FlyerTalk Forums - View Single Post - upgrading J to F?
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Old Jul 26, 2017, 12:13 pm
  #8  
darnold
 
Join Date: Jul 2015
Posts: 88
This will work, I've done it multiple times. Caveats:

-- You must be booked on a native code (not codeshare) to upgrade as a Staralliance award.

-- United will refuse to re-code your flight unless you are attempting to use a GPU, and GPU's are not eligible on Z class.

FWIW, I have applied United GPU's to ANA C and D class flights multiple times, availability tracks directly with the Staralliance upgrade tool and Expertflyer. This and Lufthansa F easily best uses of United instruments in the system.
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