Dulles (IAD) to Houston (IAH) flights
One airline flies nonstop from Dulles (IAD) to Houston (IAH): United Airlines. The two airports are 1,189 miles (1,914 km) apart. United Airlines is in Star Alliance. There are also 49 ways to fly it with one stop, through Huntsville, Knoxville and Nashville and more.
Airlines flying nonstop from IAD to IAH
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAD to IAH with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
IAD to IAH with one stop
49 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Huntsville (HSV)United Airlines the whole way
- Via Knoxville (TYS)United Airlines the whole way
- Via Nashville (BNA)United Airlines the whole way
- Via Greenville (GSP)United Airlines the whole way
- Via Atlanta (ATL)Delta Air Lines, United Airlines and 1 more the whole way
- Via Charlotte (CLT)American Airlines and United Airlines the whole way
- Via Louisville (SDF)United Airlines the whole way
- Via Richmond (RIC)United Airlines the whole way
- Via Cincinnati (CVG)United Airlines the whole way
- Via New Orleans (MSY)United Airlines the whole way
- Via Mobile (MOB)United Airlines the whole way
- Via Raleigh/Durham (RDU)United Airlines the whole way
- Via Columbus (CMH)United Airlines the whole way
- Via Pittsburgh (PIT)United Airlines the whole way
- Via Indianapolis (IND)United Airlines the whole way
IAD to IAH: common questions
Which airlines fly nonstop from IAD to IAH?
United Airlines (Star Alliance) flies nonstop from Dulles (IAD) to Houston (IAH).
How far is Dulles from Houston by plane?
Dulles (IAD) and Houston (IAH) are 1,189 miles (1,914 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book IAD to IAH award flights?
13 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, JetBlue TrueBlue, Lufthansa Miles & More and 5 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does IAD to IAH cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for IAD to IAH with taxes and fees.
Where can I connect between Dulles and Houston?
The most direct connections are through Huntsville (HSV), Knoxville (TYS), Nashville (BNA), Greenville (GSP) and Atlanta (ATL). On 47 of them the same airline flies both flights, for example United Airlines through Huntsville.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.