I know, I know, Frontier credits from Economy class cxl'd flights aren't technically called TTF. That's a SWA term, but anyway...

I'm going to cancel two flights shortly due to a change in family travel plans. One flight is mind. Other is my brother's.

I know a $50 change fee applies to flights rebooked with the cancellation credit, and you can only apply credit from one ticket to a new ticket. However what I'm wondering is whether I can use the funds originally slated for his flight for a flight under my name at a later date, since he isn't likely to need to fly on Frontier any time soon.