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IAH to IAD: distance & flight time
Houston (George Bush Intercontinental Houston Airport) → Washington (Washington Dulles International Airport)
1,189 mi
1,913 km · 1,033 nm
3h 3m
estimated nonstop flight time
+1h
time difference · heading northeast
See live IAH→IAD fares Phone-only fares on this route — call free
Flight time details
1,189 miles nonstop takes roughly 3h 3m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- IAH — George Bush Intercontinental Houston Airport · Houston, United States
- IAD — Washington Dulles International Airport · Washington, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near IAH
- DWH · David Wayne Hooks Memorial Airport14 mi away
- IWS · West Houston Airport23 mi away
- AAP · Andrau Airpark23 mi away
- HOU · William P Hobby Airport24 mi away
Frequently asked questions
How far is IAH from IAD?
The flight distance from Houston (IAH) to Washington (IAD) is 1,189 miles (1,913 km, 1,033 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAH to IAD?
A nonstop flight takes about 3h 3m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Houston and Washington?
Washington is 1 hour ahead of Houston.
What is the cheapest way to fly from IAH to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAH–IAD that never appear on search engines, with no booking fees.