Great-circle route IAH → DCA. 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 Houston to Washington is approximately 2h 57m nonstop. The distance is 1,206 miles (1,941 km). There are about 17 nonstop flights from Houston to Washington 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 |
|---|---|---|---|---|
| IAH → DCA George Bush Intercontinental Houston Airport to Ronald Reagan Washington National Airport |
2h 57m | 1,206 mi | 65/wk | American Airlines, United Airlines |
| IAH → IAD George Bush Intercontinental Houston Airport to Washington Dulles International Airport |
2h 55m | 1,189 mi | 36/wk | United Airlines |
| HOU → DCA William P Hobby Airport to Ronald Reagan Washington National 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 Houston to Washington, including American Airlines, Southwest Airlines, United Airlines.
Recent scheduled departures on this route have used the Canadair reg jet 700, Boeing 737, Boeing 737-700, Airbus A319 and 3 other types.
Aircraft assignments change by season and by time of day.
The distance from Houston to Washington 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 122 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 IAH–DCA 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 George Bush Intercontinental Houston Airport and Ronald Reagan Washington National Airport.
American Airlines, Southwest Airlines, United Airlines.
Recent scheduled departures have used the Canadair reg jet 700, Boeing 737, Boeing 737-700, Airbus A319. Assignments change by season and by time of day.
IAH to DCA, IAH to IAD, HOU to DCA. Flight times differ slightly between them because the airports are not in the same place.
