All Nippon Airways (ANA) and Continental Airlines will begin codesharing on services between Japan and the USA from 28 March.
Continental will place its code on six international services operated by ANA between Tokyo Narita and Washington DC, Los Angeles, San Francisco, New York, Chicago and Honolulu.
The two airlines will also codeshare on four ANA domestic services between Tokyo Narita and Fukuoka, Osaka Itami, Nagoya and Okinawa, say the Star Alliance carriers.
In return, ANA will place its code on three Continental domestic services between Houston and Los Angeles, San Francisco and Chicago.
The carriers say this is the first phase of their codesharing cooperation, and plan to expand the agreement in the future.
"Codesharing between Continental and ANA improves on the linkages we established between the two airlines when we first joined Star Alliance," says Continental's chairman, president and CEO Jeff Smisek. "We look forward to further solidifying our relationship with ANA under our planned Pacific joint venture."
The airlines applied to codeshare on each other's flights after Japan and the USA concluded an open skies agreement in December 2009, liberalising air services between the two countries and allowing their airlines to apply for anti-trust immunity together.