FlyerTalk Forums - View Single Post - How can you tell, before booking at ba.com, if a flight can be MFU'd post booking?
Old Jul 20, 2010 | 2:10 pm
  #4  
clubman
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It's not just the sale fares.

Only fully flexible WT or ET fares can be upgraded with miles.

Last edited by clubman; Jul 20, 2010 at 2:17 pm
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