Originally Posted by
sannmann
While it’s possible to check bags across two tickets, it requires a specialized level of skill amongst check-in agents to do so. Most agents don’t know how to do it and May tell you that they cannot check your bags through. Get to the airport really early.
I actually never had an agent not know how to check a bag through on two UA tickets.
The real issue is trying to check a bag through on a UA ticket + a Star Alliance ticket.