Originally Posted by
flymexico2010
Hello experts,
I had to cancel a ticket and got a FFC. Now I rebooked it yesterday but had to pay a difference for the new ticket. Unfortunately, due to medical reasons need to cancel it again... AS it is in the 24 hours window still can I cancel it and have the difference in fare returned to my credit card and original value of FFC? Do not know how it works. Many many thanks for your advice!
If you rebooked it by starting from the original credit, then probably not -- that's treated as a flight change, which does not have a 24-hour grace period.
If you rebooked it by starting from the search results and then applying FFC at the last step, then probably yes, but I don't know whether or not United would handle that situation properly (that path is new functionality, recently introduced).