Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London to Washington, D.C. Dulles Intl Airport from $175

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 3/14. 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.
7:35 am - 6:00 pmLTN-IAD
14h 25m1 stop
6:50 pm - 12:40 pmIAD-LTN
12h 50m1 stop
Mon, Mar 24 - Sun, Mar 30
11:00 am - 6:00 pmSTN-IAD
11h 00m1 stop
6:50 pm - 10:40 amIAD-STN
10h 50m1 stop
$388PLAY
Find Deal
Mon, Mar 24 - Sun, Mar 30
6:00 pm - 9:46 amLHR-IAD
20h 46m1 stop
6:05 am - 8:35 pmIAD-LHR
9h 30m1 stop
$540Lufthansa
Find Deal
Sat, Jan 18 - Mon, Jan 20
2:30 pm - 8:05 amLHR-IAD
21h 35m1 stop
8:35 am - 6:20 amIAD-LHR
17h 45m1 stop
$618Lufthansa
Find Deal
Sat, Mar 15 - Sun, Mar 23
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$699Delta
Find Deal
Mon, Feb 17 - Mon, Feb 24
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$700Delta
Find Deal
Mon, Jan 13 - Tue, Jan 21
7:45 am - 3:45 pmLCY-IAD
13h 00m1 stop
5:35 pm - 8:10 amIAD-LCY
9h 35m1 stop
$804Virgin Atlantic
Find Deal
Mon, Jan 20 - Mon, Jan 27
10:00 am - 3:45 pmLCY-IAD
10h 45m1 stop
5:35 pm - 9:30 amIAD-LCY
10h 55m1 stop
$829Virgin Atlantic
Find Deal
Wed, Dec 4 - Mon, Dec 9
9:10 am - 3:40 pmLCY-IAD
11h 30m1 stop
5:10 pm - 8:35 amIAD-LCY
10h 25m1 stop
$950British Airways
Find Deal
Thu, Jan 9 - Thu, Jan 23
6:50 am - 3:40 pmLCY-IAD
13h 50m1 stop
5:10 pm - 10:25 amIAD-LCY
12h 15m1 stop
$966British Airways
Find Deal
Tue, Dec 10 - Mon, Dec 16
3:05 pm - 6:00 pmLGW-IAD
30h 55m1 stop
Fri, Mar 14
5:00 pm - 6:00 pmLGW-IAD
29h 00m2 stops
Fri, Mar 14
11:40 am - 5:40 pmSTN-IAD
11h 00m1 stop
$307PLAY
Find Deal
Mon, Mar 31
11:00 am - 6:00 pmSTN-IAD
11h 00m1 stop
$327PLAY
Find Deal
Fri, Mar 14
5:55 pm - 3:45 pmLCY-IAD
26h 50m1 stop
$595Virgin Atlantic
Find Deal
Mon, Jan 13
9:20 am - 3:45 pmLCY-IAD
11h 25m1 stop
$800Virgin Atlantic
Find Deal
Fri, Nov 29
10:00 am - 8:20 pmLCY-IAD
15h 20m1 stop
$923Lufthansa
Find Deal
Wed, Jan 1
6:55 am - 3:40 pmLCY-IAD
13h 45m2 stops
$956British Airways
Find Deal
Tue, Dec 3
6:15 pm - 3:50 pmLCY-IAD
26h 35m1 stop
$1,040Lufthansa
Find Deal
Mon, Dec 23
6:55 am - 3:40 pmLCY-IAD
13h 45m2 stops
$1,051British Airways
Find Deal
Mon, Dec 16
6:00 am - 5:00 pmLTN-IAD
16h 00m1 stop
6:10 pm - 1:55 pmIAD-LTN
14h 45m1 stop
Sun, Nov 24 - Mon, Dec 2
11:00 am - 5:00 pmSTN-IAD
11h 00m1 stop
6:10 pm - 10:00 amIAD-STN
10h 50m1 stop
$518PLAY
Find Deal
Sun, Nov 24 - Mon, Dec 2
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
5:56 pm - 7:10 amIAD-LHR
32h 14m1 stop
$677Lufthansa
Find Deal
Fri, Nov 22 - Sat, Nov 30
3:10 pm - 10:48 pmLHR-IAD
12h 38m1 stop
5:56 pm - 7:10 amIAD-LHR
32h 14m1 stop
$683Lufthansa
Find Deal
Fri, Nov 22 - Sat, Nov 30
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$944Virgin Atlantic
Find Deal
Fri, Nov 22 - Mon, Nov 25
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$990Virgin Atlantic
Find Deal
Sun, Nov 24 - Mon, Dec 2
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
5:56 pm - 7:10 amIAD-LHR
32h 14m1 stop
$1,067United Airlines
Find Deal
Fri, Nov 22 - Sat, Nov 30
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
5:56 pm - 7:10 amIAD-LHR
32h 14m1 stop
$1,069United Airlines
Find Deal
Thu, Nov 21 - Sat, Nov 30
12:45 pm - 7:15 pmLCY-IAD
11h 30m1 stop
8:45 pm - 12:40 pmIAD-LCY
10h 55m1 stop
$1,631British Airways
Find Deal
Sun, Nov 24 - Mon, Dec 2
12:45 pm - 7:15 pmLCY-IAD
11h 30m1 stop
5:10 pm - 8:35 amIAD-LCY
10h 25m1 stop
$1,634British Airways
Find Deal
Sun, Nov 24 - Mon, Jan 13
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
Mon, Jan 13 - Tue, Jan 21
12:25 pm - 5:05 pmLHR-IAD
8h 40mnonstop
9:50 pm - 10:05 amIAD-LHR
7h 15mnonstop
$714Delta
Find Deal
Mon, Mar 24 - Wed, Apr 2
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$728Lufthansa
Find Deal
Wed, Jan 8 - Wed, Jan 22
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
10:45 pm - 11:05 amIAD-LHR
7h 20mnonstop
$772British Airways
Find Deal
Wed, Jan 29 - Mon, Mar 31
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$774British Airways
Find Deal
Mon, Jan 27 - Mon, Feb 10
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$776Lufthansa
Find Deal
Fri, Dec 6 - Mon, Dec 9
5:05 pm - 8:01 pmLHR-IAD
7h 56mnonstop
9:50 pm - 10:05 amIAD-LHR
7h 15mnonstop
$777Virgin Atlantic
Find Deal
Fri, Apr 25 - Tue, May 6
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$802Virgin Atlantic
Find Deal
Fri, Jan 17 - Fri, Jan 24
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$842Iberia
Find Deal
Fri, Jan 10 - Wed, Jan 29
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
$844Iberia
Find Deal
Tue, Jan 28 - Sun, Feb 9

