Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to London from £203

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 14/9. 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

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.
TAP AIR PORTUGAL Logo
17:40 - 15:35
IAD
-
LGW
16h 55m
1 stop
TAP AIR PORTUGAL Logo
16:25 - 15:10
LGW
-
IAD
27h 45m
1 stop
£463TAP AIR PORTUGAL
Mon, 5 Oct - Wed, 14 Oct
Multiple Airlines Logo
20:20 - 08:40
IAD
-
LGW
31h 20m
3 stops
Multiple Airlines Logo
11:00 - 17:00
LGW
-
IAD
35h 00m
2 stops
£464Multiple Airlines
Thu, 1 Oct - Wed, 7 Oct
Multiple Airlines Logo
20:30 - 08:00
IAD
-
LGW
30h 30m
3 stops
Multiple Airlines Logo
17:40 - 17:15
LGW
-
IAD
28h 35m
2 stops
£465Multiple Airlines
Thu, 12 Nov - Tue, 17 Nov
Multiple Airlines Logo
20:20 - 20:10
IAD
-
LGW
18h 50m
2 stops
Multiple Airlines Logo
20:50 - 17:00
LGW
-
IAD
25h 10m
2 stops
£466Multiple Airlines
Thu, 1 Oct - Wed, 7 Oct
TAP AIR PORTUGAL Logo
17:25 - 09:50
IAD
-
LGW
11h 25m
1 stop
TAP AIR PORTUGAL Logo
10:40 - 20:35
LGW
-
IAD
14h 55m
1 stop
£467TAP AIR PORTUGAL
Thu, 5 Nov - Wed, 11 Nov
TAP AIR PORTUGAL Logo
17:40 - 15:35
IAD
-
LGW
16h 55m
1 stop
TAP AIR PORTUGAL Logo
10:35 - 20:35
LGW
-
IAD
15h 00m
1 stop
£468TAP AIR PORTUGAL
Mon, 21 Sep - Thu, 1 Oct
Multiple Airlines Logo
17:40 - 23:55
IAD
-
LGW
25h 15m
2 stops
Multiple Airlines Logo
10:00 - 15:10
LGW
-
IAD
34h 10m
2 stops
£469Multiple Airlines
Mon, 21 Sep - Tue, 29 Sep
TAP AIR PORTUGAL Logo
18:25 - 09:50
IAD
-
LGW
11h 25m
1 stop
TAP AIR PORTUGAL Logo
16:35 - 14:45
LGW
-
IAD
27h 10m
1 stop
£469TAP AIR PORTUGAL
Thu, 29 Oct - Mon, 2 Nov
Multiple Airlines Logo
20:20 - 10:20
IAD
-
LGW
33h 00m
3 stops
Multiple Airlines Logo
11:00 - 17:00
LGW
-
IAD
35h 00m
3 stops
£471Multiple Airlines
Wed, 30 Sep - Tue, 6 Oct
Icelandair Logo
23:20 - 14:40
IAD
-
LGW
10h 20m
1 stop
Icelandair Logo
11:55 - 18:30
LGW
-
IAD
11h 35m
1 stop
£472Icelandair
Wed, 7 Oct - Fri, 6 Nov

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
7 Oct
IAD23:20Washington, D.C. Dulles Intl
10h 20m
1 stop
LGW14:40London Gatwick
6 Nov
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
£472
Icelandair
7 Oct
IAD23:20Washington, D.C. Dulles Intl
10h 20m
1 stop
LGW14:40London Gatwick
2 Nov
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
£474
Icelandair
22 Oct
IAD20:30Washington, D.C. Dulles Intl
13h 10m
1 stop
LGW14:40London Gatwick
4 Dec
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
£478

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
5 Oct
IAD17:40Washington, D.C. Dulles Intl
16h 55m
1 stop
LGW15:35London Gatwick
14 Oct
LGW16:25London Gatwick
27h 45m
1 stop
IAD15:10Washington, D.C. Dulles Intl
£463
TAP AIR PORTUGAL
5 Nov
IAD17:25Washington, D.C. Dulles Intl
11h 25m
1 stop
LGW09:50London Gatwick
11 Nov
LGW10:40London Gatwick
14h 55m
1 stop
IAD20:35Washington, D.C. Dulles Intl
£467
TAP AIR PORTUGAL
21 Sept
IAD22:35Washington, D.C. Dulles Intl
12h 00m
1 stop
LGW15:35London Gatwick
30 Sept
LGW16:25London Gatwick
27h 45m
1 stop
IAD15:10Washington, D.C. Dulles Intl
£468

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 31 July 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

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 5/10

17:40-15:35

1 stop16h 55m

London Gatwick

Wed 14/10

16:25-15:10

1 stop27h 45m

£463

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 1/10

20:20-08:40

3 stops31h 20m

London Gatwick

Wed 7/10

11:00-17:00

2 stops35h 00m

£464

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 12/11

20:30-08:00

3 stops30h 30m

London Gatwick

Tue 17/11

17:40-17:15

2 stops28h 35m

£465

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 1/10

20:20-20:10

2 stops18h 50m

London Gatwick

Wed 7/10

20:50-17:00

2 stops25h 10m

£466

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 5/11

17:25-09:50

1 stop11h 25m

London Gatwick

Wed 11/11

10:40-20:35

1 stop14h 55m

£467

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 21/9

17:40-15:35

1 stop16h 55m

London Gatwick

Thu 1/10

10:35-20:35

1 stop15h 00m

£468

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 21/9

17:40-23:55

2 stops25h 15m

London Gatwick

Tue 29/9

10:00-15:10

2 stops34h 10m

£469

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 29/10

18:25-09:50

1 stop11h 25m

London Gatwick

Mon 2/11

16:35-14:45

1 stop27h 10m

£469

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 30/9

20:20-10:20

3 stops33h 00m

London Gatwick

Tue 6/10

11:00-17:00

3 stops35h 00m

£471
Fastest return journey

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 7/10

23:20-14:40

1 stop10h 20m

London Gatwick

Fri 6/11

11:55-18:30

1 stop11h 35m

£472

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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 £333.

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
Wembley
Gatwick
Milton Keynes
Luton
Southend-on-Sea
Slough
Ipswich
Maidstone
Folkestone
Ilford
Hastings
Canterbury
Guildford
Chichester
Bedford
Hayes
Colchester
Harlow
Chelmsford

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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 30/8
Sun 6/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London