Thanks. Very direct and very simple. I like it.
Is there AA (or agent for AA) ticketing desk at ICN? There are some crazy re-route (e.g. 1 segment of LHR-SIN now become 3 segments: LHR-HKG-NRT-SIN)... The telephone agent said there is no surcharge due to invol but I am worry the ticketing person may have a different view.

How can I make sure I don't have to pay extra?