Originally Posted by
APUBleed
2. I'm trying to understand what in practice this could look like if you've already paid for the fare - they send you a bill in the mail? I don't understand how they could possibly re-price at the end.
If they wanted to do it, that's probably exactly what it would look like. Followed by closure of your FF account with forfeiture of all balances/coupons etc when you don't pay. I haven't heard of BA doing it, but I have heard of some US airlines being pretty aggressive when such tickets have been abused.
rb211.