A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
What is SDFC? Do you mean SDS or SDC?
If you're doing SDS, you won't be charged until if/when you get onto the new flight, so it should be easy to cancel the request if you haven't cleared yet.
Sometimes flightaware is better than delta.dumb or the app to check flight status.