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Cheap flights from Washington, D.C. Dulles Intl Airport to London from £190

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 2/12. 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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Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
19:40 - 10:55IAD-LGW
10h 15m1 stop
Icelandair Logo
11:55 - 18:30LGW-IAD
11h 35m1 stop
£431Icelandair
Find Deal
ma., 5 jan. - ma., 23 feb.
TAP AIR PORTUGAL Logo
17:30 - 20:40IAD-LGW
22h 10m2 stops
TAP AIR PORTUGAL Logo
16:35 - 21:00LGW-IAD
33h 25m1 stop
£431TAP AIR PORTUGAL
Find Deal
to., 15 jan. - ti., 20 jan.
Icelandair Logo
19:40 - 10:55IAD-LGW
10h 15m1 stop
Icelandair Logo
11:55 - 18:30LGW-IAD
11h 35m1 stop
£433Icelandair
Find Deal
sø., 14 des. - ma., 12 jan.
Multiple Airlines Logo
12:23 - 13:25IAD-LGW
20h 02m2 stops
Multiple Airlines Logo
08:45 - 18:50LGW-IAD
15h 05m1 stop
£434Multiple Airlines
Find Deal
lø., 31 jan. - lø., 7 feb.
TAP AIR PORTUGAL Logo
17:30 - 15:45IAD-LGW
17h 15m1 stop
TAP AIR PORTUGAL Logo
11:00 - 14:35LGW-IAD
32h 35m2 stops
£435TAP AIR PORTUGAL
Find Deal
ma., 1 des. - ma., 8 des.
Icelandair Logo
19:40 - 10:55IAD-LGW
10h 15m1 stop
Icelandair Logo
11:55 - 18:30LGW-IAD
11h 35m1 stop
£436Icelandair
Find Deal
to., 27 nov. - ti., 2 des.
Multiple Airlines Logo
12:30 - 11:25IAD-LGW
18h 55m2 stops
Multiple Airlines Logo
07:05 - 18:15LGW-IAD
15h 10m1 stop
£437Multiple Airlines
Find Deal
on., 11 mar. - ma., 16 mar.
TAP AIR PORTUGAL Logo
17:05 - 20:25IAD-LGW
22h 20m2 stops
TAP AIR PORTUGAL Logo
14:50 - 15:05LGW-IAD
29h 15m1 stop
£438TAP AIR PORTUGAL
Find Deal
fr., 3 apr. - to., 9 apr.
American Airlines Logo
09:15 - 09:00IAD-LGW
18h 45m2 stops
American Airlines Logo
11:20 - 08:44LGW-IAD
26h 24m2 stops
£467American Airlines
Find Deal
to., 4 des. - fr., 12 des.
American Airlines Logo
06:24 - 09:00IAD-LGW
21h 36m2 stops
American Airlines Logo
11:20 - 08:41LGW-IAD
26h 21m2 stops
£467American Airlines
Find Deal
sø., 16 nov. - ti., 25 nov.

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
5 Jan
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
23 Feb
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
£431
Find similar
Icelandair
12 Nov
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
24 Nov
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
£432
Find similar
Icelandair
14 Dec
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
12 Jan
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
£433
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 Jan
IAD17:30Washington, D.C. Dulles Intl
22h 10m
2 stops
LGW20:40London Gatwick
20 Jan
LGW16:35London Gatwick
33h 25m
1 stop
IAD21:00Washington, D.C. Dulles Intl
£431
Find similar
TAP AIR PORTUGAL
5 Nov
IAD22:30Washington, D.C. Dulles Intl
11h 35m
1 stop
LGW15:05London Gatwick
9 Nov
LGW10:40London Gatwick
33h 35m
1 stop
IAD15:15Washington, D.C. Dulles Intl
£434
Find similar
TAP AIR PORTUGAL
1 Dec
IAD17:30Washington, D.C. Dulles Intl
17h 15m
1 stop
LGW15:45London Gatwick
8 Dec
LGW11:00London Gatwick
32h 35m
2 stops
IAD14:35Washington, D.C. Dulles Intl
£435
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 5 November 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

ma. 5/1

19:40-10:55

1 stop10h 15m

London Gatwick

ma. 23/2

11:55-18:30

1 stop11h 35m

£431

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

to. 15/1

17:30-20:40

2 stops22h 10m

London Gatwick

ti. 20/1

16:35-21:00

1 stop33h 25m

£431

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

sø. 14/12

19:40-10:55

1 stop10h 15m

London Gatwick

ma. 12/1

11:55-18:30

1 stop11h 35m

£433

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

lø. 31/1

12:23-13:25

2 stops20h 02m

London Gatwick

lø. 7/2

08:45-18:50

1 stop15h 05m

£434

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

ma. 1/12

17:30-15:45

1 stop17h 15m

London Gatwick

ma. 8/12

11:00-14:35

2 stops32h 35m

£435

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

to. 27/11

19:40-10:55

1 stop10h 15m

London Gatwick

ti. 2/12

11:55-18:30

1 stop11h 35m

£436

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

on. 11/3

12:30-11:25

2 stops18h 55m

London Gatwick

ma. 16/3

07:05-18:15

1 stop15h 10m

£437

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

fr. 3/4

17:05-20:25

2 stops22h 20m

London Gatwick

to. 9/4

14:50-15:05

1 stop29h 15m

£438

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

to. 4/12

09:15-09:00

2 stops18h 45m

London Gatwick

fr. 12/12

11:20-08:44

2 stops26h 24m

£467

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

sø. 16/11

06:24-09:00

2 stops21h 36m

London Gatwick

ti. 25/11

11:20-08:41

2 stops26h 21m

£467

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 £377, 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 £418.

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 £638. 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 £849. 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
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Dover
Colchester
Chelmsford
Hayes
Worthing
Ramsgate
Dartford
Bedford
Winchester

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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