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Cheap flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport from $243

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 3/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
7:30 am - 6:00 pmLHR-IAD
14h 30m1 stop
7:10 pm - 2:55 pmIAD-LHR
15h 45m1 stop
Wed, Mar 12 - Sat, Mar 15
6:30 pm - 2:30 pmLHR-IAD
25h 00m1 stop
5:30 pm - 10:40 pmIAD-LHR
24h 10m1 stop
$494TAP AIR PORTUGAL
Find Deal
Mon, Feb 17 - Sat, Feb 22
12:15 pm - 6:25 pmLHR-IAD
11h 10m1 stop
7:40 pm - 10:50 amIAD-LHR
10h 10m1 stop
$556Icelandair
Find Deal
Mon, Jan 13 - Mon, Jan 20
12:15 pm - 6:25 pmLHR-IAD
11h 10m1 stop
7:40 pm - 10:50 amIAD-LHR
10h 10m1 stop
$559Icelandair
Find Deal
Mon, Jan 13 - Mon, Jan 20
6:00 pm - 9:46 amLHR-IAD
19h 46m1 stop
11:50 pm - 11:05 amIAD-LHR
7h 15mnonstop
$613Lufthansa
Find Deal
Sat, Mar 15 - Sun, Mar 23
6:00 pm - 9:46 amLHR-IAD
20h 46m1 stop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$617Lufthansa
Find Deal
Sat, Jan 25 - Sat, Feb 8
8:50 am - 3:40 pmLHR-IAD
11h 50m1 stop
5:10 pm - 8:05 amIAD-LHR
9h 55m1 stop
$669Aer Lingus
Find Deal
Wed, Dec 4 - Tue, Dec 10
7:50 am - 3:40 pmLHR-IAD
12h 50m1 stop
5:10 pm - 9:05 amIAD-LHR
10h 55m1 stop
$670Aer Lingus
Find Deal
Wed, Dec 4 - Wed, Dec 11
6:30 am - 3:45 pmLHR-IAD
14h 15m1 stop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$700Delta
Find Deal
Wed, Feb 19 - Mon, Feb 24
6:20 am - 4:15 pmLHR-IAD
14h 55m1 stop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$704Delta
Find Deal
Mon, Jan 13 - Tue, Jan 21
8:40 pm - 6:00 pmLHR-IAD
25h 20m1 stop
Fri, Mar 14
9:00 pm - 6:00 pmLHR-IAD
25h 00m2 stops
Fri, Mar 14
7:35 am - 5:00 pmLHR-IAD
14h 25m1 stop
Mon, Mar 3
6:25 am - 5:00 pmLHR-IAD
39h 35m2 stops
Tue, Mar 4
8:40 pm - 6:25 pmLHR-IAD
26h 45m1 stop
$471Icelandair
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Sat, Feb 1
12:15 pm - 6:25 pmLHR-IAD
11h 10m1 stop
$514Icelandair
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Fri, Jan 10
7:55 pm - 9:00 pmLHR-IAD
30h 05m1 stop
$524TAP AIR PORTUGAL
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Sat, Jan 25
6:30 pm - 2:30 pmLHR-IAD
25h 00m1 stop
$558TAP AIR PORTUGAL
Find Deal
Mon, Dec 9
8:50 am - 3:40 pmLHR-IAD
11h 50m1 stop
$559Aer Lingus
Find Deal
Wed, Dec 11
8:50 am - 3:40 pmLHR-IAD
11h 50m1 stop
$562Aer Lingus
Find Deal
Mon, Dec 9
8:40 pm - 6:25 pmLHR-IAD
26h 45m1 stop
7:40 pm - 7:30 pmIAD-LHR
18h 50m1 stop
$640Icelandair
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Tue, Nov 26 - Tue, Dec 10
1:45 pm - 7:29 pmLHR-IAD
34h 44m1 stop
10:30 pm - 11:05 amIAD-LHR
7h 35mnonstop
$645United Airlines
Find Deal
Sat, Nov 23 - Sun, Nov 24
8:50 am - 3:40 pmLHR-IAD
11h 50m1 stop
5:10 pm - 9:05 amIAD-LHR
10h 55m1 stop
$662Aer Lingus
Find Deal
Tue, Nov 26 - Sat, Dec 7
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
5:56 pm - 7:10 amIAD-LHR
32h 14m1 stop
$685Lufthansa
Find Deal
Fri, Nov 22 - Sat, Nov 30
9:10 am - 8:18 pmLHR-IAD
16h 08m1 stop
5:56 pm - 7:10 amIAD-LHR
32h 14m1 stop
$690Lufthansa
Find Deal
Fri, Nov 22 - Sat, Nov 30
7:50 am - 3:40 pmLHR-IAD
12h 50m1 stop
9:15 pm - 11:25 amIAD-LHR
9h 10m1 stop
$710Aer Lingus
Find Deal
Sun, Nov 24 - Tue, Nov 26
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$880Delta
Find Deal
Tue, Nov 26 - Tue, Dec 10
6:30 am - 3:45 pmLHR-IAD
14h 15m1 stop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$911Delta
Find Deal
Tue, Nov 26 - Tue, Dec 10
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$999Virgin Atlantic
Find Deal
Sun, Nov 24 - Mon, Jan 13
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$1,009Virgin Atlantic
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
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$740Virgin Atlantic
Find Deal
Wed, Jan 15 - Wed, Jan 22
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$748Virgin Atlantic
Find Deal
Wed, Jan 8 - Wed, Jan 15
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$750British Airways
Find Deal
Mon, Feb 3 - Wed, Feb 19
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
10:15 pm - 10:50 amIAD-LHR
7h 35mnonstop
$767Lufthansa
Find Deal
Fri, Jan 31 - Mon, Feb 3
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$768British Airways
Find Deal
Mon, Jan 13 - Mon, Jan 20
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$777Lufthansa
Find Deal
Fri, Dec 6 - Wed, Dec 11
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$869United Airlines
Find Deal
Wed, Dec 4 - Tue, Dec 31
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
10:15 pm - 10:50 amIAD-LHR
7h 35mnonstop
$922United Airlines
Find Deal
Tue, Dec 24 - Tue, Dec 31

