401 | |||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| OPERATING REVENUES: | |||||||||||||||||||||||
| Passenger | $ | 822,491 | $ | 617,908 | $ | 1,494,290 | $ | 1,234,658 | |||||||||||||||
| Third party products | 45,758 | 33,649 | 88,093 | 68,852 | |||||||||||||||||||
| Fixed fee contracts | 45,723 | 17,019 | 63,846 | 33,271 | |||||||||||||||||||
| Cargo | 27,586 | — | 27,586 | — | |||||||||||||||||||
| Other | 1,932 | 20,808 | 2,106 | 51,677 | |||||||||||||||||||
| Total operating revenues | 943,490 | 689,384 | 1,675,921 | 1,388,458 | |||||||||||||||||||
| OPERATING EXPENSES: | |||||||||||||||||||||||
| Aircraft fuel | 307,669 | 165,752 | 487,910 | 332,085 | |||||||||||||||||||
| Salaries and benefits | 250,318 | 214,102 | 468,403 | 445,541 | |||||||||||||||||||
| Station operations | 95,551 | 75,248 | 172,033 | 148,753 | |||||||||||||||||||
| Depreciation and amortization | 70,709 | 68,519 | 128,635 | 131,830 | |||||||||||||||||||
| Maintenance and repairs | 49,252 | 36,379 | 84,469 | 71,233 | |||||||||||||||||||
| Sales and marketing | 35,194 | 26,837 | 63,394 | 51,933 | |||||||||||||||||||
| Aircraft rent | 7,015 | 11,023 | 14,476 | 16,942 | |||||||||||||||||||
| Other | 40,716 | 41,089 | 60,649 | 76,259 | |||||||||||||||||||
| Special charges, net of recoveries | 65,952 | 117,924 | 93,734 | 116,369 | |||||||||||||||||||
| Total operating expenses | 922,376 | 756,873 | 1,573,703 | 1,390,945 | |||||||||||||||||||
| OPERATING INCOME (LOSS) | 21,114 | (67,489) | 102,218 | (2,487) | |||||||||||||||||||
| OTHER (INCOME) EXPENSES: | |||||||||||||||||||||||
| Interest income | (8,840) | (10,359) | (17,554) | (22,294) | |||||||||||||||||||
| Interest expense | 40,072 | 35,756 | 69,299 | 76,540 | |||||||||||||||||||
| Capitalized interest | (4,937) | (4,562) | (9,227) | (11,050) | |||||||||||||||||||
| Other, net | 39 | 240 | (1,105) | 941 | |||||||||||||||||||
| Total other expenses | 26,334 | 21,075 | 41,413 | 44,137 | |||||||||||||||||||
| INCOME (LOSS) BEFORE INCOME TAXES | (5,220) | (88,564) | 60,805 | (46,624) | |||||||||||||||||||
| INCOME TAX PROVISION (BENEFIT) | (360) | (23,398) | 23,187 | (13,560) | |||||||||||||||||||
| NET INCOME (LOSS) | $ | (4,860) | $ | (65,166) | $ | 37,618 | $ | (33,064) | |||||||||||||||
| Earnings (loss) per share to common shareholders: | |||||||||||||||||||||||
| Basic | $ | (0.21) | $ | (3.62) | $ | 1.80 | $ | (1.84) | |||||||||||||||
| Diluted | $ | (0.21) | $ | (3.62) | $ | 1.80 | $ | (1.84) | |||||||||||||||
| Shares used for computation: | |||||||||||||||||||||||
| Basic | 22,852 | 17,995 | 20,542 | 17,989 | |||||||||||||||||||
| Diluted | 22,852 | 17,995 | 20,634 | 17,989 | |||||||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| NET INCOME (LOSS) | $ | (4,860) | $ | (65,166) | $ | 37,618 | $ | (33,064) | |||||||||||||||
| Other comprehensive income (loss): | |||||||||||||||||||||||
| Change in available-for-sale securities, net of tax | 3,338 | 305 | 2,097 | (505) | |||||||||||||||||||
| TOTAL COMPREHENSIVE INCOME (LOSS) | $ | (1,522) | $ | (64,861) | $ | 39,715 | $ | (33,569) | |||||||||||||||
| Three Months Ended June 30, 2026 | |||||||||||||||||||||||||||||||||||||||||
| Common stock outstanding | Par value | Additional paid-in capital | Accumulated other comprehensive income | Retained earnings | Treasury shares | Total shareholders' equity | |||||||||||||||||||||||||||||||||||
| Balance at March 31, 2026 | 18,447 | $ | 26 | $ | 774,181 | $ | 3,403 | $ | 1,001,029 | $ | (682,566) | $ | 1,096,073 | ||||||||||||||||||||||||||||
| Share-based compensation | 289 | — | 13,529 | — | — | — | 13,529 | ||||||||||||||||||||||||||||||||||
| Shares repurchased by the Company and held as treasury shares | (71) | — | — | — | — | (5,441) | (5,441) | ||||||||||||||||||||||||||||||||||
| Stock issued under employee stock purchase plan | 75 | — | — | — | — | 5,676 | 5,676 | ||||||||||||||||||||||||||||||||||
| Shares issued for acquisition | 8,601 | — | 669,059 | — | — | — | 669,059 | ||||||||||||||||||||||||||||||||||
| Other comprehensive income | — | — | — | 3,338 | — | — | 3,338 | ||||||||||||||||||||||||||||||||||
| Net loss | — | — | — | — | (4,860) | — | (4,860) | ||||||||||||||||||||||||||||||||||
| Balance at June 30, 2026 | 27,341 | $ | 26 | $ | 1,456,769 | $ | 6,741 | $ | 996,169 | $ | (682,331) | $ | 1,777,374 | ||||||||||||||||||||||||||||
| Six Months Ended June 30, 2026 | |||||||||||||||||||||||||||||||||||||||||
| Common stock outstanding | Par value | Additional paid-in capital | Accumulated other comprehensive income | Retained earnings | Treasury shares | Total shareholders' equity | |||||||||||||||||||||||||||||||||||
| Balance at December 31, 2025 | 18,378 | $ | 26 | $ | 771,967 | $ | 4,644 | $ | 958,551 | $ | (682,511) | $ | 1,052,677 | ||||||||||||||||||||||||||||
| Share-based compensation | 359 | — | 15,743 | — | — | — | 15,743 | ||||||||||||||||||||||||||||||||||
| Shares repurchased by the Company and held as treasury shares | (72) | — | — | — | — | (5,496) | (5,496) | ||||||||||||||||||||||||||||||||||
| Stock issued under employee stock purchase plan | 75 | — | — | — | — | 5,676 | 5,676 | ||||||||||||||||||||||||||||||||||
| Shares issued for acquisition | 8,601 | — | 669,059 | — | — | — | 669,059 | ||||||||||||||||||||||||||||||||||
| Other comprehensive income | — | — | — | 2,097 | — | — | 2,097 | ||||||||||||||||||||||||||||||||||
