Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London to Washington, D.C. Dulles Intl Airport from £138

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Washington, D.C. Dulles Intl Airport departing on 14/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Deals available from 900+ travel sites.

'This year, momondo is the #1 place for airfares on the internet.'
Voted winner of Europe's Best Travel App 2023
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

Find the cheapest flights from London to Washington, D.C.

Cheap return flights

These are some of the best return flight deals from London to Washington, D.C. that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from London to Washington, D.C..

Cheap last-minute flights

Planning a quick getaway from London to Washington, D.C.? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Washington, D.C., so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from London to Washington, D.C.

Find recent round-trip train or bus tickets from London to Washington, D.C..

All round-trip flight deals to Washington, D.C.

The cheapest plane tickets to Washington, D.C. found on KAYAK recently.
07:35 - 18:00LTN-IAD
14h 25m1 stop
18:50 - 12:40IAD-LTN
12h 50m1 stop
Mon, 24 Mar - Sun, 30 Mar
11:00 - 17:00STN-IAD
11h 00m1 stop
19:10 - 10:00IAD-STN
10h 50m1 stop
£305PLAY
Find Deal
Wed, 5 Mar - Thu, 13 Mar
18:00 - 09:46LHR-IAD
20h 46m1 stop
18:25 - 06:40IAD-LHR
7h 15mdirect
£487Lufthansa
Find Deal
Sat, 25 Jan - Sat, 8 Feb
14:30 - 08:05LHR-IAD
21h 35m1 stop
08:35 - 06:20IAD-LHR
17h 45m1 stop
£488Lufthansa
Find Deal
Sat, 15 Mar - Sun, 23 Mar
08:50 - 15:40LHR-IAD
11h 50m1 stop
17:10 - 08:05IAD-LHR
9h 55m1 stop
£523Aer Lingus
Find Deal
Thu, 5 Dec - Mon, 9 Dec
07:50 - 15:40LHR-IAD
12h 50m1 stop
17:10 - 09:05IAD-LHR
10h 55m1 stop
£529Aer Lingus
Find Deal
Wed, 4 Dec - Wed, 11 Dec
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£584Virgin Atlantic
Find Deal
Wed, 15 Jan - Wed, 22 Jan
16:30 - 20:45LHR-IAD
8h 15mdirect
17:55 - 06:15IAD-LHR
7h 20mdirect
£586British Airways
Find Deal
Wed, 12 Mar - Wed, 7 May
10:00 - 15:45LCY-IAD
10h 45m1 stop
17:35 - 08:50IAD-LCY
10h 15m1 stop
£635Virgin Atlantic
Find Deal
Wed, 15 Jan - Wed, 22 Jan
09:10 - 15:40LCY-IAD
11h 30m1 stop
17:10 - 10:25IAD-LCY
12h 15m1 stop
£754British Airways
Find Deal
Thu, 9 Jan - Thu, 23 Jan
15:05 - 18:00LGW-IAD
30h 55m1 stop
Fri, 14 Mar
17:00 - 18:00LGW-IAD
29h 00m2 stops
Fri, 14 Mar
11:40 - 17:40STN-IAD
11h 00m1 stop
£243PLAY
Find Deal
Mon, 31 Mar
11:00 - 18:00STN-IAD
11h 00m1 stop
£258PLAY
Find Deal
Fri, 14 Mar
08:40 - 15:45LHR-IAD
12h 05m1 stop
£440Virgin Atlantic
Find Deal
Mon, 25 Nov
09:20 - 15:45LCY-IAD
11h 25m1 stop
£631Virgin Atlantic
Find Deal
Fri, 29 Nov
06:55 - 15:40LCY-IAD
13h 45m2 stops
£739British Airways
Find Deal
Tue, 4 Feb
10:00 - 20:20LCY-IAD
15h 20m1 stop
£747Lufthansa
Find Deal
Wed, 1 Jan
20:30 - 19:15LCY-IAD
27h 45m2 stops
£755British Airways
Find Deal
Wed, 4 Dec
18:15 - 15:55LCY-IAD
26h 40m2 stops
£761Lufthansa
Find Deal
Tue, 7 Jan
06:00 - 17:00LTN-IAD
16h 00m1 stop
18:10 - 13:55IAD-LTN
14h 45m1 stop
Sun, 24 Nov - Mon, 2 Dec
11:00 - 17:00STN-IAD
11h 00m1 stop
18:10 - 10:00IAD-STN
10h 50m1 stop
£390PLAY
Find Deal
Tue, 26 Nov - Tue, 3 Dec
07:50 - 15:40LHR-IAD
12h 50m1 stop
21:15 - 11:25IAD-LHR
9h 10m1 stop
£560Aer Lingus
Find Deal
Sun, 24 Nov - Tue, 26 Nov
07:50 - 15:40LHR-IAD
12h 50m1 stop
17:10 - 08:05IAD-LHR
9h 55m1 stop
£564Aer Lingus
Find Deal
Sun, 24 Nov - Sun, 1 Dec
12:05 - 15:40LHR-IAD
8h 35mdirect
17:56 - 07:10IAD-LHR
32h 14m1 stop
£595Lufthansa
Find Deal
Fri, 22 Nov - Sat, 7 Dec
16:00 - 22:48LHR-IAD
11h 48m1 stop
17:56 - 07:10IAD-LHR
32h 14m1 stop
£600Lufthansa
Find Deal
Fri, 22 Nov - Sat, 7 Dec
06:30 - 15:45LHR-IAD
14h 15m1 stop
18:45 - 07:15IAD-LHR
7h 30mdirect
£789Virgin Atlantic
Find Deal
Sun, 24 Nov - Mon, 13 Jan
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£796Virgin Atlantic
Find Deal
Sun, 24 Nov - Mon, 13 Jan
11:25 - 19:15LCY-IAD
12h 50m1 stop
21:15 - 12:40IAD-LCY
10h 25m1 stop
£1,085British Airways
Find Deal
Sat, 23 Nov - Wed, 4 Dec
12:45 - 19:15LCY-IAD
11h 30m1 stop
17:10 - 08:35IAD-LCY
10h 25m1 stop
£1,291British Airways
Find Deal
Sun, 24 Nov - Mon, 13 Jan
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
Mon, 13 Jan - Tue, 21 Jan
12:25 - 17:05LHR-IAD
8h 40mdirect
21:50 - 10:05IAD-LHR
7h 15mdirect
£564Delta
Find Deal
Mon, 24 Mar - Wed, 2 Apr
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£584Virgin Atlantic
Find Deal
Wed, 15 Jan - Wed, 22 Jan
16:20 - 20:15LHR-IAD
8h 55mdirect
22:15 - 10:50IAD-LHR
7h 35mdirect
£605Lufthansa
Find Deal
Fri, 31 Jan - Mon, 3 Feb
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£611British Airways
Find Deal
Mon, 27 Jan - Thu, 6 Feb
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£616British Airways
Find Deal
Wed, 8 Jan - Wed, 29 Jan
16:20 - 20:15LHR-IAD
8h 55mdirect
18:25 - 06:40IAD-LHR
7h 15mdirect
£618Lufthansa
Find Deal
Mon, 13 Jan - Mon, 20 Jan
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£628Finnair
Find Deal
Mon, 27 Jan - Tue, 11 Feb
12:25 - 17:05LHR-IAD
8h 40mdirect
22:00 - 10:30IAD-LHR
7h 30mdirect
£628Virgin Atlantic
Find Deal
Tue, 25 Mar - Sat, 29 Mar
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£657Finnair
Find Deal
Sun, 12 Jan - Mon, 27 Jan

