
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $153 (Kiwi.com) |
One-way from | $76 (Trip.com) |
Popular in | March |
Cheapest in | September |
Average price | $433 |
Good round-trip deal | $392 or less |
Good one-way deal | $178 or less |
Fly from
Fly to
Route
Depart
Return
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
Sat 4/4
5:37 pm-8:10 pm
Nonstop3h 33m
Houston George Bush Intcntl
Mon 4/6
7:50 pm-11:59 pm
Nonstop3h 09m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
Sat 3/21
6:00 am-8:36 am
Nonstop3h 36m
Houston George Bush Intcntl
Tue 3/24
6:35 pm-10:36 pm
Nonstop3h 01m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
Fri 5/1
6:00 am-11:14 am
1 stop6h 14m
Houston George Bush Intcntl
Mon 5/4
6:46 pm-12:42 am
1 stop4h 56m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
Wed 4/29
5:07 pm-10:54 pm
1 stop6h 47m
Houston George Bush Intcntl
Sun 5/3
5:24 am-11:42 am
1 stop5h 18m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
Sat 3/28
10:05 pm-12:30 am
Nonstop3h 25m
Houston George Bush Intcntl
Thu 4/2
7:50 pm-11:59 pm
Nonstop3h 09m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
Sat 3/28
10:05 pm-12:30 am
Nonstop3h 25m
Houston George Bush Intcntl
Wed 4/1
7:25 am-11:33 am
Nonstop3h 08m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
Wed 3/11
8:30 am-11:11 am
Nonstop3h 41m
Houston George Bush Intcntl
Tue 3/17
4:40 pm-8:41 pm
Nonstop3h 01m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
Thu 3/26
10:05 pm-12:30 am
Nonstop3h 25m
Houston George Bush Intcntl
Mon 3/30
7:25 am-11:33 am
Nonstop3h 08m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
Sat 3/28
10:22 pm-8:59 am
1 stop11h 37m
Houston George Bush Intcntl
Sat 4/4
7:25 am-11:33 am
Nonstop3h 08m
Washington, D.C.Houston
IAD - IAH
IADIAH
Washington, D.C. Dulles Intl
Fri 4/10
10:11 pm-12:30 am
Nonstop3h 19m
Houston George Bush Intcntl
Mon 4/13
2:45 pm-9:25 pm
1 stop5h 40m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
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 November is currently the most expensive (average of $234). 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 20% 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 Thursday at noon 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 13% of weekly flights between Washington, D.C. and Houston have experienced delays in the past year, with the average delay time being 156 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening 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, United Airlines have had the lowest number of delays on this route, with just 13% of flights being delayed.
Crew
Comfort
Food
Entertainment
Boarding
Overall
Reviews
Dane,Jan 2026
IAD - TYS
Crew
Comfort
Food
Entertainment
Boarding
Overall
Reviews
Dane,Jan 2026
IAD - TYS
Crew
Comfort
Food
Entertainment
Boarding
Overall
Reviews
Dane,Jan 2026
IAD - TYS
Crew
Comfort
Food
Entertainment
Boarding
Overall
Reviews
Dane,Jan 2026
IAD - TYS
Crew
Comfort
Food
Entertainment
Boarding
Overall
Reviews
Dane,Jan 2026
IAD - TYS
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$63 | Average$248 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$151 | Average$190 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$236 | Average$399 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$254 | Average$403 | FlexibilityNo cancel fee | On-time69% |