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Thread: Chances of MMB upgrades
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Old Sep 10, 2011, 3:16 am
  #5  
hifly15
 
Join Date: Feb 2010
Location: na
Posts: 255
Does anyone know when proactive upgrades are avaliable on booking for one-way flights as occasionally from past experience I don't find the cheap upgrade option avaliable till near the time of departure.
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