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Cheap flights from Washington, D.C. Dulles Intl Airport to London from $192

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 2/10. 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

Cheap round-trip flights

These are some of the best round-trip flight deals from Washington, D.C. Dulles Intl Airport to London 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 Washington, D.C. Dulles Intl Airport to London.

Cheap last minute flights

Planning a quick getaway from Washington, D.C. Dulles Intl Airport to London? 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 London, so you can enjoy a seamless trip without layovers.

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

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

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
7:40 pm - 7:30 pmIAD-LHR
18h 50m1 stop
12:15 pm - 6:25 pmLHR-IAD
11h 10m1 stop
$459Icelandair
Find Deal
Sun, Jan 12 - Tue, Jan 21
7:40 pm - 10:50 amIAD-LHR
10h 10m1 stop
8:40 pm - 6:25 pmLHR-IAD
26h 45m1 stop
$463Icelandair
Find Deal
Fri, Jan 31 - Fri, Feb 7
10:30 pm - 10:15 pmIAD-STN
18h 45m2 stops
7:20 pm - 3:00 pmSTN-IAD
24h 40m2 stops
Wed, Jan 22 - Wed, Jan 29
5:35 pm - 6:25 pmIAD-LCY
19h 50m1 stop
5:05 pm - 3:45 pmLCY-IAD
27h 40m1 stop
$665Virgin Atlantic
Find Deal
Mon, Jan 20 - Mon, Jan 27
5:35 pm - 8:50 amIAD-LCY
10h 15m1 stop
8:05 pm - 4:45 pmLCY-IAD
24h 40m1 stop
$666Virgin Atlantic
Find Deal
Sun, Feb 9 - Mon, Mar 10
5:35 pm - 8:10 amIAD-LCY
9h 35m1 stop
9:20 am - 3:45 pmLCY-IAD
11h 25m1 stop
$700Delta
Find Deal
Wed, Feb 26 - Wed, Mar 5
6:50 pm - 9:25 amIAD-LCY
10h 35m1 stop
9:15 am - 3:50 pmLCY-IAD
11h 35m1 stop
$702Lufthansa
Find Deal
Wed, Mar 12 - Wed, Apr 2
6:10 pm - 4:25 pmIAD-LCY
17h 15m1 stop
9:15 am - 3:50 pmLCY-IAD
11h 35m1 stop
$719Lufthansa
Find Deal
Wed, Apr 23 - Wed, Apr 30
5:35 pm - 8:10 amIAD-LCY
9h 35m1 stop
8:40 am - 3:45 pmLCY-IAD
12h 05m1 stop
$750Delta
Find Deal
Fri, Jan 17 - Fri, Jan 24
5:10 pm - 8:35 amIAD-LCY
10h 25m1 stop
6:50 am - 3:40 pmLCY-IAD
13h 50m1 stop
$848British Airways
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Wed, Jan 29 - Thu, Feb 13
7:40 pm - 7:30 pmIAD-LHR
18h 50m1 stop
$192Icelandair
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Mon, Feb 10
7:40 pm - 10:55 amIAD-LGW
10h 15m1 stop
$194Icelandair
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Mon, Jan 13
7:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$377Virgin Atlantic
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Tue, Mar 25
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$380British Airways
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Mon, Feb 3
5:50 pm - 6:15 amIAD-LHR
7h 25mnonstop
$386British Airways
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Tue, Apr 15
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$389Virgin Atlantic
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Sun, Jan 26
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$395Iberia
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Tue, Feb 18
