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: 38,729
You do have the option for an upgrade, but you may not get it straight away. I know I've gotten an upgrade when changing to an earlier flight. For a later one, though, they may not have dumped the unsold seats to the R bucket. You may wish to ask an airport agent since you can only make the change at the airport anyway (without a fee).