Originally Posted by SamuelS

If you check-in for an 8am flight, and decide to SDC to a 4pm flight - obviously there is a risk that if at 1pm there are no seats on 4pm you get stuck. But on the basis that you are willing to take that risk, do you need to tell DL you are not planning to take the 8am flight? Do you just no-show?

Also, if checked in already, should you "uncheck-in" yourself somehow?

Always done SDC onto an EARLIER flight in the past, but looking to do a LATER flight out of LAS next week and never done a later flight before (thereby missing the earlier flight).

Cheers.