Houston Airport Terminals: A Complete Guide To IAH Terminals

Last Updated on Oct 12th, 2026 by Neha Sharma, Leave a Comment

George Bush Intercontinental Airport (IAH) is the primary airport for Houston and one of the largest airports in Texas for both domestic and international flights. It is approximately 23 miles away from the city center. IAH is a United Airlines hub and features five passenger terminals, numbered a through E.

Since the various terminals are used by different airlines and types of flights, knowing where to go can speed up check-in, security, connections, and boarding.

Houston Airport Terminals at a Glance

Airline and gate assignments can change, so passengers should check their flight information before arriving at IAH.

Terminal A At Houston Airport

Which airlines use Terminal A? Many non-United domestic carriers fly out of A, as well as Canada flights. Airlines that typically fly out of an include Alaska Airlines, American Airlines, Delta Air Lines Frontier JetBlue, Spirit, and WestJet.

Throughout a terminal, travelers will find the regular necessities of an airport, including restaurants, coffee shops, retail stores and charging stations. The terminal has been a part of a larger re-carpeting and wayfinding renovation at the airport.

Terminal B At Houston Airport

Terminal B primarily serves United Express regional flights. It has been undergoing a major transformation project, with improvements designed to modernize the passenger experience and expand terminal facilities.

During construction and ongoing improvements, travelers should expect some temporary layout changes and follow airport signage for gate assignments. United Express flights continue to operate from this terminal.

Passengers connecting through Terminal B should allow additional time to reach their gate, particularly while construction and terminal improvements are underway.

Terminal C At Houston Airport

United Airlines Terminal C is the primary United Airlines domestic hub at IAH. United operates numerous domestic flights from this terminal to cities across the United States.

Passenger services, restaurants, and shops, check-in counters and several boarding gates are in the terminal.

If you are traveling from Terminal C to the other terminals there is easy access via the Skyway or the Subway train system.

Terminal D At Houston Airport

Which airlines are in Terminal D? What Airlines are at Terminal D? Aeromexico, Air France, British Airways Emirates EVA Air KLM Lufthansa, Qatar Airways, Singapore Airlines, Turkish Airlines and Volaris are among the international airlines served by Terminal D not operated by United.

International arrivals and departures are processed through the terminal with customs and immigration services available to eligible arriving international passengers. Infrastructure upgrades at Terminal D Lately have improved passenger amenities.

Terminal E At Houston Airport

Terminal E accounts for many United Airlines international flights at IAH. United operates what comes next international flights from this terminal to Europe Asia Latin America and other international locations.

The terminal offers passenger services, dining, retail, lounges, and facilities for international travelers, including a modernized Terminal E Ticketing Lobby as part of the airport’s International Central Processor project.

Houston Airport Terminal Map

IAH offers you two separate train options for hopping between its five terminals.

The Skyway runs above ground and is fully automated, so it only serves travelers who have already cleared security and need to move around inside the secure area.

Down below, the Subway links all five terminals and also stops at the Houston Airport Marriott, and this one’s accessible before you go through security.

There are walkways linking some terminals too, mostly connecting Terminals C, D, and E.

Houston Airport Airlines By Terminal

Airline terminal assignments may change, so passengers should confirm the current terminal and gate for their individual flight.

Transportation Between Houston Airport Terminals

The Skyway is a corridor that runs above the terminals past the security checkpoint. It offers regular service and is convenient for transferring passengers within the secured area.

The Subway connects the terminals before security and also allows access to the Houston Airport Marriott. Those passengers who find themselves moving between the terminals before check in or clearing security might find this service helpful.

Pedestrian walkways connect some of the terminals, Terminal C, D, and E in particular.

Houston Airport Parking Options

IAH provides several parking options for passengers:

• Terminal Parking: Located near the passenger terminals.
• Economy Parking: Lower-cost parking with shuttle transportation to the terminals.
• Valet Parking: Available at selected terminal locations.

Changes in parking availability, pricing, or reservation capabilities are possible. Passengers can check the most recent updates on parking through Houston Airports’ website or the airport app.

