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Cheap flights from London to Washington, D.C. Dulles Intl Airport from $332

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 5/6. 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 London to Washington, D.C.

Cheap round-trip flights

These are some of the best round-trip 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 layovers.

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 from London to Washington, D.C.

The cheapest plane tickets from London to Washington, D.C. found on KAYAK recently.
8:15 am - 7:25 pmSTN-IAD
15h 10m2 stops
8:40 pm - 12:50 pmIAD-STN
12h 10m2 stops
Mon, Mar 10 - Sun, Mar 16
10:30 pm - 6:25 pmLGW-IAD
24h 55m2 stops
8:40 pm - 9:00 pmIAD-LGW
20h 20m2 stops
Sat, Mar 1 - Mon, Mar 10
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$553Virgin Atlantic
Find Deal
Mon, Feb 3 - Mon, Feb 10
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$576Virgin Atlantic
Find Deal
Wed, Feb 19 - Wed, Feb 26
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$586British Airways
Find Deal
Tue, Feb 25 - Tue, Mar 4
8:55 am - 5:25 pmLHR-IAD
12h 30m1 stop
10:15 pm - 10:40 amIAD-LHR
7h 25mnonstop
$587United Airlines
Find Deal
Tue, Mar 25 - Mon, Mar 31
8:45 am - 4:15 pmLHR-IAD
12h 30m1 stop
6:30 pm - 6:55 amIAD-LHR
7h 25mnonstop
$590United Airlines
Find Deal
Wed, Apr 23 - Mon, May 12
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$604Delta
Find Deal
Mon, Feb 3 - Wed, Feb 26
12:25 pm - 5:05 pmLHR-IAD
8h 40mnonstop
6:10 pm - 6:45 amIAD-LHR
7h 35mnonstop
$607Delta
Find Deal
Wed, Mar 19 - Tue, Apr 1
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
$619British Airways
Find Deal
Sat, Feb 8 - Tue, Feb 11
9:45 pm - 7:05 pmSTN-IAD
26h 20m2 stops
Tue, May 6
5:45 am - 6:40 pmSTN-IAD
17h 55m2 stops
Fri, Mar 7
12:05 pm - 3:45 pmLHR-IAD
8h 40mnonstop
$599Lufthansa
Find Deal
Mon, Mar 3
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
$609British Airways
Find Deal
Tue, Feb 11
10:00 am - 8:20 pmLCY-IAD
15h 20m1 stop
$637Lufthansa
Find Deal
Wed, Feb 12
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$646British Airways
Find Deal
Sat, Feb 1
10:00 am - 3:35 pmLCY-IAD
10h 35m1 stop
$1,188Virgin Atlantic
Find Deal
Sat, Jun 7
8:40 am - 4:45 pmLCY-IAD
12h 05m1 stop
$1,394Delta
Find Deal
Mon, Mar 24
10:00 am - 12:09 amLCY-IAD
19h 09m2 stops
$1,409Virgin Atlantic
Find Deal
Tue, Apr 22
7:45 am - 4:29 pmLCY-IAD
13h 44m2 stops
$1,469Delta
Find Deal
Thu, May 15
3:00 pm - 3:13 pmLHR-IAD
