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Cheap flights from Washington, D.C. to London from $365

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 1/20. 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 25m1 stop
SWISS Logo
9:15 am - 4:40 pm
LCY
-
IAD
12h 25m1 stop
$585SWISS
Sun, Jan 11 - Tue, Jan 20
SWISS Logo
5:25 pm - 12:55 pm
IAD
-
LCY
14h 30m1 stop
SWISS Logo
9:15 am - 4:40 pm
LCY
-
IAD
12h 25m1 stop
$590SWISS
Wed, Feb 11 - Thu, Feb 19
SWISS Logo
8:30 pm - 8:40 am
IAD
-
LCY
31h 10m1 stop
SWISS Logo
9:15 am - 4:40 pm
LCY
-
IAD
12h 25m1 stop
$592SWISS
Sun, Jan 11 - Tue, Jan 20
British Airways Logo
1:44 pm - 8:50 am
DCA
-
LCY
14h 06m2 stops
British Airways Logo
7:50 am - 10:03 pm
LCY
-
DCA
19h 13m2 stops
$607British Airways
Wed, Jan 14 - Wed, Jan 21
Delta Logo
3:38 pm - 9:30 am
BWI
-
LCY
12h 52m2 stops
Delta Logo
7:45 am - 7:07 pm
LCY
-
BWI
16h 22m2 stops
$662Delta
Fri, Jan 23 - Wed, Feb 4
Iberia Logo
1:35 pm - 2:05 pm
DCA
-
LCY
19h 30m2 stops
Iberia Logo
7:50 am - 6:54 pm
LCY
-
DCA
16h 04m2 stops
$665Iberia
Wed, Jan 21 - Wed, Jan 28
Iberia Logo
1:30 pm - 8:50 am
DCA
-
LCY
14h 20m2 stops
Iberia Logo
7:50 am - 4:54 pm
LCY
-
DCA
38h 04m2 stops
$666Iberia
Wed, Feb 18 - Fri, Feb 27
Multiple Airlines Logo
8:40 pm - 4:40 pm
DCA
-
LCY
39h 00m2 stops
Multiple Airlines Logo
9:15 am - 9:58 pm
LCY
-
DCA
16h 43m2 stops
$742Multiple Airlines
Fri, Mar 6 - Mon, Mar 16
Delta Logo
10:53 am - 7:15 am
BWI
-
LCY
15h 22m2 stops
Delta Logo
7:45 am - 7:19 pm
LCY
-
BWI
16h 34m2 stops
$783Delta
Mon, Mar 30 - Mon, Apr 6
British Airways Logo
1:44 pm - 1:50 pm
DCA
-
LCY
19h 06m2 stops
British Airways Logo
5:05 pm - 9:30 pm
LCY
-
DCA
33h 25m2 stops
$784British Airways
Sun, Dec 28 - Wed, Jan 7

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
Jan 11
IAD8:30 pmWashington, D.C. Dulles Intl
11h 25m
1 stop
LCY12:55 pmLondon City
Jan 20
LCY9:15 amLondon City
12h 25m
1 stop
IAD4:40 pmWashington, D.C. Dulles Intl
$585
Find similar
SWISS
Jan 11
IAD8:30 pmWashington, D.C. Dulles Intl
11h 25m
1 stop
LCY12:55 pmLondon City
Jan 20
LCY5:40 pmLondon City
26h 30m
1 stop
IAD3:10 pmWashington, D.C. Dulles Intl
$590
Find similar
SWISS
Jan 11
IAD8:30 pmWashington, D.C. Dulles Intl
31h 10m
1 stop
LCY8:40 amLondon City
Jan 20
LCY9:15 amLondon City
12h 25m
1 stop
IAD4:40 pmWashington, D.C. Dulles Intl
$592
Find similar

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
Feb 26
IAD6:05 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
LCY8:50 amLondon City
Mar 5
LCY10:00 amLondon City
11h 05m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$616
Find similar
Virgin Atlantic
Dec 9
IAD6:05 pmWashington, D.C. Dulles Intl
17h 30m
1 stop
LCY4:35 pmLondon City
Dec 16
LCY10:00 amLondon City
11h 05m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$633
Find similar
Virgin Atlantic
Jan 22
IAD6:05 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
LCY8:50 amLondon City
Jan 28
LCY8:05 pmLondon City
25h 00m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$644
Find similar

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 December 4, 2025.
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 1/11

8:30 pm-12:55 pm

1 stop11h 25m

London City

Tue 1/20

9:15 am-4:40 pm

1 stop12h 25m

$585

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Wed 2/11

5:25 pm-12:55 pm

1 stop14h 30m

London City

Thu 2/19

9:15 am-4:40 pm

1 stop12h 25m

$590

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 1/11

8:30 pm-8:40 am

1 stop31h 10m

London City

Tue 1/20

9:15 am-4:40 pm

1 stop12h 25m

$592

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 1/14

1:44 pm-8:50 am

2 stops14h 06m

London City

Wed 1/21

7:50 am-10:03 pm

2 stops19h 13m

$607

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Fri 1/23

3:38 pm-9:30 am

2 stops12h 52m

London City

Wed 2/4

7:45 am-7:07 pm

2 stops16h 22m

$662

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 1/21

1:35 pm-2:05 pm

2 stops19h 30m

London City

Wed 1/28

7:50 am-6:54 pm

2 stops16h 04m

$665

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 2/18

1:30 pm-8:50 am

2 stops14h 20m

London City

Fri 2/27

7:50 am-4:54 pm

2 stops38h 04m

$666

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Fri 3/6

8:40 pm-4:40 pm

2 stops39h 00m

London City

Mon 3/16

9:15 am-9:58 pm

2 stops16h 43m

$742

BaltimoreLondon

BWI - LCY

BWILCY

Baltimore/Washington

Mon 3/30

10:53 am-7:15 am

2 stops15h 22m

London City

Mon 4/6

7:45 am-7:19 pm

2 stops16h 34m

$783

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Sun 12/28

1:44 pm-1:50 pm

2 stops19h 06m

London City

Wed 1/7

5:05 pm-9:30 pm

2 stops33h 25m

$784

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 day to depart on your flight to London City Airport?

The cheapest day to depart from Washington, D.C. to London City Airport is on a Sunday. Travelers who choose to depart for London City Airport on a Sunday will often find tickets for as low as $680. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London City Airport on Friday is $910.

What is the cheapest time of day to depart on your flight to London City Airport?

Our most recent data shows that the best time of day to fly to London City Airport is in the evening. Flights from Washington, D.C. to London City Airport during this time can be as low as $736. Flights in the afternoon are often more expensive with an average ticket price of $875.

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 25m

Direct flights

None
The fastest flight from Washington, D.C. to London City Airport takes 10h 25m
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 45m.

  • 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
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Wembley
Romford
Watford
Ilford
Cobham
Folkestone
Uxbridge
Stansted
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.

An easier way to manage your London City Airport trip

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