DiscoverAirports

George Bush Intercontinental Airport (IAH)

Houston, Texas KIAH #15 US airport by passengers

About 23 miles north of downtown Houston, near the Beltway 8 and I-45 corridor.

FAA status
Checking Updated 41 min ago
Weather now
VFR 65°F Observed 1 h ago
Late departures
26.6%May 2026 to July 2026
Security line
No recent reportsAdd yours

IAH at a glance

George Bush Intercontinental is Houston's main international airport and a significant gateway to Latin America. United uses most of the terminal space, so connecting travelers often move between several buildings.

The airport has five terminals, A through E. The Skyway train and the underground Subway connect the terminals, so it is generally possible to change between them without going outside.

Main airlines: United Airlines operates its largest Texas hub here, with a strong network to Latin America. Several other airlines also serve the airport.

FAA delay status for IAH

We are waiting for the next FAA update. Check your airline for the status of a specific flight.

Source: FAA National Airspace System Status, checked 41 min ago. Airline-specific delays are not shown here.

Current conditions at IAH

VFR

65°F18°C

Good visibility and high cloud base. Normal operations are typical.

Wind
070° 5 mph
Visibility
10+ mi
Clouds
Clear
Ceiling
None
Pressure
29.94 inHg

METARMETAR KIAH 101053Z 07004KT 10SM CLR 18/16 A2994 RMK AO2 SLP137 T01830156

Source: NOAA Aviation Weather Center. Observed 1 h ago.

Full weather, TAF, forecast and runways →

On-time performance at IAH

Based on 30,252 departures from May 2026 to July 2026. A flight counts as late when it leaves 15 or more minutes after schedule.

26.6%Departures late
23.8%Arrivals late
0.85%Cancelled
21.9 minAverage departure delay
On-time performance by airline at IAH
AirlineDeparturesLateCancelled
United Airlines 18,951 25.7% 0.31%
SkyWest Airlines 3,730 26.4% 0.56%
American Airlines 2,258 30.1% 1.99%
Delta Air Lines 2,217 24.2% 1.13%
Frontier Airlines 1,755 29.7% 2.62%
JetBlue Airways 355 52.7% 5.92%

Source: Bureau of Transportation Statistics, On-Time Performance of reporting carriers. Smaller regional carriers and some airlines are not included.

Late departures by month

AprMayJunJul

Terminals

Terminal A

Primarily United domestic flights.

Terminal B

United Airlines domestic flights.

Terminal C

The main United terminal, with both domestic and international flights.

Terminal D

International flights, including many non-United airlines, and the international arrivals facility.

Terminal E

United international and domestic flights.

Moving between terminals

The Skyway is a free train that runs between the terminals, outside security. The Subway, an underground train, connects terminals inside security, so connecting passengers can usually change terminals without leaving the secure area. Follow the signs.

Terminal guide →

Getting to and from IAH

  • Bus

    METRO bus

    METRO local buses run to the airport. Service to downtown is limited, so check the timetable.

  • Shuttle

    Skyway

    A free train linking the terminals and the parking garages.

  • Rideshare and taxi

    Terminal curbs

    Taxi and rideshare pick-up is at designated areas at each terminal. The trip to downtown can take 30 to 60 minutes depending on traffic.

All ground transportation →

Tips for IAH

  • Summer thunderstorms and hurricane season (June to November) can cause delays and cancellations.
  • If you have a tight connection between terminals, the Subway (inside security) is the fastest way.
  • Allow extra time for the trip to or from downtown: Houston traffic is unpredictable.

Frequently asked questions

How do I get from IAH to downtown Houston?

By taxi or rideshare, typically 30 to 60 minutes. METRO bus service is limited.

How do I change terminals?

Use the Skyway outside security, or the Subway inside security.

What is the difference between IAH and Hobby (HOU)?

IAH is the large international airport north of the city. Hobby is a smaller airport southeast of downtown.

How busy is IAH?

About 23,265,028 passengers boarded flights at George Bush Intercontinental Airport in 2025, according to FAA enplanement data. That ranks it number 15 among US airports.

How often are flights late at IAH?

Over May 2026 to July 2026, 26.6% of departures at IAH left 15 or more minutes late, and 0.85% of flights were cancelled (Bureau of Transportation Statistics).

Guide content last reviewed October 8, 2026. Report a correction