SW has captured most of our business lately
For several years I had used AirTran & their CC for rewards and was able to earn flights easily; although redeeming said credits were a challenge lol
Another way we managed to earn flight vouchers was accomplished by both their losing our luggage
and nasty habit of cancelling flights whilst we sat @ MCO
for hours before they plopped us down on a later flight(s)...not sure if it's a good thing or a bad one.
They also tended to change flight times, especially NSs, (sometimes cancelling completely; once moving up 8 hours)
without any notice
Apparently, they have changed that practice...last Dec. when they changed our flight time we did receive an email change notice wherein we had to "click" on it to acknowledge the change
i'm using our last AT credit this summer & plan on solely utilizing SW.
IMO, you cannot beat the ability to book, get a ding/sale price, or even sell unused ressie funds on ebay (i recently received nearly 90% of funds i was unable to use).