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Cheap flights from Washington, D.C. to London from $188

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. to London departing on 2/2. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
7:40 pm - 10:55 amIAD-LGW
10h 15m1 stop
Icelandair Logo
11:55 am - 6:30 pmLGW-IAD
11h 35m1 stop
$563Icelandair
Find Deal
lun., ene. 5 - lun., feb. 23
Multiple Airlines Logo
7:40 pm - 8:15 pmIAD-LGW
19h 35m2 stops
Multiple Airlines Logo
6:55 am - 6:30 pmLGW-IAD
16h 35m2 stops
$564Multiple Airlines
Find Deal
vie., dic. 5 - mar., dic. 9
Icelandair Logo
7:40 pm - 10:55 amIAD-LGW
10h 15m1 stop
Icelandair Logo
11:55 am - 6:30 pmLGW-IAD
11h 35m1 stop
$566Icelandair
Find Deal
dom., dic. 14 - lun., ene. 12
TAP AIR PORTUGAL Logo
5:30 pm - 9:25 amIAD-LGW
34h 55m2 stops
TAP AIR PORTUGAL Logo
4:35 pm - 9:00 pmLGW-IAD
33h 25m1 stop
$572TAP AIR PORTUGAL
Find Deal
mar., dic. 30 - mar., ene. 13
TAP AIR PORTUGAL Logo
5:05 pm - 8:25 pmIAD-LGW
22h 20m2 stops
TAP AIR PORTUGAL Logo
10:35 am - 8:35 pmLGW-IAD
15h 00m1 stop
$573TAP AIR PORTUGAL
Find Deal
vie., abr. 3 - vie., abr. 10
SWISS Logo
8:30 pm - 5:50 pmIAD-LGW
16h 20m1 stop
SWISS Logo
6:40 pm - 4:40 pmLGW-IAD
27h 00m1 stop
$609SWISS
Find Deal
vie., dic. 5 - vie., dic. 12
American Airlines Logo
9:15 am - 9:00 amIAD-LGW
18h 45m2 stops
American Airlines Logo
11:20 am - 8:44 amLGW-IAD
26h 24m2 stops
$610American Airlines
Find Deal
jue., dic. 4 - vie., dic. 12
American Airlines Logo
6:24 am - 9:00 amIAD-LGW
21h 36m2 stops
American Airlines Logo
11:20 am - 8:41 amLGW-IAD
26h 21m2 stops
$611American Airlines
Find Deal
dom., nov. 16 - mar., nov. 25
British Airways Logo
11:19 am - 7:30 amDCA-LGW
15h 11m1 stop
British Airways Logo
11:20 am - 10:00 pmLGW-DCA
14h 40m1 stop
$626British Airways
Find Deal
lun., mar. 2 - lun., mar. 9
British Airways Logo
3:39 pm - 10:40 amDCA-LGW
14h 01m1 stop
British Airways Logo
10:40 am - 9:30 pmLGW-DCA
15h 50m1 stop
$632British Airways
Find Deal
mié., abr. 1 - mié., abr. 29

American Airlines flights from Washington, D.C. to London Gatwick Airport

Our best American Airlines deals on Washington, D.C. to London Gatwick Airport flight tickets
American Airlines
Dec 4
IAD9:15 amWashington, D.C. Dulles Intl
18h 45m
2 stops
LGW9:00 amLondon Gatwick
Dec 12
LGW11:20 amLondon Gatwick
26h 24m
2 stops
IAD8:44 amWashington, D.C. Dulles Intl
$610
Find similar
American Airlines
Nov 16
IAD6:24 amWashington, D.C. Dulles Intl
21h 36m
2 stops
LGW9:00 amLondon Gatwick
Nov 25
LGW11:20 amLondon Gatwick
26h 21m
2 stops
IAD8:41 amWashington, D.C. Dulles Intl
$611
Find similar
American Airlines
Dec 3
DCA10:06 amWashington, D.C. Reagan-National
16h 24m
2 stops
LGW7:30 amLondon Gatwick
Dec 10
LGW11:20 amLondon Gatwick
16h 47m
1 stop
DCA11:07 pmWashington, D.C. Reagan-National
$636
Find similar

