Houston (IAH) to Washington (DCA) flights
2 airlines fly nonstop from Houston (IAH) to Washington (DCA): American Airlines and United Airlines. The two airports are 1,206 miles (1,941 km) apart. American Airlines is in oneworld and United Airlines is in Star Alliance. There are also 64 ways to fly it with one stop, through Huntsville, Knoxville and Chattanooga and more.
Airlines flying nonstop from IAH to DCA
- American Airlinesoneworld · bookable with 9 programsWho books it
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAH to DCA 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
- Alaska Atmos RewardsBooks American Airlines
- American AAdvantageBooks American Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- British Airways ClubBooks American Airlines
- Cathay Pacific Asia MilesBooks American Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- Finnair PlusBooks American Airlines
- Iberia ClubBooks American Airlines
- JAL Mileage BankBooks American Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Qantas Frequent FlyerBooks American Airlines
- Qatar Airways Privilege ClubBooks American 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
IAH to DCA with one stop
64 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Huntsville (HSV)United Airlines, then American Airlines
- Via Knoxville (TYS)United Airlines, then American Airlines and Delta Air Lines
- Via Chattanooga (CHA)United Airlines, then American Airlines
- Via Jackson (JAN)United Airlines, then American Airlines
- Via Birmingham (BHM)United Airlines, then American Airlines and Delta Air Lines
- Via Nashville (BNA)United Airlines, then American Airlines, Southwest Airlines and 1 more
- Via Memphis (MEM)United Airlines, then American Airlines and Delta Air Lines
- Via Greenville (GSP)United Airlines, then American Airlines
- Via Atlanta (ATL)Delta Air Lines the whole way
- Via Baton Rouge (BTR)United Airlines the whole way
- Via Charlotte (CLT)American Airlines the whole way
- Via Montgomery (MGM)United Airlines, then American Airlines
- Via Louisville (SDF)United Airlines, then American Airlines
- Via Little Rock (LIT)United Airlines, then American Airlines
- Via Raleigh/Durham (RDU)United Airlines and Frontier Airlines, then American Airlines and Delta Air Lines
IAH to DCA: common questions
Which airlines fly nonstop from IAH to DCA?
American Airlines (oneworld) and United Airlines (Star Alliance) fly nonstop from Houston (IAH) to Washington (DCA).
How far is Houston from Washington by plane?
Houston (IAH) and Washington (DCA) are 1,206 miles (1,941 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book IAH to DCA award flights?
22 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, Alaska Atmos Rewards, American AAdvantage, ANA Mileage Club, Avianca LifeMiles, British Airways Club, Cathay Pacific Asia Miles and 14 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does IAH to DCA cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for IAH to DCA with taxes and fees.
Where can I connect between Houston and Washington?
The most direct connections are through Huntsville (HSV), Knoxville (TYS), Chattanooga (CHA), Jackson (JAN) and Birmingham (BHM). On 17 of them the same airline flies both flights, for example Delta Air Lines through Atlanta.
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.