Join Date: Jun 2007
Location: FL, but soon no fixed address
Programs: WN,DL,AA,UA,B6,more!
Posts: 826
You will have to cancel/rebook into F. This will be $150 fee unless you are Plat/Diamond.
...and you can't make any change is less than 72 hours from departure.
If you really want F look for award space now.
Foo