| Net income | — | — | — | — | 37,618 | — | 37,618 | ||||||||||||||||||||||||||||||||||
| Balance at June 30, 2026 | 27,341 | $ | 26 | $ | 1,456,769 | $ | 6,741 | $ | 996,169 | $ | (682,331) | $ | 1,777,374 | ||||||||||||||||||||||||||||
| Three Months Ended June 30, 2025 | |||||||||||||||||||||||||||||||||||||||||
| Common stock outstanding | Par value | Additional paid-in capital | Accumulated other comprehensive income | Retained earnings | Treasury shares | Total shareholders' equity | |||||||||||||||||||||||||||||||||||
| Balance at March 31, 2025 | 18,261 | $ | 26 | $ | 763,767 | $ | 3,139 | $ | 1,035,350 | $ | (689,551) | $ | 1,112,731 | ||||||||||||||||||||||||||||
| Share-based compensation | (15) | — | 3,135 | — | — | — | 3,135 | ||||||||||||||||||||||||||||||||||
| Shares repurchased by the Company and held as treasury shares | (7) | — | — | — | — | (350) | (350) | ||||||||||||||||||||||||||||||||||
| Stock issued under employee stock purchase plan | 112 | — | — | — | — | 5,266 | 5,266 | ||||||||||||||||||||||||||||||||||
| Other comprehensive income | — | — | — | 305 | — | — | 305 | ||||||||||||||||||||||||||||||||||
| Net loss | — | — | — | — | (65,166) | — | (65,166) | ||||||||||||||||||||||||||||||||||
| Balance at June 30, 2025 | 18,351 | $ | 26 | $ | 766,902 | $ | 3,444 | $ | 970,184 | $ | (684,635) | $ | 1,055,921 | ||||||||||||||||||||||||||||
| Six Months Ended June 30, 2025 | |||||||||||||||||||||||||||||||||||||||||
| Common stock outstanding | Par value | Additional paid-in capital | Accumulated other comprehensive income | Retained earnings | Treasury shares | Total shareholders' equity | |||||||||||||||||||||||||||||||||||
| Balance at December 31, 2024 | 18,408 | $ | 26 | $ | 760,600 | $ | 3,949 | $ | 1,003,248 | $ | (678,431) | $ | 1,089,392 | ||||||||||||||||||||||||||||
| Share-based compensation | (15) | — | 6,302 | — | — | — | 6,302 | ||||||||||||||||||||||||||||||||||
| Shares repurchased by the Company and held as treasury shares | (154) | — | — | — | — | (11,470) | (11,470) | ||||||||||||||||||||||||||||||||||
| Stock issued under employee stock purchase plan | 112 | — | — | — | — | 5,266 | 5,266 | ||||||||||||||||||||||||||||||||||
Other comprehensive loss | — | — | — | (505) | — | — | (505) | ||||||||||||||||||||||||||||||||||
Net loss | — | — | — | — | (33,064) | — | (33,064) | ||||||||||||||||||||||||||||||||||
| Balance at June 30, 2025 | 18,351 | $ | 26 | $ | 766,902 | $ | 3,444 | $ | 970,184 | $ | (684,635) | $ | 1,055,921 | ||||||||||||||||||||||||||||
| Six Months Ended June 30, | |||||||||||
| 2026 | 2025 | ||||||||||
| Net cash provided by operating activities | 314,145 | 283,647 | |||||||||
| Cash flows from investing activities: | |||||||||||
| Purchase of investment securities | (261,697) | (477,669) | |||||||||
| Proceeds from maturities of investment securities | 422,767 | 387,660 | |||||||||
| Aircraft pre-delivery deposits | (219,858) | (9,680) | |||||||||
| Purchase of property and equipment, including capitalized interest | (166,138) | (177,222) | |||||||||
| Acquisition of Sun Country, net of cash acquired | (167,071) | — | |||||||||
| Other investing activities | 20,818 | 35,069 | |||||||||
| Net cash used in investing activities | (371,179) | (241,842) | |||||||||
| Cash flows from financing activities: | |||||||||||
| Proceeds from the issuance of debt and finance lease obligations | 895,163 | 323,781 | |||||||||
| Repurchase of common stock | (838) | (11,470) | |||||||||
| Principal payments on debt and finance lease obligations | (474,431) | (432,629) | |||||||||
| Debt issuance costs | (14,400) | (3,171) | |||||||||
| Other financing activities | 5,576 | 7,266 | |||||||||
| Net cash provided by (used in) financing activities | 411,070 | (116,223) | |||||||||
| NET CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH | 354,036 | (74,418) | |||||||||
| CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD | 190,760 | 302,319 | |||||||||
| CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD | $ | 544,796 | $ | 227,901 | |||||||
| CASH PAYMENTS FOR: | |||||||||||
| Interest paid, net of amount capitalized | $ | 59,798 | $ | 57,969 | |||||||
| Income tax refunds | (450) | (14,954) | |||||||||
| SUPPLEMENTAL DISCLOSURE OF NONCASH TRANSACTIONS: | |||||||||||
| Right-of-use (ROU) assets acquired | $ | 1,406 | $ | — | |||||||
| Purchases of property and equipment in accrued liabilities and other | 26,200 | 53,324 | |||||||||
| Shares issued for acquisition of Sun Country | 669,069 | — | |||||||||
| (in thousands) | May 13, 2026 | ||||
| Merger consideration | |||||
| Cash | $ | 223,431 | |||
| Shares | 634,788 | ||||
| Add: Pre-combination value of replaced and accelerated equity awards | 21,173 | ||||
| Add: Consideration paid with respect to Amazon warrants | 16,185 | ||||
| Add: Termination payment under Tax Receivable Agreement | 80,461 | ||||
| Total purchase consideration | $ | 976,038 | |||
| (in thousands) | Purchase Price Allocation | ||||
| Cash and cash equivalents | $ | 119,618 | |||
| Restricted cash | 20,272 | ||||
| Short-term investments | 47,134 | ||||
| Accounts receivable | 77,010 | ||||
| Short term lessor maintenance deposits | 37,268 | ||||
| Expendable parts, supplies and fuel, net | 12,356 | ||||
| Prepaid expenses and other current assets | 23,510 | ||||
| Property and equipment, net | 1,048,057 | ||||
