Which layover airport has the shortest travel time from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 10h 25m.

Which airport is the most popular layover for flights between Washington, D.C. Dulles Intl Airport and London Gatwick Airport?

Reykjavik (KEF) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to London Gatwick?

Icelandair, Delta, and Virgin Atlantic are the most popular carriers operating from Washington, D.C. Dulles Intl to London Gatwick

Which layover airport offers the lowest fares from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Flights via Lisbon (LIS) offer the lowest average round-trip price of $445.

Which layover airport has the shortest connection time from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Reykjavik (KEF) has the shortest average layover time for this route: 1h 38m.

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

As of July 2026, there are 2 operators available to choose from for flights 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.

$276 Cheap Flights from Washington, D.C. Dulles Intl Airport to London Gatwick Airport in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:32 pm - 10:00 am

IAD

LGW

15h 28m

1 stop

2:00 pm - 10:07 am

LGW

IAD

25h 07m

1 stop

$621Multiple Airlines

Tue, Aug 11 - Tue, Aug 25

8:30 pm - 2:40 pm

IAD

LGW

13h 10m

1 stop

11:55 am - 6:30 pm

LGW

IAD

11h 35m

1 stop

$622Icelandair

Fri, Oct 23 - Fri, Dec 4

10:35 pm - 11:55 pm

IAD

LGW

20h 20m

2 stops

6:10 pm - 3:10 pm

LGW

IAD

26h 00m

2 stops

$622Multiple Airlines

Mon, Sep 14 - Tue, Sep 22

8:20 pm - 8:40 am

IAD

LGW

31h 20m

3 stops

11:00 am - 5:00 pm

LGW

IAD

35h 00m

2 stops

$622Multiple Airlines

Thu, Oct 1 - Wed, Oct 7

8:30 pm - 8:00 am

IAD

LGW

30h 30m

3 stops

5:40 pm - 5:15 pm

LGW

IAD

28h 35m

2 stops

$623Multiple Airlines

Thu, Nov 12 - Tue, Nov 17

5:25 pm - 9:50 am

IAD

LGW

11h 25m

1 stop

10:40 am - 8:35 pm

LGW

IAD

14h 55m

1 stop

$626TAP AIR PORTUGAL

Thu, Nov 26 - Wed, Dec 2

10:35 pm - 3:35 pm

IAD

LGW

12h 00m

1 stop

10:35 am - 8:35 pm

LGW

IAD

15h 00m

1 stop

$626TAP AIR PORTUGAL

Tue, Sep 22 - Tue, Sep 29

10:30 pm - 3:05 pm

IAD

LGW

11h 35m

1 stop

10:40 am - 8:35 pm

LGW

IAD

14h 55m

1 stop

$626TAP AIR PORTUGAL

Wed, Nov 11 - Wed, Nov 18

8:40 pm - 2:40 pm

IAD

LGW

13h 00m

1 stop

11:55 am - 6:30 pm

LGW

IAD

11h 35m

1 stop

$627Icelandair

Sat, Oct 24 - Fri, Dec 4

11:20 pm - 2:40 pm

IAD

LGW

10h 20m

1 stop

11:55 am - 6:30 pm

LGW

IAD

11h 35m

1 stop

$633Icelandair

Wed, Oct 7 - Wed, Nov 4

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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

