Originally Posted by
pairofkeets
I guess this is the main benefit consumer wise, other than selecting a seat if you were previously unable to do so. Above all else I'm guessing its mostly a money saving thing for the airline, since if you check in online you'll most likely get your boarding pass at the same time and they don't have to print it for you.
I check in as early as I can because people change flights, seats, etc. and that way I can pick a better seat if one is available. I also like to print my boarding pass when I get to the airport. I always like having a physical BP. On United I can pick an Economy Plus seat for free at check in so there is that incentive.