29h 13m1 stop
6:05 am - 8:35 pmIAD-LHR
9h 30m1 stop
$521Lufthansa
Find Deal
Sat, Jan 25 - Mon, Jan 27
6:30 am - 6:25 pmSTN-IAD
16h 55m2 stops
7:40 pm - 6:20 pmIAD-STN
17h 40m2 stops
Thu, Jan 23 - Sun, Jan 26
7:10 am - 2:35 pmLHR-IAD
12h 25m1 stop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$670United Airlines
Find Deal
Sun, Jan 26 - Sun, Feb 2
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$680Delta
Find Deal
Sun, Jan 26 - Sun, Feb 2
10:05 am - 3:06 pmLHR-IAD
34h 01m1 stop
12:35 pm - 7:10 amIAD-LHR
13h 35m2 stops
$738United Airlines
Find Deal
Sat, Jan 25 - Mon, Jan 27
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$899Delta
Find Deal
Sat, Jan 25 - Mon, Feb 10
1:15 pm - 4:55 pmLHR-IAD
8h 40mnonstop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$901Virgin Atlantic
Find Deal
Thu, Jan 23 - Sun, Jan 26
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$942Virgin Atlantic
Find Deal
Sat, Jan 25 - Fri, Feb 14
6:50 am - 3:40 pmLCY-IAD
13h 50m1 stop
5:10 pm - 10:45 amIAD-LCY
12h 35m1 stop
$1,346British Airways
Find Deal
Fri, Jan 24 - Fri, Jan 31
9:10 am - 3:40 pmLCY-IAD
11h 30m1 stop
5:10 pm - 10:45 amIAD-LCY
12h 35m1 stop
$1,431British Airways
Find Deal
Thu, Jan 23 - Fri, Jan 31
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$553Virgin Atlantic
Find Deal
Mon, Feb 3 - Mon, Feb 10
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$569Virgin Atlantic
Find Deal
Wed, Feb 12 - Wed, Mar 5
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$582British Airways
Find Deal
Tue, Feb 25 - Tue, Mar 4
4:30 pm - 8:45 pmLHR-IAD
8h 15mnonstop
7:25 pm - 7:45 amIAD-LHR
7h 20mnonstop
$585British Airways
Find Deal
Mon, Mar 24 - Mon, May 12
12:25 pm - 5:05 pmLHR-IAD
8h 40mnonstop
6:10 pm - 6:45 amIAD-LHR
7h 35mnonstop
$607Delta
Find Deal
Wed, Mar 19 - Tue, Apr 1
12:25 pm - 5:05 pmLHR-IAD
8h 40mnonstop
7:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$609Delta
Find Deal
Wed, Mar 19 - Wed, Mar 26
4:40 pm - 7:50 pmLHR-IAD
8h 10mnonstop
10:15 pm - 10:40 amIAD-LHR
7h 25mnonstop
$623Lufthansa
Find Deal
Tue, Apr 22 - Tue, Apr 29
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
6:30 pm - 6:55 amIAD-LHR
7h 25mnonstop
$628Lufthansa
Find Deal
Sat, Feb 8 - Mon, May 5
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
10:35 pm - 10:50 amIAD-LHR
7h 15mnonstop
$657United Airlines
Find Deal
Thu, Feb 6 - Mon, Feb 17
12:15 pm - 3:25 pmLHR-IAD
8h 10mnonstop
6:35 pm - 6:55 amIAD-LHR
7h 20mnonstop
$685United Airlines
Find Deal
Wed, May 7 - Mon, May 26