| Goodwill | 465,719 | ||||
| Other intangible assets | 21,600 | ||||
| Long-term investments | 4,980 | ||||
| Operating lease right-of-use assets, net | 10,819 | ||||
| Deposits and other assets | 85,322 | ||||
| Total assets acquired | 1,973,665 | ||||
| Accounts payable | 97,108 | ||||
| Accrued liabilities | 65,253 | ||||
| Current operating lease liabilities | 3,756 | ||||
| Air traffic liability | 137,306 | ||||
| Current loyalty program liability | 9,495 | ||||
| Current maturities of long-term debt and finance lease obligations, net of related costs | 137,114 | ||||
| Long-term debt and finance lease obligations, net of current maturities and related costs | 433,150 | ||||
| Deferred income taxes | 89,496 | ||||
| Noncurrent operating lease liabilities | 8,725 | ||||
| Noncurrent loyalty program liability | 4,890 | ||||
| Other noncurrent liabilities | 11,334 | ||||
| Liabilities assumed | 997,627 | ||||
| Total consideration | $ | 976,038 | |||
| Fair Value (in thousands) | Weighted Average Useful Life | |||||||
| Trademarks | $13,200 | 2 Years | ||||||
| Customer Relationships | 8,400 | 2 Years | ||||||
| Total | $21,600 | |||||||
Shares(1) | ||||||||
| Restricted stock units granted to Sun Country holders | 268,627 | |||||||
| Vested | (127,321) | |||||||
| Forfeited | (4,943) | |||||||
| Non-vested at June 30, 2026 | 136,363 | |||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| (in thousands) | 2026 | 2025 | 2026 | 2025 | |||||||||||||||||||
| Operating revenues | $1,077,194 | $953,005 | $2,147,991 | $1,978,728 | |||||||||||||||||||
| Net income | 65,011 | (54,409) | 96,895 | (58,578) | |||||||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| (in thousands) | 2026 | 2025 | 2026 | 2025 | |||||||||||||||||||
| Accelerated depreciation on airframes identified for early retirement | $ | 1,305 | $ | 2,501 | $ | 2,652 | $ | 3,892 | |||||||||||||||
| Accelerated amortization of software identified for redevelopment | 9,960 | — | 19,920 | — | |||||||||||||||||||
| Integration costs | 55,237 | — | 64,794 | — | |||||||||||||||||||
| Organizational restructuring | — | 12,095 | — | 12,095 | |||||||||||||||||||
| Credit loss on note receivable | — | — | 7,019 | — | |||||||||||||||||||
| Airline special charges | 66,502 | 14,596 | 94,385 | 15,987 | |||||||||||||||||||
| Sunseeker special charges, net of insurance recoveries | (550) | 103,328 | (651) | 100,382 | |||||||||||||||||||
| Total special charges | $ | 65,952 | $ | 117,924 | $ | 93,734 | $ | 116,369 | |||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| (in thousands) | 2026 | 2025 | 2026 | 2025 | |||||||||||||||||||
| Scheduled service | $ | 411,461 | $ | 247,208 | $ | 749,760 | $ | 530,576 | |||||||||||||||
| Ancillary air-related charges | 390,538 | 352,873 | 703,188 | 668,152 | |||||||||||||||||||
| Loyalty redemptions | 20,492 | 17,827 | 41,342 | 35,930 | |||||||||||||||||||
| Total passenger revenue | $ | 822,491 | $ | 617,908 | $ | 1,494,290 | $ | 1,234,658 | |||||||||||||||
| Six Months Ended June 30, | |||||||||||
| (in thousands) | 2026 | 2025 | |||||||||
| Balance at January 1 | $ | 77,632 | $ | 80,711 | |||||||
| Points acquired from Sun Country as of May 13 | 14,385 | — | |||||||||
Points awarded (deferral of revenue)(1) | 42,103 | 37,306 | |||||||||
Points redeemed (recognition of revenue)(1)(2) | (41,542) | (35,947) | |||||||||
Balance at June 30(3) | $ | 92,578 | $ | 82,070 | |||||||
| (in thousands) | Three Months Ended June 30, 2025 | Six Months Ended June 30, 2025 | |||||||||
| Rooms | $ | 8,732 | $ | 24,163 | |||||||
| Food and beverage | 7,766 | 17,728 | |||||||||
| Other | 4,136 | 9,431 | |||||||||
| Total resort revenue | $ | 20,634 | $ | 51,322 | |||||||
| (in thousands) | June 30, 2026 | December 31, 2025 | |||||||||
| Flight equipment | $4,890,332 | $ | 3,584,212 | ||||||||
| Computer hardware and software | 365,208 | 339,441 | |||||||||
| Land and buildings/leasehold improvements | 103,751 | 83,304 | |||||||||
| Other property and equipment | 151,219 | 118,894 | |||||||||
| Total property and equipment | 5,510,510 | 4,125,851 | |||||||||
| Less accumulated depreciation and amortization | (1,281,816) | (1,178,315) | |||||||||
| Property and equipment, net | $4,228,694 | $ | 2,947,536 | ||||||||
| (in thousands) | June 30, 2026 | December 31, 2025 | |||||||||
| Fixed-rate debt and finance lease obligations due through 2032 | $ | 1,860,678 | $ | 1,062,935 | |||||||
| Variable-rate debt due through 2038 | 918,776 | 736,681 | |||||||||
| Total long-term debt and finance lease obligations, net of related costs | 2,779,454 | 1,799,616 | |||||||||
| Less current maturities, net of related costs | 318,676 | 118,075 | |||||||||
| Long-term debt and finance lease obligations, net of current maturities and related costs | $ | 2,460,778 | $ | 1,681,541 | |||||||
| Weighted average fixed-interest rate on debt | 5.7% | 6.7% | |||||||||
| Weighted average variable-interest rate on debt | 5.8% | 5.9% | |||||||||
| (in thousands) | As of June 30, 2026 | ||||
| Remaining in 2026 | $ | 196,647 | |||
| 2027 | 284,173 | ||||
| 2028 | 283,169 | ||||
| 2029 | 361,867 | ||||
| 2030 | 266,920 | ||||
| 2031 | 829,283 | ||||
| Thereafter | 557,395 | ||||
| Total debt and finance lease obligations, net of related costs | $ | 2,779,454 | |||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||||||||||||||||||||||||||
