Originally Posted by
zcat18
I wonder if there are US Airways flights that are code shared by both AA/One World and Star Alliance partners in the run-up to the AA integration and full withdrawal from *A, which I believe happens in March.
Such cross-alliance codesharing is not all that uncommon. Lots of bilateral agreements exist outside of the alliances. Copa puts its code on the KLM PTY-AMS flight even though they're in different alliances.