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Cheap flights from Washington, D.C. to London from $319

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 10/27. 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

SWISS Logo
8:45 pm - 12:30 pmIAD-LCY
10h 45m1 stop
SWISS Logo
9:25 am - 4:15 pmLCY-IAD
11h 50m1 stop
$601SWISS
Find Deal
Wed, Oct 1 - Wed, Oct 15
SWISS Logo
8:45 pm - 12:30 pmIAD-LCY
10h 45m1 stop
SWISS Logo
9:25 am - 4:15 pmLCY-IAD
11h 50m1 stop
$602SWISS
Find Deal
Wed, Oct 1 - Tue, Oct 7
Multiple Airlines Logo
11:05 am - 8:35 amDCA-LCY
16h 30m2 stops
Multiple Airlines Logo
9:15 am - 9:56 pmLCY-DCA
17h 41m2 stops
$615Multiple Airlines
Find Deal
Wed, Nov 19 - Tue, Nov 25
KLM Logo
5:25 pm - 8:50 amIAD-LCY
10h 25m1 stop
KLM Logo
10:00 am - 3:35 pmLCY-IAD
10h 35m1 stop
$619KLM
Find Deal
Sun, Sep 28 - Tue, Oct 7
Multiple Airlines Logo
8:45 pm - 12:30 pmIAD-LCY
10h 45m1 stop
Multiple Airlines Logo
8:55 am - 3:50 pmLCY-IAD
11h 55m1 stop
$626Multiple Airlines
Find Deal
Mon, Sep 29 - Fri, Oct 10
KLM Logo
6:05 pm - 8:50 amIAD-LCY
9h 45m1 stop
KLM Logo
10:00 am - 4:05 pmLCY-IAD
11h 05m1 stop
$638KLM
Find Deal
Mon, Nov 3 - Thu, Nov 13
Delta Logo
5:25 pm - 8:50 amIAD-LCY
10h 25m1 stop
Delta Logo
9:20 am - 3:35 pmLCY-IAD
11h 15m1 stop
$639Delta
Find Deal
Sun, Sep 28 - Tue, Oct 7
Delta Logo
12:08 pm - 7:15 amIAD-LCY
38h 07m2 stops
Delta Logo
10:00 am - 3:35 pmLCY-IAD
10h 35m1 stop
$642Delta
Find Deal
Sun, Sep 28 - Wed, Oct 15
Virgin Atlantic Logo
1:00 pm - 8:10 amIAD-LCY
15h 10m2 stops
Virgin Atlantic Logo
10:00 am - 4:05 pmLCY-IAD
11h 05m1 stop
$643Virgin Atlantic
Find Deal
Tue, Oct 28 - Tue, Nov 4
Virgin Atlantic Logo
5:25 pm - 8:50 amIAD-LCY
10h 25m1 stop
Virgin Atlantic Logo
8:40 am - 7:18 pmLCY-IAD
15h 38m2 stops
$648Virgin Atlantic
Find Deal
Sun, Sep 28 - Tue, Oct 7

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
Sep 28
IAD5:25 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LCY8:50 amLondon City
Oct 7
LCY10:00 amLondon City
10h 35m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$619
Find similar
KLM
Sep 24
IAD5:25 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
LCY8:10 amLondon City
Nov 13
LCY10:00 amLondon City
11h 05m
1 stop
IAD4:05 pmWashington, D.C. Dulles Intl
$638
Find similar
KLM
Oct 8
IAD5:25 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
LCY8:10 amLondon City
Oct 29
LCY9:20 amLondon City
11h 45m
1 stop
IAD5:05 pmWashington, D.C. Dulles Intl
$641
Find similar

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
Oct 1
IAD8:45 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
LCY12:30 pmLondon City
Oct 8
LCY9:25 amLondon City
11h 50m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
$601
Find similar
SWISS
Sep 29
IAD8:45 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
LCY12:30 pmLondon City
Oct 7
LCY9:25 amLondon City
11h 50m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
$602
Find similar
SWISS
Sep 24
IAD8:45 pmWashington, D.C. Dulles Intl
15h 30m
1 stop
LCY5:15 pmLondon City
Oct 3
LCY9:25 amLondon City
11h 50m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
$606
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 September 17, 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

Wed 10/1

8:45 pm-12:30 pm

1 stop10h 45m

London City

Wed 10/15

9:25 am-4:15 pm

1 stop11h 50m

$601

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Wed 10/1

8:45 pm-12:30 pm

1 stop10h 45m

London City

Tue 10/7

9:25 am-4:15 pm

1 stop11h 50m

$602

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 11/19

11:05 am-8:35 am

2 stops16h 30m

London City

Tue 11/25

9:15 am-9:56 pm

2 stops17h 41m

$615

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 9/28

5:25 pm-8:50 am

1 stop10h 25m

London City

Tue 10/7

10:00 am-3:35 pm

1 stop10h 35m

$619

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 9/29

8:45 pm-12:30 pm

1 stop10h 45m

London City

Fri 10/10

8:55 am-3:50 pm

1 stop11h 55m

$626

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 11/3

6:05 pm-8:50 am

1 stop9h 45m

London City

Thu 11/13

10:00 am-4:05 pm

1 stop11h 05m

$638

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 9/28

5:25 pm-8:50 am

1 stop10h 25m

London City

Tue 10/7

9:20 am-3:35 pm

1 stop11h 15m

$639

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 9/28

12:08 pm-7:15 am

2 stops38h 07m

London City

Wed 10/15

10:00 am-3:35 pm

1 stop10h 35m

$642

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 10/28

1:00 pm-8:10 am

2 stops15h 10m

London City

Tue 11/4

10:00 am-4:05 pm

1 stop11h 05m

$643

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 9/28

5:25 pm-8:50 am

1 stop10h 25m

London City

Tue 10/7

8:40 am-7:18 pm

2 stops15h 38m

$648

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

Direct flights

None
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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  • 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
Dover
Luton
Slough
Milton Keynes
Hayes
Guildford
Dartford
Crawley
Stansted
Chelmsford
Brentwood
Ilford
Folkestone
Colchester
Watford
Wembley
Richmond
Croydon

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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