| (in thousands) | Total | Level 1 | Level 2 | Total | Level 1 | Level 2 | |||||||||||||||||||||||||||||
| Cash equivalents | |||||||||||||||||||||||||||||||||||
| Money market funds | $ | 238,036 | $ | 238,036 | $ | — | $ | 42,833 | $ | 42,833 | $ | — | |||||||||||||||||||||||
| US Government and agency obligations | 29,331 | — | 29,331 | 16,901 | — | 16,901 | |||||||||||||||||||||||||||||
| Commercial paper | 22,591 | — | 22,591 | 14,712 | — | 14,712 | |||||||||||||||||||||||||||||
| Municipal debt securities | 9,280 | — | 9,280 | 4,520 | — | 4,520 | |||||||||||||||||||||||||||||
| Corporate debt securities | 5,246 | — | 5,246 | 5,713 | — | 5,713 | |||||||||||||||||||||||||||||
| Total cash equivalents | 304,484 | 238,036 | 66,448 | 84,679 | 42,833 | 41,846 | |||||||||||||||||||||||||||||
| Short-term | |||||||||||||||||||||||||||||||||||
| Corporate debt securities | 264,679 | — | 264,679 | 337,988 | — | 337,988 | |||||||||||||||||||||||||||||
| US Government and agency obligations | 122,912 | — | 122,912 | 67,696 | — | 67,696 | |||||||||||||||||||||||||||||
| Commercial paper | 106,835 | — | 106,835 | 179,697 | — | 179,697 | |||||||||||||||||||||||||||||
| Certificates of deposit | 23,033 | — | 23,033 | 27,960 | — | 27,960 | |||||||||||||||||||||||||||||
| Municipal debt securities | 27,332 | — | 27,332 | 19,618 | — | 19,618 | |||||||||||||||||||||||||||||
| Total short-term | 544,791 | — | 544,791 | 632,959 | — | 632,959 | |||||||||||||||||||||||||||||
| Long-term | |||||||||||||||||||||||||||||||||||
| Corporate debt securities | 15,017 | — | 15,017 | 30,127 | — | 30,127 | |||||||||||||||||||||||||||||
| US Government and agency obligations | 494 | — | 494 | 2,696 | — | 2,696 | |||||||||||||||||||||||||||||
| Total long-term | 15,511 | — | 15,511 | 32,823 | — | 32,823 | |||||||||||||||||||||||||||||
| Total financial instruments | $ | 864,786 | $ | 238,036 | $ | 626,750 | $ | 750,461 | $ | 42,833 | $ | 707,628 | |||||||||||||||||||||||
| As of June 30, 2026 | As of December 31, 2025 | ||||||||||||||||||||||||||||
| (in thousands) | Carrying Value | Estimated Fair Value | Carrying Value | Estimated Fair Value | Fair Value Level | ||||||||||||||||||||||||
| Long-term debt | $ | 2,160,306 | $ | 2,113,432 | $ | 1,413,205 | $ | 1,424,251 | 3 | ||||||||||||||||||||
| Three Months Ended June 30, | Six Months Ended June 30, | ||||||||||||||||||||||
| 2026 | 2025 | 2026 | 2025 | ||||||||||||||||||||
| Basic: | |||||||||||||||||||||||
| Net income (loss) | $ | (4,860) | $ | (65,166) | $ | 37,618 | $ | (33,064) | |||||||||||||||
| Less income allocated to participating securities | — | — | (540) | — | |||||||||||||||||||
| Net income (loss) attributable to common stock | $ | (4,860) | $ | (65,166) | $ | 37,078 | $ | (33,064) | |||||||||||||||
| Earnings (loss) per share, basic | $ | (0.21) | $ | (3.62) | $ | 1.80 | $ | (1.84) | |||||||||||||||
| Weighted-average shares outstanding | 22,852 | 17,995 | 20,542 | 17,989 | |||||||||||||||||||
| Diluted: | |||||||||||||||||||||||
| Net income (loss) | $ | (4,860) | $ | (65,166) | $ | 37,618 | $ | (33,064) | |||||||||||||||
| Less income allocated to participating securities | — | — | (538) | — | |||||||||||||||||||
| Net income (loss) attributable to common stock | $ | (4,860) | $ | (65,166) | $ | 37,080 | $ | (33,064) | |||||||||||||||
| Earnings (loss) per share, diluted | $ | (0.21) | $ | (3.62) | $ | 1.80 | $ | (1.84) | |||||||||||||||
| Weighted-average shares outstanding | 22,852 | 17,995 | 20,542 | 17,989 | |||||||||||||||||||
| Dilutive effect of outstanding stock awards | — | — | 197 | — | |||||||||||||||||||
| Adjusted weighted-average shares outstanding under treasury stock method | 22,852 | 17,995 | 20,739 | 17,989 | |||||||||||||||||||
| Participating securities excluded under two-class method | — | — | (105) | — | |||||||||||||||||||
| Adjusted weighted-average shares outstanding under two-class method | 22,852 | 17,995 | 20,634 | 17,989 | |||||||||||||||||||
| Three Months Ended June 30, 2026 | |||||||||||||||||
| (in thousands) | Allegiant Air | Sun Country | Consolidated | ||||||||||||||
| OPERATING REVENUES: | |||||||||||||||||
| Scheduled service | $ | 347,853 | $ | 63,608 | $ | 411,461 | |||||||||||
| Ancillary air-related charges | 349,365 | 41,173 | 390,538 | ||||||||||||||
| Loyalty redemptions | 19,798 | 694 | 20,492 | ||||||||||||||
| Third party products | 44,483 | 1,275 | 45,758 | ||||||||||||||
| Fixed fee contracts | 14,523 | 31,200 | 45,723 | ||||||||||||||
| Cargo | — | 27,586 | 27,586 | ||||||||||||||
| Other | 185 | 1,747 | 1,932 | ||||||||||||||
| Total operating revenues | $ | 776,207 | $ | 167,283 | $ | 943,490 | |||||||||||
| OPERATING EXPENSES: | |||||||||||||||||
| Aircraft fuel | 265,123 | 42,546 | 307,669 | ||||||||||||||
| Salaries and benefits | 201,337 | 48,981 | 250,318 | ||||||||||||||
| Station operations | 76,139 | 19,412 | 95,551 | ||||||||||||||
| Depreciation and amortization | 58,521 | 12,188 | 70,709 | ||||||||||||||
| Maintenance and repairs | 39,349 | 9,903 | 49,252 | ||||||||||||||
| Sales and marketing | 29,860 | 5,334 | 35,194 | ||||||||||||||
| Aircraft rent | 7,015 | — | 7,015 | ||||||||||||||
Other operating expense(1) | 29,263 | 11,453 | 40,716 | ||||||||||||||
| Special charges, net of recoveries | 39,514 | 26,438 | 65,952 | ||||||||||||||
