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

Travelers seeking maximum savings on their London Gatwick Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Sunday 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.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, February can be a great choice for travel to Washington, D.C. Dulles Intl Airport. Flights to Washington, D.C. Dulles Intl Airport from London Gatwick Airport in February are about $733 on average during February, but can be found for as low as $305.

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

Unlike in the morning, when flights are generally more expensive, you can save up to 9% on flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport by exploring options for tickets at noon.

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.

$537+ Cheap Flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

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

Airfare is below average for this route at the moment. London Gatwick Airport to Washington, D.C. Dulles Intl Airport flights typically cost between $818 and $899 in September. The cheapest round-trip price found within the last 3 days was $587 on Multiple Airlines (Sep 3-Oct 30).

Q: How far in advance should I book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Users have found that booking a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport at least 51 days early can save you up to 44% on average compared to booking a flight this week. If booking 51 days before your flight isn’t an option for you, users have found flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport for as little as $729 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,123 for flights departing within the next 3 days.

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Cheap flight deals from Gatwick to Dulles Intl

Round-trip from	$587 (Kiwi.com)
One-way from	$537 (Kiwi.com)
Popular in	July
Cheapest in	February
Average price	$970

From London Gatwick to Washington, D.C. Dulles Intl

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One-way flight from London Gatwick to Washington, D.C. Dulles Intl

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Highest demand for flights based on searches. 23% potential increase in price ($226 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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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 August 21, 2025.

Wed 9/32:00 pmLGW - IAD

1 stop33h 24mMultiple Airlines

Thu 10/306:30 pmIAD - LGW

1 stop11h 20mMultiple Airlines

Deal found 8/19

$587

Thu 8/2810:00 amLGW - IAD

1 stop14h 24mMultiple Airlines

Fri 9/193:15 pmIAD - LGW

1 stop34h 45mMultiple Airlines

Deal found 8/20

$588

Tue 9/29:45 pmLGW - IAD

2 stops46h 35mMultiple Airlines

Sat 9/277:14 pmIAD - LGW

1 stop33h 56mMultiple Airlines

Deal found 8/20

$589

Wed 8/273:35 pmLGW - IAD

1 stop11h 35mIcelandair

Wed 9/38:30 pmIAD - LGW

1 stop10h 15mIcelandair

Deal found 8/20

$591

Thu 9/42:00 pmLGW - IAD

1 stop33h 19mMultiple Airlines

Sun 9/213:15 pmIAD - LGW

1 stop34h 40mMultiple Airlines

Deal found 8/21

$592

Wed 10/83:40 pmLGW - IAD

1 stop11h 30mIcelandair

Mon 10/138:30 pmIAD - LGW

1 stop13h 05mIcelandair

Deal found 8/19

$593

Tue 9/238:45 pmLGW - IAD

2 stops27h 45mMultiple Airlines

Tue 9/309:00 pmIAD - LGW

1 stop18h 15mMultiple Airlines

Deal found 8/19

$595

Thu 9/42:50 pmLGW - IAD

2 stops34h 09mMultiple Airlines

Thu 9/1110:05 pmIAD - LGW

2 stops18h 20mMultiple Airlines

Deal found 8/20

$597

Mon 10/63:40 pmLGW - IAD

1 stop32h 40mIcelandair

Mon 10/138:30 pmIAD - LGW

1 stop13h 05mIcelandair

Deal found 8/20

$599

Wed 10/15:25 pmLGW - IAD

2 stops32h 25mMultiple Airlines

Sat 10/45:00 pmIAD - LGW

1 stop11h 45mMultiple Airlines

Deal found 8/20

$600

Sun 10/58:55 amLGW - IAD

2 stops15h 25mMultiple Airlines

Sun 10/128:30 pmIAD - LGW

2 stops19h 25mMultiple Airlines

Deal found 8/21

$601

Fri 10/33:40 pmLGW - IAD

1 stop11h 30mIcelandair

Mon 10/138:30 pmIAD - LGW

1 stop13h 05mIcelandair

Deal found 8/20

$602

Best flights from Gatwick to Dulles Intl
Discover carefully curated flight deals from Gatwick to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2025.

