Nonstop flights from Houston to Washington
4 airlines fly from 2 Houston airports (IAH and HOU) to 3 Washington airports (DCA, BWI and IAD), with up to 27 flights a day.
Routes
5 airport pairs- IAH to DCAGeorge Bush Intercontinental to Ronald Reagan Washington National6 to 10 a day
- IAH to IADGeorge Bush Intercontinental to Dulles4 to 6 a day
- HOU to BWIWilliam P. Hobby to Baltimore/Washington International Thurgood Marshall4 to 5 a day
- IAH to BWIGeorge Bush Intercontinental to Baltimore/Washington International Thurgood Marshall3 a day
- HOU to DCAWilliam P. Hobby to Ronald Reagan Washington National2 to 3 a day
When they leave
Houston time12 in the morning, 5:25 AM to 11:55 AM, then 14 in the afternoon, 12:10 PM to 4:55 PM, then 11 in the evening, 5:45 PM to 8:35 PM.
Every flight
Earliest first
Schedules last checked Sep 21, 2026. Times are local.
Flying from Houston to Washington
United Airlines flies most often, 12 to 15 times a day on the Boeing 737, Boeing 737 MAX 8, Boeing 737 MAX 9, Boeing 737-800, Airbus A319 and Embraer 175. Southwest Airlines flies 7 to 8 times a day on the Boeing 737 MAX 8, Boeing 737-700 and Boeing 737. American Airlines flies 1 to 3 times a day on the CRJ 700. Frontier Airlines flies daily on the Airbus A321neo.
Flights run every day of the week, from 21 on Saturdays to 27 on Thursdays and Fridays. The first arrival in Washington is at 9:30 AM and the last at 12:40 AM the next day.
IAH to DCA is the busiest airport pair, with 65 flights a week, then IAH to IAD with 37, HOU to BWI with 34, IAH to BWI with 21 and HOU to DCA with 20.
Flying back, Washington to Houston has 175 nonstop flights a week.
Return flights
Find the cheapest day to fly from Houston to Washington.
Schedules as of Oct 9, 2026.