Nonstop flights from Washington to Houston
4 airlines fly from 3 Washington airports (DCA, BWI and IAD) to 2 Houston airports (IAH and HOU), with up to 27 flights a day.
Routes
5 airport pairs- DCA to IAHRonald Reagan Washington National to George Bush Intercontinental6 to 10 a day
- IAD to IAHDulles to George Bush Intercontinental5 to 6 a day
- BWI to HOUBaltimore/Washington International Thurgood Marshall to William P. Hobby4 to 5 a day
- BWI to IAHBaltimore/Washington International Thurgood Marshall to George Bush Intercontinental3 to 4 a day
- DCA to HOURonald Reagan Washington National to William P. Hobby2 to 3 a day
When they leave
Washington time13 in the morning, 6:00 AM to 11:00 AM, then 14 in the afternoon, 12:20 PM to 4:44 PM, then 10 in the evening, 5:40 PM to 10:20 PM.
Every flight
Earliest first
Schedules last checked Sep 21, 2026. Times are local.
Flying from Washington to Houston
United Airlines flies most often, 13 to 15 times a day on the Boeing 737, Boeing 737 MAX 9, Airbus A319, Boeing 737 MAX 8, Boeing 737-800 and Embraer 175. Southwest Airlines flies 6 to 8 times a day on the Boeing 737 MAX 8, Boeing 737 and Boeing 737-700. 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 Mondays. The first arrival in Houston is at 8:10 AM and the last at 12:45 AM the next day.
DCA to IAH is the busiest airport pair, with 65 flights a week, then IAD to IAH with 36, BWI to HOU with 30, BWI to IAH with 24 and DCA to HOU with 20.
Flying back, Houston to Washington has 177 nonstop flights a week.
Return flights
Find the cheapest day to fly from Washington to Houston.
Schedules as of Oct 9, 2026.