Summary of Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation JetBlue Airways Corporation ("JetBlue") provides air transportation services across the United States, the Caribbean and Latin America, Canada, and England. Our condensed consolidated financial statements include the accounts of JetBlue and our subsidiaries which are collectively referred to as “we” or the “Company”. All majority-owned subsidiaries are consolidated on a line by line basis, with all intercompany transactions and balances being eliminated. These condensed consolidated financial statements and related notes should be read in conjunction with our 2022 audited financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2022 ("2022 Form 10-K"). These condensed consolidated financial statements are unaudited and have been prepared by us following the rules and regulations of the U.S. Securities and Exchange Commission (the "SEC"). In our opinion they reflect all adjustments, including normal recurring items, that are necessary to present fairly the results for interim periods. Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States ("GAAP"), have been condensed or omitted as permitted by such rules and regulations; however, we believe that the disclosures are adequate to make the information presented not misleading.
Cash Equivalents	Cash equivalents Our cash equivalents include money market securities and time deposits which are readily convertible into cash, have maturities of three months or less when purchased, and are considered to be highly liquid and easily tradable. The money market securities are valued using inputs observable in active markets for identical securities and are therefore classified as Level 1 within our fair value hierarchy. The fair values of remaining instruments are based on observable inputs in non-active markets, which are therefore classified as Level 2 in the hierarchy.
Investment in Debt Securities	Available-for-sale investment securities Our available-for-sale investment securities include investments such as time deposits, commercial paper, and convertible debt securities. The fair values of time deposits and commercial paper are based on observable inputs in non-active markets, which are therefore classified as Level 2 in the hierarchy. The fair values of convertible debt securities are based on unobservable inputs and are classified as Level 3 in the hierarchy. Equity investment securities Our equity investment securities include investments in common stocks of publicly traded companies. The fair values of these instruments are classified as Level 1 in the hierarchy as they are based on unadjusted quoted prices in active markets for identical assets. Other investments Our wholly-owned subsidiary, JetBlue Technology Ventures, LLC ("JBV"), has equity investments in emerging companies that do not have readily determinable fair values. In accordance with Topic 321, Investments - Equity Securities of the FASB Codification, we account for these investments using a measurement alternative which allows entities to measure these investments at cost, less any impairment, adjusted for changes from observable price changes in orderly transactions for identifiable or similar investments of the same issuer. Investment in Debt Securities Investment in debt securities consist of available-for-sale investment securities and held-to-maturity investment securities. When sold, we use a specific identification method to determine the cost of the securities. Available-for-sale investment securities. We did not record any material gains or losses on these securities during the three months ended March 31, 2023 and 2022. Refer to Note 7 for an explanation of the fair value hierarchy structure. Held-to-maturity investment securities. We did not record any material gains or losses on held-to-maturity investment securities during the three months ended March 31, 2023 and 2022.
Equity Method Investments	Equity Method InvestmentsInvestments in which we can exercise significant influence are accounted for using the equity method in accordance with Topic 323, Investments - Equity Method and Joint Ventures of the FASB Codification.
Other Investments	Other Investments Our equity investment securities include investments in common stocks of publicly traded companies which are stated at fair value. The carrying amount of our equity investment securities, which are recorded within investment securities in the current asset section of our consolidated balance sheet, was $11 million and $8 million as of March 31, 2023 and December 31, 2022, respectively. We recognized a net unrealized gain of $3 million on these securities in other income on our consolidated statement of operations during the three months ended March 31, 2023 and an unrealized loss of $2 million in other income on our consolidated statement of operations during the three months ended March 31, 2022. JBV has equity investments in emerging companies which do not have readily determinable fair values. In accordance with Topic 321, Investments - Equity Securities of the FASB Codification, we account for these investments using a measurement alternative that allows entities to measure these investments at cost, less any impairment, adjusted for changes from observable price changes in orderly transactions for identifiable or similar investments of the same issuer. The carrying amount of these investments, which is included within other assets on our consolidated balance sheet,

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2023

JetBlue Airways Corporation ("JetBlue") provides air transportation services across the United States, the Caribbean and Latin America, Canada, and England. Our condensed consolidated financial statements include the accounts of JetBlue and our subsidiaries which are collectively referred to as “we” or the “Company”. All majority-owned subsidiaries are consolidated on a line by line basis, with all intercompany transactions and balances being eliminated. These condensed consolidated financial statements and related notes should be read in conjunction with our 2022 audited financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2022 ("2022 Form 10-K").