| Total operating expenses | 746,121 | 176,255 | 922,376 | ||||||||||||||
| OPERATING INCOME (LOSS) | 30,086 | (8,972) | 21,114 | ||||||||||||||
| OTHER (INCOME) EXPENSES: | |||||||||||||||||
| Interest income | (8,093) | (747) | (8,840) | ||||||||||||||
| Interest expense | 35,200 | 4,872 | 40,072 | ||||||||||||||
| Capitalized interest | (4,937) | — | (4,937) | ||||||||||||||
| Other non-operating expense | 74 | (35) | 39 | ||||||||||||||
| INCOME (LOSS) BEFORE INCOME TAXES | $ | 7,842 | $ | (13,062) | $ | (5,220) | |||||||||||
| Capital expenditures | $ | 183,243 | $ | 4,887 | $ | 188,130 | |||||||||||
| Three Months Ended June 30, 2025 | |||||||||||||||||
| (in thousands) | Allegiant Air | Sunseeker | Consolidated | ||||||||||||||
| OPERATING REVENUES: | |||||||||||||||||
| Passenger | $ | 617,908 | $ | — | $ | 617,908 | |||||||||||
| Third party products | 33,649 | — | 33,649 | ||||||||||||||
| Fixed fee contracts | 17,019 | — | 17,019 | ||||||||||||||
| Other | 174 | 20,634 | 20,808 | ||||||||||||||
| Total operating revenues | $ | 668,750 | $ | 20,634 | $ | 689,384 | |||||||||||
| OPERATING EXPENSES: | |||||||||||||||||
| Aircraft fuel | 165,752 | — | 165,752 | ||||||||||||||
| Salaries and benefits | 203,485 | 10,617 | 214,102 | ||||||||||||||
| Station operations | 75,248 | — | 75,248 | ||||||||||||||
| Depreciation and amortization | 64,961 | 3,558 | 68,519 | ||||||||||||||
| Maintenance and repairs | 36,379 | — | 36,379 | ||||||||||||||
| Sales and marketing | 25,119 | 1,718 | 26,837 | ||||||||||||||
| Aircraft rent | 11,023 | — | 11,023 | ||||||||||||||
Other operating expense(1) | 29,031 | 12,058 | 41,089 | ||||||||||||||
| Special charges, net of recoveries | 14,595 | 103,329 | 117,924 | ||||||||||||||
| Total operating expenses | 625,593 | 131,280 | 756,873 | ||||||||||||||
| OPERATING INCOME (LOSS) | 43,157 | (110,646) | (67,489) | ||||||||||||||
| OTHER (INCOME) EXPENSES: | |||||||||||||||||
| Interest income | (10,359) | — | (10,359) | ||||||||||||||
| Interest expense | 28,121 | 7,635 | 35,756 | ||||||||||||||
| Capitalized interest | (4,562) | — | (4,562) | ||||||||||||||
| Other non-operating expense | 240 | — | 240 | ||||||||||||||
| INCOME (LOSS) BEFORE INCOME TAXES | $ | 29,717 | $ | (118,281) | $ | (88,564) | |||||||||||
| Capital expenditures | $ | 137,717 | $ | 1,036 | $ | 138,753 | |||||||||||
| Six Months Ended June 30, 2026 | |||||||||||||||||
| (in thousands) | Allegiant Air | Sun Country | Consolidated | ||||||||||||||
| OPERATING REVENUES: | |||||||||||||||||
| Scheduled service | $ | 686,152 | $ | 63,608 | $ | 749,760 | |||||||||||
| Ancillary air-related charges | 662,015 | 41,173 | 703,188 | ||||||||||||||
| Loyalty redemptions | 40,648 | 694 | 41,342 | ||||||||||||||
| Third party products | 86,818 | 1,275 | 88,093 | ||||||||||||||
| Fixed fee contracts | 32,646 | 31,200 | 63,846 | ||||||||||||||
| Cargo | — | 27,586 | 27,586 | ||||||||||||||
| Other | 359 | 1,747 | 2,106 | ||||||||||||||
| Total operating revenues | $ | 1,508,638 | $ | 167,283 | $ | 1,675,921 | |||||||||||
| OPERATING EXPENSES: | |||||||||||||||||
| Aircraft fuel | 445,364 | 42,546 | 487,910 | ||||||||||||||
| Salaries and benefits | 419,422 | 48,981 | 468,403 | ||||||||||||||
| Station operations | 152,621 | 19,412 | 172,033 | ||||||||||||||
| Depreciation and amortization | 116,447 | 12,188 | 128,635 | ||||||||||||||
| Maintenance and repairs | 74,566 | 9,903 | 84,469 | ||||||||||||||
| Sales and marketing | 58,060 | 5,334 | 63,394 | ||||||||||||||
| Aircraft rent | 14,476 | — | 14,476 | ||||||||||||||
Other operating expense(1) | 49,196 | 11,453 | 60,649 | ||||||||||||||
| Special charges, net of recoveries | 67,296 | 26,438 | 93,734 | ||||||||||||||
| Total operating expenses | 1,397,448 | 176,255 | 1,573,703 | ||||||||||||||
| OPERATING INCOME (LOSS) | 111,190 | (8,972) | 102,218 | ||||||||||||||
| OTHER (INCOME) EXPENSES: | |||||||||||||||||
| Interest income | (16,807) | (747) | (17,554) | ||||||||||||||
| Interest expense | 64,427 | 4,872 | 69,299 | ||||||||||||||
| Capitalized interest | (9,227) | — | (9,227) | ||||||||||||||
| Other non-operating expense | (1,070) | (35) | (1,105) | ||||||||||||||
| INCOME (LOSS) BEFORE INCOME TAXES | $ | 73,867 | $ | (13,062) | $ | 60,805 | |||||||||||
| Capital expenditures | $ | 359,183 | $ | 4,887 | $ | 364,070 | |||||||||||
| Six Months Ended June 30, 2025 | |||||||||||||||||
| (in thousands) | Allegiant Air | Sunseeker | Consolidated | ||||||||||||||
| OPERATING REVENUES: | |||||||||||||||||
| Passenger | $ | 1,234,658 | $ | — | $ | 1,234,658 | |||||||||||
| Third party products | 68,852 | — | 68,852 | ||||||||||||||
| Fixed fee contracts | 33,271 | — | 33,271 | ||||||||||||||
| Other | 355 | 51,322 | 51,677 | ||||||||||||||
| Total operating revenues | $ | 1,337,136 | $ | 51,322 | $ | 1,388,458 | |||||||||||
| OPERATING EXPENSES: | |||||||||||||||||
| Aircraft fuel | 332,085 | — | 332,085 | ||||||||||||||
| Salaries and benefits | 423,859 | 21,682 | 445,541 | ||||||||||||||
| Station operations | 148,753 | — | 148,753 | ||||||||||||||
| Depreciation and amortization | 124,672 | 7,158 | 131,830 | ||||||||||||||
| Maintenance and repairs | 71,233 | — | 71,233 | ||||||||||||||
| Sales and marketing | 48,489 | 3,444 | 51,933 | ||||||||||||||
| Aircraft rent | 16,942 | — | 16,942 | ||||||||||||||
Other operating expense(1) | 51,107 | 25,152 | 76,259 | ||||||||||||||
