Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport from $291

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 Heathrow Airport to Washington, D.C. Dulles Intl Airport departing on 3/17. 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 Heathrow Airport to Washington, D.C.

Cheap round-trip flights

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

Cheap last minute flights

Planning a quick getaway from London Heathrow Airport 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 Heathrow Airport to Washington, D.C.

Find recent round-trip train or bus tickets from London Heathrow Airport 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.
7:20 am - 6:00 pmLHR-IAD
14h 40m1 stop
7:10 pm - 3:00 pmIAD-LHR
15h 50m1 stop
Sun, Mar 9 - Thu, Mar 13
7:30 am - 6:00 pmLHR-IAD
14h 30m1 stop
7:10 pm - 2:55 pmIAD-LHR
15h 45m1 stop
Wed, Mar 12 - Wed, Mar 19
7:25 am - 6:00 pmLHR-IAD
14h 35m1 stop
7:10 pm - 3:00 pmIAD-LHR
15h 50m1 stop
Thu, Mar 20 - Sun, Mar 23
9:50 am - 3:40 pmLHR-IAD
10h 50m1 stop
5:10 pm - 9:05 amIAD-LHR
10h 55m1 stop
$550Aer Lingus
Find Deal
Wed, Nov 27 - Thu, Dec 12
8:40 pm - 6:25 pmLHR-IAD
26h 45m1 stop
7:40 pm - 10:50 amIAD-LHR
10h 10m1 stop
$584Icelandair
Find Deal
Sun, Nov 24 - Mon, Dec 9
12:15 pm - 6:25 pmLHR-IAD
11h 10m1 stop
8:30 pm - 10:55 amIAD-LHR
10h 25m1 stop
$611Icelandair
Find Deal
Sat, Mar 8 - Sat, Mar 29
7:50 am - 3:40 pmLHR-IAD
12h 50m1 stop
5:10 pm - 10:20 amIAD-LHR
12h 10m1 stop
$671Aer Lingus
Find Deal
Fri, Dec 6 - Sat, Dec 14
4:20 pm - 8:40 pmLHR-IAD
8h 20mnonstop
10:05 pm - 8:40 pmIAD-LHR
17h 35m1 stop
$679Lufthansa
Find Deal
Tue, Mar 25 - Sat, Mar 29
2:30 pm - 3:13 pmLHR-IAD
29h 43m1 stop
6:30 pm - 6:40 amIAD-LHR
7h 10mnonstop
$700Lufthansa
Find Deal
Sat, Nov 23 - Sun, Dec 1
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$744Virgin Atlantic
Find Deal
Wed, Jan 8 - Wed, Jan 22
7:35 am - 6:00 pmLHR-IAD
14h 25m1 stop
Mon, Mar 17
8:40 pm - 6:00 pmLHR-IAD
25h 20m1 stop
Tue, Mar 11
12:15 pm - 6:25 pmLHR-IAD
11h 10m1 stop
$515Icelandair
Find Deal
Sat, Jan 18
12:15 pm - 6:25 pmLHR-IAD
11h 10m1 stop
$517Icelandair
Find Deal
Fri, Jan 10
12:25 pm - 9:00 pmLHR-IAD
13h 35m1 stop
$533TAP AIR PORTUGAL
Find Deal
Fri, Jan 17
6:00 am - 2:30 pmLHR-IAD
13h 30m1 stop
$534TAP AIR PORTUGAL
Find Deal
Tue, Dec 10
9:50 am - 3:40 pmLHR-IAD
10h 50m1 stop
$568Aer Lingus
Find Deal
Tue, Dec 10
9:50 am - 3:40 pmLHR-IAD
10h 50m1 stop
$577Aer Lingus
Find Deal
Wed, Dec 4
6:40 am - 3:40 pmLHR-IAD
38h 00m2 stops
$582Scandinavian Airlines
Find Deal
Sat, Dec 14
7:50 pm - 3:40 pmLHR-IAD
24h 50m2 stops
$588Scandinavian Airlines
Find Deal
Tue, Jan 7
6:40 am - 3:40 pmLHR-IAD
14h 00m1 stop
5:10 pm - 9:40 pmIAD-LHR
23h 30m1 stop
$632Scandinavian Airlines
Find Deal
Fri, Nov 8 - Mon, Nov 18
4:00 pm - 10:48 pmLHR-IAD
11h 48m1 stop
10:09 pm - 8:30 amIAD-LHR
29h 21m1 stop
$655United Airlines
Find Deal
Fri, Nov 8 - Sat, Nov 9
9:50 am - 3:40 pmLHR-IAD
10h 50m1 stop
5:10 pm - 9:05 amIAD-LHR
10h 55m1 stop
$754Aer Lingus
Find Deal
Tue, Nov 5 - Sun, Nov 10
9:50 am - 3:40 pmLHR-IAD
10h 50m1 stop
5:10 pm - 10:20 amIAD-LHR
12h 10m1 stop
$760Aer Lingus
Find Deal
Tue, Nov 5 - Tue, Nov 12
1:05 pm - 4:45 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$1,078Virgin Atlantic
Find Deal
Wed, Nov 6 - Wed, Nov 20
1:05 pm - 4:45 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$1,116Virgin Atlantic
Find Deal
Fri, Nov 8 - Mon, Nov 18
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
10:15 pm - 10:50 amIAD-LHR
7h 35mnonstop
$1,143Lufthansa
Find Deal
Sat, Nov 9 - Sat, Nov 16
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
10:30 pm - 11:05 amIAD-LHR
7h 35mnonstop
$1,146Lufthansa
Find Deal
Sat, Nov 9 - Sun, Nov 17
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$1,201British Airways
Find Deal
Wed, Nov 6 - Wed, Nov 13
9:50 am - 3:40 pmLHR-IAD
10h 50m1 stop
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
$1,356British Airways
Find Deal
Thu, Nov 7 - Tue, Nov 12
12:25 pm - 5:05 pmLHR-IAD
8h 40mnonstop
10:20 pm - 9:30 amIAD-LHR
7h 10mnonstop
$740Air France
Find Deal
Tue, Mar 18 - Tue, Mar 25
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$741Lufthansa
Find Deal
Tue, Dec 3 - Tue, Dec 10
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$742Virgin Atlantic
Find Deal
Wed, Feb 12 - Tue, Feb 18
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$744Virgin Atlantic
Find Deal
Wed, Jan 8 - Wed, Jan 22
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$747Lufthansa
Find Deal
Tue, Dec 3 - Mon, Dec 9
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
$754Aer Lingus
Find Deal
Wed, Nov 27 - Tue, Dec 10
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$788British Airways
Find Deal
Mon, Feb 10 - Tue, Feb 18
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
$793British Airways
Find Deal
Wed, Dec 4 - Wed, Dec 11
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$834United Airlines
Find Deal
Fri, Jan 31 - Tue, Feb 4
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$862United Airlines
Find Deal
Mon, Dec 9 - Mon, Dec 30

