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Thread: Is it worth it to upgrade, and what's the best way to do it?
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Old May 23, 2014, 7:11 am
  #4  
rsteinmetz70112
 
Join Date: Jul 2013
Posts: 5,813
Then you should be able to use the 4 credit, day before upgrade, assuming seats are available. I have observed that these international flights often sell out business class.
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