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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 4/28. 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
8:30 pm - 12:55 pm
IAD
-
LCY
11h 25m
1 stop
SWISS Logo
9:15 am - 5:40 pm
LCY
-
IAD
12h 25m
1 stop
$577SWISS
Sun, Mar 1 - Tue, Mar 10
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
$607SWISS
Sun, Mar 1 - Tue, Mar 10
Multiple Airlines Logo
6:00 pm - 9:15 am
IAD
-
LCY
10h 15m
1 stop
Multiple Airlines Logo
9:15 am - 5:40 pm
LCY
-
IAD
12h 25m
1 stop
$618Multiple Airlines
Sun, Mar 1 - Tue, Mar 10
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
$619SWISS
Tue, Mar 17 - Tue, Mar 24
Multiple Airlines Logo
6:00 pm - 9:15 am
IAD
-
LCY
10h 15m
1 stop
Multiple Airlines Logo
9:15 am - 5:40 pm
LCY
-
IAD
12h 25m
1 stop
$628Multiple Airlines
Sun, Mar 1 - Tue, Mar 10
Delta Logo
1:55 pm - 8:10 am
DCA
-
LCY
14h 15m
2 stops
Delta Logo
10:00 am - 10:08 pm
LCY
-
DCA
17h 08m
2 stops
$669Delta
Thu, Mar 19 - Tue, Mar 31
Delta Logo
2:10 pm - 8:50 am
BWI
-
LCY
13h 40m
2 stops
Delta Logo
9:20 am - 10:13 pm
LCY
-
BWI
17h 53m
2 stops
$683Delta
Wed, Aug 5 - Wed, Aug 19
Iberia Logo
1:54 pm - 8:50 am
DCA
-
LCY
14h 56m
2 stops
Iberia Logo
7:15 pm - 10:16 pm
LCY
-
DCA
31h 01m
2 stops
$712Iberia
Mon, Mar 9 - Mon, Mar 16
British Airways Logo
2:16 pm - 2:35 pm
DCA
-
LCY
20h 19m
2 stops
British Airways Logo
8:20 pm - 6:33 pm
LCY
-
DCA
26h 13m
2 stops
$716British Airways
Mon, Mar 9 - Sun, Mar 15
British Airways Logo
2:16 pm - 1:50 pm
DCA
-
LCY
19h 34m
2 stops
British Airways Logo
8:30 pm - 6:33 pm
LCY
-
DCA
26h 03m
2 stops
$775British Airways
Wed, Mar 11 - Mon, Mar 16

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

Our best KLM deals on Washington, D.C. to London City Airport flight tickets
KLM
Mar 11
IAD7:05 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
LCY8:50 amLondon City
Mar 16
LCY9:20 amLondon City
11h 45m
1 stop
IAD5:05 pmWashington, D.C. Dulles Intl
$654
KLM
Mar 31
IAD5:40 pmWashington, D.C. Dulles Intl
10h 10m
1 stop
LCY8:50 amLondon City
Apr 8
LCY9:20 amLondon City
11h 15m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$670
KLM
Feb 26
DCA11:06 amWashington, D.C. Reagan-National
15h 09m
2 stops
LCY7:15 amLondon City
Mar 1
LCY8:05 pmLondon City
25h 22m
2 stops
DCA4:27 pmWashington, D.C. Reagan-National
$761

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
Mar 9
DCA1:54 pmWashington, D.C. Reagan-National
14h 56m
2 stops
LCY8:50 amLondon City
Mar 16
LCY7:15 pmLondon City
31h 01m
2 stops
DCA10:16 pmWashington, D.C. Reagan-National
$712
Iberia
May 5
DCA1:25 pmWashington, D.C. Reagan-National
14h 10m
2 stops
LCY8:35 amLondon City
May 12
LCY11:00 amLondon City
16h 29m
2 stops
DCA10:29 pmWashington, D.C. Reagan-National
$876
Iberia
Mar 2
DCA1:54 pmWashington, D.C. Reagan-National
13h 56m
2 stops
LCY8:50 amLondon City
Mar 9
LCY7:15 pmLondon City
25h 22m
2 stops
DCA4:37 pmWashington, D.C. Reagan-National
$896

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 12, 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 3/1

8:30 pm-12:55 pm

1 stop11h 25m

London City

Tue 3/10

9:15 am-5:40 pm

1 stop12h 25m

$577

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 3/1

8:30 pm-12:55 pm

1 stop11h 25m

London City

Tue 3/10

9:15 am-5:40 pm

1 stop12h 25m

$607

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 3/1

6:00 pm-9:15 am

1 stop10h 15m

London City

Tue 3/10

9:15 am-5:40 pm

1 stop12h 25m

$618

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 3/17

9:30 pm-12:55 pm

1 stop11h 25m

London City

Tue 3/24

9:15 am-5:40 pm

1 stop12h 25m

$619

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 3/1

6:00 pm-9:15 am

1 stop10h 15m

London City

Tue 3/10

9:15 am-5:40 pm

1 stop12h 25m

$628

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Thu 3/19

1:55 pm-8:10 am

2 stops14h 15m

London City

Tue 3/31

10:00 am-10:08 pm

2 stops17h 08m

$669

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Wed 8/5

2:10 pm-8:50 am

2 stops13h 40m

London City

Wed 8/19

9:20 am-10:13 pm

2 stops17h 53m

$683

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Mon 3/9

1:54 pm-8:50 am

2 stops14h 56m

London City

Mon 3/16

7:15 pm-10:16 pm

2 stops31h 01m

$712

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Mon 3/9

2:16 pm-2:35 pm

2 stops20h 19m

London City

Sun 3/15

8:20 pm-6:33 pm

2 stops26h 13m

$716

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 3/11

2:16 pm-1:50 pm

2 stops19h 34m

London City

Mon 3/16

8:30 pm-6:33 pm

2 stops26h 03m

$775

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?

Iberia, KLM, and Delta 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

9h 40m

Direct flights

None
The fastest flight from Washington, D.C. to London City Airport takes 9h 40m
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 9h 40m.

  • 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
Dartford
Croydon
Brentwood
Guildford
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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