JetBlue Airways and American Airlines launched their partnership today, providing interline service initially in 30 markets.
The partnership, originally announced in March, gives access to markets currently unavailable to either airline's passengers flying out of New York JFK and Boston Logan.
The carriers say the interline, including seamless check-in and bag drop services, initially covers 12 of American's international destinations. Interline service to two additional American international destinations - Rio de Janeiro and Tokyo Haneda - will be added in November and January, respectively.
The carriers say the agreement also initially includes 18 of JetBlue's domestic destinations.
American and JetBlue also have revealed that they are working on a frequent flyer partnership that will allow their passengers to earn points on the routes included in the interline.
The airlines say that they will both "see additional customers fed into their networks" and that passengers "will benefit from improve connections". Interline service, however, is only provided in non-overlapping markets, the carriers note.
Both carriers say they are now working to make interline itineraries available on their websites. Currently passengers can only book with American in person or on the phone, or through travel agencies.
JetBlue will continue to also provide international service to its customers through a partnership with Aer Lingus and a codeshare with Lufthansa, an investor in the airline.