Originally Posted by
benewr
I have a $3300 flight credit to use.
When I try a new booking, the new flight I want is 2450$.
When I try to use the credit, for the exact same flight I am asked a price difference of + 221$ so the new total is 3521$.
How does it make sense ?!
Is this a flight credit from a whole unused ticket?
If yes, then are you using change flight, don't. While it can work, this is a occasional issue it has.
Book the desired new flight and use the flight credit at the payment phase.
If that fails, then call and get an agent to handle it