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Cheap flights from Washington, D.C. Dulles Intl Airport to London from £196

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 22/10. 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 return flights

Icelandair Logo
23:15 - 14:35IAD-LGW
10h 20m1 stop
Icelandair Logo
15:40 - 19:20LGW-IAD
32h 40m1 stop
£361Icelandair
Find Deal
Sat, 4 Oct - Tue, 14 Oct
Icelandair Logo
20:30 - 14:40IAD-LGW
13h 10m1 stop
Icelandair Logo
15:40 - 22:10LGW-IAD
11h 30m1 stop
£362Icelandair
Find Deal
Wed, 1 Oct - Sat, 11 Oct
Icelandair Logo
20:30 - 14:35IAD-LGW
13h 05m1 stop
Icelandair Logo
11:55 - 18:30LGW-IAD
11h 35m1 stop
£363Icelandair
Find Deal
Mon, 13 Oct - Wed, 3 Dec
Icelandair Logo
23:15 - 14:40IAD-LGW
10h 25m1 stop
Icelandair Logo
15:40 - 19:20LGW-IAD
32h 40m1 stop
£364Icelandair
Find Deal
Wed, 1 Oct - Tue, 7 Oct
Icelandair Logo
20:30 - 14:35IAD-LGW
13h 05m1 stop
Icelandair Logo
15:40 - 19:20LGW-IAD
32h 40m1 stop
£364Icelandair
Find Deal
Mon, 13 Oct - Thu, 23 Oct
Icelandair Logo
19:40 - 10:55IAD-LGW
10h 15m1 stop
Icelandair Logo
11:55 - 18:30LGW-IAD
11h 35m1 stop
£365Icelandair
Find Deal
Mon, 26 Jan - Mon, 2 Feb
Logo
20:40 - 19:30IAD-LGW
18h 50m2 stops
Logo
08:50 - 18:30LGW-IAD
14h 40m2 stops
£367
Find Deal
Tue, 28 Oct - Tue, 4 Nov
TAP AIR PORTUGAL Logo
17:50 - 20:30IAD-LGW
21h 40m2 stops
TAP AIR PORTUGAL Logo
16:25 - 15:20LGW-IAD
27h 55m1 stop
£375TAP AIR PORTUGAL
Find Deal
Wed, 15 Oct - Tue, 21 Oct
TAP AIR PORTUGAL Logo
17:00 - 20:25IAD-LGW
22h 25m2 stops
TAP AIR PORTUGAL Logo
16:25 - 15:20LGW-IAD
27h 55m1 stop
£377TAP AIR PORTUGAL
Find Deal
Tue, 14 Oct - Tue, 21 Oct
TAP AIR PORTUGAL Logo
22:30 - 20:35IAD-LGW
17h 05m2 stops
TAP AIR PORTUGAL Logo
16:35 - 15:15LGW-IAD
27h 40m1 stop
£378TAP AIR PORTUGAL
Find Deal
Sun, 30 Nov - Wed, 10 Dec

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
4 Oct
IAD23:15Washington, D.C. Dulles Intl
10h 20m
1 stop
LGW14:35London Gatwick
14 Oct
LGW15:40London Gatwick
32h 40m
1 stop
IAD19:20Washington, D.C. Dulles Intl
£361
Find similar
Icelandair
1 Oct
IAD20:30Washington, D.C. Dulles Intl
13h 10m
1 stop
LGW14:40London Gatwick
11 Oct
LGW15:40London Gatwick
11h 30m
1 stop
IAD22:10Washington, D.C. Dulles Intl
£362
Find similar
Icelandair
13 Oct
IAD20:30Washington, D.C. Dulles Intl
13h 05m
1 stop
LGW14:35London Gatwick
3 Dec
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
£363
Find similar

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
15 Oct
IAD17:50Washington, D.C. Dulles Intl
21h 40m
2 stops
LGW20:30London Gatwick
21 Oct
LGW16:25London Gatwick
27h 55m
1 stop
IAD15:20Washington, D.C. Dulles Intl
£375
Find similar
TAP AIR PORTUGAL
14 Oct
IAD17:00Washington, D.C. Dulles Intl
22h 25m
2 stops
LGW20:25London Gatwick
21 Oct
LGW16:25London Gatwick
27h 55m
1 stop
IAD15:20Washington, D.C. Dulles Intl
£377
Find similar
TAP AIR PORTUGAL
30 Nov
IAD22:30Washington, D.C. Dulles Intl
17h 05m
2 stops
LGW20:35London Gatwick
10 Dec
LGW16:35London Gatwick
27h 40m
1 stop
IAD15:15Washington, D.C. Dulles Intl
£378
Find similar

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 16 September 2025.
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

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sat 4/10

23:15-14:35

1 stop10h 20m

London Gatwick

Tue 14/10

15:40-19:20

1 stop32h 40m

£361

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 1/10

20:30-14:40

1 stop13h 10m

London Gatwick

Sat 11/10

15:40-22:10

1 stop11h 30m

£362

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 13/10

20:30-14:35

1 stop13h 05m

London Gatwick

Wed 3/12

11:55-18:30

1 stop11h 35m

£363

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 1/10

23:15-14:40

1 stop10h 25m

London Gatwick

Tue 7/10

15:40-19:20

1 stop32h 40m

£364

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 13/10

20:30-14:35

1 stop13h 05m

London Gatwick

Thu 23/10

15:40-19:20

1 stop32h 40m

£364

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 26/1

19:40-10:55

1 stop10h 15m

London Gatwick

Mon 2/2

11:55-18:30

1 stop11h 35m

£365

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 28/10

20:40-19:30

2 stops18h 50m

London Gatwick

Tue 4/11

08:50-18:30

2 stops14h 40m

£367

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 15/10

17:50-20:30

2 stops21h 40m

London Gatwick

Tue 21/10

16:25-15:20

1 stop27h 55m

£375

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 14/10

17:00-20:25

2 stops22h 25m

London Gatwick

Tue 21/10

16:25-15:20

1 stop27h 55m

£377

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 30/11

22:30-20:35

2 stops17h 05m

London Gatwick

Wed 10/12

16:35-15:15

1 stop27h 40m

£378

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 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 November. Flight prices, which tend to average around £369, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in November, then you should wait until August to fly from Washington, D.C. Dulles Intl Airport, when ticket prices are also cheap, with an average price of £402.

What is the cheapest day to depart on your flight to London Gatwick Airport?

According to our data, Thursday is the cheapest day to fly to London Gatwick Airport from Washington, D.C. Dulles Intl Airport. The lowest ticket price found for a Thursday departure recently was £614. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport on a Saturday will generally be more expensive and average around £816. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Direct flights

None
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.
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  • 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 15m.

  • 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
Luton
Milton Keynes
Maidstone
Gatwick
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Chelmsford
Dover
Hayes
Dartford
Winchester
Hounslow
Stansted

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.

An easier way to manage your London Gatwick Airport trip

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