Originally Posted by
coolcoil
Sorry - I don't have any experience with COPA SDC or standby. However, if you are willing to spend the money, COPA's change fees aren't bad. If you have a COPA ticket (as opposed to UA), the change fees are often $100 to $115. It's more money, but you can confirm now.
And they've never actually collected it from me. If they ask "would you like to pay the change fee now or pay at the airport," the correct answer is "airport."