Originally Posted by
malmostoso
If you have no flexibility in choosing your fares or airlines, just stick to the airline that you fly the most. In the US this clearly limits you to UA for *A.
I'm thinking United on Star Alliance based on the airlines, too. Plus Marriott hotels is allied with them and there are plenty of those!
What about American Air on One World? Looking at the flight maps they serve more airports than United, and I can leave out of LGA instead of EWR or JFK.
Thanks!