A success DP:

Had an FFC set to expire 2/13/25 for $210.

On 2/10 booked a refundable flight scheduled for 2/12. Flight cost was $216 paid w/ FFC + credit card.

After 24 hours, on 2/11, I cancelled the flight. Upon cancelation online, a banner on the cancelation page said this would be manually refunded.

On 2/14, FFC appeared in my united wallet for $210 expiring 2/10/2026. The additional $6 was refunded back to my CC.