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

Our best Scandinavian Airlines deals on London to Washington, D.C. Dulles Intl Airport flight tickets
Scandinavian Airlines
Jan 31
LHR9:05 pmLondon Heathrow
23h 35m
2 stops
IAD3:40 pmWashington, D.C. Dulles Intl
Mar 31
IAD6:50 pmWashington, D.C. Dulles Intl
18h 40m
1 stop
LHR6:30 pmLondon Heathrow
Scandinavian Airlines
Jan 13
LHR6:40 amLondon Heathrow
14h 00m
1 stop
IAD3:40 pmWashington, D.C. Dulles Intl
Jan 26
IAD5:10 pmWashington, D.C. Dulles Intl
18h 15m
2 stops
LHR4:25 pmLondon Heathrow
Scandinavian Airlines
Jan 17
LHR6:40 amLondon Heathrow
38h 00m
2 stops
IAD3:40 pmWashington, D.C. Dulles Intl
Jan 24
IAD5:10 pmWashington, D.C. Dulles Intl
11h 10m
1 stop
LHR9:20 amLondon Heathrow

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
Jan 15
LCY7:10 pmLondon City
26h 15m
1 stop
IAD4:25 pmWashington, D.C. Dulles Intl
Jan 22
IAD5:30 pmWashington, D.C. Dulles Intl
14h 20m
1 stop
LCY12:50 pmLondon City
SWISS
Dec 3
LCY9:15 amLondon City
12h 10m
1 stop
IAD4:25 pmWashington, D.C. Dulles Intl
Dec 10
IAD8:45 pmWashington, D.C. Dulles Intl
11h 05m
1 stop
LCY12:50 pmLondon 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. Most expensive is June

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

Thursday. The cheapest day of the week is typically Thursday. The most expensive is typically 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 18% 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 3 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 71% 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 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

$175

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 $175. The best round-trip flight deal from London to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $371.
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?

    Washington, D.C. Dulles Intl is 3677.3 mi away from London. By plane, this route typically takes 8h 15m.

  • 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 $352Free CancellationRating
7.1
88 reviews
Search PLAY flights
Scandinavian AirlinesPriceFrom $525Free CancellationRating
7.3
1,301 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $529Free CancellationRating
7.2
555 reviews
Search Icelandair flights
Aer LingusPriceFrom $538Free CancellationRating
7.1
1,089 reviews
Search Aer Lingus flights
Virgin AtlanticPriceFrom $562Free CancellationRating
7.5
663 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $583Free CancellationRating
7.0
2,662 reviews
Search Iberia flights
United AirlinesPriceFrom $590Free CancellationRating
7.4
9,171 reviews
Search United Airlines flights
British AirwaysPriceFrom $592Free CancellationRating
6.6
6,837 reviews
Search British Airways flights
TAP AIR PORTUGALPriceFrom $598Free CancellationRating
7.1
1,892 reviews
Search TAP AIR PORTUGAL flights
Austrian AirlinesPriceFrom $608Free CancellationRating
7.6
805 reviews
Search Austrian Airlines flights
  • Delta Flights From London to Washington, D.C. Dulles Intl Airport

    Delta flies from London to Washington, D.C. Dulles Intl Airport around 3 times per week, with 8,756 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 $608 (round-trip), much lower than the average airfare cost of $922 for Delta flights on this route.

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

    Across 805 Austrian Airlines reviews on momondo, the average score is 7.6/10. 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.


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?
Mon 11/25
Mon 12/2
Email me momondo's favorite deals

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