<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by dlnewbie:
Do USAir and United only allow you to use your elite upgrades on certain fares or can you use them from any fare.
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On USairways, the upgrades are for pretty much any published fare, except that for international travel, you can't upgrade from the lowest fare class ("V" I think). I don't know about United, but with the codeshare pending, I might want to learn soon.