Originally Posted by
IADFlyer123
Can I up fare from a W fare or a V fare to a different flight where R space is open. The reason I am asking is because my return upgraded flight gets me into IAD at 9pm, but now space has opened into an earlier flight from FRA & MUC where Q is available at only $30 more. Is this possible, without the $250 change fee?
No, changing a flight, routing or date would trigger the change fee and fare difference - the buyup is only for moving from coach to first on the exact flights you're currently booked on.