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Cheap flights from Washington, D.C. to London from $351

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 3/3. 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 - 4:40 pm
LCY
-
IAD
12h 25m
1 stop
$620SWISS
Tue, Feb 24 - Tue, Mar 3
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
$623SWISS
Sun, Feb 15 - Tue, Feb 24
SWISS Logo
8:30 pm - 5:05 pm
IAD
-
LCY
15h 35m
1 stop
SWISS Logo
9:15 am - 4:45 pm
LCY
-
IAD
12h 30m
1 stop
$625SWISS
Tue, Feb 17 - Tue, Mar 31
Multiple Airlines Logo
6:00 pm - 9:15 am
IAD
-
LCY
10h 15m
1 stop
Multiple Airlines Logo
9:15 am - 4:45 pm
LCY
-
IAD
12h 30m
1 stop
$627Multiple Airlines
Mon, Feb 16 - Tue, Mar 31
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
$628SWISS
Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
11:05 am - 9:05 am
DCA
-
LCY
17h 00m
2 stops
Multiple Airlines Logo
6:15 pm - 3:31 pm
LCY
-
DCA
26h 16m
2 stops
$703Multiple Airlines
Wed, Feb 18 - Mon, Feb 23
British Airways Logo
8:47 am - 8:50 am
DCA
-
LCY
20h 03m
2 stops
British Airways Logo
7:45 pm - 6:33 pm
LCY
-
DCA
26h 48m
2 stops
$739British Airways
Tue, Mar 17 - Mon, Mar 23
British Airways Logo
1:41 pm - 8:50 am
DCA
-
LCY
15h 09m
2 stops
British Airways Logo
7:45 pm - 6:33 pm
LCY
-
DCA
26h 48m
2 stops
$742British Airways
Wed, Mar 18 - Mon, Mar 23
Delta Logo
10:54 am - 7:55 am
BWI
-
LCY
16h 01m
2 stops
Delta Logo
10:00 am - 11:41 am
LCY
-
BWI
54h 41m
2 stops
$796Delta
Thu, Apr 9 - Mon, Apr 20
Delta Logo
10:54 am - 9:30 am
BWI
-
LCY
17h 36m
2 stops
Delta Logo
10:00 am - 6:17 pm
LCY
-
BWI
37h 17m
2 stops
$799Delta
Wed, Apr 8 - Mon, Apr 20

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
Feb 16
IAD12:24 pmWashington, D.C. Dulles Intl
13h 51m
2 stops
LCY7:15 amLondon City
Apr 1
LCY9:20 amLondon City
11h 15m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$675
Delta
Apr 9
BWI10:54 amBaltimore/Washington
16h 01m
2 stops
LCY7:55 amLondon City
Apr 20
LCY10:00 amLondon City
54h 41m
2 stops
BWI11:41 amBaltimore/Washington
$796
Delta
Apr 8
BWI10:54 amBaltimore/Washington
17h 36m
2 stops
LCY9:30 amLondon City
Apr 22
LCY10:00 amLondon City
43h 38m
2 stops
BWI12:38 amBaltimore/Washington
$799

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
Mar 17
IAD7:00 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LCY9:15 amLondon City
Mar 24
LCY9:15 amLondon City
12h 25m
1 stop
IAD5:40 pmWashington, D.C. Dulles Intl
$686
Lufthansa
Mar 18
IAD7:00 pmWashington, D.C. Dulles Intl
18h 40m
1 stop
LCY5:40 pmLondon City
Mar 30
LCY9:15 amLondon City
11h 50m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$688
Lufthansa
Feb 12
IAD6:00 pmWashington, D.C. Dulles Intl
10h 20m
1 stop
LCY9:20 amLondon City
Feb 18
LCY6:10 pmLondon City
26h 40m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
$746

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 January 29, 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

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

Sun 2/15

8:30 pm-12:55 pm

1 stop11h 25m

London City

Tue 2/24

9:15 am-4:40 pm

1 stop12h 25m

$623

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 2/17

8:30 pm-5:05 pm

1 stop15h 35m

London City

Tue 3/31

9:15 am-4:45 pm

1 stop12h 30m

$625

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 2/16

6:00 pm-9:15 am

1 stop10h 15m

London City

Tue 3/31

9:15 am-4:45 pm

1 stop12h 30m

$627

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

$628

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 2/18

11:05 am-9:05 am

2 stops17h 00m

London City

Mon 2/23

6:15 pm-3:31 pm

2 stops26h 16m

$703

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Tue 3/17

8:47 am-8:50 am

2 stops20h 03m

London City

Mon 3/23

7:45 pm-6:33 pm

2 stops26h 48m

$739

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 3/18

1:41 pm-8:50 am

2 stops15h 09m

London City

Mon 3/23

7:45 pm-6:33 pm

2 stops26h 48m

$742

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Thu 4/9

10:54 am-7:55 am

2 stops16h 01m

London City

Mon 4/20

10:00 am-11:41 am

2 stops54h 41m

$796

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Wed 4/8

10:54 am-9:30 am

2 stops17h 36m

London City

Mon 4/20

10:00 am-6:17 pm

2 stops37h 17m

$799

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?

Delta, KLM, and Iberia 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

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