FlyerTalk Forums - View Single Post - The "How to upgrade on *A carriers" thread
Old Oct 23, 2010 | 8:07 pm
  #151  
mahasamatman
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Originally Posted by iwillflytheworld
A SWU printed for LH use can be used to ugprade Y->C on a standby basis (one SWU per leg).
And the OP could do that on his M fare if he could get a SWU.
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