Originally Posted by
guv1976
Things have changed since the AA/US merger. Now, both AA and US fly nonstops on the SEA-PHX route (along with AS). In fact, AA now has non-stops from PHX to SNA, DTW, and EWR, in addition to non-stops to its hubs at DFW, ORD, and MIA.
I believe you'll find that virtually all are operated by US even though they're sold by AA. And US doesn't have the benefit of MCE seats, though maybe someone used to BA short haul wouldn't notice.