Airport gate intelligence · IAD
How many gates does Washington Dulles Airport (IAD) have?
Washington Dulles Airport (IAD) has 122 gates, with about 350 airline departures a day. United has the most (80), followed by Delta (4).
United flies 79% of the 42,583 seats leaving IAD each day. United has 1900% more gates and 1582% more seats than Delta. 17 gates are common use, shared by several airlines.
Gates, seats and flights by airline at IAD
| Airline | Gates held | Departures a day | Seats out a day | Share of seats | Seats per departure | Regional jets | Median turn | Tows a week |
|---|---|---|---|---|---|---|---|---|
| United | 80 | 263 | 33,502 | 79% | 128 | 49% | 81 min | 121 |
| Delta | 4 | 17 | 1,992 | 5% | 117 | 47% | 56 min | 0 |
| American | 3 | 9 | 1,078 | 3% | 123 | 43% | 53 min | 0 |
| Alaska | 2 | 3 | 615 | 1% | 177 | 0% | 92 min | 0 |
| Frontier | 1 | 6 | 1,318 | 3% | 212 | 0% | 63 min | 0 |
| British Airways | 1 | 3 | 681 | 2% | 332 | 0% | 105 min | 0 |
| Copa | 1 | 3 | 481 | 1% | 163 | 0% | 111 min | 0 |
| Air Canada | 1 | 5 | 350 | 1% | 76 | 100% | 40 min | 1 |
| Etihad | 1 | 1 | 290 | 1% | 290 | 0% | 312 min | 0 |
| Breeze | 1 | 1 | 195 | 0% | 137 | 0% | 41 min | 0 |
| TAP | 1 | 2 | 0 | 0% | – | 0% | 117 min | 0 |
| Lufthansa | 1 | 3 | 0 | 0% | – | 0% | 110 min | 6 |
| Ethiopian | 1 | 1 | 0 | 0% | – | 0% | 108 min | 0 |
| Austrian | 1 | 1 | 0 | 0% | – | 0% | 211 min | 7 |
| Common use (shared) | 17 | |||||||
Average of 19 full days, Oct 3 to Oct 21, 2026. Gates held = the airline flying the gate most (regional partners count as their brand); 6 gates saw few or no flights (not in use or under repair). Seats are capacity, from each airline’s seat map per aircraft type; 7% of flights have no seat count yet.
On-time departures by airline at IAD
84% of departures left the gate on time (less than 15 minutes after their scheduled time). Airlines with 10+ departures a day.
On time = left the gate less than 15 minutes after its scheduled time. Average of 19 full days.
What size aircraft IAD’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 IAD: terminals, gates and nonstop routes
Other airlines
Regular flights, but no IAD gate listed in the flight data, so not on the map: Southwest (16 flights to Baltimore, Lubbock and Midland, TX); K9 (8 flights to Portland, ME and Raleigh/Durham).
Seen on only one of the full days collected (charters and occasional flights): Tradewind (14 flights); Brussels Airlines (2 flights to Brussels); JetBlue (2 flights to New York JFK); Air Europa (1 flight); O2 (1 flight); TE (1 flight).
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IAD gate questions
How many gates does Washington Dulles Airport (IAD) have?
Washington Dulles Airport (IAD) has 122 gates, with about 350 airline departures a day. United has the most (80), followed by Delta (4).
Which airline has the most gates at Washington Dulles Airport (IAD)?
United, with 80 of the 122 gates at IAD (the airline flying each gate most; regional partners count as their brand).
How many flights a day leave Washington Dulles Airport (IAD)?
About 350 airline departures a day (Oct 3 to Oct 21, 2026).
Which terminal is United in at IAD?
United flies from Concourses D, A, C and Z at Washington Dulles Airport (IAD).
How many gates does United have at IAD?
80 gates, with about 263 departures and 33,502 seats a day.
How many gates does Delta have at IAD?
4 gates, with about 17 departures and 1,992 seats a day.
How many gates does American have at IAD?
3 gates, with about 9 departures and 1,078 seats a day.
How many seats leave IAD each day?
About 42,583 seats on 350 airline departures a day (average of 19 full days, Oct 3 to Oct 21, 2026).
What is the typical turn time at IAD?
83 minutes at the gate from arrival to departure (median of every turn measured).
Which airline leaves IAD on time most often?
Delta Air Lines: 85% of its departures left the gate less than 15 minutes after their scheduled time, against 84% for all airlines at IAD (19 full days, Oct 3 to Oct 21, 2026).
How often do flights at IAD go back to the gate after pushing back?
63 departures in 19 days probably went back to the gate before taking off (a mechanical problem, fuel, a passenger taken off), and 7 came back and changed planes.
How many aircraft tows happen at IAD?
About 135 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.