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Cheap flights from Washington, D.C. Dulles Intl Airport to London from $334

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. Dulles Intl Airport to London departing on 11/17. 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. Dulles Intl Airport to London (IAD-LCY)

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
$517SWISS
Find Deal
Tue, Aug 26 - Wed, Sep 3
Virgin Atlantic Logo
5:25 pm - 8:50 amIAD-LCY
10h 25m1 stop
Virgin Atlantic Logo
10:00 am - 3:35 pmLCY-IAD
10h 35m1 stop
$531Virgin Atlantic
Find Deal
Sun, Sep 21 - Tue, Sep 30
SWISS Logo
8:45 pm - 12:30 pmIAD-LCY
10h 45m1 stop
SWISS Logo
9:25 am - 4:15 pmLCY-IAD
11h 50m1 stop
$538SWISS
Find Deal
Mon, Sep 8 - Tue, Sep 23
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 - Wed, Oct 22
Delta Logo
8:23 pm - 8:10 amIAD-LCY
30h 47m2 stops
Delta Logo
9:20 am - 4:05 pmLCY-IAD
11h 45m1 stop
$575Delta
Find Deal
Tue, Sep 2 - Thu, Dec 4
Logo
8:45 pm - 12:30 pmIAD-LCY
10h 45m1 stop
Logo
8:55 am - 3:50 pmLCY-IAD
11h 55m1 stop
$585
Find Deal
Tue, Sep 23 - Fri, Oct 17
KLM Logo
5:25 pm - 8:50 amIAD-LCY
10h 25m1 stop
KLM Logo
8:40 am - 3:35 pmLCY-IAD
11h 55m1 stop
$598KLM
Find Deal
Wed, Sep 17 - Wed, Sep 24
Logo
3:25 pm - 9:20 amIAD-LCY
12h 55m1 stop
Logo
7:20 pm - 4:15 pmLCY-IAD
25h 55m1 stop
$609
Find Deal
Sun, Aug 24 - Sun, Aug 31
KLM Logo
5:25 pm - 9:30 amIAD-LCY
11h 05m1 stop
KLM Logo
8:40 am - 3:35 pmLCY-IAD
11h 55m1 stop
$615KLM
Find Deal
Thu, Sep 4 - Wed, Oct 22
Lufthansa Logo
3:25 pm - 8:10 amIAD-LCY
11h 45m1 stop
Lufthansa Logo
7:10 pm - 1:30 pmLCY-IAD
23h 20m1 stop
$626Lufthansa
Find Deal
Mon, Aug 25 - Mon, Sep 1

SWISS flights from Washington, D.C. Dulles Intl Airport to London City Airport

Our best SWISS deals on Washington, D.C. Dulles Intl Airport to London City Airport flight tickets
SWISS
Aug 26
IAD8:45 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
LCY12:30 pmLondon City
Sep 3
LCY9:25 amLondon City
11h 50m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
$517
Find similar
SWISS
Aug 17
IAD8:45 pmWashington, D.C. Dulles Intl
15h 45m
1 stop
LCY5:30 pmLondon City
Aug 26
LCY7:20 pmLondon City
25h 55m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
$537
Find similar
SWISS
Sep 8
IAD8:45 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
LCY12:30 pmLondon City
Sep 23
LCY9:25 amLondon City
11h 50m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
$538
Find similar

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

Our best KLM deals on Washington, D.C. Dulles Intl Airport to London City Airport flight tickets
KLM
Aug 18
IAD5:25 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LCY8:50 amLondon City
Sep 30
LCY8:40 amLondon City
11h 55m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$564
Find similar
KLM
Sep 17
IAD5:25 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LCY8:50 amLondon City
Sep 24
LCY8:40 amLondon City
11h 55m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$598
Find similar
KLM
Aug 21
IAD5:25 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LCY8:50 amLondon City
Aug 27
LCY9:20 amLondon City
11h 15m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$615
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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 8/26

8:45 pm-12:30 pm

1 stop10h 45m

London City

Wed 9/3

9:25 am-4:15 pm

1 stop11h 50m

$517

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 9/21

5:25 pm-8:50 am

1 stop10h 25m

London City

Tue 9/30

10:00 am-3:35 pm

1 stop10h 35m

$531

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 9/8

8:45 pm-12:30 pm

1 stop10h 45m

London City

Tue 9/23

9:25 am-4:15 pm

1 stop11h 50m

$538

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

Wed 10/22

9:20 am-3:35 pm

1 stop11h 15m

$565

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Tue 9/2

8:23 pm-8:10 am

2 stops30h 47m

London City

Thu 12/4

9:20 am-4:05 pm

1 stop11h 45m

$575

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

Fri 10/17

8:55 am-3:50 pm

1 stop11h 55m

$585

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Wed 9/17

5:25 pm-8:50 am

1 stop10h 25m

London City

Wed 9/24

8:40 am-3:35 pm

1 stop11h 55m

$598

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

$609

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Thu 9/4

5:25 pm-9:30 am

1 stop11h 05m

London City

Wed 10/22

8:40 am-3:35 pm

1 stop11h 55m

$615

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Mon 8/25

3:25 pm-8:10 am

1 stop11h 45m

London City

Mon 9/1

7:10 pm-1:30 pm

1 stop23h 20m

$626

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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to London City Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to London City Airport (IAD to LCY) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to London City Airport

Best Price Found

$334

Fastest flight time

9h 45m

Direct flights

None
The best one-way flight to London City Airport from Washington, D.C. Dulles Intl Airport in the past 72 hours is $334. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to London City Airport found on momondo in the last 72 hours is $517.
The fastest flight from Washington, D.C. Dulles Intl Airport to London City Airport takes 9h 45m
There are no direct flights from Washington, D.C. Dulles Intl Airport to London City Airport. Popular non-direct route for this connection is Washington, D.C. Dulles Intl Airport - London City Airport.
Search flight deals

  • How far is Washington, D.C. Dulles Intl to London City by plane?

    London City is 3684.3 mi away from Washington, D.C. Dulles Intl. 9h 45m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to London City Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to London City Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to London City Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to London City Airport.

  • What documentation or ID do you need to fly to London City Airport?

    The travel and health documents you'll need for your trip to London City Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London City Airport. It is always advisable to seek advice from your airline or a trusted 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
Slough
Luton
Guildford
Milton Keynes
Dartford
Crawley
Hayes
Chelmsford
Stansted
Ilford
Brentwood
Colchester
Folkestone
Watford
Canterbury
Richmond
Wembley

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to London for you.

Can I find flights from Washington, D.C. to London with flexible booking policies on momondo?

All flight searches from Washington, D.C. to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to London?

momondo provides multiple filters to help you find the best flight to London from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Washington, D.C. and alert you when they change.

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