WashingtonHoustonDirect FlightsIAD–IAH
Washington (Washington Dulles International Airport) to Houston (George Bush Intercontinental Airport).
Flight time from IAD to IAH is estimated at about 3h 2m, based on the 1,189-mile great-circle distance. Our current captured departure sample includes 6-7/day across 1 captured airline, with United Airlines appearing most often in that sample. Captured departure times run from 06:30 to 22:20 local time.
Plan this routeAt a glance
| Est. flight time | Distance | Captured freq. | Type |
|---|---|---|---|
| ~3h 2m Estimated from great-circle distance — no tracked flights yet. | 1,189 mi | 6-7/day From the current provider sample; confirm live timetables before booking. | Domestic |
Airlines on this route
Captured airlines for IAD to IAH
Our current provider sample includes 6-7/day from IAD to IAH across 1 captured airline.
- First departure
- 06:30
- Last departure
- 22:20
- Cadence
- ~every 2 hours
- Captured departures/day
- 12
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| United Airlines | 6-7/day | Boeing 737, Airbus A320 family · Seat map | 06:3008:40 |
Aircraft on this route
Flying the other way?
IAH to IAD flights — 6-7/day on 1 airline →Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for IAD to IAH, last seen June 15, 2026. Frequency uses 48 scheduled departures across 7 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.
Route FAQ
How long is the flight from IAD to IAH?
The IAD to IAH flight time is estimated at about 3h 2m from great-circle distance until enough tracked flights are available.
How far is IAD from IAH?
IAD to IAH is about 1,189 miles by air.
Which airlines fly from IAD to IAH?
Our current provider sample for IAD to IAH includes United Airlines. Confirm live timetables before booking.
What aircraft fly from IAD to IAH?
Aircraft captured in our current provider sample for IAD to IAH include Boeing 737, Airbus A320 family.