Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London to Washington, D.C. Dulles Intl Airport from $305

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 1/30. 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."
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize 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 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 to Washington, D.C.

The cheapest plane tickets to Washington, D.C. found on KAYAK recently.
11:55 am - 6:25 pmLGW-IAD
11h 30m1 stop
7:40 pm - 10:55 amIAD-LGW
10h 15m1 stop
$459Icelandair
Find Deal
Mon, Jan 27 - Mon, Feb 3
11:55 am - 6:25 pmLGW-IAD
11h 30m1 stop
7:40 pm - 10:55 amIAD-LGW
10h 15m1 stop
$464Icelandair
Find Deal
Wed, Feb 19 - Sun, Feb 23
9:00 am - 4:15 pmLHR-IAD
12h 15m1 stop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$589Virgin Atlantic
Find Deal
Mon, Jan 27 - Mon, Feb 3
6:30 am - 4:26 pmLHR-IAD
14h 56m2 stops
5:45 pm - 8:25 amIAD-LHR
9h 40m1 stop
$593United Airlines
Find Deal
Tue, Feb 4 - Tue, Feb 11
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$604Virgin Atlantic
Find Deal
Mon, Jan 27 - Mon, Feb 3
1:45 pm - 3:30 pmLHR-IAD
30h 45m1 stop
12:55 pm - 7:10 amIAD-LHR
13h 15m2 stops
$606United Airlines
Find Deal
Mon, Jan 27 - Mon, Feb 3
12:25 pm - 5:05 pmLHR-IAD
8h 40mnonstop
7:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$622Delta
Find Deal
Mon, Mar 17 - Tue, Mar 25
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$624British Airways
Find Deal
Mon, Jan 13 - Mon, Jan 27
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$640Delta
Find Deal
Mon, Jan 13 - Tue, Jan 28
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
$661British Airways
Find Deal
Mon, Jan 13 - Sun, Jan 26
2:00 pm - 6:19 pmLGW-IAD
33h 19m1 stop
Thu, Jan 30
2:00 pm - 10:44 amLGW-IAD
25h 44m2 stops
Thu, Jan 30
5:50 pm - 6:40 pmSTN-IAD
29h 50m2 stops
Thu, Jan 30
10:00 am - 11:16 pmLCY-IAD
18h 16m2 stops
$561Virgin Atlantic
Find Deal
Thu, Jan 30
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
$621Lufthansa
Find Deal
Mon, Jan 13
9:10 am - 11:58 pmLHR-IAD
19h 48m1 stop
$626Virgin Atlantic
Find Deal
Tue, Dec 31
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
$661British Airways
Find Deal
Sat, Feb 1
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$666British Airways
Find Deal
Sun, Feb 16
10:00 am - 8:20 pmLCY-IAD
15h 20m1 stop
$807Lufthansa
Find Deal
Wed, Jan 1
10:00 am - 3:45 pmLCY-IAD
10h 45m1 stop
$2,629Delta
Find Deal
Wed, Jan 15
7:25 pm - 2:35 pmLHR-IAD
24h 10m1 stop
5:25 pm - 8:35 pmIAD-LHR
46h 10m2 stops
$754Austrian Airlines
Find Deal
Thu, Dec 26 - Sat, Jan 18
6:40 pm - 3:40 pmLHR-IAD
26h 00m1 stop
10:05 pm - 5:40 pmIAD-LHR
14h 35m1 stop
$791Scandinavian Airlines
Find Deal
Tue, Dec 24 - Mon, May 19
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:10 pm - 6:45 amIAD-LHR
7h 35mnonstop
$934Virgin Atlantic
Find Deal
Tue, Dec 24 - Mon, May 19
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
8:40 pm - 9:10 amIAD-LHR
7h 30mnonstop
$1,024Delta
Find Deal
Wed, Dec 25 - Thu, Jan 9
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
8:40 pm - 9:10 amIAD-LHR
7h 30mnonstop
$1,034Delta
Find Deal
Tue, Dec 24 - Thu, Jan 9
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$1,270United Airlines
Find Deal
Thu, Dec 26 - Mon, Jan 20
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
$1,285British Airways
Find Deal
Thu, Dec 26 - Thu, Jan 23
12:05 pm - 4:25 pmLHR-IAD
33h 20m1 stop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$1,291United Airlines
Find Deal
Mon, Dec 23 - Wed, Jan 8
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$1,317British Airways
Find Deal
Thu, Dec 26 - Mon, Jan 20
6:55 pm - 3:45 pmLCY-IAD
25h 50m1 stop
5:35 pm - 8:50 amIAD-LCY
10h 15m1 stop
$1,798Virgin Atlantic
Find Deal
Sun, Dec 22 - Sun, Dec 29
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$584KLM
Find Deal
Wed, Feb 12 - Tue, Feb 18
12:45 pm - 4:15 pmLHR-IAD
8h 30mnonstop
6:10 pm - 6:45 amIAD-LHR
7h 35mnonstop
$587KLM
Find Deal
Tue, Apr 29 - Tue, May 6
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$594Virgin Atlantic
Find Deal
Mon, Jan 27 - Mon, Feb 3
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$604Virgin Atlantic
Find Deal
Mon, Jan 27 - Mon, Feb 3
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$606British Airways
Find Deal
Tue, Feb 4 - Tue, Feb 11
12:25 pm - 5:05 pmLHR-IAD
8h 40mnonstop
7:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$622Delta
Find Deal
Mon, Mar 17 - Tue, Mar 25
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$624British Airways
Find Deal
Mon, Jan 13 - Thu, Jan 23
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$640Delta
Find Deal
Mon, Jan 13 - Tue, Jan 28
12:15 pm - 3:25 pmLHR-IAD
8h 10mnonstop
10:15 pm - 10:40 amIAD-LHR
7h 25mnonstop
$707United Airlines
Find Deal
Mon, Apr 14 - Wed, Apr 30
4:40 pm - 8:00 pmLHR-IAD
8h 20mnonstop
6:35 pm - 6:55 amIAD-LHR
7h 20mnonstop
$772United Airlines
Find Deal
Mon, Jun 16 - Tue, Jul 15

