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Cheap flights from London Gatwick Airport to Washington, D.C. from £234

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 28/4. 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 return flights

Enter your travel dates to find the best prices.
Icelandair Logo
15:40 - 19:20
LGW
-
IAD
32h 40m
1 stop
Icelandair Logo
20:30 - 11:45
IAD
-
LGW
10h 15m
1 stop
£401Icelandair
Fri, 24 Apr - Wed, 29 Apr
British Airways Logo
14:30 - 20:59
LGW
-
DCA
35h 29m
1 stop
British Airways Logo
15:10 - 06:50
DCA
-
LGW
34h 40m
1 stop
£403British Airways
Wed, 13 May - Sat, 16 May
Icelandair Logo
15:40 - 19:20
LGW
-
IAD
32h 40m
1 stop
Icelandair Logo
20:30 - 11:45
IAD
-
LGW
10h 15m
1 stop
£403Icelandair
Wed, 22 Apr - Mon, 27 Apr
SWISS Logo
09:25 - 16:45
LGW
-
IAD
12h 20m
1 stop
SWISS Logo
20:20 - 17:50
IAD
-
LGW
16h 30m
1 stop
£405SWISS
Mon, 13 Apr - Sun, 26 Apr
SWISS Logo
09:25 - 16:45
LGW
-
IAD
12h 20m
1 stop
SWISS Logo
17:35 - 17:50
IAD
-
LGW
19h 15m
1 stop
£406SWISS
Fri, 8 May - Thu, 14 May
American Airlines Logo
12:20 - 23:59
LGW
-
DCA
16h 39m
2 stops
American Airlines Logo
14:36 - 08:40
DCA
-
LGW
13h 04m
1 stop
£436American Airlines
Thu, 16 Apr - Tue, 28 Apr
American Airlines Logo
12:20 - 21:23
LGW
-
DCA
14h 03m
1 stop
American Airlines Logo
07:29 - 08:40
DCA
-
LGW
20h 11m
1 stop
£439American Airlines
Thu, 16 Apr - Tue, 28 Apr
Multiple Airlines Logo
18:35 - 08:15
LGW
-
BWI
42h 40m
2 stops
Multiple Airlines Logo
17:35 - 10:00
BWI
-
LGW
35h 25m
1 stop
£446Multiple Airlines
Tue, 21 Apr - Tue, 5 May
Multiple Airlines Logo
08:50 - 19:25
LGW
-
BWI
15h 35m
2 stops
Multiple Airlines Logo
20:30 - 15:10
BWI
-
LGW
13h 40m
2 stops
£448Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Iberia Logo
11:30 - 22:29
LGW
-
DCA
15h 59m
2 stops
Iberia Logo
13:45 - 10:50
DCA
-
LGW
16h 05m
2 stops
£454Iberia
Thu, 16 Apr - Tue, 28 Apr

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

Our best Iberia deals on London Gatwick Airport to Washington, D.C. flight tickets
Iberia
9 Apr
LGW20:40London Gatwick
23h 50m
1 stop
IAD15:30Washington, D.C. Dulles Intl
15 Apr
IAD17:00Washington, D.C. Dulles Intl
12h 50m
1 stop
LGW10:50London Gatwick
£419
Iberia
18 May
LGW20:40London Gatwick
23h 50m
1 stop
IAD15:30Washington, D.C. Dulles Intl
17 Jun
IAD17:00Washington, D.C. Dulles Intl
12h 50m
1 stop
LGW10:50London Gatwick
£433
Iberia
17 Apr
LGW20:40London Gatwick
23h 50m
1 stop
IAD15:30Washington, D.C. Dulles Intl
22 Apr
IAD17:00Washington, D.C. Dulles Intl
22h 00m
1 stop
LGW20:00London Gatwick
£434

TAP AIR PORTUGAL flights from London Gatwick Airport to Washington, D.C.

