Washington to Houston (DCA–IAH) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
DCA–IAH is served by 2 airlines with nonstop service. United Airlines and American Airlines lead the route. The flight covers 1,207 miles in approximately 3h 26m. Beyond nonstop, 87 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines Also: EK, NZ | 54 | 319, 320, 737, 738, 73G | 3h28-3h52 | Star Alliance | EK, NZ | |
| AA American Airlines | 43 | CR9, E75 | 3h26-4h37 | Oneworld | – |
Weekly Schedule Pattern
Connection Landscape
Other ways to reach Houston from Washington
| Metric | DCA→IAH | IAD→IAH | BWI→IAH |
|---|---|---|---|
| Distance from DCA | – | 23 mi | 30 mi |
| Nonstop airlines | 2 | 11 | 8 |
| Weekly flights | 118 | 119 | 100 |
| Flight time | 3h 26m | 3h 9m | 3h 4m |
| Departure OTP | 88% | – | – |
Travel Essentials
DCA: EDT · IAH: CDT
When it's 6:00 PM in Washington, it's 5:00 PM in Houston.
The DC Metro (Yellow and Blue lines) connects the airport directly to downtown Washington in 15–25 minutes from most central stations ($2.25–$3.85 depending on distance and time of day). The Reagan National Airport station is inside the terminal complex with a direct indoor walkway. Metro runs from about 05:00 to midnight Sunday–Thursday, and until 01:00 on Friday–Saturday.Taxis and Uber/Lyft from the city centre cost $15–30 depending on destination and traffic. DCA is one of the most transit-accessible major US airports. Driving is straightforward via the George Washington Memorial Parkway; short-term parking at the terminal costs from $5 for 20 minutes. No personal vehicles are allowed to idle at arrivals; use the cell-phone lot or commercial pick-up zones.
No direct rail from IAH. The METRO bus 102 (IAH Express) runs to downtown Houston's transit center (60–90 min, $1.25). Taxis to downtown Houston cost $50–70. Ride-hails pick up at the designated Rideshare zones outside baggage claim on the lower level.IAH has five terminals (A–E) connected by an underground tunnel with trams. Terminal D handles international arrivals. Rental car agencies are in a consolidated facility adjacent to Terminal C; a free IAH Connector bus runs between terminals and the rental car center. The Galleria / Uptown area costs $35–50 by ride-hail.
Humid subtropical climate. Hot, humid, and wet for much of the year. Summers are brutal (33–38°C) with high humidity and near-daily afternoon thunderstorms. Severe storms with hail and high winds regularly cause ground stops from April through September. Houston's flooding risk is significant. Heavy rain events, including tropical system remnants, have flooded airport roads, cutting off surface access even when the airport itself remains operational.
Winters are mild (5–18°C) with occasional ice storms. These are rare but highly disruptive when they occur. Hurricane season (June–November) requires monitoring for Gulf storms. October through March has the best flying weather.
DCA–IAH Quick Facts
Frequently Asked Questions
Flights from DCA to IAH
Ronald Reagan Washington National Airport (DCA) and George Bush Intercontinental Airport (IAH) are connected by nonstop service from American Airlines and United Airlines. With 118 weekly departures, this is a heavily served route.
DCA to IAH Flight Duration and Schedule
Nonstop flight time from DCA to IAH ranges from 3 hours 26 minutes to 4 hours 37 minutes. The route covers a distance of 1,207 miles (1,942 km). There are approximately 118 weekly flights outbound and 112 return, totaling 230 flights per week in both directions.
Connecting Options and Alternatives
87 one-stop connections are available, with the fastest taking approximately 5 hours via LEX. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Dulles (IAD), Baltimore (BWI) and Richmond (RIC).