Originally Posted by
RetiredATLATC
I'll let her know, thank you.
I was under the assumption that all international flights left from T5, but I've only been through there long haul on QR and CX
All international arrivals use terminal 5 for arrivals, but a lot of airlines, including UA, tow the planes over to their "home" terminals for departures.
Rest of advice above is spot on. Polaris Lounge is very nice and easy access to departure gate.