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

Our best SWISS deals on London to Washington, D.C. Dulles Intl Airport flight tickets
SWISS
15 Jan
LCY19:10London City
26h 15m
1 stop
IAD16:25Washington, D.C. Dulles Intl
22 Jan
IAD17:30Washington, D.C. Dulles Intl
14h 20m
1 stop
LCY12:50London City
SWISS
3 Dec
LCY09:15London City
12h 10m
1 stop
IAD16:25Washington, D.C. Dulles Intl
10 Dec
IAD20:45Washington, D.C. Dulles Intl
11h 05m
1 stop
LCY12:50London City

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

Our best KLM deals on London to Washington, D.C. Dulles Intl Airport flight tickets
KLM
3 Dec
LCY08:40London City
12h 05m
1 stop
IAD15:45Washington, D.C. Dulles Intl
8 Dec
IAD17:35Washington, D.C. Dulles Intl
9h 35m
1 stop
LCY08:10London City
KLM
4 Dec
LHR12:25London Heathrow
8h 40m
IAD16:05Washington, D.C. Dulles Intl
7 Jan
IAD18:25Washington, D.C. Dulles Intl
7h 30m
LHR06:55London Heathrow
KLM
4 Dec
LCY09:20London City
11h 25m
1 stop
IAD15:45Washington, D.C. Dulles Intl
11 Dec
IAD17:35Washington, D.C. Dulles Intl
9h 35m
1 stop
LCY08:10London City

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London to Washington, D.C. Dulles Intl 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 month to fly from London to Washington, D.C. Dulles Intl Airport?

