Houston IAH Terminal

Planning your trip through George Bush Intercontinental Airport (IAH) is easier when you understand the Houston IAH Terminal layout before you arrive. This guide covers all five terminals, the Skyway and Subway connections, airline and lounge information, parking options, TSA security, services, and current construction updates.

IAH’s five terminals branch off from a central airfield loop. They are connected by two separate train systems depending on whether you’re inside or outside the security checkpoint. You can also use our IAH Airport Map to navigate the airport more easily.

Source: iahmaps.fly2houston.com

The Skyway ride from the Terminal A station to the Terminal D/E station takes about 4 minutes and 15 seconds, making cross-terminal connections manageable even on a tighter layover.

Reservations are recommended at all onsite lots. ecopark2 has been reservation-only since June 1, 2026, and the terminal garages accept only pre-booked reservations once they reach 85% capacity. IAH also offers a Parking Plus rewards program, EV charging at terminal garages and both ecopark lots, Veterans Parking, and cashless entry (debit/credit, Apple Pay, and Google Pay accepted).

A cash-to-card machine is available at Level 2 across from the American Airlines check-in counter. You can also choose from several offsite parking options. For cheaper rates, reserve your IAH Parking, with free shuttle service at many lots.

All international arrivals at Houston IAH, including flights landing at Terminal D, are processed through Customs and Immigration in the Terminal E International Arrivals Hall at the airport's Federal Inspection Services (FIS) facility.

Customs Clearance: All arriving international passengers must clear U.S. Customs and Border Protection (CBP), unless they completed U.S. Preclearance at their departure airport.

Expedited Entry Services: Eligible travelers can utilize Global Entry kiosks or the Mobile Passport Control (MPC) app to speed up processing.

Pre-Travel Preparation: Before you fly, verify your visa requirements, immigration entry steps, and Trusted Traveler enrollment. Qualifying departing international passengers can also explore Texas tax refund options for eligible retail purchases.

IAH is a major United Airlines hub, and the airport also hosts a wide mix of domestic and international carriers, including American, Delta, Alaska Airlines, JetBlue, and Frontier on the domestic side. International service includes carriers such as Aeromexico, Air Canada, Air France, ANA, Avianca, British Airways, Emirates, EVA Air, KLM, Lufthansa, Qatar Airways, Turkish Airlines, VivaAerobus, Volaris, and WestJet.

Gate assignments are subject to change, so check your airline's app or website for your terminal before you leave. Make sure to check your IAH Flight Status before heading to the airport.

IAH offers a wide range of passenger services across its five terminals.

• Restaurants
• Shops
• Lounges
• Wi-Fi
• Massaging chairs
• Water bottle filling stations
• ATMs (available in all terminals)
• Currency/Financial services
• Service Animal Relief Areas

The smoking area exists outside every terminal, at least 25 feet from the exit doors.

Lounges at Houston IAH Terminal

Lounge access at IAH varies by airline status, ticket class, membership, or eligible credit card.

Currency/Financial services

Currency exchange services are available at Terminals B, C, D and E. Exchange rates and fees apply.

Service Animal Relief Areas

Service animals are welcome at the airport. Below is a summary of the service animal relief area locations:

IAH has several security checkpoints, and the table below lists each one with its operating hours. Terminal C North also has a Premier screening lane from 4 a.m. to 10 p.m.

Note: Screening times are subject to change.

TSA PreCheck at Houston IAH Terminal

TSA PreCheck provides expedited security screening for eligible travelers, allowing them to move through dedicated screening lanes more quickly. The checkpoint hours and PreCheck hours are subject to change. TSA PreCheck is available at Terminal A North, Terminal C North, Terminal D, and Terminal E.

CLEAR at Houston IAH Terminal

CLEAR offers expedited identity verification, allowing members to bypass the regular ID check before proceeding to TSA screening.

• Terminal A North: Daily 4 a.m. - 6 p.m.
• Terminal C: Sun-Fri: 4 a.m. - 7 p.m., Sat: 4 a.m. - 6 p.m.
• Terminal E: located in front of the United Club and Polaris Lounge, with post-security enrollment open daily from 4 a.m.- 6 p.m.

3-1-1 liquids rule

Under TSA's 3-1-1 rule, each passenger can carry liquids, gels, creams, aerosols, and pastes in containers of 3.4 ounces (100 ml) or less, packed in one quart-sized clear bag.

Depending on where you lost/found an item, you can reach out to the following phone numbers.

Baggage claim is located on the arrivals level of each terminal. Terminal B arrivals are on Level 1, with baggage claim and access to ground transportation and parking. International arrivals, including passport control and customs, are processed through Terminal E.