| Special charges, net of recoveries | 15,987 | 100,382 | 116,369 | ||||||||||||||
| Total operating expenses | 1,233,127 | 157,818 | 1,390,945 | ||||||||||||||
| OPERATING INCOME (LOSS) | 104,009 | (106,496) | (2,487) | ||||||||||||||
| OTHER (INCOME) EXPENSES: | |||||||||||||||||
| Interest income | (22,294) | — | (22,294) | ||||||||||||||
| Interest expense | 57,070 | 19,470 | 76,540 | ||||||||||||||
| Capitalized interest | (11,050) | — | (11,050) | ||||||||||||||
| Other non-operating expense | 941 | — | 941 | ||||||||||||||
| INCOME (LOSS) BEFORE INCOME TAXES | $ | 79,342 | $ | (125,966) | $ | (46,624) | |||||||||||
| Capital expenditures | $ | 220,853 | $ | 1,442 | $ | 222,295 | |||||||||||
| (in thousands) | As of June 30, 2026 | As of December 31, 2025 | |||||||||
| Allegiant Air | $ | 4,524,180 | $ | 4,209,401 | |||||||
| Sun Country | 1,920,285 | — | |||||||||
| Consolidated | $ | 6,444,465 | $ | 4,209,401 | |||||||
| June 30, 2026 | December 31, 2025 | ||||||||||
| Passenger service | |||||||||||
Airbus A320(1) | 77 | 79 | |||||||||
Airbus A319(2) | 28 | 28 | |||||||||
| Boeing 737 MAX 8200 | 19 | 16 | |||||||||
Boeing 737-800 (Sun Country)(3) | 44 | — | |||||||||
| Boeing 737-900ER (Sun Country) | 3 | — | |||||||||
| Total aircraft in passenger service | 171 | 123 | |||||||||
| Boeing 737-800 in cargo service | 22 | — | |||||||||
| Aircraft held for operating lease | |||||||||||
Boeing 737-800(4) | 1 | — | |||||||||
| Boeing 737-900ER | 2 | — | |||||||||
| Total | 196 | 123 | |||||||||
| Three Months Ended June 30, 2026 | Three Months Ended June 30, 2025 | Percent Change | |||||||||||||||||||||||||||||||||||||||
| Operating Revenues (in thousands) | Allegiant Air | Sun Country* | Consolidated | Allegiant Air | Sunseeker | Consolidated | YoY | ||||||||||||||||||||||||||||||||||
| Passenger | $ | 717,016 | $ | 105,475 | $ | 822,491 | $ | 617,908 | $ | — | $ | 617,908 | 33.1 | % | |||||||||||||||||||||||||||
| Third party products | 44,483 | 1,275 | 45,758 | 33,649 | — | 33,649 | 36.0 | % | |||||||||||||||||||||||||||||||||
| Fixed fee contracts | 14,523 | 31,200 | 45,723 | 17,019 | — | 17,019 | 168.7 | % | |||||||||||||||||||||||||||||||||
| Cargo | — | 27,586 | 27,586 | — | — | — | NM | ||||||||||||||||||||||||||||||||||
| Resort and other | 185 | 1,747 | 1,932 | 174 | 20,634 | 20,808 | (90.7) | % | |||||||||||||||||||||||||||||||||
| Total operating revenues | $ | 776,207 | $ | 167,283 | $ | 943,490 | $ | 668,750 | $ | 20,634 | $ | 689,384 | 36.9 | % | |||||||||||||||||||||||||||
| Three Months Ended June 30, 2026 | Three Months Ended June 30, 2025 | Percent Change | |||||||||||||||||||||||||||
| Airline Unitized costs (in cents) | Allegiant Air | Sun Country* | Consolidated | Allegiant Air | Allegiant Air | ||||||||||||||||||||||||
| Aircraft fuel | 4.90 | ¢ | 4.26 | ¢ | 4.80 | ¢ | 2.86 | ¢ | 71.3 | % | |||||||||||||||||||
| Salaries and benefits | 3.72 | 4.90 | 3.91 | 3.51 | 6.0 | ||||||||||||||||||||||||
| Station operations | 1.41 | 1.94 | 1.49 | 1.30 | 8.5 | ||||||||||||||||||||||||
| Depreciation and amortization | 1.08 | 1.22 | 1.10 | 1.12 | (3.6) | ||||||||||||||||||||||||
| Maintenance and repairs | 0.73 | 0.99 | 0.77 | 0.63 | 15.9 | ||||||||||||||||||||||||
| Sales and marketing | 0.55 | 0.53 | 0.55 | 0.43 | 27.9 | ||||||||||||||||||||||||
| Aircraft rent | 0.13 | — | 0.11 | 0.19 | (31.6) | ||||||||||||||||||||||||
| Other | 0.55 | 1.15 | 0.64 | 0.50 | 10.0 | ||||||||||||||||||||||||
| Special charges | 0.73 | 2.64 | 1.03 | 0.25 | NM | ||||||||||||||||||||||||
| Airline operating CASM | 13.80 | ¢ | 17.63 | ¢ | 14.40 | ¢ | 10.79 | ¢ | 27.9 | ||||||||||||||||||||
| Airline operating CASM, excluding fuel | 8.90 | ¢ | 13.37 | ¢ | 9.60 | ¢ | 7.93 | ¢ | 12.2 | ||||||||||||||||||||
| Cargo expenses | — | ¢ | 2.40 | ¢ | 0.38 | ¢ | — | ¢ | NM | ||||||||||||||||||||
| Airline operating CASM, excluding fuel, special charges, and cargo | 8.17 | ¢ | 8.33 | ¢ | 8.19 | ¢ | 7.68 | ¢ | 6.4 | ||||||||||||||||||||
| Six Months Ended June 30, 2026 | Six Months Ended June 30, 2025 | Percent Change | |||||||||||||||||||||||||||||||||||||||
| Operating Revenues (in thousands) | Allegiant Air | Sun Country* | Consolidated | Allegiant Air | Sunseeker | Consolidated | YoY | ||||||||||||||||||||||||||||||||||
| Passenger | $ | 1,388,815 | $ | 105,475 | $ | 1,494,290 | $ | 1,234,658 | $ | — | $ | 1,234,658 | 21.0 | % | |||||||||||||||||||||||||||
| Third party products | 86,818 | 1,275 | 88,093 | 68,852 | — | 68,852 | 27.9 | % | |||||||||||||||||||||||||||||||||
| Fixed fee contracts | 32,646 | 31,200 | 63,846 | 33,271 | — | 33,271 | 91.9 | % | |||||||||||||||||||||||||||||||||
| Cargo | — | 27,586 | 27,586 | — | — | — | NM | ||||||||||||||||||||||||||||||||||
| Resort and other | 359 | 1,747 | 2,106 | 355 | 51,322 | 51,677 | (95.9) | % | |||||||||||||||||||||||||||||||||
| Total operating revenues | $ | 1,508,638 | $ | 167,283 | $ | 1,675,921 | $ | 1,337,136 | $ | 51,322 | $ | 1,388,458 | 20.7 | % | |||||||||||||||||||||||||||
| Six Months Ended June 30, 2026 | Six Months Ended June 30, 2025 | Percent Change | |||||||||||||||||||||||||||
| Airline Unitized costs (in cents) | Allegiant Air | Sun Country | Consolidated | Allegiant Air | Allegiant Air | ||||||||||||||||||||||||
| Aircraft fuel | 4.23 | ¢ | 4.26 | ¢ | 4.23 | ¢ | 2.95 | ¢ | 43.4 | % | |||||||||||||||||||
