George Bush Intercontinental Airport
Houston, United StatesIAH / KIAH
International hub · 159 direct destinations · 5 runways · longest runway 12,001 ft
74 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Houston → Dulles
IAH
HoustonGeorge Bush Intercontinental Airport
HoustonGeorge Bush Intercontinental AirportIADDullesWashington Dulles International Airport
DullesWashington Dulles International Airport- Distance
- 1,189 mi
- Estimated flight time
- ~2h 55m
Dulles is currently 1 hour ahead of Houston.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 5 flights a day, observed from October 2025 to September 2026.
- 5
- flights per day
- 6
- busiest month · Oct
- 4
- quietest month · Dec
- 2 hr 31 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 4Jan2026
- 4Feb
- 5Mar
- 5Apr
- 5May
- 6Jun
- 5Jul
- 5Aug
- 6Sep
- 6Oct2025
- 5Nov
- 4Dec
Airlines
Who flies it
United Airlinesall year
CommuteAirall year
Mesa Airlinesspring
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
- 5.1Mon
- 5.2Tue
- 4.9Wed
- 4.9Thu
- 5.1Fri
- 5.6Sat
- 5.1Sun
Fleet
Aircraft observed
- Boeing 737-900B73943%
- Boeing 737 MAX 9B39M15%
- Boeing 737-800B73810%
- Airbus A320A3206%
- Boeing 737 MAX 8B38M5%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 4 | 132 |
|
| February 2026 | 4 | 117 |
|
| March 2026 | 5 | 167 |
|
| April 2026 | 5 | 141 |
|
| May 2026 | 5 | 152 |
|
| June 2026 | 6 | 183 |
|
| July 2026 | 5 | 164 |
|
| August 2026 | 5 | 151 |
|
| September 2026 | 6 | 166 |
|
| October 2025 | 6 | 178 |
|
| November 2025 | 5 | 157 |
|
| December 2025 | 4 | 141 |
|
Airlines observed on this route
From observed callsign routes on IAH-IAD - 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 Dulles: 171.
The airports on this route
Washington Dulles International Airport
Dulles, United StatesIAD / KIAD
International hub · 171 direct destinations · 4 runways · longest runway 11,499 ft
75 °F · ClearSource: 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 Dulles
The observed direct connection between George Bush Intercontinental Airport (IAH) and Washington Dulles International Airport (IAD) covers approximately 1,189 mi. The estimated flight time is around 2h 55m. CommuteAir, Mesa Airlines 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 Dulles by air?
- The great-circle distance between George Bush Intercontinental Airport and Washington Dulles International Airport is approximately 1,189 mi.
- How long is the flight from Houston to Dulles?
- 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 Dulles?
- Yes, a direct connection between IAH and IAD has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: CommuteAir, Mesa Airlines and United Airlines.
- How often is there a flight from Houston to Dulles?
- On average around 5 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 1,849 observed flights. Mainly United Airlines, CommuteAir, Mesa Airlines. That is an observation, not a timetable.
- What is the current time difference between Houston and Dulles?
- Dulles 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.