DCA-ROCguy From United States of America, joined Apr 2000, 4402 posts, RR: 37 Reply 1, posted (11 years 9 months 1 week 5 days 7 hours ago) and read 493 times:
UA and US's soured relationship pretty well kills chances of United allowing US into Star. The two carriers have an excellent route complementarity. But until one or both carriers loses its current managment, they probably won't join forces. Wolf made Goodwin look like a fool and Goodwin probably knows it.
I'd give oneworld the best shot....US was always more in the oneworld orbit before the UA merger attempt, with the AA FF hookup. As you note it could be easily reinstated. The two carriers would have excellent route complementarity. Also, i'd bet AA is still smarting from the loss of Canadian....they'd be glad to get some more North American strength into oneworld.
Northwest/KLM is the only other possibility IMO. But AA has Don Carty, probably the brightest and most capable Cartel-Six Carriers CEO right now. If he wants US, and signs are that he does, they'll probably join oneworld.