FlyerTalk Forums - View Single Post - Specific GPU and RPU usage questions thread
Old Mar 24, 2015 | 9:31 pm
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Originally Posted by hans
I should know this but if seats show in R (R>0), can you use a GPU to upgrade even if you're not buying a seat in a "W" and above fare class?
No, if your ticket class is below W, the GPU button will be greyed out on the reservations upgrade page. GPU are fare restricted to W and above. You can upgrade a ticket below W with miles and copay $$.

GPU are not fare restricted if the PNR is fully domestic/RPU eligible.
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