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Houston Airports publishes live flight search, security waits, maps and detailed connection instructions for IAH.
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Landing in Houston? Keep terminal maps, rideshare and airline alerts available after airport Wi‑Fi.
Houston Airports publishes live flight search, security waits, maps and detailed connection instructions for IAH.
Loading…IAH is a five-terminal Houston hub with two different inter-terminal trains: the post-security Skyway and the pre-security Subway. AirportBoard makes that distinction clear alongside official flight and connection guidance.
Fast, source-backed answers for the airport questions travelers search before they fly.
IAH has five terminals: A, B, C, D and E.
Skyway is free and operates after security; the Subway is the free pre-security terminal train.
Houston Airports says the Skyway ride from Terminal A to D/E takes about four minutes and fifteen seconds.
Skyway is the free above-ground train for passengers already inside security; it connects all five terminals.
The underground Subway connects terminals before security and also serves the Houston Airport Marriott.
Taxis and ride apps use specific pickup zones, so confirm the current terminal instructions before leaving baggage claim.
Verify with official source ↗For an airside connection, Skyway is usually the correct terminal-transfer system. International arrivals entering the U.S. follow immigration, baggage and customs before continuing.
Check baggage-claim and storage arrangements carefully: Houston publishes terminal-specific baggage rules, including some United bags delivered outside the arrival terminal.
Luggage-storage checklist →IAH lounge options span several terminals, especially the international D/E complex. Verify the secure-side route from the lounge to the departure gate.
Choose by transfer friction, not only nightly price. Compare airside transit hotels, terminal-connected hotels and nearby properties with reliable shuttle access.
Model security, passport control, terminal changes, bags and self-transfer risk before relying on the headline layover time.
Check connection time →Original, source-backed pages for transport, transfers, layovers and arrival decisions.
The single most important IAH transfer distinction: inside security or outside security.
Updated 2026-10-01 · Read guide →What happens after a non-precleared international arrival at Houston IAH.
Updated 2026-10-01 · Read guide →How to plan a Houston connection around the five-terminal layout and two train systems.
Updated 2026-10-01 · Read guide →A reusable checklist for separate-ticket connections where the airline does not protect the onward flight.
Updated 2026-10-01 · Read guide →A universal method for deciding whether to leave the airport during a layover.
Updated 2026-10-01 · Read guide →A provider-neutral guide to travel eSIM setup, device compatibility, activation timing and the gap between airport Wi‑Fi and mobile data.
Updated 2026-10-01 · Read guide →AirportBoard separates live open data from editorial guidance. Operational flight status stays with the official airport/airline source. Aviation weather comes from NOAA/NWS. Airport facts and transport guidance are checked against official airport or public-transport sources.
Fast answers with operational caveats where they matter.
Use Skyway if you are already inside security; use the underground Subway for landside/pre-security terminal movement.
Houston Airports says both systems connect the terminal complex; the Subway also serves the airport Marriott.
Non-precleared international arrivals go through immigration, collect baggage and clear customs before continuing.
Last editorial verification: 2026-10-01. Gate, visa, security, transport and operating details can change. Confirm time-sensitive decisions with the airport, airline or transport operator.
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Explore →Use verified terminal guidance, then calculate the connection or departure buffer instead of guessing from the scheduled time alone.