Originally Posted by
flightexpert
1. You can "upgrade" to a Space seat at the airport, if there are any available. They should give you credit for any fees you already paid for seat selection.
2. You may be able to get a Space seat cheaper than the online rate if there are several still available when you get to the airport. If there are only 1 or 2 left, expect to pay full price. That being said, it never hurts to ask the agent courteously for a discounted rate.