See our Houston Airport Parking guide for complete information on parking locations, rates, and parking instructions.

Facilities Available At Houston Airport Terminals

Passenger services at IAH include:

• Wi-Fi availability across the terminals
• Charging points for passenger devices
• Restaurants, cafés, and other dining options
• Airline lounges, including United Clubs and international airline lounges
• Family restrooms and nursery facilities
• Wheelchair assistance and accessibility services
• Currency exchange services in relevant international areas
• ATMs across the airport

Passengers can also use Houston Airports’ digital resources for flight status, terminal information, maps, and parking details.

Houston Airport Food and Restaurants

There are several restaurants, cafs and other eateries throughout the airport. Some of these depend on terminal and gate area.

For more restaurant information, see our Houston Airport Food & Restaurants guide.

Houston Airport Lounges

IAH has many airline and independent lounges available. Eligibility can be based on the airline, class of service, membership, or other criteria.

For lounges locations and access, see our Houston Airport Lounges guide.

Houston Airport Terminal Map

An IAH terminal map with more detail will show where Terminals A B C, D and E, train stations, parking options, and amenities for the visitors are located.

Check out our Houston Airport Map terminal by terminal for help navigating the different terminals.

Tips For Navigating Houston Airport Terminals

• Know your terminal before heading to the airport the terminal assignment can change for your flight, so double check the airline information before heading to IAH.
• If you are travelling to an international flight, factor in the time needed to transfer between Terminals and go through any security or check-in formalities. For international flights, Terminals D and E provide services.
• View up-to-date flight status, terminal information, maps, and parking and transportation information using the Houston Airports app, or on the airport information screens.
• If your connection is at Terminal B, please allow extra time during construction at this terminal.
• Connections after security may also make use of the Skyway for transferring between terminals.

Direct and Connecting Routes from Houston to India

Houston is an important US gateway for passengers travelling to India. Depending on the destination and airline, passengers can choose from different nonstop or connecting flight options.

• Houston to India
• Houston to Ahmedabad
• Houston to Bangalore
• Houston to Chennai
• Houston to Delhi
• Houston to Hyderabad
• Houston to Kolkata
• Houston to Mumbai
• Houston to Pune

Flights from India to Houston

Passengers travelling from India to Houston can choose from flight options based on their departure airport, destination, airline, connection point, and travel dates.

Popular India to Houston Routes

• Chennai to Houston
• Delhi to Houston (HOU)
• Delhi to Houston (IAH)
• Hyderabad to Houston (HOU)
• Hyderabad to Houston (IAH)
• Kolkata to Houston (HOU)
• Kolkata to Houston (IAH)
• Mumbai to Houston (HOU)

Conclusion

The five terminals at George W. Bush Intercontinental Airport are dedicated to specific, at a glance domestic, regional, and international operations. Among them are: A, which serves many non-United domestic airlines; B, which is dominated by United Express regional flights; C, which is dominated by United domestic flights; D, which is dominated by many non-United international airlines; and E, which is dominated by many United international airlines.

The Skyway and Subway will link up the terminals and allow for easier moving around the airport. Checking your terminal before you arrive is a good idea, mainly for international-to-domestic connections.

Frequently Asked Questions

Why Choose MyTicketsToIndia for Flights from Houston to India?

MyTicketsToIndia helps passengers compare flight options from Houston to India, including available nonstop and connecting itineraries to major Indian destinations.

Our travel team can assist with route options, fares, schedules, and travel-related questions.

Search Flights | Call | WhatsApp

*Disclaimer: All brand names and trademarks mentioned are the property of their respective owners and are used for educational purposes only. We do not promote, endorse, or criticise any brands. Their use is solely for reference and informational context.

About Neha | View Posts

Neha Sharma, a passionate travel blogger with more than 2 years and 6 months of experience, captures the beauty of the world through her words. With her adventurous spirit and a keen eye for detail, Neha takes her readers on mesmerizing journeys to exotic destinations. Her vivid descriptions and insightful tips make her the go-to guide for wanderlust seekers. Join Neha as she explores the globe, sharing her love for travel and inspiring others to go on their unforgettable adventures.