Find cheap flights from Washington Dulles Airport to Houston

IAD - IAH

Find cheap flights from Washington Dulles Airport to Houston

Round-trip
Economy
Washington (IAD)
Houston George Bush Intcntl
Mon 9/21
Mon 9/28
Any month
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Good to know

Low season

October Best time to beat the crowds with an average 17% drop in price.

High season

August Most popular time to fly with an average 9% increase in price.

Average price of a round-trip

$336 (avg. price over the last 2 weeks)

Good deal for a round-trip

$315 or less

When to book flights from Washington Dulles Intl to Houston

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $253 or less.
  • The cheapest flight from Washington Dulles Airport to Houston was found 72 days before departure, on average.
  • Book at least 3 weeks before departure in order to get a below-average price.
  • High season is considered to be July, August and September. The cheapest month to fly is October.
  • Morning departure is around 20% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking Washington Dulles Airport to Houston flights

Which airlines have a flexible cancellation policy for flights from Washington Dulles Intl to Houston George Bush Intcntl due to COVID-19?

Are there Houston travel restrictions currently due to Coronavirus?

How long does a flight from Washington Dulles Airport to Houston take?

How many flights are there between Washington Dulles Airport and Houston?

Which airlines provide the cheapest flights from Washington Dulles Airport to Houston?

Do I need a passport to fly between Washington Dulles Airport and Houston?

Which airlines fly most frequently between Washington Dulles Airport and Houston?

What’s the cheapest day of the week to fly Washington Dulles Airport to Houston?

How does KAYAK find such low prices on flights from Washington Dulles Airport to Houston?

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Houston?

What is the Hacker Fare option on flights from Washington Dulles Airport to Houston?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Houston?

Top airlines flying Washington Dulles Intl to Houston George Bush Intcntl

Scores according to KAYAK customer reviews

7.9
Delta
Overall score based on 28,635 reviews
8.1
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews
Read more about Delta

Book cheap flights from Washington Dulles Airport to Houston

Recent round-trip flight deals

10/10
Sat
nonstop
Multiple Airlines
3h 02m
IAD - IAH
10/13
Tue
1 stop
Multiple Airlines
5h 14m
IAH - IAD
10/30
Fri
1 stop
British Airways
8h 10m
IAD - IAH
11/8
Sun
2 stops
British Airways
10h 35m
IAH - IAD
11/6
Fri
1 stop
Delta
7h 24m
IAD - IAH
11/8
Sun
1 stop
Delta
5h 15m
IAH - IAD
11/9
Mon
1 stop
Multiple Airlines
4h 51m
IAD - IAH
11/12
Thu
nonstop
Multiple Airlines
2h 50m
IAH - IAD
10/9
Fri
1 stop
Multiple Airlines
8h 10m
IAD - IAH
10/12
Mon
nonstop
Multiple Airlines
3h 05m
IAH - IAD
10/3
Sat
1 stop
British Airways
5h 09m
IAD - IAH
10/12
Mon
1 stop
British Airways
27h 25m
IAH - IAD
11/13
Fri
nonstop
Multiple Airlines
3h 04m
IAD - IAH
11/17
Tue
1 stop
Multiple Airlines
5h 00m
IAH - IAD
10/29
Thu
1 stop
Delta
8h 00m
IAD - IAH
11/1
Sun
1 stop
Delta
6h 50m
IAH - IAD
10/9
Fri
nonstop
Multiple Airlines
3h 24m
IAD - IAH
10/11
Sun
1 stop
Multiple Airlines
5h 12m
IAH - IAD
10/1
Thu
nonstop
Multiple Airlines
3h 24m
IAD - IAH
10/6
Tue
2 stops
Multiple Airlines
11h 04m
IAH - IAD
11/13
Fri
1 stop
Delta
6h 34m
IAD - IAH
11/15
Sun
1 stop
Delta
4h 10m
IAH - IAD
12/17
Thu
1 stop
Delta
5h 14m
IAD - IAH
12/22
Tue
1 stop
Delta
6h 50m
IAH - IAD
10/7
Wed
1 stop
Multiple Airlines
5h 45m
IAD - IAH
10/15
Thu
1 stop
Multiple Airlines
5h 34m
IAH - IAD
10/1
Thu
1 stop
Multiple Airlines
5h 39m
IAD - IAH
10/5
Mon
nonstop
Multiple Airlines
3h 10m
IAH - IAD
10/2
Fri
1 stop
Delta
5h 05m
IAD - IAH
10/4
Sun
1 stop
Delta
10h 36m
IAH - IAD
11/19
Thu
1 stop
Multiple Airlines
5h 02m
IAD - IAH
1/9
Sat
nonstop
Multiple Airlines
2h 50m
IAH - IAD
10/21
Wed
1 stop
Delta
9h 05m
IAD - IAH
10/26
Mon
2 stops
Delta
7h 47m
IAH - IAD
11/13
Fri
1 stop
Multiple Airlines
5h 42m
IAD - IAH
11/15
Sun
nonstop
Multiple Airlines
2h 50m
IAH - IAD
10/12
Mon
1 stop
Delta
7h 24m
IAD - IAH
10/13
Tue
1 stop
Delta
6h 45m
IAH - IAD
10/11
Sun
nonstop
Multiple Airlines
3h 02m
IAD - IAH
10/11
Sun
1 stop
Multiple Airlines
4h 49m
IAH - IAD
Show more results

Recent one-way flight deals

10/27
Tue
2 stops
British Airways
8h 41m
IAD - IAH
10/10
Sat
1 stop
Delta
5h 05m
IAD - IAH
10/30
Fri
2 stops
British Airways
9h 11m
IAD - IAH
10/30
Fri
1 stop
Delta
8h 00m
IAD - IAH
10/1
Thu
3 stops
Multiple Airlines
37h 18m
IAD - IAH
10/2
Fri
1 stop
Delta
7h 24m
IAD - IAH
9/26
Sat
1 stop
Delta
5h 15m
IAD - IAH
10/7
Wed
3 stops
Multiple Airlines
30h 42m
IAD - IAH
10/5
Mon
3 stops
Multiple Airlines
53h 10m
IAD - IAH
9/25
Fri
2 stops
Multiple Airlines
16h 49m
IAD - IAH
10/2
Fri
3 stops
Multiple Airlines
37h 18m
IAD - IAH
10/2
Fri
3 stops
Multiple Airlines
37h 18m
IAD - IAH
9/25
Fri
3 stops
Delta
25h 56m
IAD - IAH
9/30
Wed
3 stops
Multiple Airlines
37h 18m
IAD - IAH
9/27
Sun
1 stop
Delta
5h 35m
IAD - IAH
10/8
Thu
2 stops
Multiple Airlines
12h 57m
IAD - IAH
9/26
Sat
3 stops
Multiple Airlines
17h 35m
IAD - IAH
9/26
Sat
3 stops
Multiple Airlines
17h 35m
IAD - IAH
9/26
Sat
2 stops
Multiple Airlines
12h 03m
IAD - IAH
10/1
Thu
3 stops
Multiple Airlines
37h 18m
IAD - IAH
Show more results
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
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