Main terminal, upper level
Departures level with airline check-in counters. The Concourse B entrance is at the west end and the Concourse A entrance is at the east end.
Tucson International Airport (TUS) terminal guide
Tucson, Arizona KTUS #77 US airport by passengers
How TUS is laid out and how to move between buildings.
Terminals at TUS
Main terminal, lower level
Baggage claim, ground transportation and the Sun Tran stop in front of the terminal.
Concourse B (gates B1-B11)
Alaska, American and Delta. The airport lists Delta at B1, B2 and B4, and American at B8 to B11. Gates can change.
Concourse A (gates A1-A9)
Southwest, Sun Country, United and Frontier. The airport lists Sun Country at A2, Southwest at A3, A4 and A6, and United at A5 and A7 to A9. Gates can change.
Concourse C
The C gates have their own checkpoint, which opens only when flights are scheduled from that area. Most travelers do not use it.
Moving between terminals
Concourses A and B are not connected after the security checkpoints. To move between them you would have to leave the secure area and go through the other checkpoint, so check your gate before you join a security line.
Reviewed October 8, 2026. Confirm details on the official airport website. Spotted a change?
Frequently asked questions
Are the concourses at Tucson connected?
No. Concourses A and B are not connected after security, so you would have to leave the secure area and go through the other checkpoint.
Which concourse is my airline in?
Alaska, American and Delta use Concourse B at the west end. Southwest, Sun Country, United and Frontier use Concourse A at the east end. Check your boarding pass because gates can change.