American and Starlux to share flight codes on transpacific and U.S. domestic routes

American Airlines and Taiwan's Starlux will begin codesharing on select flights starting Sept. 30, allowing passengers to book both carriers on a single reservation. Starlux-operated flights between Taipei and four U.S. West Coast airports will carry American flight numbers, while Starlux codes will appear on 26 American domestic routes to Los Angeles and Phoenix. The expanded agreement builds on an existing interline partnership and may pave the way for a deeper alliance.

The codeshare arrangement, effective Sept. 30, places American flight numbers on Starlux services linking Taipei with Los Angeles, San Francisco, Ontario, and Seattle. In return, Starlux codes will appear on 26 American domestic routes feeding into Los Angeles and Phoenix, with room for expansion. This follows an earlier interline pact that already permitted through-checked baggage between the carriers.

Starlux, which launched during the pandemic, operates new Airbus A350 aircraft featuring both business and first-class cabins. The carrier recently forged a similar codeshare with Alaska Airlines, allowing reciprocal loyalty point earning. Industry observers note Starlux has expressed interest in joining the Oneworld alliance, which counts both American and Alaska as members, though no formal application has been confirmed. For now, the American partnership stops short of full integration—no mileage accrual, redemptions, or elite perks are included.