Would like to catch a concert in a connecting hub city on a Friday night and just depart Sat AM. Multi city ticket with stopover is $700. RT is only $300. Flt gets in 6:20 PM, and the connection departs 7:50 PM. If I miss the flt, I should be able to get the first AM out the next day.

I don't want to hold up the flight, so I thought I would let the GA know I am leaving the airport and may be late getting back. Anyone had an experience with this?