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Cheap flights from Washington, D.C. to London from $433

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 5/11. 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
8:20 pm - 12:35 pm
IAD
-
LCY
11h 15m
1 stop
SWISS Logo
9:15 am - 4:45 pm
LCY
-
IAD
12h 30m
1 stop
$824SWISS
Tue, Sep 1 - Wed, Sep 16
SWISS Logo
8:20 pm - 12:35 pm
IAD
-
LCY
11h 15m
1 stop
SWISS Logo
9:15 am - 4:45 pm
LCY
-
IAD
12h 30m
1 stop
$826SWISS
Mon, Apr 27 - Wed, May 6
SWISS Logo
8:20 pm - 12:35 pm
IAD
-
LCY
11h 15m
1 stop
SWISS Logo
9:15 am - 4:45 pm
LCY
-
IAD
12h 30m
1 stop
$827SWISS
Wed, Aug 26 - Thu, Sep 17
Multiple Airlines Logo
8:20 pm - 12:35 pm
IAD
-
LCY
11h 15m
1 stop
Multiple Airlines Logo
9:15 am - 4:05 pm
LCY
-
IAD
11h 50m
1 stop
$835Multiple Airlines
Mon, Aug 10 - Fri, Aug 21
Multiple Airlines Logo
8:20 pm - 12:35 pm
IAD
-
LCY
11h 15m
1 stop
Multiple Airlines Logo
9:15 am - 4:05 pm
LCY
-
IAD
11h 50m
1 stop
$836Multiple Airlines
Sun, Aug 9 - Fri, Aug 21
Delta Logo
12:59 pm - 7:55 am
DCA
-
LCY
13h 56m
2 stops
Delta Logo
10:20 am - 5:05 pm
LCY
-
DCA
35h 45m
2 stops
$892Delta
Wed, Apr 22 - Mon, May 4
Delta Logo
1:00 pm - 8:50 am
BWI
-
LCY
14h 50m
2 stops
Delta Logo
10:00 am - 10:13 pm
LCY
-
BWI
17h 13m
2 stops
$892Delta
Tue, Sep 1 - Tue, Sep 8
KLM Logo
11:05 am - 7:55 am
BWI
-
LCY
15h 50m
2 stops
KLM Logo
9:20 am - 11:46 pm
LCY
-
BWI
19h 26m
2 stops
$1,003KLM
Fri, May 8 - Fri, May 22
British Airways Logo
6:18 am - 9:10 am
DCA
-
LCY
21h 52m
2 stops
British Airways Logo
7:00 am - 5:06 pm
LCY
-
DCA
15h 06m
2 stops
$1,033British Airways
Wed, Jul 22 - Wed, Aug 12
British Airways Logo
6:30 am - 9:10 am
DCA
-
LCY
21h 40m
2 stops
British Airways Logo
7:55 pm - 5:06 pm
LCY
-
DCA
26h 11m
2 stops
$1,034British Airways
Wed, Jul 22 - Mon, Aug 17

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
Sep 1
IAD8:20 pmWashington, D.C. Dulles Intl
11h 15m
1 stop
LCY12:35 pmLondon City
Sep 16
LCY9:15 amLondon City
12h 30m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$824
SWISS
Apr 27
IAD8:20 pmWashington, D.C. Dulles Intl
11h 15m
1 stop
LCY12:35 pmLondon City
May 6
LCY9:15 amLondon City
12h 30m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$826
SWISS
Aug 26
IAD8:20 pmWashington, D.C. Dulles Intl
11h 15m
1 stop
LCY12:35 pmLondon City
Sep 17
LCY9:15 amLondon City
12h 30m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$827

Virgin Atlantic flights from Washington, D.C. to London City Airport

Our best Virgin Atlantic deals on Washington, D.C. to London City Airport flight tickets
Virgin Atlantic
Apr 12
IAD5:40 pmWashington, D.C. Dulles Intl
10h 50m
1 stop
LCY9:30 amLondon City
Apr 27
LCY8:15 pmLondon City
24h 20m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$839
Virgin Atlantic
Apr 12
IAD5:40 pmWashington, D.C. Dulles Intl
10h 50m
1 stop
LCY9:30 amLondon City
Apr 21
LCY9:20 amLondon City
11h 15m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$854
Virgin Atlantic
May 13
IAD6:10 pmWashington, D.C. Dulles Intl
10h 20m
1 stop
LCY9:30 amLondon City
May 20
LCY9:20 amLondon City
11h 15m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$858

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 April 2, 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

Cheapest round-trip

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 9/1

8:20 pm-12:35 pm

1 stop11h 15m

London City

Wed 9/16

9:15 am-4:45 pm

1 stop12h 30m

$824

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 4/27

8:20 pm-12:35 pm

1 stop11h 15m

London City

Wed 5/6

9:15 am-4:45 pm

1 stop12h 30m

$826

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Wed 8/26

8:20 pm-12:35 pm

1 stop11h 15m

London City

Thu 9/17

9:15 am-4:45 pm

1 stop12h 30m

$827
Quickest round-trip

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 8/10

8:20 pm-12:35 pm

1 stop11h 15m

London City

Fri 8/21

9:15 am-4:05 pm

1 stop11h 50m

$835

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 8/9

8:20 pm-12:35 pm

1 stop11h 15m

London City

Fri 8/21

9:15 am-4:05 pm

1 stop11h 50m

$836

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 4/22

12:59 pm-7:55 am

2 stops13h 56m

London City

Mon 5/4

10:20 am-5:05 pm

2 stops35h 45m

$892

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Tue 9/1

1:00 pm-8:50 am

2 stops14h 50m

London City

Tue 9/8

10:00 am-10:13 pm

2 stops17h 13m

$892

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Fri 5/8

11:05 am-7:55 am

2 stops15h 50m

London City

Fri 5/22

9:20 am-11:46 pm

2 stops19h 26m

$1,003

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 7/22

6:18 am-9:10 am

2 stops21h 52m

London City

Wed 8/12

7:00 am-5:06 pm

2 stops15h 06m

$1,033

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 7/22

6:30 am-9:10 am

2 stops21h 40m

London City

Mon 8/17

7:55 pm-5:06 pm

2 stops26h 11m

$1,034

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?

United Airlines, Delta, and ITA Airways 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 50m

Direct flights

None
The fastest flight from Washington, D.C. to London City Airport takes 10h 50m
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

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

  • 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 50m.

  • 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
Crawley
Hayes
Wembley
Stansted
Croydon
Dartford
Brentwood
Guildford
Cobham
Folkestone
Romford
Harrow
Watford
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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