FlyerTalk Forums - View Single Post - Is it possible to request seat upgrade during flight?
Old May 18, 2017, 9:33 am
  #8  
kaka
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Join Date: May 2006
Location: HKG
Programs: A3, TK *G; JL JGC; SPG,Hilton Gold
Posts: 9,952
you may pay the difference in full fare and pay by credit card(only). This is widely documented outside of cx.com by press, fa and here.

however, it might not have been an operable cabin for your specific flight.

you dont get the upgraded miles either.
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