Originally Posted by
SJOGuy
I realize no one here is going to know "XQP."
I'd have used "Quepos" too. In my list of airports flown, it's my only code that starts with an X.
The only other one I know about (and have been to) is XPG for Gare du Nord, Paris. Technically not an airport, but for Eurostar, which works just like an airline when booking in a gds.