Note 1 - Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2013
Basis of Presentation and Significant Accounting Policies [Text Block]	Note 1 — Summary of Significant Accounting Policies Basis of Presentation: The accompanying unaudited consolidated financial statements include the accounts of Allegiant Travel Company (the “Company”) and its majority-owned operating subsidiaries. Investments in affiliates in which the Company’s ownership interest ranges from 20 to 50 percent and in which the Company has the ability to exercise significant influence over operating and financial policies are accounted for under the equity method. All intercompany balances and transactions have been eliminated. These unaudited consolidated financial statements reflect all normal recurring adjustments, which management believes are necessary to present fairly the financial position, results of operations, and cash flows of the Company for the respective periods presented. Certain information and footnote disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission for Form 10-Q. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements of the Company and notes thereto included in the annual report of the Company on Form 10-K for the year ended December 31, 2012, filed with the Securities and Exchange Commission. The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. The interim results reflected in the unaudited consolidated financial statements are not necessarily indicative of the results that may be expected for other interim periods or for the full year. Reclassifications: Certain reclassifications have been made to the prior period’s financial statements to conform to 2013 classifications. These reclassifications had no effect on the previously reported net income.

Note 1 - Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2013

Basis of Presentation and Significant Accounting Policies [Text Block]

Note 1 — Summary of Significant Accounting Policies

Basis of Presentation: The accompanying unaudited consolidated financial statements include the accounts of Allegiant Travel Company (the “Company”) and its majority-owned operating subsidiaries. Investments in affiliates in which the Company’s ownership interest ranges from 20 to 50 percent and in which the Company has the ability to exercise significant influence over operating and financial policies are accounted for under the equity method. All intercompany balances and transactions have been eliminated.

These unaudited consolidated financial statements reflect all normal recurring adjustments, which management believes are necessary to present fairly the financial position, results of operations, and cash flows of the Company for the respective periods presented. Certain information and footnote disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission for Form 10-Q. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements of the Company and notes thereto included in the annual report of the Company on Form 10-K for the year ended December 31, 2012, filed with the Securities and Exchange Commission.

The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.

The interim results reflected in the unaudited consolidated financial statements are not necessarily indicative of the results that may be expected for other interim periods or for the full year.

Reclassifications: Certain reclassifications have been made to the prior period’s financial statements to conform to 2013 classifications. These reclassifications had no effect on the previously reported net income.