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

Our best Virgin Atlantic deals on London to Washington, D.C. Dulles Intl Airport flight tickets
Virgin Atlantic
Jan 27
LHR12:25 pmLondon Heathrow
8h 40m
IAD4:05 pmWashington, D.C. Dulles Intl
Feb 10
IAD6:45 pmWashington, D.C. Dulles Intl
7h 30m
LHR7:15 amLondon Heathrow
Virgin Atlantic
Feb 3
LHR12:25 pmLondon Heathrow
8h 40m
IAD4:05 pmWashington, D.C. Dulles Intl
Feb 10
IAD6:45 pmWashington, D.C. Dulles Intl
7h 30m
LHR7:15 amLondon Heathrow
Virgin Atlantic
Jan 27
LHR9:00 amLondon Heathrow
12h 15m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
Feb 10
IAD6:45 pmWashington, D.C. Dulles Intl
7h 30m
LHR7:15 amLondon Heathrow

TAP AIR PORTUGAL flights from London to Washington, D.C. Dulles Intl Airport

Our best TAP AIR PORTUGAL deals on London to Washington, D.C. Dulles Intl Airport flight tickets
TAP AIR PORTUGAL
Apr 30
LGW4:25 pmLondon Gatwick
27h 55m
1 stop
IAD3:20 pmWashington, D.C. Dulles Intl
May 11
IAD5:45 pmWashington, D.C. Dulles Intl
16h 25m
1 stop
LGW3:10 pmLondon Gatwick
TAP AIR PORTUGAL
Mar 7
LHR12:25 pmLondon Heathrow
13h 35m
1 stop
IAD9:00 pmWashington, D.C. Dulles Intl
Mar 31
IAD10:20 pmWashington, D.C. Dulles Intl
15h 30m
1 stop
LHR6:50 pmLondon Heathrow
TAP AIR PORTUGAL
Apr 25
LHR6:00 amLondon Heathrow
14h 20m
1 stop
IAD3:20 pmWashington, D.C. Dulles Intl
May 15
IAD10:20 pmWashington, D.C. Dulles Intl
18h 45m
1 stop
LHR10:05 pmLondon Heathrow

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 typical price of a round-trip flight between London and Washington, D.C. Dulles Intl Airport?

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, February is the cheapest month to fly from London to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $697. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $704.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $846. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London to Washington, D.C. Dulles Intl Airport for around $978.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from London in the evening is the least expensive time of day to depart. momondo users have found prices as low as $743 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $938 on average. Flights to Washington, D.C. Dulles Intl Airport from London in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from London when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $818 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from London for as low as $734 on momondo.

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

There are 4 cabin classes available to choose from on London to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of January 2025, prices for London to Washington, D.C. Dulles Intl Airport flights are approximately 38% 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 round-trip 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

$332

Fastest flight time

8h 10m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from London in the past 72 hours is $332. The best round-trip flight deal from London to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $428.
The fastest flight from London to Washington, D.C. Dulles Intl Airport takes 8h 10m
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?

    Washington, D.C. Dulles Intl is 3677.3 mi away from London. By plane, this route typically takes 8h 10m.

  • 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?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 you'll need for your trip to Washington, D.C. Dulles Intl 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 Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • 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 $348Free CancellationRating
7.1
92 reviews
Search PLAY flights
Scandinavian AirlinesPriceFrom $390Free CancellationRating
7.3
1,320 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $510Free CancellationRating
7.1
501 reviews
Search Icelandair flights
Aer LingusPriceFrom $511Free CancellationRating
7.1
1,082 reviews
Search Aer Lingus flights
IberiaPriceFrom $586Free CancellationRating
7.0
2,646 reviews
Search Iberia flights
Austrian AirlinesPriceFrom $608Free CancellationRating
7.5
786 reviews
Search Austrian Airlines flights
American AirlinesPriceFrom $619Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $622Free CancellationRating
6.6
6,834 reviews
Search British Airways flights
United AirlinesPriceFrom $628Free CancellationRating
7.4
8,985 reviews
Search United Airlines flights
DeltaPriceFrom $652Free CancellationRating
8.0
8,521 reviews
Search Delta flights
  • Delta Flights From London to Washington, D.C. Dulles Intl Airport

    Delta flies from London to Washington, D.C. Dulles Intl Airport around 6 times per week, with 8,521 momondo users rating the airline 8.0/10. The cheapest Delta deal from London to Washington, D.C. Dulles Intl Airport in the last 72 hours was $652 (round-trip), much lower than the average airfare cost of $1,005 for Delta flights on this route.

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

    Across 786 Austrian Airlines reviews on momondo, the average score is 7.5/10. Austrian Airlines flies from London to Washington, D.C. Dulles Intl Airport about 14 times each week, with ticket deals ranging from $608 to $858. Price data is based on momondo searches in the last 72 hours.


Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Arlington
Gettysburg
Laurel
National Harbor
Winchester
Silver Spring
Fredericksburg
Manassas
Woodbridge
Waldorf
Linthicum Heights
Glen Burnie
Gaithersburg
Rockville
Fairfax
Harpers Ferry
Tysons
Towson
Hanover

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. All flights to Washington, D.C. from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between London and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Washington, D.C. from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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