Join Date: Sep 2002
Location: Between AUS, EWR, and YTO In a little twisty maze of airline seats, all alike.. but I wanna go home with the armadillo
Programs: CO, NW, & UA forum moderator emeritus. Eurobonus Millionaire
Posts: 38,726
Yes. They can un-check you in. They don't like to do it, but if you've not flown you can change the flight(s) and there is no extra penalty or fee for having checked in.