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Cheap flights from London Gatwick Airport to Washington, D.C. from $431

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Gatwick Airport to Washington, D.C. departing on 8/31. 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 London Gatwick Airport to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
3:40 pm - 10:15 pm
LGW
-
IAD
11h 35m
1 stop
Icelandair Logo
8:30 pm - 2:40 pm
IAD
-
LGW
13h 10m
1 stop
$581Icelandair
Wed, Sep 2 - Thu, Sep 10
Icelandair Logo
3:40 pm - 7:20 pm
LGW
-
IAD
32h 40m
1 stop
Icelandair Logo
8:30 pm - 11:45 am
IAD
-
LGW
10h 15m
1 stop
$583Icelandair
Mon, Aug 31 - Mon, Sep 7
Icelandair Logo
3:40 pm - 7:20 pm
LGW
-
IAD
32h 40m
1 stop
Icelandair Logo
11:20 pm - 2:35 pm
IAD
-
LGW
10h 15m
1 stop
$584Icelandair
Mon, Aug 24 - Sat, Sep 19
Icelandair Logo
1:00 pm - 7:20 pm
LGW
-
IAD
11h 20m
1 stop
Icelandair Logo
8:30 pm - 2:40 pm
IAD
-
LGW
13h 10m
1 stop
$585Icelandair
Tue, Sep 1 - Thu, Sep 10
Icelandair Logo
1:00 pm - 7:20 pm
LGW
-
IAD
11h 20m
1 stop
Icelandair Logo
8:30 pm - 2:40 pm
IAD
-
LGW
13h 10m
1 stop
$587Icelandair
Thu, Aug 27 - Mon, Aug 31
TAP AIR PORTUGAL Logo
4:35 pm - 8:35 pm
LGW
-
IAD
33h 00m
1 stop
TAP AIR PORTUGAL Logo
5:25 pm - 9:50 am
IAD
-
LGW
11h 25m
1 stop
$588TAP AIR PORTUGAL
Tue, Dec 1 - Tue, Dec 8
Icelandair Logo
1:00 pm - 7:20 pm
LGW
-
IAD
11h 20m
1 stop
Icelandair Logo
8:30 pm - 2:40 pm
IAD
-
LGW
13h 10m
1 stop
$589Icelandair
Thu, Aug 27 - Thu, Sep 17
Icelandair Logo
3:40 pm - 7:20 pm
LGW
-
IAD
32h 40m
1 stop
Icelandair Logo
11:20 pm - 2:40 pm
IAD
-
LGW
10h 20m
1 stop
$590Icelandair
Tue, Aug 25 - Tue, Sep 1
Icelandair Logo
3:40 pm - 7:20 pm
LGW
-
IAD
32h 40m
1 stop
Icelandair Logo
8:30 pm - 2:40 pm
IAD
-
LGW
13h 10m
1 stop
$591Icelandair
Wed, Sep 23 - Tue, Sep 29
Icelandair Logo
11:55 am - 6:30 pm
LGW
-
IAD
11h 35m
1 stop
Icelandair Logo
7:40 pm - 10:55 am
IAD
-
LGW
10h 15m
1 stop
$592Icelandair
Sun, Dec 13 - Thu, Jan 7

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Icelandair flights from London Gatwick Airport to Washington, D.C.

Our best Icelandair deals on London Gatwick Airport to Washington, D.C. flight tickets
Icelandair
Sep 2
LGW3:40 pmLondon Gatwick
11h 35m
1 stop
IAD10:15 pmWashington, D.C. Dulles Intl
Sep 10
IAD8:30 pmWashington, D.C. Dulles Intl
13h 10m
1 stop
LGW2:40 pmLondon Gatwick
$581
Icelandair
Aug 31
LGW3:40 pmLondon Gatwick
32h 40m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
Sep 7
IAD8:30 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LGW11:45 amLondon Gatwick
$583
Icelandair
Aug 24
LGW3:40 pmLondon Gatwick
32h 40m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
Sep 19
IAD11:20 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LGW2:35 pmLondon Gatwick
$584

SWISS flights from London Gatwick Airport to Washington, D.C.

