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Cheap flights from Washington, D.C. to London from $323

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 4/22. 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 Washington, D.C. to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
SWISS Logo
9:30 pm - 6:40 pm
IAD
-
LCY
17h 10m
1 stop
SWISS Logo
7:15 pm - 4:45 pm
LCY
-
IAD
26h 30m
1 stop
$603SWISS
Sun, Mar 22 - Mon, Mar 30
KLM Logo
6:05 pm - 8:50 am
IAD
-
LCY
9h 45m
1 stop
KLM Logo
8:40 am - 4:05 pm
LCY
-
IAD
12h 25m
1 stop
$616KLM
Sun, Feb 22 - Tue, Mar 3
SWISS Logo
8:30 pm - 12:55 pm
IAD
-
LCY
11h 25m
1 stop
SWISS Logo
9:15 am - 5:40 pm
LCY
-
IAD
12h 25m
1 stop
$619SWISS
Tue, Feb 24 - Tue, Mar 10
SWISS Logo
8:30 pm - 12:55 pm
IAD
-
LCY
11h 25m
1 stop
SWISS Logo
9:15 am - 4:40 pm
LCY
-
IAD
12h 25m
1 stop
$620SWISS
Tue, Feb 24 - Tue, Mar 3
SWISS Logo
9:30 pm - 12:55 pm
IAD
-
LCY
11h 25m
1 stop
SWISS Logo
9:15 am - 5:40 pm
LCY
-
IAD
12h 25m
1 stop
$621SWISS
Thu, Mar 19 - Tue, Mar 24
Delta Logo
1:00 pm - 8:50 am
BWI
-
LCY
14h 50m
2 stops
Delta Logo
9:20 am - 10:13 pm
LCY
-
BWI
17h 53m
2 stops
$683Delta
Wed, Aug 5 - Wed, Aug 19
Delta Logo
1:00 pm - 8:50 am
BWI
-
LCY
14h 50m
2 stops
Delta Logo
9:20 am - 10:13 pm
LCY
-
BWI
17h 53m
2 stops
$685Delta
Wed, Aug 5 - Wed, Aug 19
Scandinavian Airlines Logo
3:05 pm - 11:40 am
DCA
-
LCY
39h 35m
2 stops
Scandinavian Airlines Logo
10:00 am - 10:02 pm
LCY
-
DCA
17h 02m
2 stops
$739Scandinavian Airlines
Thu, Apr 30 - Wed, May 6
British Airways Logo
4:34 pm - 2:05 pm
DCA
-
LCY
17h 31m
2 stops
British Airways Logo
3:45 pm - 6:33 pm
LCY
-
DCA
30h 48m
2 stops
$772British Airways
Tue, Mar 10 - Mon, Mar 23
British Airways Logo
6:00 am - 8:35 am
DCA
-
LCY
21h 35m
2 stops
British Airways Logo
7:00 pm - 5:06 pm
LCY
-
DCA
27h 06m
2 stops
$777British Airways
Mon, May 11 - Mon, May 25

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

Our best SWISS deals on Washington, D.C. to London City Airport flight tickets
SWISS
Mar 22
IAD9:30 pmWashington, D.C. Dulles Intl
17h 10m
1 stop
LCY6:40 pmLondon City
Mar 30
LCY7:15 pmLondon City
26h 30m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$603
SWISS
Feb 24
IAD8:30 pmWashington, D.C. Dulles Intl
11h 25m
1 stop
LCY12:55 pmLondon City
Mar 10
LCY9:15 amLondon City
12h 25m
1 stop
IAD5:40 pmWashington, D.C. Dulles Intl
$619
SWISS
Feb 24
IAD8:30 pmWashington, D.C. Dulles Intl
11h 25m
1 stop
LCY12:55 pmLondon City
Mar 3
LCY9:15 amLondon City
12h 25m
1 stop
IAD4:40 pmWashington, D.C. Dulles Intl
$620

Lufthansa flights from Washington, D.C. to London City Airport

Our best Lufthansa deals on Washington, D.C. to London City Airport flight tickets
Lufthansa
Apr 6
IAD5:55 pmWashington, D.C. Dulles Intl
19h 00m
1 stop
LCY5:55 pmLondon City
Apr 15
LCY9:15 amLondon City
11h 50m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$657
Lufthansa
Feb 16
IAD6:00 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LCY9:15 amLondon City
Feb 23
LCY6:15 pmLondon City
26h 35m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
$820
Lufthansa
Feb 18
IAD6:00 pmWashington, D.C. Dulles Intl
18h 40m
1 stop
LCY5:40 pmLondon City
Feb 24
LCY6:15 pmLondon City
26h 35m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
$830

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to London City 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 February 8, 2026.
Use the filters below to find and compare flights from Washington, D.C. to London City Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 3/22

9:30 pm-6:40 pm

1 stop17h 10m

London City

Mon 3/30

7:15 pm-4:45 pm

1 stop26h 30m

$603

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 2/22

6:05 pm-8:50 am

1 stop9h 45m

London City

Tue 3/3

8:40 am-4:05 pm

1 stop12h 25m

$616

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 2/24

8:30 pm-12:55 pm

1 stop11h 25m

London City

Tue 3/10

9:15 am-5:40 pm

1 stop12h 25m

$619

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 2/24

8:30 pm-12:55 pm

1 stop11h 25m

London City

Tue 3/3

9:15 am-4:40 pm

1 stop12h 25m

$620

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Thu 3/19

9:30 pm-12:55 pm

1 stop11h 25m

London City

Tue 3/24

9:15 am-5:40 pm

1 stop12h 25m

$621

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Wed 8/5

1:00 pm-8:50 am

2 stops14h 50m

London City

Wed 8/19

9:20 am-10:13 pm

2 stops17h 53m

$683

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Wed 8/5

1:00 pm-8:50 am

2 stops14h 50m

London City

Wed 8/19

9:20 am-10:13 pm

2 stops17h 53m

$685

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Thu 4/30

3:05 pm-11:40 am

2 stops39h 35m

London City

Wed 5/6

10:00 am-10:02 pm

2 stops17h 02m

$739

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Tue 3/10

4:34 pm-2:05 pm

2 stops17h 31m

London City

Mon 3/23

3:45 pm-6:33 pm

2 stops30h 48m

$772

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Mon 5/11

6:00 am-8:35 am

2 stops21h 35m

London City

Mon 5/25

7:00 pm-5:06 pm

2 stops27h 06m

$777

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 City 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 cheapest airline that flies from Washington, D.C. to London City?

SWISS, Virgin Atlantic, and KLM are the most popular carriers operating from Washington, D.C. to London City

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

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

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

Fastest flight time

10h 10m

Direct flights

None
The fastest flight from Washington, D.C. to London City Airport takes 10h 10m
There are no direct flights from Washington, D.C. to London City Airport. There are no popular flight routes from Washington, D.C. to London City Airport.
Search flight deals

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

    A flight from Washington, D.C. to London City will travel around 3669.3 mi. By plane, this route typically takes 10h 10m.

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to London City Airport.

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

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

Traveling to a place near London?

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

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Washington, D.C..

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

Yes. momondo allows you to filter the results for Washington, D.C. to London flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Washington, D.C..

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

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

An easier way to manage your London City Airport trip

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