O'Hare International Airport Terminal 1

Airlines using this terminal

Transfers from this terminal

• T1T2To Terminal 2
  by walking· 7 minStays inside security

  Connected airside by underground walkways.

  Transfer T1 → T2
• T1T3To Terminal 3
  by walking· 15 minStays inside security

  One secure-side pedestrian route links Terminals 1, 2 and 3 — follow the overhead signage, no need to leave security or ride the ATS.

  Transfer T1 → T3
• T1T5To Terminal 5
  by train· 40 minRe-clear security

  Outside the Terminal Transfer Bus hours (21:30–11:30) you must exit security, ride the Airport Transit System (ATS) and be re-screened at Terminal 5 — allow for the checkpoint, not just the train.

  Transfer T1 → T5
• T1T5To Terminal 5
  by shuttle bus· 20 minStays inside security

  Secure airside Terminal Transfer Bus between Terminal 1 (Gate C18B) and Terminal 5 (Gate M13), every 15 minutes from 11:30 to 21:30 — connecting passengers with a same-day boarding pass only, and no re-screening.

  Transfer T1 → T5

Frequently asked questions

Which airlines use Terminal 1 at O'Hare International Airport?

Terminal 1 at O'Hare International Airport is used by All Nippon Airways, Lufthansa, and United Airlines.

How do I transfer from Terminal 1 to other terminals?

From Terminal 1 you can transfer to: Terminal 2 by walking (7 min, no re-screening), Terminal 3 by walking (15 min, no re-screening), Terminal 5 by train (40 min, re-clear security), and Terminal 5 by shuttle bus (20 min, no re-screening).

Do I need to clear security again when transferring from Terminal 1?

It depends on the route — some transfers from Terminal 1 stay inside security while others require re-clearing it. Check each route above.

Where is Terminal 1?

Terminal 1 is part of O'Hare International Airport (ORD), the airport serving Chicago, United States.