Our best SWISS deals on London Gatwick Airport to Washington, D.C. flight tickets
SWISS
Sep 10
LGW9:25 amLondon Gatwick
12h 20m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
Sep 16
IAD8:20 pmWashington, D.C. Dulles Intl
16h 30m
1 stop
LGW5:50 pmLondon Gatwick
$596
SWISS
Sep 17
LGW9:25 amLondon Gatwick
12h 20m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
Sep 24
IAD8:20 pmWashington, D.C. Dulles Intl
16h 30m
1 stop
LGW5:50 pmLondon Gatwick
$612
SWISS
Sep 14
LGW9:25 amLondon Gatwick
12h 20m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
Sep 21
IAD8:20 pmWashington, D.C. Dulles Intl
16h 30m
1 stop
LGW5:50 pmLondon Gatwick
$617

momondo Fare Finder

 
Customize your flight search to find flights from London Gatwick Airport to Washington, D.C. 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 832,500 searches. Data last updated August 1, 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 9/2

3:40 pm-10:15 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 9/10

8:30 pm-2:40 pm

1 stop13h 10m

$581

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 8/31

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Mon 9/7

8:30 pm-11:45 am

1 stop10h 15m

$583

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 8/24

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Sat 9/19

11:20 pm-2:35 pm

1 stop10h 15m

$584

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 9/1

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Thu 9/10

8:30 pm-2:40 pm

1 stop13h 10m

$585

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 8/27

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Mon 8/31

8:30 pm-2:40 pm

1 stop13h 10m

$587

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 12/1

4:35 pm-8:35 pm

1 stop33h 00m

Washington, D.C. Dulles Intl

Tue 12/8

5:25 pm-9:50 am

1 stop11h 25m

$588

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 8/27

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Thu 9/17

8:30 pm-2:40 pm

1 stop13h 10m

$589

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 8/25

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Tue 9/1

11:20 pm-2:40 pm

1 stop10h 20m

$590

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 9/23

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Tue 9/29

8:30 pm-2:40 pm

1 stop13h 10m

$591
Quickest round-trip

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 12/13

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 1/7

7:40 pm-10:55 am

1 stop10h 15m

$592

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

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

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 London Gatwick Airport and Washington, D.C.?

Prices are currently typical for flights on this route.

Typical prices usually range from $554 to $797.
The lowest price recently found on this route was $581.

What is the cheapest month to fly to Washington, D.C.?

The month of April is, on average, the cheapest month to fly to Washington, D.C. from London Gatwick Airport, with most prices found around $511. If you’re not able to fly to Washington, D.C. in April, then November is your next best option. Flight prices from London Gatwick Airport to Washington, D.C. during November average around $520.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from London Gatwick Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $740. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Gatwick Airport to Washington, D.C. for around $919.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the morning is the cheapest time of day to fly from London Gatwick Airport to Washington, D.C. when you can find flight prices for as low as $789. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $805. Of course, these prices can vary depending on the time of year and what airport you fly to.

Can stopping save me money on London Gatwick Airport to Washington, D.C. flights?

You could potentially save up to 47% on your flight if you consider stops on a London Gatwick Airport to Washington, D.C. flight.

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

Are you open to changing your travel dates? Check out the ideal times to fly from London Gatwick Airport to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Find info about flight duration, direct flights, and airports for your flight from London Gatwick Airport to Washington, D.C.

Fastest flight time

11h 20m

Direct flights

None
The fastest flight from London Gatwick Airport to Washington, D.C. takes 11h 20m
There are no direct flights from London Gatwick Airport to Washington, D.C.. There are no popular flight routes from London Gatwick Airport to Washington, D.C..
Search flight deals

Frequently asked questions about flying from London Gatwick Airport to Washington, D.C.

  • How far is London Gatwick to Washington, D.C. by plane?

    London Gatwick and Washington, D.C. are 3667.7 mi apart from one another. In terms of flight time, this usually takes a little over 11h 20m.

  • When did momondo last update prices for flights from London Gatwick Airport to Washington, D.C.?

    Prices for flights from London Gatwick Airport to Washington, D.C. are refreshed on a daily basis.

  • How old do you have to be to fly from London Gatwick Airport to Washington, D.C.?

    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 London Gatwick Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Arlington
Gettysburg
Waldorf
Laurel
Woodbridge
Fredericksburg
Gaithersburg
Linthicum Heights
Rockville
Silver Spring
Towson
Colonial Beach
Springfield
Fairfax
Tysons
Bethesda
Edgewood
College Park

Why use momondo?

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

It is quick and easy to find London to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

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

All flight searches from London to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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

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 London to Washington, D.C..

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

Price alerts on flights to Washington, D.C. from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport