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Cheap flights from Washington, D.C. to London from $317

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 11/24. 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
$541SWISS
Find Deal
Tue, Sep 23 - Tue, Sep 30
SWISS Logo
8:45 pm - 8:50 amIAD-LCY
31h 05m1 stop
SWISS Logo
9:25 am - 4:15 pmLCY-IAD
11h 50m1 stop
$542SWISS
Find Deal
Wed, Sep 10 - Wed, Sep 17
Delta Logo
5:25 pm - 8:10 amIAD-LCY
9h 45m1 stop
Delta Logo
9:20 am - 3:35 pmLCY-IAD
11h 15m1 stop
$565Delta
Find Deal
Tue, Sep 2 - Thu, Oct 23
KLM Logo
5:25 pm - 8:50 amIAD-LCY
10h 25m1 stop
KLM Logo
8:40 am - 3:35 pmLCY-IAD
11h 55m1 stop
$566KLM
Find Deal
Sun, Sep 7 - Tue, Sep 16
Virgin Atlantic Logo
12:27 pm - 7:15 amIAD-LCY
13h 48m2 stops
Virgin Atlantic Logo
10:00 am - 3:35 pmLCY-IAD
10h 35m1 stop
$570Virgin Atlantic
Find Deal
Mon, Oct 6 - Tue, Oct 14
Virgin Atlantic Logo
9:50 am - 7:15 amIAD-LCY
16h 25m2 stops
Virgin Atlantic Logo
7:45 am - 11:00 pmLCY-IAD
19h 15m2 stops
$580Virgin Atlantic
Find Deal
Wed, Oct 22 - Thu, Oct 30
KLM Logo
5:25 pm - 8:10 amIAD-LCY
9h 45m1 stop
KLM Logo
10:00 am - 3:35 pmLCY-IAD
10h 35m1 stop
$587KLM
Find Deal
Sun, Sep 7 - Tue, Sep 16
Logo
3:25 pm - 9:20 amIAD-LCY
12h 55m1 stop
Logo
7:20 pm - 4:15 pmLCY-IAD
25h 55m1 stop
$610
Find Deal
Sun, Aug 24 - Sun, Aug 31
Delta Logo
5:25 pm - 8:10 amIAD-LCY
9h 45m1 stop
Delta Logo
10:00 am - 3:35 pmLCY-IAD
10h 35m1 stop
$615Delta
Find Deal
Mon, Sep 1 - Mon, Sep 8
Logo
8:45 pm - 12:30 pmIAD-LCY
10h 45m1 stop
Logo
8:55 am - 3:50 pmLCY-IAD
11h 55m1 stop
$664
Find Deal
Wed, Sep 3 - Fri, Oct 24

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
Sep 2
IAD5:25 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
LCY8:10 amLondon City
Oct 23
LCY9:20 amLondon City
11h 15m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$565
Find similar
Delta
Sep 1
IAD5:25 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
LCY8:10 amLondon City
Sep 8
LCY10:00 amLondon City
10h 35m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$615
Find similar
Delta
Sep 4
IAD5:25 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
LCY8:10 amLondon City
Oct 25
LCY10:00 amLondon City
10h 35m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$665
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
Sep 23
IAD8:45 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
LCY12:30 pmLondon City
Sep 30
LCY9:25 amLondon City
11h 50m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
$541
Find similar
SWISS
Sep 10
IAD8:45 pmWashington, D.C. Dulles Intl
31h 05m
1 stop
LCY8:50 amLondon City
Sep 17
LCY9:25 amLondon City
11h 50m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
$542
Find similar
SWISS
Sep 3
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
$543
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 August 14, 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

Tue 9/23

8:45 pm-12:30 pm

1 stop10h 45m

London City

Tue 9/30

9:25 am-4:15 pm

1 stop11h 50m

$541

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Wed 9/10

8:45 pm-8:50 am

1 stop31h 05m

London City

Wed 9/17

9:25 am-4:15 pm

1 stop11h 50m

$542

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 9/2

5:25 pm-8:10 am

1 stop9h 45m

London City

Thu 10/23

9:20 am-3:35 pm

1 stop11h 15m

$565

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 9/7

5:25 pm-8:50 am

1 stop10h 25m

London City

Tue 9/16

8:40 am-3:35 pm

1 stop11h 55m

$566

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 10/6

12:27 pm-7:15 am

2 stops13h 48m

London City

Tue 10/14

10:00 am-3:35 pm

1 stop10h 35m

$570

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Wed 10/22

9:50 am-7:15 am

2 stops16h 25m

London City

Thu 10/30

7:45 am-11:00 pm

2 stops19h 15m

$580

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 9/7

5:25 pm-8:10 am

1 stop9h 45m

London City

Tue 9/16

10:00 am-3:35 pm

1 stop10h 35m

$587

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 8/24

3:25 pm-9:20 am

1 stop12h 55m

London City

Sun 8/31

7:20 pm-4:15 pm

1 stop25h 55m

$610

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 9/1

5:25 pm-8:10 am

1 stop9h 45m

London City

Mon 9/8

10:00 am-3:35 pm

1 stop10h 35m

$615

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Wed 9/3

8:45 pm-12:30 pm

1 stop10h 45m

London City

Fri 10/24

8:55 am-3:50 pm

1 stop11h 55m

$664

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

Best Price Found

$317

Fastest flight time

9h 45m

Direct flights

None
The best one-way flight to London City Airport from Washington, D.C. in the past 72 hours is $317. The best round-trip flight deal from Washington, D.C. to London City Airport found on momondo in the last 72 hours is $541.
The fastest flight from Washington, D.C. to London City Airport takes 9h 45m
There are no direct flights from Washington, D.C. to London City Airport. Popular non-direct routes for this connection are Baltimore/Washington Airport - London City Airport and Washington, D.C. Dulles Intl Airport - 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
Hounslow
Gatwick
Dover
Slough
Luton
Guildford
Milton Keynes
Dartford
Crawley
Hayes
Chelmsford
Stansted
Brentwood
Ilford
Colchester
Folkestone
Watford
Richmond
Canterbury
Wembley

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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