Dulles Intl

$147+ Cheap flights from Galveston, TX to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — IAD
Aug 25 — Sep 11
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Cheapflights Tip: The best prices from Galveston to Washington, D.C. Dulles Intl are usually found in June or August, booked 67 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Galveston to Dulles Intl

Keep the following information in mind while searching for Galveston to Dulles Intl flight deals. Data was last updated August 20, 2025.

Round-trip from

$278
(American Airlines)

One-way from

$147
(American Airlines)

Popular in

November

Cheapest in

June

Average price

$313
From Galveston to Washington, D.C. Dulles Intl
One-way flight from Galveston to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 12% potential increase in price ($48 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Average for round-trip flights in August 2025

Find flight deals from Galveston to Dulles Intl

Cheapest flights from Galveston to Dulles Intl
Explore the most affordable flight options available from Galveston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1710:15 amHOU - IAD
1 stop10h 59mAmerican Airlines
Wed 12/316:31 amIAD - HOU
1 stop14h 32mAmerican Airlines
Deal found 8/18$278
This American Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/110:15 amHOU - IAD
1 stop11h 33mAmerican Airlines
Sat 10/411:47 amIAD - HOU
1 stop9h 24mAmerican Airlines
Deal found 8/19$293
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/99:04 amHOU - IAD
1 stop12h 41mAmerican Airlines
Thu 9/116:25 amIAD - HOU
1 stop12h 27mAmerican Airlines
Deal found 8/18$303
This American Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:00 amHOU - IAD
1 stop9h 50mAmerican Airlines
Mon 9/155:40 pmIAD - HOU
1 stop15h 54mAmerican Airlines
Deal found 8/19$313
This Southwest deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:10 amHOU - IAD
1 stop6h 30mSouthwest
Tue 9/235:45 amIAD - HOU
1 stop7h 35mSouthwest
Deal found 8/17$317
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/148:32 pmHOU - IAD
1 stop13h 25mAmerican Airlines
Tue 9/1611:47 amIAD - HOU
1 stop9h 24mAmerican Airlines
Deal found 8/18$320
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:09 amHOU - IAD
1 stop11h 43mAmerican Airlines
Sat 10/46:25 amIAD - HOU
1 stop12h 45mAmerican Airlines
Deal found 8/18$323
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1010:15 amHOU - IAD
1 stop11h 33mAmerican Airlines
Sun 9/146:25 amIAD - HOU
1 stop8h 36mAmerican Airlines
Deal found 8/18$326
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:00 amHOU - IAD
1 stop6h 53mDelta
Tue 9/305:55 pmIAD - HOU
1 stop5h 42mDelta
Deal found 8/18$330
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/186:00 amHOU - IAD
1 stop4h 31mDelta
Sat 10/185:52 pmIAD - HOU
1 stop6h 08mDelta
Deal found 8/18$343
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:03 amHOU - IAD
1 stop6h 01mAmerican Airlines
Fri 10/3111:41 amIAD - HOU
1 stop5h 30mAmerican Airlines
Deal found 8/18$345

Cheapflights Fare Finder

 
Customize your flight search to find flights from Galveston to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Galveston to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Galveston