Wed 9/32:00 pmLGW - IAD

1 stop33h 24mMultiple Airlines

Sun 11/210:30 pmIAD - LGW

1 stop12h 15mMultiple Airlines

Deal found 8/19

$587

Mon 9/224:25 pmLGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Mon 9/2910:20 pmIAD - LGW

1 stop30h 25mTAP AIR PORTUGAL

Deal found 8/20

$587

Wed 10/83:40 pmLGW - IAD

1 stop11h 30mIcelandair

Mon 10/138:30 pmIAD - LGW

1 stop13h 05mIcelandair

Deal found 8/20

$592

Wed 9/32:00 pmLGW - IAD

1 stop33h 24mMultiple Airlines

Tue 10/286:30 pmIAD - LGW

1 stop11h 20mMultiple Airlines

Deal found 8/19

$587

Wed 9/32:00 pmLGW - IAD

1 stop33h 24mMultiple Airlines

Thu 10/306:30 pmIAD - LGW

1 stop11h 20mMultiple Airlines

Deal found 8/19

$587

Wed 9/32:00 pmLGW - IAD

1 stop33h 24mMultiple Airlines

Mon 11/35:30 pmIAD - LGW

1 stop11h 20mMultiple Airlines

Deal found 8/19

$588

Tue 9/29:45 pmLGW - IAD

2 stops46h 35mMultiple Airlines

Sat 9/277:14 pmIAD - LGW

1 stop33h 56mMultiple Airlines

Deal found 8/20

$589

Fri 9/268:55 amLGW - IAD

2 stops15h 25mMultiple Airlines

Sun 9/2811:15 pmIAD - LGW

2 stops16h 40mMultiple Airlines

Deal found 8/19

$591

Thu 9/42:00 pmLGW - IAD

1 stop33h 19mMultiple Airlines

Sun 9/213:15 pmIAD - LGW

1 stop34h 40mMultiple Airlines

Deal found 8/21

$592

Tue 9/238:45 pmLGW - IAD

2 stops27h 45mMultiple Airlines

Tue 9/309:00 pmIAD - LGW

1 stop18h 15mMultiple Airlines

Deal found 8/19

$595

Sat 10/118:00 pmLGW - IAD

2 stops28h 59mMultiple Airlines

Sat 10/1810:05 pmIAD - LGW

2 stops19h 35mMultiple Airlines

Deal found 8/19

$595

Last-minute flights from Gatwick to Dulles Intl
Discover last-minute flight deals from Gatwick to Dulles Intl. Data last updated August 21, 2025 and is based on user searches.

Tue 8/263:40 pmLGW - IAD

1 stop11h 30mIcelandair

Thu 10/168:30 pmIAD - LGW

1 stop13h 10mIcelandair

Deal found 8/21

$607

Tue 8/261:00 pmLGW - IAD

1 stop11h 20mIcelandair

Wed 9/38:30 pmIAD - LGW

1 stop10h 15mIcelandair

Deal found 8/19

$608

Wed 8/273:35 pmLGW - IAD

1 stop11h 35mIcelandair

Wed 9/38:30 pmIAD - LGW

1 stop10h 15mIcelandair

Deal found 8/20

$591

Thu 8/2810:00 amLGW - IAD

1 stop14h 24mMultiple Airlines

Fri 9/193:15 pmIAD - LGW

1 stop34h 45mMultiple Airlines

Deal found 8/20

$588

Sat 8/301:00 pmLGW - IAD

1 stop14h 10mIcelandair

Tue 9/211:15 pmIAD - LGW

1 stop31h 30mIcelandair

Deal found 8/20

$609

Tue 9/29:45 pmLGW - IAD

2 stops46h 35mMultiple Airlines

Sat 9/277:14 pmIAD - LGW

1 stop33h 56mMultiple Airlines

Deal found 8/20

$589

Wed 9/32:00 pmLGW - IAD

1 stop33h 24mMultiple Airlines

Thu 10/306:30 pmIAD - LGW

1 stop11h 20mMultiple Airlines

Deal found 8/19

$587

Thu 9/42:00 pmLGW - IAD

1 stop33h 19mMultiple Airlines

Sun 9/213:15 pmIAD - LGW

1 stop34h 40mMultiple Airlines

Deal found 8/21

$592

Thu 9/42:50 pmLGW - IAD

2 stops34h 09mMultiple Airlines

Thu 9/1110:05 pmIAD - LGW

2 stops18h 20mMultiple Airlines

Deal found 8/20

$597

Wed 9/103:35 pmLGW - IAD

1 stop11h 35mIcelandair

Wed 10/298:40 pmIAD - LGW

1 stop10h 15mIcelandair

Deal found 8/19

$611

Wed 9/179:05 pmLGW - IAD

2 stops23h 15mMultiple Airlines

Mon 9/2210:20 pmIAD - LGW

1 stop12h 15mMultiple Airlines

Deal found 8/19

$603

Tue 9/238:45 pmLGW - IAD

2 stops27h 45mMultiple Airlines

Tue 9/309:00 pmIAD - LGW

1 stop18h 15mMultiple Airlines

Deal found 8/19

$595

One-way flights from Gatwick to Dulles Intl
Search for one-way flight options from Gatwick to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 21, 2025.

