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: 38,748
If there is availability on your day of flight you can use the eticket machine to check in. When using it, press the "change flight"button. It will list alternate flights and whether there are seats available you'll be able to change for free.