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Cheap flights from Washington, D.C. to London from $432

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 7/4. 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 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
$833SWISS
Sun, Aug 23 - Thu, Sep 3
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
$836SWISS
Tue, Sep 1 - Thu, Sep 10
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
$843Multiple Airlines
Sun, Aug 9 - Wed, Aug 19
Multiple Airlines Logo
6:00 pm - 9:15 am
IAD
-
LCY
10h 15m
1 stop
Multiple Airlines Logo
9:15 am - 4:40 pm
LCY
-
IAD
12h 25m
1 stop
$876Multiple Airlines
Mon, Nov 2 - Fri, Nov 13
Iberia Logo
5:50 pm - 2:35 pm
IAD
-
LCY
15h 45m
1 stop
Iberia Logo
7:50 am - 4:20 pm
LCY
-
IAD
13h 30m
1 stop
$878Iberia
Mon, Nov 2 - Wed, Nov 11
KLM Logo
3:30 pm - 9:30 am
DCA
-
LCY
13h 00m
2 stops
KLM Logo
8:25 am - 5:23 pm
LCY
-
DCA
13h 58m
2 stops
$898KLM
Wed, Sep 16 - Wed, Sep 23
Delta Logo
7:40 pm - 8:50 am
BWI
-
LCY
32h 10m
2 stops
Delta Logo
10:00 am - 8:46 pm
LCY
-
BWI
15h 46m
2 stops
$898Delta
Mon, Nov 2 - Thu, Nov 19
Delta Logo
1:30 pm - 7:55 am
DCA
-
LCY
13h 25m
2 stops
Delta Logo
10:00 am - 11:12 pm
LCY
-
DCA
18h 12m
2 stops
$948Delta
Wed, Sep 30 - Mon, Oct 5
Iberia Logo
6:00 pm - 3:15 pm
DCA
-
LCY
16h 15m
2 stops
Iberia Logo
9:35 am - 10:57 pm
LCY
-
DCA
18h 22m
2 stops
$1,072Iberia
Thu, Oct 1 - Tue, Oct 6
KLM Logo
2:18 pm - 9:30 am
BWI
-
LCY
14h 12m
2 stops
KLM Logo
7:45 am - 5:47 pm
LCY
-
BWI
15h 02m
2 stops
$1,124KLM
Tue, Aug 18 - Thu, Aug 20

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
Jul 28
IAD8:20 pmWashington, D.C. Dulles Intl
11h 15m
1 stop
LCY12:35 pmLondon City
Aug 25
LCY9:15 amLondon City
12h 30m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$833
SWISS
Jul 19
IAD8:20 pmWashington, D.C. Dulles Intl
16h 05m
1 stop
LCY5:25 pmLondon City
Sep 1
LCY9:15 amLondon City
12h 30m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$837
SWISS
Jul 29
IAD8:20 pmWashington, D.C. Dulles Intl
11h 15m
1 stop
LCY12:35 pmLondon City
Aug 12
LCY9:15 amLondon City
12h 30m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$868

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

Our best Delta deals on Washington, D.C. to London City Airport flight tickets
Delta
Aug 2
IAD12:29 pmWashington, D.C. Dulles Intl
16h 01m
2 stops
LCY9:30 amLondon City
Oct 14
LCY9:20 amLondon City
11h 15m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$888
Delta
Aug 2
IAD5:40 pmWashington, D.C. Dulles Intl
10h 50m
1 stop
LCY9:30 amLondon City
Oct 12
LCY10:00 amLondon City
42h 02m
2 stops
IAD11:02 pmWashington, D.C. Dulles Intl
$893
Delta
Aug 8
IAD7:59 pmWashington, D.C. Dulles Intl
30h 16m
2 stops
LCY7:15 amLondon City
Oct 15
LCY10:00 amLondon City
10h 35m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$894

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 May 13, 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

Sun 8/23

8:20 pm-12:35 pm

1 stop11h 15m

London City

Thu 9/3

9:15 am-4:45 pm

1 stop12h 30m

$833

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

Thu 9/10

9:15 am-4:45 pm

1 stop12h 30m

$836

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

Wed 8/19

9:15 am-4:05 pm

1 stop11h 50m

$843
Quickest round-trip

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 11/2

6:00 pm-9:15 am

1 stop10h 15m

London City

Fri 11/13

9:15 am-4:40 pm

1 stop12h 25m

$876

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 11/2

5:50 pm-2:35 pm

1 stop15h 45m

London City

Wed 11/11

7:50 am-4:20 pm

1 stop13h 30m

$878

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 9/16

3:30 pm-9:30 am

2 stops13h 00m

London City

Wed 9/23

8:25 am-5:23 pm

2 stops13h 58m

$898

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Mon 11/2

7:40 pm-8:50 am

2 stops32h 10m

London City

Thu 11/19

10:00 am-8:46 pm

2 stops15h 46m

$898

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 9/30

1:30 pm-7:55 am

2 stops13h 25m

London City

Mon 10/5

10:00 am-11:12 pm

2 stops18h 12m

$948

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Thu 10/1

6:00 pm-3:15 pm

2 stops16h 15m

London City

Tue 10/6

9:35 am-10:57 pm

2 stops18h 22m

$1,072

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Tue 8/18

2:18 pm-9:30 am

2 stops14h 12m

London City

Thu 8/20

7:45 am-5:47 pm

2 stops15h 02m

$1,124

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

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

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

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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