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

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Washington, D.C. Dulles Intl Airport flight tickets
TAP AIR PORTUGAL
Mar 8
LHR6:00 amLondon Heathrow
14h 00m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
Mar 17
IAD8:15 pmWashington, D.C. Dulles Intl
12h 25m
1 stop
LHR12:40 pmLondon Heathrow
TAP AIR PORTUGAL
Dec 8
LHR6:30 pmLondon Heathrow
23h 30m
1 stop
IAD1:00 pmWashington, D.C. Dulles Intl
Feb 9
IAD10:30 pmWashington, D.C. Dulles Intl
18h 05m
1 stop
LHR9:35 pmLondon Heathrow
TAP AIR PORTUGAL
Jan 17
LHR6:00 amLondon Heathrow
20h 00m
1 stop
IAD9:00 pmWashington, D.C. Dulles Intl
Jan 31
IAD10:30 pmWashington, D.C. Dulles Intl
15h 25m
1 stop
LHR6:55 pmLondon Heathrow

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

Our best Icelandair deals on London Heathrow Airport to Washington, D.C. Dulles Intl Airport flight tickets
Icelandair
Nov 24
LHR8:40 pmLondon Heathrow
26h 45m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Dec 9
IAD7:40 pmWashington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50 amLondon Heathrow
Icelandair
Nov 12
LHR8:40 pmLondon Heathrow
26h 45m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Nov 19
IAD7:40 pmWashington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50 amLondon Heathrow
Icelandair
Mar 8
LHR12:15 pmLondon Heathrow
11h 10m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Mar 29
IAD8:30 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LHR10:55 amLondon Heathrow

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

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

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

Thursday. The cheapest day of the week is typically Thursday. The most expensive is typically Tuesday

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

In the evening. London Heathrow Airport to Washington, D.C. Dulles Intl Airport flights are approximately 17% more expensive in the afternoon than in the evening

What is the cheapest airline that flies to Washington, D.C. Dulles Intl Airport from London Heathrow Airport?

