Originally Posted by
GrayAnderson
I checked, they don't. You get a fee of about HKD2100 HKG-NYC, which feels like roughly the NYC-LON fees added to the nominal HKG-LON fee.
Actually, HKD2100 equals about GBP185. So that looks like roughly the nominal HKG-LON fee plus UK APD departure tax. (unless of course you checked a HKG-LHR-JFK with no stopover, which would have no APD charged, but in which case I would have thought HKG caps apply...)