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$397Iberia
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Sun, Feb 16
10:30 pm - 11:05 amIAD-LHR
7h 35mnonstop
$404United Airlines
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Wed, Jan 15
5:37 pm - 8:25 amIAD-LHR
9h 48m1 stop
$408United Airlines
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Wed, Jan 1
10:20 pm - 7:55 amIAD-LHR
28h 35m1 stop
3:00 pm - 3:13 pmLHR-IAD
29h 13m1 stop
$930United Airlines
Find Deal
Mon, Dec 23 - Fri, Jan 10
10:20 pm - 7:55 amIAD-LHR
28h 35m1 stop
9:00 am - 9:46 amLHR-IAD
29h 46m2 stops
$935United Airlines
Find Deal
Mon, Dec 23 - Fri, Jan 10
8:10 pm - 9:15 amIAD-LHR
32h 05m1 stop
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$974British Airways
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Mon, Dec 23 - Fri, Jan 24
8:10 pm - 9:15 amIAD-LHR
32h 05m1 stop
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$978British Airways
Find Deal
Mon, Dec 23 - Fri, Jan 10
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$1,484Iberia
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Thu, Dec 19 - Thu, Dec 26
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$1,562Iberia
Find Deal
Sun, Dec 22 - Sat, Jan 25
7:40 pm - 10:55 amIAD-LGW
10h 15m1 stop
11:55 am - 6:25 pmLGW-IAD
11h 30m1 stop
$1,872Icelandair
Find Deal
Fri, Dec 20 - Sun, Dec 29
7:40 pm - 10:55 amIAD-LGW
10h 15m1 stop
11:55 am - 6:25 pmLGW-IAD
11h 30m1 stop
$1,917Icelandair
Find Deal
Fri, Dec 20 - Mon, Dec 23
5:35 pm - 8:10 amIAD-LCY
9h 35m1 stop
8:05 pm - 3:45 pmLCY-IAD
24h 40m1 stop
$1,972Virgin Atlantic
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Sun, Dec 22 - Sun, Dec 29
5:35 pm - 7:35 pmIAD-LCY
21h 00m1 stop
8:40 am - 3:45 pmLCY-IAD
12h 05m1 stop
$2,072Virgin Atlantic
Find Deal
Sat, Dec 21 - Mon, Dec 30
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
4:30 pm - 8:45 pmLHR-IAD
8h 15mnonstop
$589Iberia
Find Deal
Wed, Mar 5 - Wed, Mar 12
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
12:10 pm - 4:35 pmLHR-IAD
8h 25mnonstop
$590Iberia
Find Deal
Wed, Mar 5 - Wed, Mar 12
10:40 pm - 11:05 amIAD-LHR
7h 25mnonstop
5:00 pm - 8:10 pmLHR-IAD
8h 10mnonstop
$591Iberia
Find Deal
Wed, Apr 23 - Wed, Apr 30
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
$609Virgin Atlantic
Find Deal
Sun, Jan 12 - Tue, Jan 21
10:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
12:10 pm - 4:35 pmLHR-IAD
8h 25mnonstop
$626British Airways
Find Deal
Wed, Mar 12 - Thu, Mar 20
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
$627Virgin Atlantic
Find Deal
Mon, Jan 13 - Wed, Jan 22
7:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
5:00 pm - 8:10 pmLHR-IAD
8h 10mnonstop
$629British Airways
Find Deal
Tue, Mar 25 - Thu, Apr 3
6:30 pm - 6:55 amIAD-LHR
7h 25mnonstop
4:40 pm - 7:50 pmLHR-IAD
8h 10mnonstop
$663United Airlines
Find Deal
Sun, Apr 20 - Tue, Apr 29
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
$699United Airlines
Find Deal
Tue, Dec 31 - Wed, Jan 8
10:40 pm - 11:05 amIAD-LHR
7h 25mnonstop
5:05 pm - 8:15 pmLHR-IAD
8h 10mnonstop
$779American Airlines
Find Deal
Tue, Apr 15 - Sun, Apr 20

