Check security wait times on the IAH website to save time before your flight.

Round-trip from | $144 (Kiwi.com) |
|---|---|
One-way from | $62 (Trip.com) |
Popular in | November |
Cheapest in | October |
Average price | $426 |
Fly from
Fly to
Route
Depart
Return
Price
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Sun 1/18
7:20 am-11:24 am
Nonstop3h 04m
Washington, D.C. Dulles Intl
Tue 1/20
8:15 am-11:00 am
Nonstop3h 45m
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Sat 1/24
2:30 pm-9:22 pm
1 stop5h 52m
Washington, D.C. Dulles Intl
Wed 1/28
8:15 am-11:00 am
Nonstop3h 45m
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Tue 12/16
9:31 am-2:29 pm
1 stop27h 58m
Washington, D.C. Dulles Intl
Fri 12/19
2:32 pm-2:16 pm
2 stops24h 44m
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Fri 12/19
8:59 am-3:46 pm
1 stop5h 47m
Washington, D.C. Dulles Intl
Wed 1/7
6:00 am-10:31 pm
1 stop17h 31m
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Sun 12/21
6:00 am-11:38 am
1 stop28h 38m
Washington, D.C. Dulles Intl
Thu 1/8
9:59 pm-9:11 pm
2 stops24h 12m
HoustonWashington, D.C.
HOU - IAD
HOUIAD
Houston Hobby
Thu 1/22
6:00 am-4:31 pm
1 stop9h 31m
Washington, D.C. Dulles Intl
Sat 1/24
5:26 pm-10:05 am
1 stop17h 39m
HoustonWashington, D.C.
HOU - IAD
HOUIAD
Houston Hobby
Tue 1/6
5:45 am-1:59 pm
1 stop7h 14m
Washington, D.C. Dulles Intl
Tue 1/6
6:15 pm-10:33 pm
1 stop5h 18m
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Sat 1/24
5:15 am-11:49 am
1 stop5h 34m
Washington, D.C. Dulles Intl
Wed 1/28
7:30 pm-11:56 pm
1 stop5h 26m
HoustonWashington, D.C.
IAH - IAD
IAHIAD
Houston George Bush Intcntl
Sat 1/24
5:30 am-11:43 am
1 stop5h 13m
Washington, D.C. Dulles Intl
Tue 1/27
6:00 am-11:31 am
1 stop6h 31m
HoustonWashington, D.C.
HOU - IAD
HOUIAD
Houston Hobby
Fri 1/9
11:09 am-5:17 pm
1 stop5h 08m
Washington, D.C. Dulles Intl
Tue 1/13
6:15 pm-10:33 pm
1 stop5h 18m
To ensure you get the cheapest price possible for a flight from Houston to Washington, D.C. Dulles Intl Airport, you should look to book at least 67 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, January is the cheapest month in which you can book a flight from Houston to Washington, D.C. Dulles Intl Airport (average of $54). Flying from Houston to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $245). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s optimal to fly from Houston to Washington, D.C. Dulles Intl Airport at noon. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the morning.
Travelers seeking maximum savings on their Houston to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
About 13% of weekly flights between Houston and Washington, D.C. have experienced delays in the past year, with the average delay time being 91 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Monday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Delta have had the lowest number of delays on this route, with just 50% of flights being delayed.
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Comfort
Overall
Crew
Boarding
Food
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$184 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$129 | Average$233 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$233 | Average$402 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$236 | Average$411 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$312 | FlexibilityNo cancel fee | On-timeN/A |