Fly to

Dulles Intl

Route

Depart

Return

Price

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 10/1

10:15 am-10:48 pm

1 stop11h 33m

Washington, D.C. Dulles Intl

Sat 10/4

11:47 am-8:11 pm

1 stop9h 24m

$293

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Mon 11/3

10:11 am-10:33 pm

1 stop11h 22m

Washington, D.C. Dulles Intl

Wed 11/5

6:04 am-5:54 pm

1 stop12h 50m

$293

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 10/2

10:09 am-10:52 pm

1 stop11h 43m

Washington, D.C. Dulles Intl

Sat 10/4

6:25 am-3:55 pm

1 stop10h 30m

$303

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 9/25

6:00 am-4:50 pm

1 stop9h 50m

Washington, D.C. Dulles Intl

Sat 9/27

11:47 am-8:11 pm

1 stop9h 24m

$303

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 9/9

9:04 am-10:45 pm

1 stop12h 41m

Washington, D.C. Dulles Intl

Thu 9/11

6:25 am-5:52 pm

1 stop12h 27m

$303

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 9/10

6:00 am-4:50 pm

1 stop9h 50m

Washington, D.C. Dulles Intl

Sat 9/13

6:25 am-3:55 pm

1 stop10h 30m

$303

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Thu 9/11

6:00 am-4:50 pm

1 stop9h 50m

Washington, D.C. Dulles Intl

Mon 9/15

5:40 pm-8:34 am

1 stop15h 54m

$313

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 9/16

6:10 am-1:40 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Tue 9/23

5:45 am-12:20 pm

1 stop7h 35m

$317

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Tue 9/16

4:26 pm-10:45 pm

1 stop5h 19m

Washington, D.C. Dulles Intl

Tue 9/23

11:47 am-3:55 pm

1 stop5h 08m

$317

HoustonWashington, D.C.

HOU - IAD

HOUIAD

Houston Hobby

Wed 9/10

6:00 am-4:50 pm

1 stop9h 50m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 18 results
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Best time to book a flight from Galveston to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Galveston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Galveston to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Galveston to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Galveston to Dulles Intl. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Galveston 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.

What is the cheapest month to book a flight from Galveston to Washington, D.C. Dulles Intl Airport?

Currently, July is the cheapest month in which you can book a flight from Galveston to Washington, D.C. Dulles Intl Airport (average of $303). Flying from Galveston to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

What is the cheapest time of day to fly from G4L to IAD?

Find hourly flight availability from Galveston to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Galveston to Washington, D.C. Dulles Intl Airport as you normally would.

What is the cheapest day to fly from Galveston to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Galveston to Dulles Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Galveston to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Galveston to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated August 20, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Spirit Airlines from Galveston to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Mignon,Nov 2024

IAH - LGA

Good boarding process. (Nice to be able to buy Group 2 boarding option.) Plane was clean. Tried to avoid full flight by flying on Saturday, but plane was full anyway. Gate area in Houston should have charging options. Should be a lounge for people with American Express Platinum Card in Houston Airport.

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Mignon,Nov 2024

IAH - LGA

Good boarding process. (Nice to be able to buy Group 2 boarding option.) Plane was clean. Tried to avoid full flight by flying on Saturday, but plane was full anyway. Gate area in Houston should have charging options. Should be a lounge for people with American Express Platinum Card in Houston Airport.

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Mignon,Nov 2024

IAH - LGA

Good boarding process. (Nice to be able to buy Group 2 boarding option.) Plane was clean. Tried to avoid full flight by flying on Saturday, but plane was full anyway. Gate area in Houston should have charging options. Should be a lounge for people with American Express Platinum Card in Houston Airport.

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Mignon,Nov 2024

IAH - LGA

Good boarding process. (Nice to be able to buy Group 2 boarding option.) Plane was clean. Tried to avoid full flight by flying on Saturday, but plane was full anyway. Gate area in Houston should have charging options. Should be a lounge for people with American Express Platinum Card in Houston Airport.

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Mignon,Nov 2024

IAH - LGA

Good boarding process. (Nice to be able to buy Group 2 boarding option.) Plane was clean. Tried to avoid full flight by flying on Saturday, but plane was full anyway. Gate area in Houston should have charging options. Should be a lounge for people with American Express Platinum Card in Houston Airport.

Related info for your journey

Find useful and relevant information for your journey from Galveston to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How long is the flight from Galveston to Washington, D.C. Dulles Intl Airport?

    For as low as $293, American Airlines can have you in Washington, D.C. Dulles Intl Airport from Galveston in 11h 33m. The distance from Galveston to Washington, D.C. Dulles Intl Airport is about 1199 mi.

  • Can I find deals for flights from Galveston to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Galveston to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Galveston to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Galveston to Dulles Intl.

  • Can I find deals for business class flights from Galveston to Dulles Intl?

    Yes. Cheapflights offers flight deals from Galveston to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Galveston to Washington, D.C. Dulles Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from Galveston to Washington, D.C. Dulles Intl Airport (average of $303). Flying from Galveston to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

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Alternative routes for Galveston to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Galveston to Dulles Intl

Discover the top 5 airlines that operate flights from Galveston to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$54Average$235FlexibilityNo cancel feeOn-time65%
FrontierCheapest$180Average$276FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$234Average$328FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$235Average$386FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$343FlexibilityNo cancel feeOn-timeN/A

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