These condensed consolidated financial statements are unaudited and have been prepared by us following the rules and regulations of the U.S. Securities and Exchange Commission (the "SEC"). In our opinion they reflect all adjustments, including normal recurring items, that are necessary to present fairly the results for interim periods. Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States ("GAAP"), have been condensed or omitted as permitted by such rules and regulations; however, we believe that the disclosures are adequate to make the information presented not misleading.

Cash Equivalents

Cash equivalents Our cash equivalents include money market securities and time deposits which are readily convertible into cash, have maturities of three months or less when purchased, and are considered to be highly liquid and easily tradable. The money market securities are valued using inputs observable in active markets for identical securities and are therefore classified as Level 1 within our fair value hierarchy. The fair values of remaining instruments are based on observable inputs in non-active markets, which are therefore classified as Level 2 in the hierarchy.

Investment in Debt Securities

Available-for-sale investment securities

Our available-for-sale investment securities include investments such as time deposits, commercial paper, and convertible debt securities. The fair values of time deposits and commercial paper are based on observable inputs in non-active markets,

which are therefore classified as Level 2 in the hierarchy. The fair values of convertible debt securities are based on unobservable inputs and are classified as Level 3 in the hierarchy.

Equity investment securities

Our equity investment securities include investments in common stocks of publicly traded companies. The fair values of these instruments are classified as Level 1 in the hierarchy as they are based on unadjusted quoted prices in active markets for identical assets.

Other investments

Our wholly-owned subsidiary, JetBlue Technology Ventures, LLC ("JBV"), has equity investments in emerging companies that do not have readily determinable fair values. In accordance with Topic 321, Investments - Equity Securities of the FASB Codification, we account for these investments using a measurement alternative which allows entities to measure these investments at cost, less any impairment, adjusted for changes from observable price changes in orderly transactions for identifiable or similar investments of the same issuer.

Investment in Debt Securities

Investment in debt securities consist of available-for-sale investment securities and held-to-maturity investment securities. When sold, we use a specific identification method to determine the cost of the securities.

Available-for-sale investment securities. We did not record any material gains or losses on these securities during the three months ended March 31, 2023 and 2022. Refer to Note 7 for an explanation of the fair value hierarchy structure.

Held-to-maturity investment securities. We did not record any material gains or losses on held-to-maturity investment securities during the three months ended March 31, 2023 and 2022.

Equity Method Investments

Equity Method InvestmentsInvestments in which we can exercise significant influence are accounted for using the equity method in accordance with Topic 323, Investments - Equity Method and Joint Ventures of the FASB Codification.

Other Investments

Our equity investment securities include investments in common stocks of publicly traded companies which are stated at fair value. The carrying amount of our equity investment securities, which are recorded within investment securities in the current asset section of our consolidated balance sheet, was $11 million and $8 million as of March 31, 2023 and December 31, 2022, respectively. We recognized a net unrealized gain of $3 million on these securities in other income on our consolidated statement of operations during the three months ended March 31, 2023 and an unrealized loss of $2 million in other income on our consolidated statement of operations during the three months ended March 31, 2022.

JBV has equity investments in emerging companies which do not have readily determinable fair values. In accordance with Topic 321, Investments - Equity Securities of the FASB Codification, we account for these investments using a measurement alternative that allows entities to measure these investments at cost, less any impairment, adjusted for changes from observable price changes in orderly transactions for identifiable or similar investments of the same issuer. The carrying amount of these investments, which is included within other assets on our consolidated balance sheet,