AirBerlin, Virgin Australia, and Soutwest have been flyers' most reliable resources for the past three years and they score high marks again.
Ready to redeem your frequent-flier miles and reward points for a plane ticket? Youll probably get a seat on Southwest, but good luck with Delta, at least at the basic redemption level. Southwest Airlines has the best availability of award seats among U.S. airlines on travel dates this year between April and October, according to an annual survey by IdeaWorks Co.,
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