IAH Airport Guide: Terminals, Airlines, Skyway, Wi-Fi

George Bush Intercontinental Airport has five terminals, A through E. Here is what Houston Airports publishes:

• Terminal A: American Airlines and Spirit arrivals are met at Door A-115, and JetBlue lists Terminal A on its own IAH page. United passengers arriving here collect bags at Terminal C.
• Terminal B: United's terminal, being rebuilt. Its gates, now numbered B40 to B68 on the official map, stay open, but you check in and clear TSA at Terminal C.
• Terminal C: United check-in and security, plus United baggage claim for domestic arrivals from Terminals A, D and E.
• Terminal D: only two airlines now operate here, and TSA hours are limited. Air France, KLM and Lufthansa moved to Terminal E.
• Terminal E: the expanded international terminal. It is now the check-in point for the international airlines that left Terminal D, has a 17-lane TSA checkpoint with PreCheck and CLEAR+, and holds the international arrivals hall with Customs and Immigration.

Houston Airports moved Air France and KLM to Terminal E on Feb. 27, 2026 and Lufthansa by March 3, 2026, and said more airlines would follow in phases. It has not published a full airline by terminal list, so confirm your terminal on your booking, your airline app or fly2houston.com before you drive to the airport. The airport's airline directory lists 25 airlines, including Aeromexico, Air Canada, American, British Airways, Delta, Emirates, Frontier, JetBlue, KLM, Lufthansa, Qatar, United and Volaris. The airport map is at fly2houston.com/iah/map/.

• Terminal E opened in expanded form. Houston Airports says Air France, KLM and Lufthansa now check in only at Terminal E, with more international airlines moving from Terminal D in phases. The new checkpoint has 17 lanes, with TSA PreCheck and CLEAR+. The airport says lounge locations remain unchanged. If you arrive at Terminal D by mistake, you are directed to a 10-minute walk to Terminal E. If you parked in the A/B Garage, take the Subway directly to Terminal E.
• Terminal B is being rebuilt. The airport says the Terminal B ticketing lobby closed on January 21, 2025 and stays closed until late 2026. Its gates, numbered B40 to B68 on the official map, stay open. A United Club Fly opened in Terminal B South in late February 2025, and the old Terminal B United Club closed. Terminal B passengers check in, drop bags and clear TSA at Terminal C. The airport alerts page does not give a reopening date, so check fly2houston.com/iah/alerts/ before you fly.
• Terminal D has limited TSA hours. The airport says only two airlines currently operate there. The checkpoint is open 7 a.m. to 11:30 a.m. and 4:30 p.m. to 8 p.m. on Sunday, Monday, Wednesday and Friday, and 7 a.m. to 8 p.m. on Tuesday, Thursday and Saturday.
• The IAH Subway turned 45 in August 2026 and runs on its normal schedule.

IAH has two free trains that run every day. Which one you use depends on whether you are past security.

• Skyway (inside security): an above-ground people mover with stations in Terminals A, C and D/E. It leaves every 2 minutes, and the ride from Terminal A to Terminal D/E takes 4 minutes 15 seconds.
• Subway (before security): an underground train with stations in Terminals A, C and D/E and at the Airport Marriott. It leaves every 3 minutes, and one stop takes about 3 minutes. It runs from 3:15 a.m. to 12:15 a.m. and is closed from 12:15 a.m. to 3:15 a.m. A complete loop takes about 19 minutes.

Follow signs marked Skyway or Subway. Both are free.

Connecting between Terminals B, C and E on United? Houston Airports lists optional United shuttle buses that run between Terminal C and Terminal B, as an alternative to the Skyway during the Terminal B project. The airport advises allowing at least 20 minutes for transit between terminals.

Pick up outside Baggage Claim on the Arrivals level. Follow signs to Ground Transportation.

• Terminal A: north side, Door A-113. American Airlines and Spirit passengers are met at South Terminal Road, Door A-115.
• Terminal B: north side, Door B-101.
• Terminal C: north side, Door C-102.
• Terminal D: international arrivals go to the Terminal E international arrivals hall.
• Terminal E: south side, Door 103B (another airport list shows west side, Door E-103, so follow the door signs).

Drop off on the Departures level: Level 2 at Terminals A, C and E, and Level 1 at Terminal D. Parking is not allowed at the curb. The airport lists three free cell phone lots, open 24 hours: 17010 John F. Kennedy Boulevard, Houston, TX 77032; 5703 Will Clayton Parkway, Humble, TX 77338; and the Control Tower lot at 4500 Will Clayton Parkway, Humble, TX 77396. The driver must stay with the vehicle.

