Originally Posted by
username
I think the NH flight departs out of Terminal 1 while the UA international arrival is in T5, right?
All international arrivals at ORD are in T5. That said, this is largely irrelevant, as the OP must clear customs and immigration and then reclear security, so the terminal transfer time isn't really a determining factor. Once out of the customs hall, the time to T1 pretty much maxes out at 10 minutes, if you have to wait for a train.