Major international hub · Houston, Texas
George Bush Intercontinental Airport (IAH)
A hub for United Airlines and Spirit Airlines. Compare flights from and to IAH, see which airlines fly nonstop, and find the cheapest month to travel.
IAH at a glance
- IATA / ICAO
- IAH / KIAH
- City
- Houston, Texas
- Time zone
- America/Chicago (UTC−5)
- Airport size
- Major international hub
- Coordinates
- 29.990, -95.337
- Metro area
- Houston (all airports)
Popular routes from IAH
Airlines at IAH
Hub airlines first, then carriers with nonstop routes from this airport.
- UAUnited AirlinesHub airline
- NKSpirit AirlinesHub airline
- AAAmerican AirlinesNonstop routes
- DLDelta Air LinesNonstop routes
- WNSouthwest AirlinesLow-cost carrier
- B6JetBlueNonstop routes
- ASAlaska AirlinesNonstop routes
- F9Frontier AirlinesLow-cost carrier
- SYSun Country AirlinesLow-cost carrier
- MXBreeze AirwaysLow-cost carrier
- ACAir CanadaNonstop routes
- WSWestJetNonstop routes
- G4Allegiant AirLow-cost carrier
Other Houston-area airports
IAH: common questions
Which airlines fly from IAH?
United Airlines, Spirit Airlines, American Airlines, Delta Air Lines and Southwest Airlines and others serve George Bush Intercontinental Airport. United Airlines and Spirit Airlines use IAH as a hub, so expect the widest choice of nonstop routes from them.
Is IAH a hub airport?
Yes — George Bush Intercontinental Airport is a hub or focus city for United Airlines and Spirit Airlines, which means frequent departures and many connecting itineraries pass through it.
How early should I arrive at IAH?
Plan on two hours before a domestic departure and three hours before an international one — security lines at large airports like IAH can stretch to 30 minutes or more at peak times. TSA PreCheck or CLEAR typically saves 15–30 minutes.
What other airports are near Houston?
William P. Hobby Airport (HOU) also serve the Houston area. Fares can differ by $50 or more between them, so compare all of them — our search shows every airport by name.