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Old Mar 26, 19, 10:24 pm
  #13  
sscywong
 
Join Date: Feb 2012
Location: HKG
Programs: CX DM, SPG Pt, Le Club Accor GO, Shangri-La GC Jade
Posts: 1,327
Originally Posted by kaka View Post

you pay full fare difference
Actually it's more than full fare difference

e.g. I know how much it takes to upgrade Y fare to J fare before flight (e.g. around HK$3,600 for HKG-PEK), but if you upgrade at airport or even onboard, it'll be north of HK$4000
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