Our best TAP AIR PORTUGAL deals on London Gatwick Airport to Washington, D.C. flight tickets
TAP AIR PORTUGAL
16 Apr
LGW14:50London Gatwick
29h 20m
1 stop
IAD15:10Washington, D.C. Dulles Intl
23 Apr
IAD22:35Washington, D.C. Dulles Intl
30h 10m
1 stop
LGW09:45London Gatwick
£436
TAP AIR PORTUGAL
16 Apr
LGW21:20London Gatwick
22h 50m
2 stops
IAD15:10Washington, D.C. Dulles Intl
20 Apr
IAD22:35Washington, D.C. Dulles Intl
12h 00m
1 stop
LGW15:35London Gatwick
£439
TAP AIR PORTUGAL
22 Apr
LGW16:25London Gatwick
27h 45m
1 stop
IAD15:10Washington, D.C. Dulles Intl
26 Apr
IAD22:35Washington, D.C. Dulles Intl
30h 10m
1 stop
LGW09:45London Gatwick
£446

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 8 March 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 return flight

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 24/4

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Wed 29/4

20:30-11:45

1 stop10h 15m

£401

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Wed 13/5

14:30-20:59

1 stop35h 29m

Washington, D.C. Reagan-National

Sat 16/5

15:10-06:50

1 stop34h 40m

£403

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 22/4

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Mon 27/4

20:30-11:45

1 stop10h 15m

£403
Fastest return journey

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 13/4

09:25-16:45

1 stop12h 20m

Washington, D.C. Dulles Intl

Sun 26/4

20:20-17:50

1 stop16h 30m

£405

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 8/5

09:25-16:45

1 stop12h 20m

Washington, D.C. Dulles Intl

Thu 14/5

17:35-17:50

1 stop19h 15m

£406

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 16/4

12:20-23:59

2 stops16h 39m

Washington, D.C. Reagan-National

Tue 28/4

14:36-08:40

1 stop13h 04m

£436

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 16/4

12:20-21:23

1 stop14h 03m

Washington, D.C. Reagan-National

Tue 28/4

07:29-08:40

1 stop20h 11m

£439

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Tue 21/4

18:35-08:15

2 stops42h 40m

Baltimore/Washington

Tue 5/5

17:35-10:00

1 stop35h 25m

£446

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Tue 21/4

08:50-19:25

2 stops15h 35m

Baltimore/Washington

Tue 28/4

20:30-15:10

2 stops13h 40m

£448

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 16/4

11:30-22:29

2 stops15h 59m

Washington, D.C. Reagan-National

Tue 28/4

13:45-10:50

2 stops16h 05m

£454

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 cheapest month to fly to Washington, D.C.?

The cheapest month to fly to Washington, D.C. from London Gatwick Airport is in April. Flight prices, which tend to average around £408, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. in April, then you should wait until November to fly from London Gatwick Airport, when ticket prices are also cheap, with an average price of £450.

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 £579. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from London Gatwick Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £627.

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

At midday 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 £589. Flying to Washington, D.C. at midday is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly in the morning, with an average ticket price of £597. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

You could potentially save up to 58% 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 return 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

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

    The distance between London Gatwick and Washington, D.C. is about 3667.7 mi. By plane, this route typically takes 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. were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents you'll need for your trip to Washington, D.C. 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 Washington, D.C.. 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 London Gatwick Airport to Washington, D.C.?

Best airlines flying from London Gatwick Airport to Washington, D.C.

Compare and see reviews for airlines that fly from London Gatwick Airport to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £381Free CancellationRating
7.1
617 reviews
Search Icelandair flights

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Laurel
College Park
Arlington
Fairfax
Linthicum Heights
Alexandria
Glen Burnie
Lutherville Timonium
Ellicott City
Cambridge
Lexington Park
Westminster
Woodbridge
Bethesda
Silver Spring
Rockville
Owings Mills
Landover
National Harbor

Why use momondo?

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

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 London to Washington, D.C. for you.

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

Yes. All flights to Washington, D.C. from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between London and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of London to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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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