FlyerTalk Forums - View Single Post - Upgrade advice on AA flights
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Old Aug 12, 2013 | 10:55 am
  #2  
jerry a. laska
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Other than a potential opup which you can't predict, the upgrades you are referring to on AA are called LFBU. Information can be found here:
http://www.flyertalk.com/forum/ameri...highlight=lfbu
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