Originally Posted by
acousticbiker
For reschedule/cancel credits, does the route need to be the same and/or does the set of passengers on the booking need to be the same? Or is it just a credit that can be used any which way?
"Future flight credit": The passenger must be the same. For a wholly canceled ticket, the route doesn't need to be the same. For a partially-used ticket, the flight has to make an allowable combination with whatever you've already flown; e..g, if you flew CDG-SFO, you can probably use the credit on LAX-CDG or SFO-FRA, but you probably can't use it on SFO-HNL. The traveler must be the same. For most tickets, if the new fare is lower, an Electronic Travel Certificate (ETC) will be issued for the difference. If you have several passengers on a reservation, they each have a credit. If you need to rebook them separately, you can do so (the original reservation will be split and each person's credit will carry to their new reservation).
ETC: Several people have reported the option to turn a future flight credit into an ETC. ETCs are good for travel for any passenger on any route, provided that the flights are operated by United or Untied Express.