I think many an airline will be happy to sell you a seat on an oversold flight. If you're willing to pony up a full Y fare, they're likely more than willing to reciprocate the favour and bump off a lower-yield pax!
FewMiles..
------------------
[
FlyerTalkers' Resources on the Web ]
[
Unofficial Guide to AAdvantage ] [
Unofficial oneworld Info Desk ]