Originally Posted by
neuro0
Tried at starting airport. Agents can't do it.
Tried at PTY after arriving, CS said I have to pay change fees. Only change to earlier flight is free.
Little trick. First, in the start airport or in telephone customer service, ask about the stopover program, after that, ask of you can get the change for free. Sometimes, it can work. Also, at check in, in the app, in some cases, they show the offer for free change.