FlyerTalk Forums - View Single Post - Using points for upgrade, but flying on different loyalty
Old Jul 5, 2018 | 9:56 am
  #11  
btonkid12345
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Join Date: Feb 2016
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OP - if you are anywhere near as rude to the phone agent as you were to LBJ - who is one of the true experts on fare details etc. - even if Virgin/Delta could upgrade you, they probably won't try very hard if at all.

Having said that - you will have a less than 1% chance trying to accomplish what you described - which as I understand it, is using FlyingBlue miles to upgrade a Virgin flight.
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