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Cheap flights from Washington, D.C. Dulles Intl Airport to London from $363

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to London departing on 5/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:27 pm - 10:00 am
IAD
-
LGW
33h 33m
1 stop
Multiple Airlines Logo
2:00 pm - 2:12 pm
LGW
-
IAD
29h 12m
2 stops
$691Multiple Airlines
토, 5월 9 - 목, 5월 28
Multiple Airlines Logo
1:38 pm - 10:00 am
IAD
-
LGW
15h 22m
1 stop
Multiple Airlines Logo
2:00 pm - 12:53 pm
LGW
-
IAD
27h 53m
1 stop
$705Multiple Airlines
일, 7월 19 - 일, 8월 30
TAP AIR PORTUGAL Logo
5:05 pm - 9:45 am
IAD
-
LGW
11h 40m
1 stop
TAP AIR PORTUGAL Logo
10:35 am - 8:35 pm
LGW
-
IAD
15h 00m
1 stop
$706TAP AIR PORTUGAL
화, 5월 19 - 화, 5월 26
Icelandair Logo
8:30 pm - 2:40 pm
IAD
-
LGW
13h 10m
1 stop
Icelandair Logo
1:00 pm - 7:20 pm
LGW
-
IAD
11h 20m
1 stop
$707Icelandair
목, 5월 7 - 일, 5월 17
Multiple Airlines Logo
8:30 pm - 8:10 pm
IAD
-
LGW
18h 40m
2 stops
Multiple Airlines Logo
9:30 pm - 8:29 pm
LGW
-
IAD
27h 59m
2 stops
$708Multiple Airlines
월, 4월 27 - 월, 5월 11
Multiple Airlines Logo
1:38 pm - 10:00 am
IAD
-
LGW
15h 22m
1 stop
Multiple Airlines Logo
2:00 pm - 12:53 pm
LGW
-
IAD
27h 53m
1 stop
$711Multiple Airlines
월, 7월 20 - 일, 8월 30
Multiple Airlines Logo
8:30 pm - 8:10 pm
IAD
-
LGW
18h 40m
2 stops
Multiple Airlines Logo
9:20 am - 7:20 pm
LGW
-
IAD
15h 00m
2 stops
$713Multiple Airlines
월, 5월 4 - 화, 5월 12
Icelandair Logo
8:30 pm - 2:40 pm
IAD
-
LGW
13h 10m
1 stop
Icelandair Logo
1:00 pm - 7:20 pm
LGW
-
IAD
11h 20m
1 stop
$715Icelandair
월, 5월 11 - 목, 5월 14
Multiple Airlines Logo
11:20 pm - 6:00 pm
IAD
-
LGW
13h 40m
2 stops
Multiple Airlines Logo
9:30 pm - 8:29 pm
LGW
-
IAD
27h 59m
2 stops
$716Multiple Airlines
금, 5월 8 - 월, 5월 11
Multiple Airlines Logo
8:30 pm - 8:10 pm
IAD
-
LGW
18h 40m
2 stops
Multiple Airlines Logo
9:20 am - 7:20 pm
LGW
-
IAD
15h 00m
2 stops
$717Multiple Airlines
월, 5월 4 - 화, 5월 12

Icelandair flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

Our best Icelandair deals on Washington, D.C. Dulles Intl Airport to London Gatwick Airport flight tickets
Icelandair
May 7
IAD8:30 pmWashington, D.C. Dulles Intl
13h 10m
1 stop
LGW2:40 pmLondon Gatwick
May 17
LGW1:00 pmLondon Gatwick
11h 20m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
$707
Icelandair
May 11
IAD8:30 pmWashington, D.C. Dulles Intl
13h 10m
1 stop
LGW2:40 pmLondon Gatwick
May 14
LGW1:00 pmLondon Gatwick
11h 20m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
$715
Icelandair
May 4
IAD8:30 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LGW11:45 amLondon Gatwick
May 12
LGW1:00 pmLondon Gatwick
11h 20m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
$737

