It is possible to make a connection between the national terminals and also with the main parking lot, through the Pedestrian Tunnel Level. Terminal Transfer Bus (TTB) allows connection between Terminals 1 and 5 and from Terminal 3 and 5 (boarding pass required).
How long does it take to change terminals at Chicago airport?
Domestic Terminals 1, 2, and 3 are connected to each other and you can easily walk between them or take moving sidewalks and escalators. The walk from Terminal 1 to Terminal 2 takes about 10 minutes, and from Terminal 1 to Terminal 3 can take up to 20 minutes if you're walking from farthest gate to farthest gate.
Is it easy to change terminals in Chicago?
How do I change terminals in Chicago?
Airport Transit SystemIf connecting between domestic Terminals 1, 2 & 3, you DON'T have to leave the secured side and take the ATS, you can simply follow the overhead signage to guide you between all domestic terminals. To get between Terminal 5 and Terminals 1, 2 & 3, take the Airport Transit System (ATS).
Can you walk from terminal 1 to Terminal 5 at O Hare?
The terminals take between 10-20 minutes to walk between depending on your gate. If you're connecting internationally, you can take the shuttle to Terminal 5, which takes 10 minutes between the two farthest points.