Terminal 3 is in the main airport core. By car it is the third terminal reached from Interstate I-190 after Terminal 1 and Terminal 2. It is a major hub for American Airlines and serves Delta and Alaska Airlines flights.
The terminal is on two levels, the upper level for departures and arrivals, the lower for baggage claim and ground transportation. Beyond the ticketing area the terminal is split into four concourses. From right to left they are: Concourse G, Concourse H, Concourse K and Concourse L.