Turkish Airlines flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

Our best Turkish Airlines deals on Washington, D.C. Dulles Intl Airport to London Gatwick Airport flight tickets
Turkish Airlines
Apr 28
IAD1:20 pmWashington, D.C. Dulles Intl
22h 15m
1 stop
LGW4:35 pmLondon Gatwick
May 5
LGW5:35 pmLondon Gatwick
23h 00m
1 stop
IAD11:35 amWashington, D.C. Dulles Intl
$769
Turkish Airlines
Apr 27
IAD1:20 pmWashington, D.C. Dulles Intl
15h 35m
1 stop
LGW9:55 amLondon Gatwick
Jun 17
LGW10:50 amLondon Gatwick
29h 45m
1 stop
IAD11:35 amWashington, D.C. Dulles Intl
$774
Turkish Airlines
Apr 26
IAD1:20 pmWashington, D.C. Dulles Intl
15h 35m
1 stop
LGW9:55 amLondon Gatwick
May 12
LGW5:35 pmLondon Gatwick
23h 00m
1 stop
IAD11:35 amWashington, D.C. Dulles Intl
$776

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport 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, momondo users made 832,500 searches. Data last updated 4월 21, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

토 5/9

7:27 pm-10:00 am

1 stop33h 33m

London Gatwick

목 5/28

2:00 pm-2:12 pm

2 stops29h 12m

$691

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

일 7/19

1:38 pm-10:00 am

1 stop15h 22m

London Gatwick

일 8/30

2:00 pm-12:53 pm

1 stop27h 53m

$705

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

화 5/19

5:05 pm-9:45 am

1 stop11h 40m

London Gatwick

화 5/26

10:35 am-8:35 pm

1 stop15h 00m

$706
Quickest round-trip

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

목 5/7

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

일 5/17

1:00 pm-7:20 pm

1 stop11h 20m

$707

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

월 4/27

8:30 pm-8:10 pm

2 stops18h 40m

London Gatwick

월 5/11

9:30 pm-8:29 pm

2 stops27h 59m

$708

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

월 7/20

1:38 pm-10:00 am

1 stop15h 22m

London Gatwick

일 8/30

2:00 pm-12:53 pm

1 stop27h 53m

$711

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

월 5/4

8:30 pm-8:10 pm

2 stops18h 40m

London Gatwick

화 5/12

9:20 am-7:20 pm

2 stops15h 00m

$713

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

월 5/11

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

목 5/14

1:00 pm-7:20 pm

1 stop11h 20m

$715

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

금 5/8

11:20 pm-6:00 pm

2 stops13h 40m

London Gatwick

월 5/11

9:30 pm-8:29 pm

2 stops27h 59m

$716

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

월 5/4

8:30 pm-8:10 pm

2 stops18h 40m

London Gatwick

화 5/12

9:20 am-7:20 pm

2 stops15h 00m

$717

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and London Gatwick Airport?

What is the cheapest month to fly to London Gatwick Airport?

In general, February is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to London Gatwick Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $426. If you are unable to visit London Gatwick Airport during the month of February, then departing from Washington, D.C. Dulles Intl Airport during the month November is also very affordable. Most momondo users find prices during this month for around $447.

When to book flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to London Gatwick Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to London Gatwick Airport (IAD to LGW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

Fastest flight time

10h 10m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to London Gatwick Airport takes 10h 10m
There are no direct flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to London Gatwick Airport.
Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

  • How far is Washington, D.C. Dulles Intl to London Gatwick by plane?

    The straight-line distance from Washington, D.C. Dulles Intl to London Gatwick is 3682.8 mi. By plane, this route typically takes 10h 10m.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to London Gatwick Airport.

  • What documentation or ID do you need to fly to London Gatwick Airport?

    The travel and health documents you'll need for your trip to London Gatwick Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Gatwick Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Best airlines flying from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to London Gatwick Airport with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom $309Free CancellationRating
7.1
2,215 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom $505Free CancellationRating
7.0
639 reviews
Search Icelandair flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Crawley
Slough
Wembley
Stansted
Watford
Croydon
Brentwood
Dartford
Cobham
Folkestone
Guildford
Romford
Harrow
Uxbridge

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Can I find flights from Washington, D.C. to London with flexible booking policies on momondo?

All flight searches from Washington, D.C. to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to London.

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Yes. momondo can track prices for Washington, D.C. to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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