Terminals · SFO
American departs from Terminal 1 at San Francisco International Airport (SFO). We verified this against the airport's own sources on June 27, 2026 — airlines do move terminals, so we date every check.

American departs from Terminal 1 at San Francisco International Airport (SFO). Harvey Milk Terminal 1, Boarding Area B. Verified June 27, 2026.
Ticket counter in Harvey Milk Terminal 1, Boarding Area B. Bag drop usually closes 45 minutes before departure, so build that into your morning.
Consolidated into the rebuilt Harvey Milk Terminal 1 (Boarding Area B) as part of the multi-year Terminal 1 relocation project; American is one of the carriers named at the new Harvey Milk Terminal 1. We confirmed American's current Terminal 1 on June 27, 2026.
Not sure which building that is? See all SFO terminals with the airport map and how to get between them. Then let your Leave-By Time count backward from your flight — today's SFO security wait, your drive, and the walk to your gate — so you leave with room to breathe.