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Cheap flights from London Gatwick Airport to Washington, D.C. from $478

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 10/6. 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 London Gatwick Airport to Washington, D.C.

Cheap round-trip flights

American Airlines Logo
3:05 pm - 11:07 pmLGW-DCA
13h 02m1 stop
American Airlines Logo
3:35 pm - 7:50 amDCA-LGW
11h 15m1 stop
$537American Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 5
Multiple Airlines Logo
8:55 am - 6:55 pmLGW-IAD
15h 00m1 stop
Multiple Airlines Logo
6:05 pm - 9:15 amIAD-LGW
11h 10m1 stop
$538Multiple Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
Multiple Airlines Logo
2:00 pm - 3:32 pmLGW-BWI
30h 32m1 stop
Multiple Airlines Logo
8:52 pm - 10:00 amBWI-LGW
32h 08m1 stop
$538Multiple Airlines
Find Deal
Mon, Sep 29 - Fri, Oct 3
Icelandair Logo
3:40 pm - 10:10 pmLGW-IAD
11h 30m1 stop
Icelandair Logo
11:15 pm - 2:40 pmIAD-LGW
10h 25m1 stop
$540Icelandair
Find Deal
Fri, Oct 3 - Sun, Oct 5
Icelandair Logo
11:55 am - 6:40 pmLGW-BWI
11h 45m1 stop
Icelandair Logo
7:40 pm - 10:55 amBWI-LGW
10h 15m1 stop
$541Icelandair
Find Deal
Thu, Jan 8 - Sun, Jan 11
Multiple Airlines Logo
8:00 am - 5:40 pmLGW-BWI
14h 40m2 stops
Multiple Airlines Logo
6:50 pm - 11:10 pmBWI-LGW
23h 20m2 stops
$542Multiple Airlines
Find Deal
Thu, Oct 9 - Sun, Oct 12
Icelandair Logo
3:40 pm - 10:10 pmLGW-IAD
11h 30m1 stop
Icelandair Logo
11:15 pm - 2:40 pmIAD-LGW
10h 25m1 stop
$543Icelandair
Find Deal
Fri, Sep 26 - Fri, Oct 3
TAP AIR PORTUGAL Logo
4:00 pm - 9:00 pmLGW-IAD
34h 00m1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 9:50 amIAD-LGW
30h 20m1 stop
$551TAP AIR PORTUGAL
Find Deal
Thu, Dec 4 - Sun, Dec 14
SWISS Logo
6:40 pm - 4:15 pmLGW-IAD
26h 35m1 stop
SWISS Logo
8:45 pm - 5:50 pmIAD-LGW
16h 05m1 stop
$565SWISS
Find Deal
Thu, Oct 2 - Thu, Oct 16
SWISS Logo
6:40 pm - 5:40 pmLGW-IAD
27h 00m1 stop
SWISS Logo
5:25 pm - 5:50 pmIAD-LGW
19h 25m1 stop
$574SWISS
Find Deal
Mon, Oct 27 - Mon, Nov 3

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
Oct 2
LGW6:40 pmLondon Gatwick
26h 35m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
Oct 16
IAD8:45 pmWashington, D.C. Dulles Intl
16h 05m
1 stop
LGW5:50 pmLondon Gatwick
$565
Find similar
SWISS
Oct 27
LGW6:40 pmLondon Gatwick
27h 00m
1 stop
IAD5:40 pmWashington, D.C. Dulles Intl
Nov 3
IAD5:25 pmWashington, D.C. Dulles Intl
19h 25m
1 stop
LGW5:50 pmLondon Gatwick
$574
Find similar
SWISS
Oct 31
LGW6:40 pmLondon Gatwick
24h 55m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Nov 7
IAD8:30 pmWashington, D.C. Dulles Intl
16h 20m
1 stop
LGW5:50 pmLondon Gatwick
$579
Find similar

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
Oct 3
LGW3:40 pmLondon Gatwick
11h 30m
1 stop
IAD10:10 pmWashington, D.C. Dulles Intl
Oct 5
IAD11:15 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LGW2:40 pmLondon Gatwick
$540
Find similar
Icelandair
Jan 8
LGW11:55 amLondon Gatwick
11h 45m
1 stop
BWI6:40 pmBaltimore/Washington
Jan 11
BWI7:40 pmBaltimore/Washington
10h 15m
1 stop
LGW10:55 amLondon Gatwick
$541
Find similar
Icelandair
Sep 17
LGW3:35 pmLondon Gatwick
32h 45m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
Oct 1
IAD8:30 pmWashington, D.C. Dulles Intl
13h 10m
1 stop
LGW2:40 pmLondon Gatwick
$542
Find similar

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 September 16, 2025.
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

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Fri 10/3

3:05 pm-11:07 pm

1 stop13h 02m

Washington, D.C. Reagan-National

Sun 10/5

3:35 pm-7:50 am

1 stop11h 15m

$537

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 10/23

8:55 am-6:55 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Mon 10/27

6:05 pm-9:15 am

1 stop11h 10m

$538

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Mon 9/29

2:00 pm-3:32 pm

1 stop30h 32m

Baltimore/Washington

Fri 10/3

8:52 pm-10:00 am

1 stop32h 08m

$538

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 10/3

3:40 pm-10:10 pm

1 stop11h 30m

Washington, D.C. Dulles Intl

Sun 10/5

11:15 pm-2:40 pm

1 stop10h 25m

$540

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Thu 1/8

11:55 am-6:40 pm

1 stop11h 45m

Baltimore/Washington

Sun 1/11

7:40 pm-10:55 am

1 stop10h 15m

$541

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Thu 10/9

8:00 am-5:40 pm

2 stops14h 40m

Baltimore/Washington

Sun 10/12

6:50 pm-11:10 pm

2 stops23h 20m

$542

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 9/26

3:40 pm-10:10 pm

1 stop11h 30m

Washington, D.C. Dulles Intl

Fri 10/3

11:15 pm-2:40 pm

1 stop10h 25m

$543

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 12/4

4:00 pm-9:00 pm

1 stop34h 00m

Washington, D.C. Dulles Intl

Sun 12/14

10:30 pm-9:50 am

1 stop30h 20m

$551

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 10/2

6:40 pm-4:15 pm

1 stop26h 35m

Washington, D.C. Dulles Intl

Thu 10/16

8:45 pm-5:50 pm

1 stop16h 05m

$565

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 10/27

6:40 pm-5:40 pm

1 stop27h 00m

Washington, D.C. Dulles Intl

Mon 11/3

5:25 pm-5:50 pm

1 stop19h 25m

$574

Flights are sorted by cheapest round-trip flights 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.?

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

The month of March is, on average, the cheapest month to fly to Washington, D.C. from London Gatwick Airport, with most prices found around $581. If you’re not able to fly to Washington, D.C. in March, then January is your next best option. Flight prices from London Gatwick Airport to Washington, D.C. during January average around $590.

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 Thursday. momondo users have found tickets for Thursday departures for as low as $805. 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 $938.

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

In the evening 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 $762. Flying to Washington, D.C. in the evening 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 $867. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from London Gatwick Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $733 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from London Gatwick Airport for as low as $503 on momondo.

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.

Direct flights

None
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..
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  • 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 25m.

  • 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.

  • What is the most popular airline from London Gatwick Airport to Washington, D.C.?

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

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

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