Airport gate intelligence · IAH
How many gates does Houston Bush Airport (IAH) have?
Houston Bush Airport (IAH) has 147 gates, with about 586 airline departures a day. United has the most (85), followed by American (6).
United flies 79% of the 75,670 seats leaving IAH each day. United has 1317% more gates and 1221% more seats than American. 6 gates are common use, shared by several airlines.
Gates, seats and flights by airline at IAH
| Airline | Gates held | Departures a day | Seats out a day | Share of seats | Seats per departure | Regional jets | Median turn | Tows a week |
|---|---|---|---|---|---|---|---|---|
| United | 85 | 474 | 59,603 | 79% | 126 | 44% | 87 min | 214 |
| American | 6 | 34 | 4,513 | 6% | 133 | 32% | 56 min | 0 |
| Delta | 5 | 24 | 3,457 | 5% | 145 | 0% | 66 min | 13 |
| Frontier | 3 | 18 | 4,004 | 5% | 219 | 0% | 63 min | 0 |
| JetBlue | 2 | 7 | 1,018 | 1% | 154 | 0% | 67 min | 1 |
| Volaris | 1 | 4 | 687 | 1% | 221 | 0% | 100 min | 0 |
| Alaska | 1 | 3 | 530 | 1% | 177 | 0% | 81 min | 0 |
| Aeroméxico | 1 | 2 | 280 | 0% | 166 | 0% | 121 min | 0 |
| British Airways | 1 | 2 | 0 | 0% | – | 0% | 116 min | 0 |
| Common use (shared) | 6 | |||||||
Average of 19 full days, Oct 1 to Oct 21, 2026. Gates held = the airline flying the gate most (regional partners count as their brand); 33 gates saw few or no flights (not in use or under repair). Seats are capacity, from each airline’s seat map per aircraft type; 2% of flights have no seat count yet.
On-time departures by airline at IAH
81% of departures left the gate on time (less than 15 minutes after their scheduled time). Airlines with 10+ departures a day.
| Airline | Departures a day | On time | 15+ min late |
|---|---|---|---|
| Delta | 24 | 82% | 18% |
| United | 474 | 81% | 19% |
| Frontier | 18 | 79% | 21% |
| American | 34 | 75% | 25% |
On time = left the gate less than 15 minutes after its scheduled time. Average of 19 full days.
What size aircraft IAH’s gates handle
Gates by the largest aircraft seen there at least twice. A gate that takes a wide-body also takes anything smaller.
Airlines at IAH: terminals, gates and nonstop routes
Other airlines
Regular flights, but no IAH gate listed in the flight data, so not on the map: Volaris El Salvador (12 flights to San Salvador); Cathay Pacific (8 flights to Anchorage).
Seen on only one of the full days collected (charters and occasional flights): Ethiopian (9 flights); GlobalX (3 flights); X7 (2 flights); Allegiant (2 flights); TE (1 flight); SX (1 flight).
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IAH gate questions
How many gates does Houston Bush Airport (IAH) have?
Houston Bush Airport (IAH) has 147 gates, with about 586 airline departures a day. United has the most (85), followed by American (6).
Which airline has the most gates at Houston Bush Airport (IAH)?
United, with 85 of the 147 gates at IAH (the airline flying each gate most; regional partners count as their brand).
How many flights a day leave Houston Bush Airport (IAH)?
About 586 airline departures a day (Oct 1 to Oct 21, 2026).
Which terminal is United in at IAH?
United flies from Terminal C’s Concourse C, Terminal B’s Concourse B, Terminal E’s Concourse E, Terminal A’s Concourse A and Terminal D’s Concourse D at Houston Bush Airport (IAH).
How many gates does United have at IAH?
85 gates, with about 474 departures and 59,603 seats a day.
How many gates does American have at IAH?
6 gates, with about 34 departures and 4,513 seats a day.
How many gates does Delta have at IAH?
5 gates, with about 24 departures and 3,457 seats a day.
How many seats leave IAH each day?
About 75,670 seats on 586 airline departures a day (average of 19 full days, Oct 1 to Oct 21, 2026).
What is the typical turn time at IAH?
85 minutes at the gate from arrival to departure (median of every turn measured).
Which airline leaves IAH on time most often?
Delta Air Lines: 82% of its departures left the gate less than 15 minutes after their scheduled time, against 81% for all airlines at IAH (19 full days, Oct 1 to Oct 21, 2026).
How often do flights at IAH go back to the gate after pushing back?
34 departures in 19 days probably went back to the gate before taking off (a mechanical problem, fuel, a passenger taken off), and 2 came back and changed planes.
How many aircraft tows happen at IAH?
About 230 tows a week: a plane that arrives at one gate and leaves from another was towed between them. Planes we didn't see arrive aren't counted.