Free Wi-Fi covers each terminal and the parking garages. Open your Wi-Fi settings, choose Free Airport WIFI and accept the terms on the page that opens. For help, call the Wi-Fi help desk at 1-844-831-0999.

The on-airport Lost & Found is open daily from 10 a.m. to 6:30 p.m. Call 281-230-3299 or report a lost item through the airport's website.

Some items go somewhere else:

• TSA checkpoint: items lost at security are held by TSA. Call 281-443-5301.
• Passports: the airport says found passports go to U.S. Customs and Border Protection within 30 days. Call 281-230-4672.
• Rental car shuttle: contact Transdev at 281-233-1019.
• On a plane: the airline holds items lost in flight.

International passengers arrive at gates in Terminal D or Terminal E, walk through secure corridors and across sky bridges to Federal Inspection Services, clear Immigration and Passport Control, go downstairs, claim bags and clear Customs. Passengers ending their trip in Houston exit into the Meeter/Greeter Lobby on the first floor of the Terminal E International Arrivals Hall, where ground transportation is also available.

• Global Entry: members use kiosks in the immigration hall. Enrollment centers are on the Terminal E arrivals level and in the Terminal E secure area. IAH also offers Global Entry Enrollment on Arrival for travelers with conditional approval.
• Mobile Passport Control: the free app is available to U.S. citizens with a valid U.S. passport and to Canadian citizens with a valid Canadian passport and B-1 or B-2 visa status.
• Connecting internationally: turn right after Customs and go to the recheck counters. You are screened again at the TSA checkpoint of your departing terminal.
• Food, plants and other perishables: a CBP Agriculture Specialist can examine them. Duty is paid at the cashier window next to the Customs exit doors.
• Sales tax rebate for qualifying departing international passengers: Terminal D, before security, 7 a.m. to 7 p.m. daily.

Checkpoint hours for each terminal are on fly2houston.com/iah/security/, with live wait times for each checkpoint. See our IAH security guide for the full list.

CLEAR is in Terminal A North daily from 4 a.m. to 6 p.m. and in Terminal C Sunday to Friday from 4 a.m. to 7 p.m. and Saturday from 4 a.m. to 6 p.m. For Terminal E, the airport's security page lists only a post-security CLEAR enrollment center (daily 4 a.m. to 6 p.m.), but its announcement about the expanded terminal describes a 17-lane checkpoint with PreCheck and CLEAR+. Check the CLEAR app before you go.

• Nursing and baby rooms: Mamava pods at Terminal B near Gate B21, Terminal C near Gate C34 and Terminal E near Gate E12. Mother's Rooms are at Terminal A (near Gates A1 and A17) and Terminal C (near Gate C5). Nurseries are at Terminal C (across from Gate C4) and Terminal D (near Gate D15).
• Sensory rooms: Terminal A (inside the Mother's Room between Gate A2 and The Breakfast Klub) and Terminal D West Pier (between Gates D3 and D5). Call the Airport Operation Center at 281-230-1300 for access.
• Sunflower Lanyard: pick one up at any Houston Airports Information Booth, or email HAS_Accessibility@houstontx.gov before your trip.
• Service animal relief areas: after security near Gate A12, Gate B1, across from Gate C2, across from Gate D12 and across from Gate E12. Terminal E also has an outdoor area before security on the Arrivals level.
• Wheelchairs: request them through your airline.
• Baggage carts: found in baggage claim and near drop-off areas in each terminal, for a small fee. They take cash ($1, $5, $10 bills) or cards.

• Luggage storage: the airport does not list a left-baggage service. Ask your airline or hotel about holding bags.
• Currency exchange: Terminals B, C, D and E. Rates and fees apply.
• Showers: The Centurion Lounge in Terminal D (mezzanine level) and Minute Suites in Terminal C near Gate C14.
• Chapels: open 24/7 in Terminal C near Gates C29 to C33 and Terminal D near Gate D15. The airport also lists an ablution and prayer room in Terminal D near Gate D15.
• USO: Terminal D near Gate D8, daily 10 a.m. to 6 p.m.
• Information counters: four Airport Information Counters. The free Houston Airports app shows flight updates, directions and security wait times.
• MailSafe Express: ships items that TSA does not allow through the checkpoint to an address you choose, in about a week. A U.S. mailbox is on the Terminal A arrivals level.
• Water bottle filling stations are located throughout the terminals.
• Smoking: IAH is smoke-free. Smoking areas are outside, at least 25 feet from exit doors.