Originally Posted by
fumje
Do other airlines build deadheads on UA for their flight attendants? Maybe the FA was commuting (NRSA or personal) rather than deadheading?
It's possible, but only when there are no other choices. If you see a crewmember from another passenger airline they are almost certainly commuting.
You will see fractional crews and some charter crews, including Atlas and ATI. They are on paid tickets just like every other passengers.