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Cheap flights from Washington, D.C. Dulles Intl Airport to London from £284

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 21/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:30 - 17:05
IAD
-
LGW
15h 35m
2 stops
Multiple Airlines Logo
11:05 - 19:20
LGW
-
IAD
13h 15m
2 stops
£659Multiple Airlines
Thu, 23 Jul - Thu, 30 Jul
TAP AIR PORTUGAL Logo
17:05 - 09:45
IAD
-
LGW
11h 40m
1 stop
TAP AIR PORTUGAL Logo
21:15 - 15:10
LGW
-
IAD
22h 55m
2 stops
£660TAP AIR PORTUGAL
Tue, 11 Aug - Sat, 22 Aug
Multiple Airlines Logo
23:20 - 14:40
IAD
-
LGW
10h 20m
1 stop
Multiple Airlines Logo
20:40 - 15:30
LGW
-
IAD
23h 50m
1 stop
£661Multiple Airlines
Wed, 22 Jul - Sun, 2 Aug
Multiple Airlines Logo
11:05 - 07:55
IAD
-
LGW
15h 50m
2 stops
Multiple Airlines Logo
11:35 - 16:38
LGW
-
IAD
34h 03m
2 stops
£662Multiple Airlines
Sun, 19 Jul - Mon, 27 Jul
Multiple Airlines Logo
11:05 - 09:50
IAD
-
LGW
17h 45m
2 stops
Multiple Airlines Logo
09:40 - 16:13
LGW
-
IAD
11h 33m
1 stop
£662Multiple Airlines
Mon, 20 Jul - Wed, 5 Aug
Multiple Airlines Logo
13:32 - 10:00
IAD
-
LGW
15h 28m
1 stop
Multiple Airlines Logo
14:00 - 10:16
LGW
-
IAD
25h 16m
1 stop
£663Multiple Airlines
Tue, 7 Jul - Tue, 14 Jul
Multiple Airlines Logo
23:20 - 14:40
IAD
-
LGW
10h 20m
1 stop
Multiple Airlines Logo
21:35 - 19:20
LGW
-
IAD
26h 45m
2 stops
£664Multiple Airlines
Wed, 22 Jul - Tue, 28 Jul
Multiple Airlines Logo
12:00 - 10:00
IAD
-
LGW
17h 00m
2 stops
Multiple Airlines Logo
14:00 - 12:26
LGW
-
IAD
27h 26m
1 stop
£665Multiple Airlines
Mon, 13 Jul - Fri, 31 Jul
TAP AIR PORTUGAL Logo
17:05 - 09:45
IAD
-
LGW
11h 40m
1 stop
TAP AIR PORTUGAL Logo
21:15 - 15:10
LGW
-
IAD
22h 55m
2 stops
£665TAP AIR PORTUGAL
Sat, 12 Sep - Fri, 18 Sep
TAP AIR PORTUGAL Logo
17:05 - 09:45
IAD
-
LGW
11h 40m
1 stop
TAP AIR PORTUGAL Logo
16:35 - 14:45
LGW
-
IAD
27h 10m
1 stop
£666TAP AIR PORTUGAL
Fri, 16 Oct - Mon, 30 Nov

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TAP AIR PORTUGAL flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

Our best TAP AIR PORTUGAL deals on Washington, D.C. Dulles Intl Airport to London Gatwick Airport flight tickets
TAP AIR PORTUGAL
11 Aug
IAD17:05Washington, D.C. Dulles Intl
11h 40m
1 stop
LGW09:45London Gatwick
22 Aug
LGW21:15London Gatwick
22h 55m
2 stops
IAD15:10Washington, D.C. Dulles Intl
£660
TAP AIR PORTUGAL
12 Sept
IAD17:05Washington, D.C. Dulles Intl
11h 40m
1 stop
LGW09:45London Gatwick
18 Sept
LGW21:15London Gatwick
22h 55m
2 stops
IAD15:10Washington, D.C. Dulles Intl
£665
TAP AIR PORTUGAL
16 Oct
IAD17:05Washington, D.C. Dulles Intl
11h 40m
1 stop
LGW09:45London Gatwick
4 Dec
LGW10:40London Gatwick
14h 55m
1 stop
IAD20:35Washington, D.C. Dulles Intl
£666

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
23 Jul
IAD20:30Washington, D.C. Dulles Intl
13h 10m
1 stop
LGW14:40London Gatwick
28 Jul
LGW13:00London Gatwick
11h 20m
1 stop
IAD19:20Washington, D.C. Dulles Intl
£667
Icelandair
15 Jun
IAD20:30Washington, D.C. Dulles Intl
13h 10m
1 stop
LGW14:40London Gatwick
17 Jun
LGW15:40London Gatwick
11h 35m
1 stop
IAD22:15Washington, D.C. Dulles Intl
£672
Icelandair
21 Jul
IAD20:30Washington, D.C. Dulles Intl
13h 10m
1 stop
LGW14:40London Gatwick
28 Jul
LGW15:40London Gatwick
32h 40m
1 stop
IAD19:20Washington, D.C. Dulles Intl
£676

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 10 June 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 return flight
Fastest return journey

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 23/7

20:30-17:05

2 stops15h 35m

London Gatwick

Thu 30/7

11:05-19:20

2 stops13h 15m

£659

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 11/8

17:05-09:45

1 stop11h 40m

London Gatwick

Sat 22/8

21:15-15:10

2 stops22h 55m

£660

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 22/7

23:20-14:40

1 stop10h 20m

London Gatwick

Sun 2/8

20:40-15:30

1 stop23h 50m

£661

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 19/7

11:05-07:55

2 stops15h 50m

London Gatwick

Mon 27/7

11:35-16:38

2 stops34h 03m

£662

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 20/7

11:05-09:50

2 stops17h 45m

London Gatwick

Wed 5/8

09:40-16:13

1 stop11h 33m

£662

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 7/7

13:32-10:00

1 stop15h 28m

London Gatwick

Tue 14/7

14:00-10:16

1 stop25h 16m

£663

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 22/7

23:20-14:40

1 stop10h 20m

London Gatwick

Tue 28/7

21:35-19:20

2 stops26h 45m

£664

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 13/7

12:00-10:00

2 stops17h 00m

London Gatwick

Fri 31/7

14:00-12:26

1 stop27h 26m

£665

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sat 12/9

17:05-09:45

1 stop11h 40m

London Gatwick

Fri 18/9

21:15-15:10

2 stops22h 55m

£665

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 16/10

17:05-09:45

1 stop11h 40m

London Gatwick

Mon 30/11

16:35-14:45

1 stop27h 10m

£666

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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?

The cheapest month to fly to London Gatwick Airport from Washington, D.C. Dulles Intl Airport is in February. Flight prices, which tend to average around £318, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in February, then you should wait until November to fly from Washington, D.C. Dulles Intl Airport, when ticket prices are also cheap, with an average price of £334.

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 return 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 distance between Washington, D.C. Dulles Intl and London Gatwick is about 3682.8 mi. In terms of flight time, this usually takes a little over 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 old do you have to be to fly from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 required for your trip to London Gatwick Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Gatwick Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Gatwick
Luton
Wembley
Slough
Maidstone
Southend-on-Sea
Ipswich
Ilford
Canterbury
Guildford
Hayes
Folkestone
Chelmsford
Dover
Bedford
Chichester
Harlow
Colchester

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to London for you.

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

Yes. momondo allows you to filter the results for Washington, D.C. to London flights to just show those with flexible booking policies.

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

Once all potential Washington, D.C. to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington, D.C. to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Washington, D.C. and alert you when they change.

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