PLAY. PLAY, Scandinavian Airlines, and Iberia are the most popular carriers operating from London Heathrow Airport to Washington, D.C. Dulles Intl Airport

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

60 days before. The cheapest time to buy a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport is approximately 60 days to departure

How many flights depart from London Heathrow Airport to Washington, D.C. Dulles Intl Airport on average per day?

As of November 2024, 19 flights take off from London Heathrow Airport and land in Washington, D.C. Dulles Intl Airport each day. The most common flight departure time for this route is 4:00PM, with 100% of daily flights taking off in the afternoon.

How many flights depart from London Heathrow Airport to Washington, D.C. Dulles Intl Airport on average per week?

As of November 2024, 138 flights take off from London Heathrow Airport and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Monday, with 19% of weekly flights taking off on this day.

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

There are 3 cabin classes available to choose from on London Heathrow Airport 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 Heathrow Airport to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 60% on your flight if you consider stops on a London Heathrow Airport to Washington, D.C. Dulles Intl Airport flight.

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

As of November 2024, prices for London Heathrow Airport to Washington, D.C. Dulles Intl Airport flights are approximately 7% more expensive when compared to flights at the same time last year.

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

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

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

Best Price Found

$291

Fastest flight time

8h 20m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from London Heathrow Airport in the past 72 hours is $291. The best round-trip flight deal from London Heathrow Airport to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $459.
The fastest flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport takes 8h 20m
Direct flights go from London Heathrow Airport to Washington, D.C. Dulles Intl Airport every day.

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

    The distance between London Heathrow and Washington, D.C. Dulles Intl is about 3664.4 mi. In terms of flight time, this usually takes a little over 8h 20m.

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

    Prices for flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport are updated daily.

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

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

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

    The required travel and health documents for your Washington, D.C. Dulles Intl Airport 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 Washington, D.C. Dulles Intl Airport. 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 London Heathrow Airport to Washington, D.C. Dulles Intl Airport?

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


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

Compare and see reviews for airlines that fly from London Heathrow Airport to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom $392Free CancellationRating
7.1
87 reviews
Search PLAY flights
Scandinavian AirlinesPriceFrom $525Free CancellationRating
7.3
1,303 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $529Free CancellationRating
7.2
578 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom $531Free CancellationRating
7.6
666 reviews
Search Virgin Atlantic flights
Aer LingusPriceFrom $538Free CancellationRating
7.1
1,088 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $562Free CancellationRating
6.7
6,842 reviews
Search British Airways flights
IberiaPriceFrom $573Free CancellationRating
7.0
2,673 reviews
Search Iberia flights
United AirlinesPriceFrom $588Free CancellationRating
7.4
9,226 reviews
Search United Airlines flights
DeltaPriceFrom $596Free CancellationRating
8.0
8,829 reviews
Search Delta flights
TAP AIR PORTUGALPriceFrom $598Free CancellationRating
7.1
1,896 reviews
Search TAP AIR PORTUGAL flights
  • Delta Flights From London Heathrow Airport to Washington, D.C. Dulles Intl Airport

    Delta operates around 2 flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport every week. The average price of these flights found in the last 72 hours has been $914, but momondo users have found Delta deals from London Heathrow Airport to Washington, D.C. Dulles Intl Airport from as low as $596 round-trip. Delta has been scored 8.0/10 in 8,829 reviews.

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

    Finnair is also a popular choice for this route. Finnair flight deals for London Heathrow Airport to Washington, D.C. Dulles Intl Airport start from as low as $610 round-trip, depending on your selected dates, with average Finnair deals seen on momondo around $733. Finnair operates 9 flights to Washington, D.C. Dulles Intl Airport from London Heathrow Airport in an average week. Users have rated it 7.7/10 across 1,316 reviews.


Why use momondo?

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

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 Washington, D.C. from London.

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

All flight searches from London to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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 simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from London and alert you when they change.


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?
Sat 11/9
Sat 11/16
Email me momondo's favorite deals

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