For the average traveler without elite airline flyer status, here's another reason to prefer Southwest: to change an economy (nonrefundable) ticket on AA will cost you $200, (plus the difference in ticket cost--which is OK). Plus if you purchased seat upgrades for more leg room, you will lose those...they aren't refundable nor transferable to the new flight. This year AA also tacked on $25 checked baggage fees for flights to SXM.

Hurry up Southwest to SXM, please!