All five terminals at IAH are connected by an above-ground automated people-mover (Skyway) and an underground train (Subway).

Skyway Automated People-Mover

The above-ground Skyway provides transportation between terminals while inside security.

• Departs every two minutes from the Skyway stations in Terminals A, B, C and D/E
• Free, operates every day
• Signs to Skyway stations are marked “Skyway”

The total Skyway travel time from the Terminal A station to the Terminal D/E station is 4 minutes, 15 seconds.

Subway Train

The below-ground Subway train provides transportation between terminals while outside security (pre-security).

• Departs every three minutes from the Subway stations in Terminals A, B, C, D/E, and the Airport Marriott
• Free, operates every day from 3:30 a.m. to 12:30 a.m. Closed between 12:30 a.m. and 3:30 a.m.
• Signs to the Subway stations are marked “Subway”

The trip time between one Subway station and the next is approximately 3 minutes.