Originally Posted by
UnitedSkies
Check in online. I do it 100% of the time I fly non-rev or revenue, and it's really the best thing since sliced bread (unless you like standing in line, that is!)

Unfortunately, a lot of int'l itineraries (e.g. PEK, PVG, SYD) won't allow OLCI.
You need to check in with UA agents.