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

Our best Icelandair deals on Washington, D.C. Dulles Intl Airport to London flight tickets
Icelandair
Jan 12
IAD7:40 pmWashington, D.C. Dulles Intl
18h 50m
1 stop
LHR7:30 pmLondon Heathrow
Jan 21
LHR12:15 pmLondon Heathrow
11h 10m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Icelandair
Jan 31
IAD7:40 pmWashington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50 amLondon Heathrow
Feb 7
LHR8:40 pmLondon Heathrow
26h 45m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Icelandair
Jan 31
IAD7:40 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55 amLondon Gatwick
Feb 7
LGW11:55 amLondon Gatwick
11h 30m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl

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

Our best KLM deals on Washington, D.C. Dulles Intl Airport to London flight tickets
KLM
Jan 12
IAD6:25 pmWashington, D.C. Dulles Intl
7h 30m
LHR6:55 amLondon Heathrow
Jan 21
LHR8:40 amLondon Heathrow
12h 05m
1 stop
IAD3:45 pmWashington, D.C. Dulles Intl
KLM
Jan 15
IAD5:35 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LCY8:50 amLondon City
Jan 22
LCY9:20 amLondon City
11h 25m
1 stop
IAD3:45 pmWashington, D.C. Dulles Intl
KLM
Apr 22
IAD5:25 pmWashington, D.C. Dulles Intl
9h 45m
1 stop
LCY8:10 amLondon City
May 1
LCY10:00 amLondon City
10h 35m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl

See travel insights to London from

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

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 to London?

The cheapest month to fly to London from Washington, D.C. Dulles Intl Airport is in January. Flight prices, which tend to average around $640, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $644.

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $708. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $770. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Washington, D.C. Dulles Intl Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $700 when looking at flights departing in the afternoon. Flights to London are more costly at noon, with an average ticket price of $885. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington, D.C. Dulles Intl to London flight route?

Fly from Washington, D.C. Dulles Intl to London Heathrow for the best Washington, D.C. Dulles Intl - London flight prices

How far in advance should I book a flight to London?

Most flyers found that booking tickets 30 days in advance of their planned departure date is the best time to get cheap flights to London. During this timeframe, flight prices are around $786. Don’t hesitate to check prices now though because momondo users recently found tickets for as low as $704.

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

There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl to London 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 Washington, D.C. Dulles Intl Airport to London flights?

You could potentially save up to 49% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to London flight.

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

As of December 2024, prices for Washington, D.C. Dulles Intl Airport to London flights are approximately 39% more expensive when compared to flights at the same time last year.

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

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

Best Price Found

$192

Fastest flight time

7h 10m

Direct flights

Every day

Airports in London

4 airports
The best one-way flight to London from Washington, D.C. Dulles Intl Airport in the past 72 hours is $192. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to London found on momondo in the last 72 hours is $459.
The fastest flight from Washington, D.C. Dulles Intl Airport to London takes 7h 10m
Direct flights go from Washington, D.C. Dulles Intl Airport to London every day.
There are 4 airports near London: London City (LCY), London Heathrow (LHR), London Stansted (STN), London Gatwick (LGW)

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

    London is 3677.3 mi away from Washington, D.C. Dulles Intl. By plane, this route typically takes 7h 30m.

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

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

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

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

    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.

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

    The required travel and health documents for your London 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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


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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to London with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom $366Free CancellationRating
7.1
91 reviews
Search PLAY flights
Scandinavian AirlinesPriceFrom $370Free CancellationRating
7.3
1,309 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom $398Free CancellationRating
7.1
1,877 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom $459Free CancellationRating
7.1
1,073 reviews
Search Aer Lingus flights
IcelandairPriceFrom $480Free CancellationRating
7.1
510 reviews
Search Icelandair flights
KLMPriceFrom $546Free CancellationRating
7.8
1,349 reviews
Search KLM flights
FinnairPriceFrom $551Free CancellationRating
7.7
1,285 reviews
Search Finnair flights
SWISSPriceFrom $572Free CancellationRating
7.6
1,606 reviews
Search SWISS flights
IberiaPriceFrom $581Free CancellationRating
7.0
2,656 reviews
Search Iberia flights
DeltaPriceFrom $586Free CancellationRating
8.0
8,604 reviews
Search Delta flights
  • Delta Flights From Washington, D.C. Dulles Intl Airport to London

    Delta flight deals from Washington, D.C. Dulles Intl Airport to London start from $586 round-trip. Over the 1 Delta flight for this route in a normal week, average airfare is usually $849 round-trip - but some users have found much cheaper deals with momondo.

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

    Another popular option for Washington, D.C. Dulles Intl Airport to London flights is KLM (7.8/10, 1,349 ratings). KLM flies from Washington, D.C. Dulles Intl Airport to London around 1 time per week, with deals starting from $546 round-trip and rising to an average price of around $771.


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?

momondo does allow users to show only those flights to London from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London