Check-in at IAD can be crowded in the afternoon and evening. Arrive early to navigate the busy area efficiently.
Most accurate provider | FlightHub 3 stars |
---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $140 (Kiwi.com) |
One-way from | $78 (Mytrip) |
Popular in | February |
Cheapest in | September |
Average price | $349 |
Good round-trip deal | $376 or less |
Good one-way deal | $177 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
jue. 12/18
6:00 am-10:40 am
1 stop5h 40m
Houston George Bush Intcntl
mié. 12/31
6:00 am-12:13 pm
1 stop5h 13m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
jue. 1/29
6:00 am-11:27 am
1 stop6h 27m
Houston George Bush Intcntl
dom. 2/1
5:25 am-11:42 am
1 stop5h 17m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
mié. 12/3
6:00 am-8:29 am
Nonstop3h 29m
Houston George Bush Intcntl
lun. 12/8
4:25 pm-11:21 pm
1 stop5h 56m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
sáb. 1/17
5:45 pm-8:33 pm
Nonstop3h 48m
Houston George Bush Intcntl
dom. 1/25
8:00 am-4:25 pm
1 stop7h 25m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
sáb. 12/6
5:40 pm-8:15 pm
Nonstop3h 35m
Houston George Bush Intcntl
dom. 12/14
5:00 am-11:49 am
1 stop5h 49m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
jue. 12/18
10:15 pm-12:57 am
Nonstop3h 42m
Houston George Bush Intcntl
mié. 12/24
4:27 pm-11:06 pm
1 stop5h 39m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
jue. 12/11
6:00 am-8:28 am
Nonstop3h 28m
Houston George Bush Intcntl
dom. 12/14
6:14 pm-10:15 pm
Nonstop3h 01m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
mar. 12/2
6:00 am-10:41 am
1 stop5h 41m
Houston George Bush Intcntl
mié. 12/3
5:10 am-11:33 am
1 stop5h 23m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
sáb. 1/3
12:32 pm-6:09 pm
1 stop6h 37m
Houston George Bush Intcntl
lun. 1/5
7:15 am-1:53 pm
1 stop5h 38m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
vie. 2/13
7:50 pm-11:59 pm
1 stop5h 09m
Houston George Bush Intcntl
dom. 2/15
6:00 am-12:00 pm
1 stop5h 00m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy2 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy- | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars |
The best time to book flights from Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport is 89 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport (average of $147). Flying from Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport in January is currently the most expensive (average of $269). 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.
When flying from Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 34% versus a flight at noon.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
About 14% of weekly flights between Washington, D.C. and Houston have experienced delays in the past year, with the average delay time being 151 minutes.
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
Tuesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Air Canada have had the lowest number of delays on this route, with no flights being classified as delayed.
Comfort
Crew
Overall
Boarding
Entertainment
Food
Reviews
Tim,Sep 2025
IAD - GSP
Comfort
Crew
Overall
Boarding
Entertainment
Food
Reviews
Tim,Sep 2025
IAD - GSP
Comfort
Crew
Overall
Boarding
Entertainment
Food
Reviews
Tim,Sep 2025
IAD - GSP
Comfort
Crew
Overall
Boarding
Entertainment
Food
Reviews
Tim,Sep 2025
IAD - GSP
Comfort
Crew
Overall
Boarding
Entertainment
Food
Reviews
Tim,Sep 2025
IAD - GSP
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$91 | Average$150 | FlexibilityNo cancel fee | On-time65% | |
Cheapest$151 | Average$186 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$234 | Average$378 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$253 | Average$378 | FlexibilityNo cancel fee | On-time69% |