Oct 7

IAD11:20 pmWashington, D.C. Dulles Intl

10h 20m

1 stop

LGW2:40 pmLondon Gatwick

Nov 6

LGW11:55 amLondon Gatwick

11h 35m

1 stop

IAD6:30 pmWashington, D.C. Dulles Intl

$633

Icelandair

Oct 7

IAD11:20 pmWashington, D.C. Dulles Intl

10h 20m

1 stop

LGW2:40 pmLondon Gatwick

Nov 2

LGW11:55 amLondon Gatwick

11h 35m

1 stop

IAD6:30 pmWashington, D.C. Dulles Intl

$635

Icelandair

Oct 22

IAD8:30 pmWashington, D.C. Dulles Intl

13h 10m

1 stop

LGW2:40 pmLondon Gatwick

Dec 4

LGW11:55 amLondon Gatwick

11h 35m

1 stop

IAD6:30 pmWashington, D.C. Dulles Intl

$641

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

Sep 22

IAD10:35 pmWashington, D.C. Dulles Intl

12h 00m

1 stop

LGW3:35 pmLondon Gatwick

Sep 29

LGW10:35 amLondon Gatwick

15h 00m

1 stop

IAD8:35 pmWashington, D.C. Dulles Intl

$626

TAP AIR PORTUGAL

Sep 22

IAD10:35 pmWashington, D.C. Dulles Intl

12h 00m

1 stop

LGW3:35 pmLondon Gatwick

Sep 30

LGW10:35 amLondon Gatwick

15h 00m

1 stop

IAD8:35 pmWashington, D.C. Dulles Intl

$627

TAP AIR PORTUGAL

Sep 21

IAD5:40 pmWashington, D.C. Dulles Intl

16h 55m

1 stop

LGW3:35 pmLondon Gatwick

Sep 30

LGW10:35 amLondon Gatwick

15h 00m

1 stop

IAD8:35 pmWashington, D.C. Dulles Intl

$628

momondo Fare Finder

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

Tue 8/11

1:32 pm-10:00 am

1 stop15h 28m

London Gatwick

Tue 8/25

2:00 pm-10:07 am

1 stop25h 07m

$621

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 10/23

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Fri 12/4

11:55 am-6:30 pm

1 stop11h 35m

$622

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 9/14

10:35 pm-11:55 pm

2 stops20h 20m

London Gatwick

Tue 9/22

6:10 pm-3:10 pm

2 stops26h 00m

$622

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 10/1

8:20 pm-8:40 am

3 stops31h 20m

London Gatwick

Wed 10/7

11:00 am-5:00 pm

2 stops35h 00m

$622

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 11/12

8:30 pm-8:00 am

3 stops30h 30m

London Gatwick

Tue 11/17

5:40 pm-5:15 pm

2 stops28h 35m

$623

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 11/26

5:25 pm-9:50 am

1 stop11h 25m

London Gatwick

Wed 12/2

10:40 am-8:35 pm

1 stop14h 55m

$626

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 9/22

10:35 pm-3:35 pm

1 stop12h 00m

London Gatwick

Tue 9/29

10:35 am-8:35 pm

1 stop15h 00m

$626

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 11/11

10:30 pm-3:05 pm

1 stop11h 35m

London Gatwick

Wed 11/18

10:40 am-8:35 pm

1 stop14h 55m

$626

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sat 10/24

8:40 pm-2:40 pm

1 stop13h 00m

London Gatwick

Fri 12/4

11:55 am-6:30 pm

1 stop11h 35m

$627

Quickest round-trip

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 10/7

11:20 pm-2:40 pm

1 stop10h 20m

London Gatwick

Wed 11/4

11:55 am-6:30 pm

1 stop11h 35m

$633

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

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 $446.

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?
As of July 2026, there are 2 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. Dulles Intl Airport to London Gatwick Airport is Icelandair (71% of total bookings). The next most popular airline is TAP AIR PORTUGAL (29%).

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 PORTUGAL	PriceFrom $309	Free Cancellation	Rating 7.2 2,352 reviews		Search TAP AIR PORTUGAL flights
Icelandair	PriceFrom $494	Free Cancellation	Rating 7.0 716 reviews		Search Icelandair flights

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Gatwick

Milton Keynes

Luton

Hayes

Dover

Croydon

Wembley

Stansted

Kingston upon Thames

Watford

Slough

Harrow

Cobham

Richmond

Uxbridge

Guildford

Worthing

Romford

Ilford

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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.

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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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Flights to London Heathrow Airportfrom $273

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Cheap flights from Washington, D.C. Dulles Intl Airport to London from $276

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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

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

momondo Fare Finder

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.

See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to London Gatwick Airport

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

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to London Gatwick?

Which airport is the most popular layover for flights between Washington, D.C. Dulles Intl Airport and London Gatwick Airport?

Which layover airport offers the lowest fares from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Which layover airport has the shortest travel time from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

Which layover airport has the shortest connection time from Washington, D.C. Dulles Intl Airport to London Gatwick Airport?

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

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

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Traveling to a place near London?

Why use momondo?

An easier way to manage your London Gatwick Airport trip

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