British Airways flights from Washington, D.C. to London Gatwick Airport

Our best British Airways deals on Washington, D.C. to London Gatwick Airport flight tickets
British Airways
Mar 2
DCA11:19 amWashington, D.C. Reagan-National
15h 11m
1 stop
LGW7:30 amLondon Gatwick
Mar 9
LGW11:20 amLondon Gatwick
14h 40m
1 stop
DCA10:00 pmWashington, D.C. Reagan-National
$626
Find similar
British Airways
Apr 1
DCA3:39 pmWashington, D.C. Reagan-National
14h 01m
1 stop
LGW10:40 amLondon Gatwick
Apr 29
LGW10:40 amLondon Gatwick
15h 50m
1 stop
DCA9:30 pmWashington, D.C. Reagan-National
$632
Find similar
British Airways
Apr 12
DCA3:44 pmWashington, D.C. Reagan-National
34h 01m
1 stop
LGW6:45 amLondon Gatwick
Apr 21
LGW10:40 amLondon Gatwick
15h 50m
1 stop
DCA9:30 pmWashington, D.C. Reagan-National
$635
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 832,500 searches. Data last updated noviembre 4, 2025.
Use the filters below to find and compare flights from Washington, D.C. to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

lun. 1/5

7:40 pm-10:55 am

1 stop10h 15m

London Gatwick

lun. 2/23

11:55 am-6:30 pm

1 stop11h 35m

$563

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

vie. 12/5

7:40 pm-8:15 pm

2 stops19h 35m

London Gatwick

mar. 12/9

6:55 am-6:30 pm

2 stops16h 35m

$564

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

dom. 12/14

7:40 pm-10:55 am

1 stop10h 15m

London Gatwick

lun. 1/12

11:55 am-6:30 pm

1 stop11h 35m

$566

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

mar. 12/30

5:30 pm-9:25 am

2 stops34h 55m

London Gatwick

mar. 1/13

4:35 pm-9:00 pm

1 stop33h 25m

$572

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

vie. 4/3

5:05 pm-8:25 pm

2 stops22h 20m

London Gatwick

vie. 4/10

10:35 am-8:35 pm

1 stop15h 00m

$573

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

vie. 12/5

8:30 pm-5:50 pm

1 stop16h 20m

London Gatwick

vie. 12/12

6:40 pm-4:40 pm

1 stop27h 00m

$609

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

jue. 12/4

9:15 am-9:00 am

2 stops18h 45m

London Gatwick

vie. 12/12

11:20 am-8:44 am

2 stops26h 24m

$610

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

dom. 11/16

6:24 am-9:00 am

2 stops21h 36m

London Gatwick

mar. 11/25

11:20 am-8:41 am

2 stops26h 21m

$611

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

lun. 3/2

11:19 am-7:30 am

1 stop15h 11m

London Gatwick

lun. 3/9

11:20 am-10:00 pm

1 stop14h 40m

$626

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

mié. 4/1

3:39 pm-10:40 am

1 stop14h 01m

London Gatwick

mié. 4/29

10:40 am-9:30 pm

1 stop15h 50m

$632

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 London from

How to get the cheapest flight ticket from Washington, D.C. 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 typical price of a round-trip flight between Washington, D.C. and London Gatwick Airport?

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

In general, January is the cheapest month to fly from Washington, D.C. to London Gatwick Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $501. If you are unable to visit London Gatwick Airport during the month of January, then departing from Washington, D.C. during the month November is also very affordable. Most momondo users find prices during this month for around $582.

What is the cheapest day to depart on your flight to London Gatwick Airport?

The cheapest day to depart from Washington, D.C. to London Gatwick Airport is on a Wednesday when prices can be found for as low as $674. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Gatwick Airport on Saturday is $885.

What is the cheapest time of day to depart on your flight to London Gatwick Airport?

Flying to London Gatwick Airport from Washington, D.C. in the evening is the least expensive time of day to depart. momondo users have found prices as low as $694 when looking at flights departing in the evening. At noon is when there is more demand to fly to London Gatwick Airport, so prices are often more expensive at around $819 per ticket.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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. to London Gatwick Airport (WAS to LGW) flight deals and tips

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

Direct flights

None
There are no direct flights from Washington, D.C. to London Gatwick Airport. There are no popular flight routes from Washington, D.C. to London Gatwick Airport.
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  • How far is Washington, D.C. to London Gatwick by plane?

    A flight from Washington, D.C. to London Gatwick will travel around 3667.7 mi. Typically, this will take 10h 15m by plane in normal conditions.

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

    Prices for flights from Washington, D.C. to London Gatwick Airport were last updated today.

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

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

    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 Washington, D.C. to London Gatwick Airport.

  • What documentation or ID do you need to fly to London Gatwick Airport?

    The required travel and health documents for your London Gatwick Airport 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 London Gatwick Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

Compare and see reviews for airlines that fly from Washington, D.C. to London Gatwick Airport with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom $425Free CancellationRating
7.1
2,046 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom $472Free CancellationRating
7.1
571 reviews
Search Icelandair flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Chelmsford
Folkestone
Romford
Ilford
Cobham
Wembley
Stansted
Watford
Harrow

Why use momondo?

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

Finding the right flight to London from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to London from Washington, D.C. with this policy.

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

momondo provides multiple filters to help you find the best flight to London from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

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.

An easier way to manage your London Gatwick Airport trip

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