Dulles Intl

$536+ Cheap flights from Gatwick (LGW) 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
Jul 28 — Aug 41
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Gatwick to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Gatwick to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 23, 2025.

Round-trip from

$608
(Kiwi.com)

One-way from

$536
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,044
From London Gatwick to Washington, D.C. Dulles Intl
One-way flight from London Gatwick to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 23% potential increase in price ($224 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Average for round-trip flights in July 2025

Find flight deals from Gatwick to Dulles Intl

Cheapest flights from Gatwick to Dulles Intl
Explore the most affordable flight options available from Gatwick to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3110:00 amLGW - IAD
1 stop14h 24mMultiple Airlines
Tue 9/95:20 pmIAD - LGW
1 stop11h 00mMultiple Airlines
Deal found 7/23$608
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/316:40 pmLGW - IAD
1 stop26h 35mSWISS
Tue 9/98:45 pmIAD - LGW
1 stop16h 05mSWISS
Deal found 7/21$614
This Gotogate deal was found by Cheapflights users on 7/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1610:35 amLGW - IAD
1 stop15h 15mTAP AIR PORTUGAL
Tue 9/235:00 pmIAD - LGW
2 stops13h 20mTAP AIR PORTUGAL
Deal found 7/21$615
This Booking.com deal was found by Cheapflights users on 7/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/83:40 pmLGW - IAD
1 stop32h 40mIcelandair
Wed 9/1711:15 pmIAD - LGW
1 stop10h 25mIcelandair
Deal found 7/21$621
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 11/312:30 pmLGW - IAD
2 stops30h 05mAmerican Airlines
Sun 11/169:12 amIAD - LGW
2 stops17h 18mAmerican Airlines
Deal found 7/22$625

Cheapflights Fare Finder

 
Customize your flight search to find flights from Gatwick 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 July 23, 2025.
Use the filters below to find and compare flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Gatwick

Fly to

Dulles Intl

Route

Depart

Return

Price

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 8/31

10:00 am-7:24 pm

1 stop14h 24m

Washington, D.C. Dulles Intl

Tue 9/9

5:20 pm-9:20 am

1 stop11h 00m

$608

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 8/31

6:40 pm-4:15 pm

1 stop26h 35m

Washington, D.C. Dulles Intl

Tue 9/9

8:45 pm-5:50 pm

1 stop16h 05m

$614

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 9/16

10:35 am-8:50 pm

1 stop15h 15m

Washington, D.C. Dulles Intl

Tue 9/23

5:00 pm-11:20 am

2 stops13h 20m

$615

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 9/8

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Wed 9/17

11:15 pm-2:40 pm

1 stop10h 25m

$621

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 11/3

12:30 pm-1:35 pm

2 stops30h 05m

Washington, D.C. Dulles Intl

Sun 11/16

9:12 am-7:30 am

2 stops17h 18m

$625

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 9/19

1:50 pm-3:06 pm

3 stops30h 16m

$536

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 8/14

3:40 pm-10:10 pm

1 stop11h 30m

$553

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 10/13

4:25 pm-8:50 pm

1 stop33h 25m

$578

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/21

Best time to book a flight from Gatwick to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Gatwick 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 London Gatwick Airport to Washington, D.C. Dulles Intl Airport

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

Currently, August is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from London Gatwick Airport 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.

How much does it cost to fly round-trip from London Gatwick Airport 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 July 23, 2025.
Get a feel of what it's like to fly with SWISS, American Airlines, and TAP AIR PORTUGAL from London Gatwick Airport to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.4

Boarding

7.7

Overall

7.5

Entertainment

6.8

Food

7.1

Crew

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Aug 2024

BLQ - ZRH

We had to wait more than an hour at check in because they said I requested an upgrade to business class (which I didn’t) and weren’t able to cancel it. They finally assigned us regular seats but I got stopped again at the gate because of the same issue. We barely made it on time. Poor management on the connecting flight (a 10 hour flight) where they let two young mothers sit together near us (they were sitting in separate areas when we boarded), who were talking endlessly, both with screaming babies, and no help from the crew to make them aware of other people around them.

Comfort

7.4

Boarding

7.7

Overall

7.5

Entertainment

6.8

Food

7.1

Crew

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Aug 2024

BLQ - ZRH

We had to wait more than an hour at check in because they said I requested an upgrade to business class (which I didn’t) and weren’t able to cancel it. They finally assigned us regular seats but I got stopped again at the gate because of the same issue. We barely made it on time. Poor management on the connecting flight (a 10 hour flight) where they let two young mothers sit together near us (they were sitting in separate areas when we boarded), who were talking endlessly, both with screaming babies, and no help from the crew to make them aware of other people around them.

Comfort

7.4

Boarding

7.7

Overall

7.5

Entertainment

6.8

Food

7.1

Crew

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Aug 2024

BLQ - ZRH

We had to wait more than an hour at check in because they said I requested an upgrade to business class (which I didn’t) and weren’t able to cancel it. They finally assigned us regular seats but I got stopped again at the gate because of the same issue. We barely made it on time. Poor management on the connecting flight (a 10 hour flight) where they let two young mothers sit together near us (they were sitting in separate areas when we boarded), who were talking endlessly, both with screaming babies, and no help from the crew to make them aware of other people around them.

Comfort

7.4

Boarding

7.7

Overall

7.5

Entertainment

6.8

Food

7.1

Crew

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Aug 2024

BLQ - ZRH

We had to wait more than an hour at check in because they said I requested an upgrade to business class (which I didn’t) and weren’t able to cancel it. They finally assigned us regular seats but I got stopped again at the gate because of the same issue. We barely made it on time. Poor management on the connecting flight (a 10 hour flight) where they let two young mothers sit together near us (they were sitting in separate areas when we boarded), who were talking endlessly, both with screaming babies, and no help from the crew to make them aware of other people around them.

Comfort

7.4

Boarding

7.7

Overall

7.5

Entertainment

6.8

Food

7.1

Crew

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Aug 2024

BLQ - ZRH

We had to wait more than an hour at check in because they said I requested an upgrade to business class (which I didn’t) and weren’t able to cancel it. They finally assigned us regular seats but I got stopped again at the gate because of the same issue. We barely made it on time. Poor management on the connecting flight (a 10 hour flight) where they let two young mothers sit together near us (they were sitting in separate areas when we boarded), who were talking endlessly, both with screaming babies, and no help from the crew to make them aware of other people around them.

Related info for your journey

Find useful and relevant information for your journey from Gatwick to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport round-trip?

    Currently priced at $614, SWISS will fly you from London Gatwick Airport to Washington, D.C. Dulles Intl Airport and back. In addition to SWISS, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from TAP AIR PORTUGAL and Icelandair - these airlines can fly you to your destination from $615 and $621, respectively. You may be able to fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport for 16% less than the average price by searching for these airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Gatwick 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 London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from London Gatwick Airport 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
Fredericksburg
Gaithersburg
Easton
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
Springfield
National Harbor
Dundalk

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.