| Salaries and benefits | 3.98 | 4.90 | 4.06 | 3.77 | ¢ | 5.6 | |||||||||||||||||||||||
| Station operations | 1.45 | 1.94 | 1.49 | 1.32 | 9.8 | ||||||||||||||||||||||||
| Depreciation and amortization | 1.11 | 1.22 | 1.11 | 1.11 | — | ||||||||||||||||||||||||
| Maintenance and repairs | 0.71 | 0.99 | 0.73 | 0.63 | 12.7 | ||||||||||||||||||||||||
| Sales and marketing | 0.55 | 0.53 | 0.55 | 0.43 | 27.9 | ||||||||||||||||||||||||
| Aircraft rent | 0.14 | — | 0.13 | 0.15 | (6.7) | ||||||||||||||||||||||||
| Other | 0.46 | 1.15 | 0.54 | 0.46 | — | ||||||||||||||||||||||||
| Special charges | 0.63 | 2.64 | 0.81 | 0.14 | NM | ||||||||||||||||||||||||
| Airline operating CASM | 13.26 | ¢ | 17.63 | ¢ | 13.65 | ¢ | 10.96 | ¢ | 21.0 | ||||||||||||||||||||
| Airline operating CASM, excluding fuel | 9.03 | ¢ | 13.37 | ¢ | 9.42 | ¢ | 8.01 | ¢ | 12.7 | ||||||||||||||||||||
| Cargo expenses | — | ¢ | 2.40 | ¢ | 0.21 | ¢ | — | ¢ | NM | ||||||||||||||||||||
| Airline operating CASM, excluding fuel, special charges, and cargo | 8.40 | ¢ | 8.33 | ¢ | 8.40 | ¢ | 7.87 | ¢ | 6.7 | ||||||||||||||||||||
| Three Months Ended June 30, | Percent Change (1) | ||||||||||||||||
| 2026 | 2025 | YoY | |||||||||||||||
| Airline operating statistics (unaudited): | |||||||||||||||||
| Total system statistics: | |||||||||||||||||
| Passengers | 5,753,539 | 5,127,025 | 12.2 | % | |||||||||||||
| Available seat miles (ASMs) (thousands) | 6,406,325 | 5,799,409 | 10.5 | ||||||||||||||
Airline operating expense per ASM (CASM) (cents) | 13.89 | ¢ | 10.79 | ¢ | 28.7 | ||||||||||||
Airline operating CASM, excluding fuel, special charges and cargo expenses (cents) | 8.19 | ¢ | 7.68 | ¢ | 6.6 | ||||||||||||
| Departures | 42,833 | 37,314 | 14.8 | ||||||||||||||
| Block hours | 104,652 | 88,749 | 17.9 | ||||||||||||||
| Average stage length (miles) | 905 | 886 | 2.1 | ||||||||||||||
| Average block hours per aircraft per day | 7.2 | 7.7 | (6.5) | ||||||||||||||
| Full-time equivalent employees at end of period | 8,484 | 5,980 | 41.9 | ||||||||||||||
| Fuel gallons consumed (thousands) | 74,292 | 68,452 | 8.5 | ||||||||||||||
| ASMs per gallon of fuel | 86.2 | 84.7 | 1.8 | ||||||||||||||
| Average fuel cost per gallon | $ | 4.14 | $ | 2.42 | 71.1 | ||||||||||||
| Scheduled service statistics: | |||||||||||||||||
| Passengers | 5,616,207 | 5,077,788 | 10.6 | ||||||||||||||
| Revenue passenger miles (RPMs) (thousands) | 5,226,070 | 4,610,321 | 13.4 | ||||||||||||||
| Available seat miles (ASMs) (thousands) | 6,097,107 | 5,629,040 | 8.3 | ||||||||||||||
| Load factor | 85.7 | % | 81.9 | % | 3.8 | ||||||||||||
| Departures | 37,502 | 36,056 | 4.0 | ||||||||||||||
| Block hours | 92,259 | 85,980 | 7.3 | ||||||||||||||
| Average seats per departure | 177.0 | 175.1 | 1.1 | ||||||||||||||
Yield (cents) (2) | 8.26 | ¢ | 5.75 | ¢ | 43.7 | ||||||||||||
Total passenger revenue per ASM (TRASM) (cents)(3) | 14.24 | ¢ | 11.57 | ¢ | 23.1 | ||||||||||||
Average fare - scheduled service(4) | $ | 76.90 | $ | 52.20 | 47.3 | ||||||||||||
Average fare - air-related charges(4) | $ | 69.55 | $ | 69.49 | 0.1 | ||||||||||||
| Average fare - third party products | $ | 8.15 | $ | 6.63 | 22.9 | ||||||||||||
| Average fare - total | $ | 154.60 | $ | 128.32 | 20.5 | ||||||||||||
| Average stage length (miles) | 914 | 891 | 2.6 | ||||||||||||||
| Fuel gallons consumed (thousands) | 70,655 | 66,419 | 6.4 | ||||||||||||||
| Average fuel cost per gallon | $ | 4.15 | $ | 2.43 | 70.8 | ||||||||||||
| Three Months Ended June 30, 2026 | |||||||||||
| Allegiant Air | Sun Country | ||||||||||
| AIRLINE OPERATING STATISTICS (BY SEGMENT) | |||||||||||
| Total system statistics: | |||||||||||
| Passengers | 5,073,414 | 680,125 | |||||||||
| Available seat miles (ASMs) (thousands) | 5,406,461 | 999,864 | |||||||||
| Departures | 34,733 | 8,100 | |||||||||
| Scheduled service statistics: | . | ||||||||||
| Revenue passenger miles (RPMs) (thousands) | 4,538,749 | 687,322 | |||||||||
| Available seat miles (ASMs) (thousands) | 5,281,688 | 815,419 | |||||||||
| Block hours | 80,881 | 11,378 | |||||||||
| Fuel cost per gallon, excluding indirect fuel credits | $4.19 | $3.87 | |||||||||
| Six Months Ended June 30, | Percent Change (1) | ||||||||||||||||
| 2026 | 2025 | YoY | |||||||||||||||
| Airline operating statistics (unaudited): | |||||||||||||||||
| Total system statistics: | |||||||||||||||||
| Passengers | 10,182,002 | 9,578,331 | 6.3 | % | |||||||||||||
| Available seat miles (ASMs) (thousands) | 11,536,867 | 11,250,993 | 2.5 | ||||||||||||||
Airline operating expense per ASM (CASM) (cents) | 13.37 | ¢ | 10.96 | ¢ | 22.0 | ||||||||||||
Airline operating CASM, excluding fuel, special charges and cargo (cents) | 8.40 | ¢ | 7.87 | ¢ | 6.7 | ||||||||||||
| Departures | 74,403 | 70,549 | 5.5 | ||||||||||||||
| Block hours | 183,475 | 172,620 | 6.3 | ||||||||||||||
| Average stage length (miles) | 906 | 909 | (0.3) | ||||||||||||||
| Average block hours per aircraft per day | 7.2 | 7.6 | (5.3) | ||||||||||||||
| Full-time equivalent employees at end of period | 8,484 | 5,980 | 41.9 | ||||||||||||||
| Fuel gallons consumed (thousands) | 133,492 | 132,089 | 1.1 | ||||||||||||||
| ASMs per gallon of fuel | 86.4 | 85.2 | 1.4 | ||||||||||||||
| Average fuel cost per gallon | $ | 3.65 | $ | 2.51 | 45.4 | ||||||||||||
| Scheduled service statistics: | |||||||||||||||||
| Passengers | 10,014,314 | 9,498,599 | 5.4 | ||||||||||||||
