Terminals · Chicago O'Hare
ORD Terminal 3
American, Aer Lingus and British Airways and other carriers fly from Terminal 3. Terminal 3 covers Concourses G, H, K, and L (about 80 gates). You clear security right there, so check today's live ORD wait before you leave.
Which airlines use Terminal 3 at ORD?
These airlines fly from Terminal 3 at ORD. Tap one for its gates, check-in hall, and whether it recently moved terminals.
- American at ORDTerminal 3 · recently movedT3
- Aer Lingus at ORDTerminal 3 · recently movedT3
- British Airways at ORDTerminal 3 · recently movedT3
- Iberia at ORDTerminal 3 · recently movedT3
- Japan Airlines at ORDTerminal 3T3
What gates are in Terminal 3, and where do you check in?
Concourses G, H, K, and L (about 80 gates). American is the main carrier; Alaska and several international partners also check in here.
Four concourses: G, H, K, and L.
Where is security in Terminal 3 at ORD?
Terminal 3 checkpoints serve Concourses G, H, K, and L, with TSA PreCheck lanes. Lines still swing by the hour, so check ORD wait times by terminal and head to the fastest open lane. Not sure how long to budget? How long does airport security really take breaks it down by the hour.
How do you get to and from Terminal 3 at ORD?
Airport Transit System (ATS). The ATS train stops here; Terminal 3 is connected airside to Terminals 1 and 2. Stay airside to walk to Terminals 1 and 2. An airside transfer bus also links Terminal 3 with Terminal 5 about every 15 minutes in the afternoon and evening.
Changing terminals on a connection? Check the minimum connection time you need, and see all ORD terminals on the airport map.
Accessibility and getting around Terminal 3
- Accessibility. Step-free access with elevators, ramps, and assistance on request.
- Domestic or international? A renovation program is upgrading Terminal 3 through about 2027; American took over former Spirit gates on Concourse L in early 2025.
- Past security. A wide range of dining and shops near the rotunda and along the four concourses.They're handy once you're through, but they shouldn't change when you leave home.
Terminal 3 layout verified June 27, 2026against the airport's own sources. Terminals do change — we date every update.
Common questions about ORD Terminal 3
Which airlines use Terminal 3 at ORD?
American (Terminal 3), Aer Lingus (Terminal 3), British Airways (Terminal 3), Iberia (Terminal 3), Japan Airlines (Terminal 3) use Terminal 3 at ORD. Tap an airline for its gates, check-in hall, and whether it recently moved.
What gates are in Terminal 3, and where do you check in?
Terminal 3 covers Concourses G, H, K, and L (about 80 gates). American is the main carrier; Alaska and several international partners also check in here.
Where is security in Terminal 3 at ORD?
Terminal 3 checkpoints serve Concourses G, H, K, and L, with TSA PreCheck lanes. Waits swing by the hour, so check ORD wait times by terminal and head to the fastest open lane before you get through security.
How do you get to and from Terminal 3 at ORD?
The ATS train stops here; Terminal 3 is connected airside to Terminals 1 and 2. Stay airside to walk to Terminals 1 and 2. An airside transfer bus also links Terminal 3 with Terminal 5 about every 15 minutes in the afternoon and evening.
You know Terminal 3. Now get the exact minute to walk out your door — built from today's live ORD security wait and your drive.
See your Leave-By Time →