George Bush Intercontinental Airport
Houston, United StatesIAH / KIAH
International hub · 159 direct destinations · 5 runways · longest runway 12,001 ft
71 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Houston → Washington
IAH
HoustonGeorge Bush Intercontinental Airport
HoustonGeorge Bush Intercontinental AirportDCAWashingtonRonald Reagan Washington National Airport
WashingtonRonald Reagan Washington National Airport- Distance
- 1,207 mi
- Estimated flight time
- ~2h 55m
Washington is currently 1 hour ahead of Houston.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 9 flights a day, observed from October 2025 to September 2026.
- 9
- flights per day
- 10
- busiest month · Oct
- 8
- quietest month · Dec
- 2 hr 31 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 9Jan2026
- 9Feb
- 8Mar
- 9Apr
- 8May
- 9Jun
- 9Jul
- 8Aug
- 9Sep
- 10Oct2025
- 9Nov
- 8Dec
Airlines
Who flies it
United Airlinesall year
PSA Airlinesspring
Republic Airwayswinter
Mesa Airlinesnow and then
Through the day
Departure times
Local time in Houston. Most departures between 17:00 and 20:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 8.9Mon
- 8.7Tue
- 8.6Wed
- 8.7Thu
- 8.8Fri
- 6Sat
- 8Sun
Fleet
Aircraft observed
- Airbus A319A31917%
- Boeing 737-700B73713%
- Embraer 175E75L13%
- Boeing 737-800B73812%
- Airbus A320A32012%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 9 | 236 |
|
| February 2026 | 9 | 232 |
|
| March 2026 | 8 | 249 |
|
| April 2026 | 9 | 253 |
|
| May 2026 | 8 | 244 |
|
| June 2026 | 9 | 248 |
|
| July 2026 | 9 | 251 |
|
| August 2026 | 8 | 242 |
|
| September 2026 | 9 | 268 |
|
| October 2025 | 10 | 280 |
|
| November 2025 | 9 | 248 |
|
| December 2025 | 8 | 227 |
|
Airlines observed on this route
From observed callsign routes on IAH-DCA - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Houston: 159.
- Direct destinations observed from Washington: 111.
The airports on this route
Ronald Reagan Washington National Airport
Washington, United StatesDCA / KDCA
Major airport · 111 direct destinations · 3 runways · longest runway 7,169 ft
67 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Houston to Washington
The observed direct connection between George Bush Intercontinental Airport (IAH) and Ronald Reagan Washington National Airport (DCA) covers approximately 1,207 mi. The estimated flight time is around 2h 55m. Mesa Airlines, PSA Airlines, Republic Airways and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Houston from Washington by air?
- The great-circle distance between George Bush Intercontinental Airport and Ronald Reagan Washington National Airport is approximately 1,207 mi.
- How long is the flight from Houston to Washington?
- Based on the distance, the estimated flight time is about 2h 55m. This is an estimate, not a schedule.
- Is there a direct connection from Houston to Washington?
- Yes, a direct connection between IAH and DCA has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Mesa Airlines, PSA Airlines, Republic Airways and United Airlines.
- How often is there a flight from Houston to Washington?
- On average around 9 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 2,978 observed flights. Mainly United Airlines, PSA Airlines, Republic Airways. That is an observation, not a timetable.
- What is the current time difference between Houston and Washington?
- Washington is currently 1 hour ahead of Houston.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.