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Cheap flights from Washington, D.C. to London from $346

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 9/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Washington, D.C. to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
5:40 pm - 9:30 am
IAD
-
LCY
10h 50m
1 stop
KLM Logo
10:00 am - 3:35 pm
LCY
-
IAD
10h 35m
1 stop
$882KLM
Sun, Sep 20 - Thu, Sep 24
Virgin Atlantic Logo
12:30 pm - 7:15 am
IAD
-
LCY
13h 45m
2 stops
Virgin Atlantic Logo
9:20 am - 3:35 pm
LCY
-
IAD
11h 15m
1 stop
$883Virgin Atlantic
Tue, Aug 18 - Tue, Aug 25
Lufthansa Logo
3:25 pm - 8:40 am
IAD
-
LCY
12h 15m
1 stop
Lufthansa Logo
9:15 am - 4:05 pm
LCY
-
IAD
11h 50m
1 stop
$884Lufthansa
Wed, Aug 12 - Fri, Aug 21
SWISS Logo
8:20 pm - 5:25 pm
IAD
-
LCY
16h 05m
1 stop
SWISS Logo
9:15 am - 4:45 pm
LCY
-
IAD
12h 30m
1 stop
$885SWISS
Tue, Sep 1 - Tue, Sep 8
SWISS Logo
8:10 pm - 12:50 pm
IAD
-
LCY
11h 40m
1 stop
SWISS Logo
9:15 am - 4:45 pm
LCY
-
IAD
12h 30m
1 stop
$886SWISS
Tue, Nov 10 - Wed, Nov 18
Virgin Atlantic Logo
5:40 pm - 6:30 pm
IAD
-
LCY
19h 50m
1 stop
Virgin Atlantic Logo
9:20 am - 11:14 pm
LCY
-
IAD
18h 54m
2 stops
$888Virgin Atlantic
Tue, Sep 1 - Wed, Sep 30
Delta Logo
7:59 pm - 9:30 am
IAD
-
LCY
32h 31m
2 stops
Delta Logo
10:00 am - 3:35 pm
LCY
-
IAD
10h 35m
1 stop
$892Delta
Sat, Sep 5 - Fri, Sep 11
Delta Logo
3:15 pm - 9:30 am
DCA
-
LCY
13h 15m
2 stops
Delta Logo
8:25 am - 7:50 pm
LCY
-
DCA
16h 25m
2 stops
$893Delta
Tue, Sep 22 - Wed, Sep 30
Multiple Airlines Logo
8:30 pm - 5:30 pm
BWI
-
LCY
16h 00m
2 stops
Multiple Airlines Logo
9:15 am - 7:25 pm
LCY
-
BWI
15h 10m
2 stops
$999Multiple Airlines
Mon, Aug 24 - Fri, Aug 28
Multiple Airlines Logo
6:59 am - 8:25 am
DCA
-
LCY
20h 26m
2 stops
Multiple Airlines Logo
9:15 am - 9:48 pm
LCY
-
DCA
17h 33m
2 stops
$1,255Multiple Airlines
Fri, Jul 3 - Wed, Jul 8

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

Our best Iberia deals on Washington, D.C. to London City Airport flight tickets
Iberia
Sep 8
IAD8:25 pmWashington, D.C. Dulles Intl
13h 50m
1 stop
LCY3:15 pmLondon City
Sep 29
LCY8:10 amLondon City
15h 40m
2 stops
IAD6:50 pmWashington, D.C. Dulles Intl
$947
Iberia
Jun 17
IAD5:00 pmWashington, D.C. Dulles Intl
17h 15m
1 stop
LCY3:15 pmLondon City
Jul 2
LCY9:50 amLondon City
14h 05m
1 stop
IAD6:55 pmWashington, D.C. Dulles Intl
$1,386
Iberia
Jun 17
IAD5:00 pmWashington, D.C. Dulles Intl
17h 15m
1 stop
LCY3:15 pmLondon City
Jul 2
LCY8:00 amLondon City
15h 55m
2 stops
IAD6:55 pmWashington, D.C. Dulles Intl
$1,401

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
Aug 12
IAD3:25 pmWashington, D.C. Dulles Intl
12h 15m
1 stop
LCY8:40 amLondon City
Aug 21
LCY9:15 amLondon City
11h 50m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$884
Lufthansa
Aug 12
IAD3:25 pmWashington, D.C. Dulles Intl
12h 15m
1 stop
LCY8:40 amLondon City
Aug 26
LCY9:15 amLondon City
11h 50m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$886
Lufthansa
Sep 1
IAD3:25 pmWashington, D.C. Dulles Intl
12h 15m
1 stop
LCY8:40 amLondon City
Sep 8
LCY9:15 amLondon City
11h 50m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$900

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 June 10, 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
Quickest round-trip

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 9/20

5:40 pm-9:30 am

1 stop10h 50m

London City

Thu 9/24

10:00 am-3:35 pm

1 stop10h 35m

$882

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 8/18

12:30 pm-7:15 am

2 stops13h 45m

London City

Tue 8/25

9:20 am-3:35 pm

1 stop11h 15m

$883

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Wed 8/12

3:25 pm-8:40 am

1 stop12h 15m

London City

Fri 8/21

9:15 am-4:05 pm

1 stop11h 50m

$884

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 9/1

8:20 pm-5:25 pm

1 stop16h 05m

London City

Tue 9/8

9:15 am-4:45 pm

1 stop12h 30m

$885

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 11/10

8:10 pm-12:50 pm

1 stop11h 40m

London City

Wed 11/18

9:15 am-4:45 pm

1 stop12h 30m

$886

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 9/1

5:40 pm-6:30 pm

1 stop19h 50m

London City

Wed 9/30

9:20 am-11:14 pm

2 stops18h 54m

$888

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sat 9/5

7:59 pm-9:30 am

2 stops32h 31m

London City

Fri 9/11

10:00 am-3:35 pm

1 stop10h 35m

$892

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Tue 9/22

3:15 pm-9:30 am

2 stops13h 15m

London City

Wed 9/30

8:25 am-7:50 pm

2 stops16h 25m

$893

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Mon 8/24

8:30 pm-5:30 pm

2 stops16h 00m

London City

Fri 8/28

9:15 am-7:25 pm

2 stops15h 10m

$999

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Fri 7/3

6:59 am-8:25 am

2 stops20h 26m

London City

Wed 7/8

9:15 am-9:48 pm

2 stops17h 33m

$1,255

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

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

You could potentially save up to 8% on your flight if you consider stops on a Washington, D.C. to London City Airport flight.

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

9h 30m

Direct flights

None
The fastest flight from Washington, D.C. to London City Airport takes 9h 30m
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.
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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 9h 30m.

  • 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
Hounslow
Gatwick
Milton Keynes
Luton
Dover
Hayes
Crawley
Croydon
Wembley
Stansted
Harrow
Slough
Brentwood
Watford
Cobham
Guildford
Folkestone
Uxbridge
Romford
Chelmsford

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.

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