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

Our best Delta deals on London Heathrow Airport to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Feb 19
LHR6:30 amLondon Heathrow
14h 15m
1 stop
IAD3:45 pmWashington, D.C. Dulles Intl
Feb 24
IAD6:45 pmWashington, D.C. Dulles Intl
7h 30m
LHR7:15 amLondon Heathrow
Delta
Jan 13
LHR6:20 amLondon Heathrow
14h 55m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
Jan 21
IAD6:25 pmWashington, D.C. Dulles Intl
7h 30m
LHR6:55 amLondon Heathrow
Delta
Jan 13
LHR9:00 amLondon Heathrow
12h 15m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
Jan 21
IAD6:25 pmWashington, D.C. Dulles Intl
7h 30m
LHR6:55 amLondon 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
Jan 13
LHR12:15 pmLondon Heathrow
11h 10m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Jan 20
IAD7:40 pmWashington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50 amLondon Heathrow
Icelandair
Jan 13
LHR12:15 pmLondon Heathrow
11h 10m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Jan 20
IAD7:40 pmWashington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50 amLondon Heathrow
Icelandair
Jan 10
LHR12:15 pmLondon Heathrow
11h 10m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Jan 24
IAD7:40 pmWashington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50 amLondon Heathrow

See travel insights to Washington, D.C. from

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 to Washington, D.C. Dulles Intl Airport?

In general, January is the cheapest month to fly from London Heathrow Airport 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 $655. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $657.

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 $743. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Washington, D.C. Dulles Intl Airport for around $861.

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 Heathrow Airport 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 $904 on average. Flights to Washington, D.C. Dulles Intl Airport from London Heathrow Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Fly from London Heathrow to Washington, D.C. Dulles Intl for the best London Heathrow - 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 56 days in advance when prices tend to average $759. 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 Heathrow Airport for as low as $682 on momondo.

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

There are 4 cabin classes available to choose from on London Heathrow 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 Heathrow Airport 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 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

$243

Fastest flight time

8h 15m

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 $243. 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 $485.
The fastest flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport takes 8h 15m
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 15m.

  • 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
88 reviews
Search PLAY flights
Scandinavian AirlinesPriceFrom $525Free CancellationRating
7.3
1,294 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $529Free CancellationRating
7.2
553 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
2,661 reviews
Search Iberia flights
United AirlinesPriceFrom $590Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
British AirwaysPriceFrom $592Free CancellationRating
6.6
6,831 reviews
Search British Airways flights
TAP AIR PORTUGALPriceFrom $598Free CancellationRating
7.1
1,891 reviews
Search TAP AIR PORTUGAL flights
Austrian AirlinesPriceFrom $608Free CancellationRating
7.6
804 reviews
Search Austrian Airlines flights
  • Delta Flights From London Heathrow Airport to Washington, D.C. Dulles Intl Airport

    Delta operates around 3 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 $922, but momondo users have found Delta deals from London Heathrow Airport to Washington, D.C. Dulles Intl Airport from as low as $608 round-trip. Delta has been scored 8.0/10 in 8,755 reviews.

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

    Austrian Airlines is also a popular choice for this route. Austrian Airlines flight deals for London Heathrow Airport to Washington, D.C. Dulles Intl Airport start from as low as $608 round-trip, depending on your selected dates, with average Austrian Airlines deals seen on momondo around $858. Austrian Airlines operates 14 flights to Washington, D.C. Dulles Intl Airport from London Heathrow Airport in an average week. Users have rated it 7.6/10 across 804 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.


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