Great-circle route DCA → IAH. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
The flight time from Washington to Houston is approximately 2h 57m nonstop. The distance is 1,206 miles (1,941 km). There are about 17 nonstop flights from Washington to Houston per day.
That is a great-circle estimate, not a scheduled block time. An airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
| Route | Est. time | Distance | Frequency | Airlines |
|---|---|---|---|---|
| DCA → IAH Ronald Reagan Washington National Airport to George Bush Intercontinental Houston Airport |
2h 57m | 1,206 mi | 64/wk | American Airlines, United Airlines |
| IAD → IAH Washington Dulles International Airport to George Bush Intercontinental Houston Airport |
2h 55m | 1,189 mi | 35/wk | United Airlines |
| DCA → HOU Ronald Reagan Washington National Airport to William P Hobby Airport |
2h 58m | 1,217 mi | 21/wk | Southwest Airlines |
Frequencies come from our most recent schedule sample. Where a pairing shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
3 airlines fly nonstop from Washington to Houston, including American Airlines, Southwest Airlines, United Airlines.
Recent scheduled departures on this route have used the Boeing 737, Canadair reg jet 700, Airbus A319, Boeing 737-700 and 2 other types.
Aircraft assignments change by season and by time of day.
The distance from Washington to Houston is 1,206 miles, or 1,941 kilometres.
| Great-circle distance | 1,206 mi |
| Kilometres | 1,941 km |
| Nautical miles | 1,048 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 3 airlines fly it nonstop, with about 120 departures a week, across 3 airport pairings. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 2h 57m in the air on the DCA–IAH nonstop. That is a great-circle estimate from the 1,206-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
1,206 miles (1,941 km) great-circle between Ronald Reagan Washington National Airport and George Bush Intercontinental Houston Airport.
American Airlines, Southwest Airlines, United Airlines.
Recent scheduled departures have used the Boeing 737, Canadair reg jet 700, Airbus A319, Boeing 737-700. Assignments change by season and by time of day.
DCA to IAH, IAD to IAH, DCA to HOU. Flight times differ slightly between them because the airports are not in the same place.
