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IAD to HOU: distance & flight time
Washington (Washington Dulles International Airport) → Houston (William P Hobby Airport)
1,200 mi
1,931 km · 1,043 nm
3h 5m
estimated nonstop flight time
-1h
time difference · heading southwest
See live IAD→HOU fares Phone-only fares on this route — call free
Flight time details
1,200 miles nonstop takes roughly 3h 5m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- IAD — Washington Dulles International Airport · Washington, United States
- HOU — William P Hobby Airport · Houston, 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 IAD
Near HOU
- IAH · George Bush Intercontinental Houston Airport24 mi away
- EFD · Ellington Airport8 mi away
- AAP · Andrau Airpark19 mi away
- SGR · Sugar Land Regional Airport23 mi away
Frequently asked questions
How far is IAD from HOU?
The flight distance from Washington (IAD) to Houston (HOU) is 1,200 miles (1,931 km, 1,043 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to HOU?
A nonstop flight takes about 3h 5m 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 Washington and Houston?
Houston is 1 hour behind Washington.
What is the cheapest way to fly from IAD to HOU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–HOU that never appear on search engines, with no booking fees.