Sun 8/312:00 pmLGW - IAD

2 stops30h 23mMultiple Airlines

Deal found 8/21

$537

Tue 9/307:25 amLGW - IAD

3 stops18h 25mMultiple Airlines

Deal found 8/18

$539

Mon 2/92:00 pmLGW - IAD

3 stops31h 13mMultiple Airlines

Deal found 8/19

$540

Sat 11/84:35 pmLGW - IAD

1 stop33h 25mTAP AIR PORTUGAL

Deal found 8/20

$541

Fri 9/129:50 amLGW - IAD

3 stops34h 30mMultiple Airlines

Deal found 8/20

$542

Sat 10/118:40 pmLGW - IAD

2 stops23h 40mMultiple Airlines

Deal found 8/21

$544

Wed 8/276:00 amLGW - IAD

3 stops19h 50mMultiple Airlines

Deal found 8/19

$545

Sun 12/148:30 amLGW - IAD

2 stops35h 45mMultiple Airlines

Deal found 8/19

$546

Fri 10/38:45 pmLGW - IAD

2 stops23h 35mMultiple Airlines

Deal found 8/21

$549

Sun 9/219:45 pmLGW - IAD

2 stops22h 35mMultiple Airlines

Deal found 8/19

$550

Tue 9/21:00 pmLGW - IAD

1 stop14h 10mIcelandair

Deal found 8/20

$552

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 9/3

2:00 pm-6:24 pm

1 stop33h 24m

Washington, D.C. Dulles Intl

Sun 11/2

10:30 pm-3:45 pm

1 stop12h 15m

$587

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 9/22

4:25 pm-3:20 pm

1 stop27h 55m

Washington, D.C. Dulles Intl

Mon 9/29

10:20 pm-9:45 am

1 stop30h 25m

$587

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 9/3

2:00 pm-6:24 pm

1 stop33h 24m

Washington, D.C. Dulles Intl

Tue 10/28

6:30 pm-9:50 am

1 stop11h 20m

$587

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 9/3

2:00 pm-6:24 pm

1 stop33h 24m

Washington, D.C. Dulles Intl

Thu 10/30

6:30 pm-9:50 am

1 stop11h 20m

$587

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 9/3

2:00 pm-6:24 pm

1 stop33h 24m

Washington, D.C. Dulles Intl

Mon 11/3

5:30 pm-9:50 am

1 stop11h 20m

$588

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 9/2

9:45 pm-3:20 pm

2 stops46h 35m

Washington, D.C. Dulles Intl

Sat 9/27

7:14 pm-10:10 am

1 stop33h 56m

$589

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 9/26

8:55 am-7:20 pm

2 stops15h 25m

Washington, D.C. Dulles Intl

Sun 9/28

11:15 pm-8:55 pm

2 stops16h 40m

$591

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 10/8

3:40 pm-10:10 pm

1 stop11h 30m

Washington, D.C. Dulles Intl

Mon 10/13

8:30 pm-2:35 pm

1 stop13h 05m

$592

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 9/4

2:00 pm-6:19 pm

1 stop33h 19m

Washington, D.C. Dulles Intl

Sun 9/21

3:15 pm-6:55 am

1 stop34h 40m

$592

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 9/23

8:45 pm-7:30 pm

2 stops27h 45m

Washington, D.C. Dulles Intl

Tue 9/30

9:00 pm-8:15 pm

1 stop18h 15m

$595

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/21

Showing 1-10 of 23 results

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

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

To ensure you get the cheapest price possible for a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 54 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 London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Currently, July is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of $303). 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?

Related info for your journey

How long is the flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
There are many flights that can get you from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in 27h 55m. Fly via TAP AIR PORTUGAL to get the fastest option. Airlines will cover a distance of 3683 mi.
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, July is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of $303). 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.

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$537+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Gatwick to Dulles Intl with Cheapflights

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Find flight deals from Gatwick to Dulles Intl

Cheapest flights from Gatwick to Dulles IntlExplore 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 August 21, 2025.

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 August 21, 2025.

Cheapflights Fare Finder

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.

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.

Cheapflights Insights

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

How far ahead should I book a 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?

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

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.

How long is the flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

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

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

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

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

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

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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 August 21, 2025.