| Revenue passenger miles (RPMs) (thousands) | 9,436,965 | 8,881,650 | 6.3 | ||||||||||||||
| Available seat miles (ASMs) (thousands) | 11,088,667 | 10,934,232 | 1.4 | ||||||||||||||
| Load factor | 85.1 | % | 81.2 | % | 3.9 | ||||||||||||
| Departures | 67,974 | 68,189 | (0.3) | ||||||||||||||
| Block hours | 168,756 | 167,394 | 0.8 | ||||||||||||||
| Average seats per departure | 176.6 | 175.0 | 0.9 | ||||||||||||||
Yield (cents) (2) | 8.38 | ¢ | 6.38 | ¢ | 31.3 | ||||||||||||
Total passenger revenue per ASM (TRASM) (cents)(3) | 14.27 | ¢ | 11.92 | ¢ | 19.7 | ||||||||||||
Average fare - scheduled service(4) | $ | 78.99 | $ | 59.64 | 32.4 | ||||||||||||
Average fare - air-related charges(4) | $ | 70.22 | $ | 70.34 | (0.2) | ||||||||||||
| Average fare - third party products | $ | 8.80 | $ | 7.25 | 21.4 | ||||||||||||
| Average fare - total | $ | 158.01 | $ | 137.23 | 15.1 | ||||||||||||
| Average stage length (miles) | 920 | 914 | 0.7 | ||||||||||||||
| Fuel gallons consumed (thousands) | 128,197 | 128,245 | — | ||||||||||||||
| Average fuel cost per gallon | $ | 3.65 | $ | 2.52 | 44.8 | ||||||||||||
| Six Months Ended June 30, 2026 | |||||||||||
| Allegiant Air | Sun Country | ||||||||||
| AIRLINE OPERATING STATISTICS (BY SEGMENT) | |||||||||||
| Total system statistics: | |||||||||||
| Passengers | 9,501,877 | 680,125 | |||||||||
| Available seat miles (ASMs) (thousands) | 10,537,003 | 999,864 | |||||||||
| Departures | 66,303 | 8,100 | |||||||||
| Scheduled service statistics: | . | ||||||||||
| Revenue passenger miles (RPMs) (thousands) | 8,749,644 | 687,322 | |||||||||
| Available seat miles (ASMs) (thousands) | 10,273,248 | 815,419 | |||||||||
| Block hours | 157,378 | 11,378 | |||||||||
| Fuel cost per gallon, excluding indirect fuel credits | $3.63 | $3.87 | |||||||||
| Period | Total Number of Shares Purchased (1) | Average Price Paid per Share | Total Number of Shares Purchased as Part of our Publicly Announced Plan | Approximate Dollar Value of Shares that May yet be Purchased Under the Plans or Programs (in thousands) (2) | ||||||||||||||||||||||
| April | 9,235 | $ | 82.99 | None | ||||||||||||||||||||||
| May | 62,112 | $ | 75.24 | None | ||||||||||||||||||||||
| June | 23 | $ | 117.60 | None | ||||||||||||||||||||||
| Total | 71,370 | $ | 76.25 | — | $ | 64,694 | ||||||||||||||||||||
| Exhibit No. | Exhibit Description | Form | Date of First Filing | Exhibit No. | ||||||||||
| S-1/A | July 6, 2006 | 3.1 | ||||||||||||
| 8-K | May 13, 2026 | 3.1 | ||||||||||||
4.1(1) | S-1 | February 8, 2021 | 4.1 | |||||||||||
4.2(1) | S-1 | February 8, 2021 | 4.2 | |||||||||||
4.3(1) | S-1 | February 8, 2021 | 4.3 | |||||||||||
4.4(1) | S-1 | February 8, 2021 | 4.4 | |||||||||||
4.5(1) | S-1 | February 8, 2021 | 4.5 | |||||||||||
4.6(1) | 8-K | April 5, 2022 | 4.1 | |||||||||||
4.7(1) | 8-K | April 5, 2022 | 4.2 | |||||||||||
4.8(1) | 8-K | April 5, 2022 | 4.3 | |||||||||||
4.9(1) | 8-K | April 5, 2022 | 4.4 | |||||||||||
4.10(1) | 8-K | April 5, 2022 | 4.4 | |||||||||||
4.11(1) | 8-K | April 5, 2022 | 4.4 | |||||||||||
4.12(1) | 8-K | April 5, 2022 | 4.1 | |||||||||||
4.13(1) | 8-K | April 5, 2022 | 4.2 | |||||||||||
4.14(1)(2) | 10-K | February 12, 2025 | 4.15 | |||||||||||
4.15(1)(2) | 10-K | February 12, 2025 | 4.16 | |||||||||||
4.16(1)(2) | 10-K | February 12, 2025 | 4.17 | |||||||||||
| 8-K | June 29, 2026 | 4.1 | ||||||||||||
| 8-K | June 29, 2026 | 4.1 | ||||||||||||
| 8-K | June 29, 2026 | 4.3 | ||||||||||||
10.1(1) | S-1 | February 8, 2021 | 10.9 | |||||||||||
10.2(1) | S-1 | February 8, 2021 | 10.13 | |||||||||||
10.3(1) | S-1 | February 8, 2021 | 10.36 | |||||||||||
10.4(1) | S-1 | February 8, 2021 | 10.40 | |||||||||||
10.5(1) | S-8 | March 17, 2021 | 4.2 | |||||||||||
10.6(1) | S-1 | February 8, 2021 | 10.42 | |||||||||||
10.7(1) | 10-K | February 14, 2024 | 10.43 | |||||||||||
10.8(1) | 10-Q | May 7, 2024 | 10.1 | |||||||||||
10.9(1)(2) | 8-K | June 20, 2024 | 10.1 | |||||||||||
10.10(1) | 8-K | October 1, 2025 | 10.1 | |||||||||||
10.11(1) | 8-K | October 1, 2025 | 10.2 | |||||||||||
| 8-K | May 13, 2026 | 10.1 | ||||||||||||
| S-8 | May 13, 2026 | 4.3 | ||||||||||||
| 8-K | June 29, 2026 | 10.1 | ||||||||||||
31.1(3) | ||||||||||||||
31.2(3) | ||||||||||||||
32(3) | ||||||||||||||
| 101.SCH | XBRL Taxonomy Extension Schema Document | |||||||||||||
| 101.CAL | XBRL Taxonomy Extension Calculation Linkbase Document | |||||||||||||
| 101.DEF | XBRL Taxonomy Extension Definition Linkbase Document | |||||||||||||
| 101.LAB | XBRL Taxonomy Extension Labels Linkbase Document | |||||||||||||
| 101.PRE | XBRL Taxonomy Extension Presentation Linkbase Document | |||||||||||||
| ALLEGIANT TRAVEL COMPANY | |||||||||||
| Date: | August 10, 2026 | By: | /s/ Robert J. Neal | ||||||||
| Robert J. Neal, as duly authorized officer of the Company (President and Chief Financial Officer) and as Principal Financial Officer | |||||||||||
| Date: | August 10, 2026 | /s/ Gregory C. Anderson | ||||||
| Title: Principal Executive Officer | ||||||||
| Date: | August 10, 2026 | /s/ Robert J. Neal | ||||||
| Title: Principal Financial Officer | ||||||||
| /s/ Gregory C. Anderson | /s/ Robert J. Neal | |||||||
| Gregory C. Anderson | Robert J. Neal | |||||||
| Principal Executive Officer | Principal Financial Officer | |||||||
| August 10, 2026 | August 10, 2026 | |||||||