George Bush Intercontinental (IAH) is Houston's big airport — five terminals, dozens of airlines, and a layout where showing up at the wrong terminal can cost you 20 to 30 minutes you do not have. The airport sits about 17 miles north of downtown via I-45 North and Beltway 8 to JFK Boulevard: 35 to 50 minutes in normal traffic, up to 75 in rush. This guide maps which terminal your airline uses, where pickups actually happen, and how to time the whole arrival so the airport is the easy part of the trip.
Which terminal: the airline map
Terminal A handles Delta and Frontier mainline domestic flights. Terminal B is the United Express regional operation. Terminal C is United mainline domestic — the bulk of United's Houston flying. Terminal D serves United international arrivals plus foreign-flag carriers, and Terminal E handles additional international traffic. The rule that saves the most time: tell your driver or shuttle your airline when you book, not just the airport code. IAH is too big to guess — a pickup staged at C when you land at E means a cross-airport reposition while you wait curbside. International arrivals should also budget the federal inspection time inside the terminal before the pickup clock starts.
Getting there: timing the 17 miles
From downtown, the standard path is I-45 North to Beltway 8 east, exiting onto JFK Boulevard into the airport. In the middle of the day that runs 35 to 50 minutes; morning and evening rush can stretch it to 75. Travelers coming from the Woodlands, Spring, or Conroe approach from the north and skip the downtown freeways entirely, while Katy, Cypress, Humble, and Atascocita feeders join via the Beltway. The airport recommends arriving two hours before domestic departures and three before international — add the drive on top, so a 9 a.m. domestic flight means leaving downtown around 6:30 a.m. Full routing detail, including the return direction, is on the Houston to IAH page and the IAH to Houston return page.
Where pickups happen
Private pickups stage curbside at the terminal your flight actually uses — confirm the letter before you land, because the terminals do not connect landside without a shuttle ride between them. After landing, a practical rule is to set the pickup 30 minutes after touchdown for domestic flights and 45 for international, which covers deplaning and bags; travelers without checked bags can tighten that to 15 and 30 minutes respectively. Share your flight number at booking so the driver tracks delays automatically — pickup times shift with the actual landing time instead of stranding you at the curb or circling the terminal. If your flight changes terminals or numbers, a quick text to dispatch fixes the meeting point before you reach baggage claim.
Inside the airport: connections and transfers
Connecting between terminals airside is handled by the inter-terminal train inside security, plus the underground walkway system — follow the signs for your departure terminal rather than exiting to the curb. If you exit security by mistake, you will need to re-clear, so double-check the terminal on the departure boards before riding between them. International-to-domestic connections clear federal inspection at D or E first; build an extra 30 to 45 minutes into those itineraries beyond the normal connection window. Families should note that stroller pickup curbside goes fastest when one adult waits with the bags at the designated meeting point while the other brings the car seat or stroller down.
Why travelers book the pickup in advance
Pre-booking the IAH pickup locks three things: the right terminal meeting point, a driver tracking the flight, and a pickup on your schedule around the clock — including the red-eye arrivals when curbside options thin out. Rides run door to door with just your party, drivers go through nationwide fingerprint background checks, and date, time, or address changes stay free when flights move. For groups, the same flat door-to-door arrangement beats coordinating two rideshares with luggage at midnight; for business travelers, it turns the 35 to 75 minute drive into a quiet window for work or rest instead of a parking and shuttle-bus lottery.
Frequently asked questions
Which terminal does my airline use at IAH?
Terminal A serves Delta and Frontier domestic, B is United Express regional, C is United mainline domestic, D is United international plus foreign carriers, and E handles additional international flights.
How long does it take to get to IAH from downtown Houston?
About 17 miles via I-45 North and Beltway 8: 35 to 50 minutes normally, up to 75 minutes in rush-hour traffic.
How early should I arrive at IAH?
Two hours before domestic departures and three hours before international, plus the drive time from your starting point.
When should I set my pickup after landing at IAH?
Thirty minutes after touchdown for domestic flights and 45 for international covers deplaning and bags; 15 and 30 minutes work with no checked bags.
What happens if my flight is delayed or changes terminals?
Share your flight number at booking so the driver tracks it and the pickup shifts with the actual landing time. Text dispatch if the terminal changes.
