What is the quickest way to transfer between terminals at IAH for United flights?

United Airlines operates across several terminals at IAH, with most flights departing from Terminals B, C, and E. The quickest way to transfer between these terminals is by using the Skyway, an elevated train system that connects all five terminals. The Skyway operates within the secure area, meaning you won’t have to go through security again when transferring between terminals. Trains run every few minutes and typically take less than five minutes to travel between terminals. If you are outside the secure area, the Subway train system is another option. This underground train runs outside of the secure zone and connects United Airlines Terminal IAH. Both systems are complimentary for passengers and operate 24/7. It’s recommended to follow signs within the terminal for easy navigation. Leave extra time for your transfer if you have a tight connection.