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

Our best Icelandair deals on London to Washington, D.C. Dulles Intl Airport flight tickets
Icelandair
Jan 27
LGW11:55 amLondon Gatwick
11h 30m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Feb 3
IAD7:40 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55 amLondon Gatwick
Icelandair
Feb 19
LGW11:55 amLondon Gatwick
11h 30m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Feb 23
IAD7:40 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55 amLondon Gatwick
Icelandair
Jan 24
LGW11:55 amLondon Gatwick
11h 30m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Jan 27
IAD7:40 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55 amLondon Gatwick

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

Our best Austrian Airlines deals on London to Washington, D.C. Dulles Intl Airport flight tickets
Austrian Airlines
Feb 6
LHR2:50 pmLondon Heathrow
52h 45m
2 stops
IAD2:35 pmWashington, D.C. Dulles Intl
Feb 8
IAD6:00 pmWashington, D.C. Dulles Intl
32h 25m
1 stop
LHR7:25 amLondon Heathrow
Austrian Airlines
Jan 28
LHR6:00 amLondon Heathrow
13h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Feb 1
IAD5:25 pmWashington, D.C. Dulles Intl
46h 10m
2 stops
LHR8:35 pmLondon Heathrow
Austrian Airlines
Feb 4
LHR12:05 pmLondon Heathrow
8h 35m
IAD3:40 pmWashington, D.C. Dulles Intl
Feb 11
IAD10:15 pmWashington, D.C. Dulles Intl
7h 35m
LHR10:50 amLondon 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, April 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 $692. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of April, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $710.

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 $762. 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 $874.

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 Gatwick 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?

The ideal time to book your flight to Washington, D.C. Dulles Intl Airport is 60 days in advance when prices tend to average $815. 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 $717 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.

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

You could potentially save up to 50% 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 December 2024, prices for London to Washington, D.C. Dulles Intl Airport flights are approximately 11% 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

$305

Fastest flight time

8h 05m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from London in the past 72 hours is $305. The best round-trip flight deal from London to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $459.
The fastest flight from London to Washington, D.C. Dulles Intl Airport takes 8h 05m
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
91 reviews
Search PLAY flights
DeltaPriceFrom $444Free CancellationRating
8.0
8,594 reviews
Search Delta flights
Aer LingusPriceFrom $511Free CancellationRating
7.1
1,075 reviews
Search Aer Lingus flights
Scandinavian AirlinesPriceFrom $527Free CancellationRating
7.3
1,314 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $529Free CancellationRating
7.1
508 reviews
Search Icelandair flights
IberiaPriceFrom $586Free CancellationRating
7.0
2,652 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $599Free CancellationRating
7.5
668 reviews
Search Virgin Atlantic flights
Austrian AirlinesPriceFrom $608Free CancellationRating
7.5
785 reviews
Search Austrian Airlines flights
American AirlinesPriceFrom $619Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $621Free CancellationRating
6.6
6,815 reviews
Search British Airways 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 8,594 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 $444 (round-trip), much lower than the average airfare cost of $936 for Delta flights on this route.

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

    Across 668 Virgin Atlantic reviews on momondo, the average score is 7.5/10. Virgin Atlantic flies from London to Washington, D.C. Dulles Intl Airport about 6 times each week, with ticket deals ranging from $599 to $973. 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. 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.


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

We make it super easy to schedule, organize 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?
Fri 12/27
Fri 1/3
Email me momondo's favorite deals

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