Just a comment on swag's WN:
Best: None
Worst: Expiration of credits without an opportunity to extend beyond the 12 month period. I would fly WN on occasion if I could build the credits and keep them (i.e. if I could automatically extend with at least one flight in a certain period liek all the other programs)however I don't fly them at all b/c I can't.
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by swag:
AA:
Best - Upgrade an paid fare; award availability.
Worst - The expedite fees for award tix inside 3 weeks.
WN:
Best - Award flight after 4.
Worst - 12 month credit expiration.</font>