January. The cheapest time of year to fly to Washington, D.C. Dulles Intl Airport from London is January. The most expensive is June.

What is the cheapest day to depart London for Washington, D.C. Dulles Intl Airport?

Tuesday. The cheapest day of the week is usually Tuesday. The most expensive is usually Sunday.

When is the cheapest time to fly from London to Washington, D.C. Dulles Intl Airport?

In the evening. London to Washington, D.C. Dulles Intl Airport flights are approximately 19% more expensive in the afternoon than in the evening

How far in advance should you book London to Washington, D.C. Dulles Intl Airport flights?

56 days before. The cheapest time to buy a flight from London to Washington, D.C. Dulles Intl Airport is approximately 56 days to departure

What cabin class options are available on London to Washington, D.C. Dulles Intl Airport flights?

There are 2 cabin classes available to choose from on London to Washington, D.C. Dulles Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 75% on your flight if you consider stops on a London to Washington, D.C. Dulles Intl Airport flight.

How have London to Washington, D.C. Dulles Intl Airport flight prices changed over time?

As of November 2024, prices for London to Washington, D.C. Dulles Intl Airport flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from London to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Washington, D.C. Dulles Intl Airport (LON to IAD) flight deals and tips

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

Best price found

£138

Fastest flight time

8h 15m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from London in the past 72 hours is £138. The best return flight deal from London to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is £293.
The fastest flight from London to Washington, D.C. Dulles Intl Airport takes 8h 15m
Direct flights go from London to Washington, D.C. Dulles Intl Airport every day.

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

    There are 3677.3 mi between London and Washington, D.C. Dulles Intl. Typically, this will take 8h 15m by plane in normal conditions.

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

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

  • How many operators does momondo search for flights from London to Washington, D.C. Dulles Intl Airport?

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

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from London to Washington, D.C. Dulles Intl Airport?

  • What is the most popular airline from London to Washington, D.C. Dulles Intl Airport?


Best airlines flying from London to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from London to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom £264Free CancellationRating
7.1
88 reviews
Search PLAY flights
DeltaPriceFrom £338Free CancellationRating
8.0
8,756 reviews
Search Delta flights
IcelandairPriceFrom £372Free CancellationRating
7.2
555 reviews
Search Icelandair flights
Aer LingusPriceFrom £393Free CancellationRating
7.1
1,089 reviews
Search Aer Lingus flights
TAP AIR PORTUGALPriceFrom £401Free CancellationRating
7.1
1,892 reviews
Search TAP AIR PORTUGAL flights
Brussels AirlinesPriceFrom £404Free CancellationRating
7.4
367 reviews
Search Brussels Airlines flights
Scandinavian AirlinesPriceFrom £416Free CancellationRating
7.3
1,301 reviews
Search Scandinavian Airlines flights
American AirlinesPriceFrom £419Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Air CanadaPriceFrom £432Free CancellationRating
7.0
8,237 reviews
Search Air Canada flights
British AirwaysPriceFrom £448Free CancellationRating
6.6
6,837 reviews
Search British Airways flights
  • Delta Flights From London to Washington, D.C. Dulles Intl Airport

    The lowest priced Delta flight from London to Washington, D.C. Dulles Intl Airport from the last 72 hours was £428. Generally, Delta has 3 flights on this route every week with an average price of £840. Delta is rated 8.0/10 by our users.

  • KLM Flights From London to Washington, D.C. Dulles Intl Airport

    Across 1,350 KLM reviews on momondo, the average score is 7.8/10. KLM flies from London to Washington, D.C. Dulles Intl Airport about 3 times each week, with ticket deals ranging from £662 to £901. Price data is based on momondo searches in the last 72 hours.


Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Washington, D.C. . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from London with this policy.

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

Once you have performed a search for London to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from London to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.


An easier way to manage your Washington, D.C. Dulles Intl Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Tue 26/11
Tue 3/12
Email me momondo's favourite deals

Find better results for your trip to Washington, D.C.