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$265+ Cheap flights from Dulles Intl (IAD) to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LHR
Jan 28 — Feb 41
Tue 1/28
Tue 2/4
1 adult, Economy
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The best prices from Washington, D.C. Dulles Intl to London Heathrow are usually found in September or October, booked 48 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Dulles Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$522
(Mytrip)

One-way from

$265
(oojo)

Popular in

June

Cheapest in

September

Average price

$691

Good round-trip deal

$689 or less

Good one-way deal

$440 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-London Heathrow flights.
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From Washington, D.C. Dulles Intl to London Heathrow
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One-way flight from Washington, D.C. Dulles Intl to London Heathrow
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Highest demand for flights based on searches. 17% potential increase in price ($170 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to London Heathrow.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to London Heathrow.
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Find flight deals from Dulles Intl to Heathrow

Cheapest flights from Dulles Intl to Heathrow
Explore the most affordable flight options available from Dulles Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 23, 2025.

This Mytrip deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/298:30 pmIAD - LHR
1 stop10h 25mIcelandair
Sun 5/49:25 pmLHR - IAD
1 stop26h 55mIcelandair
Deal found 1/23$522
This eDestinos deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/55:10 pmIAD - LHR
1 stop10h 55mAer Lingus
Wed 3/128:50 amLHR - IAD
1 stop11h 50mAer Lingus
Deal found 1/23$525
This Gotogate deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/75:00 pmIAD - LHR
1 stop17h 35mTAP AIR PORTUGAL
Tue 5/2011:20 amLHR - IAD
1 stop14h 30mTAP AIR PORTUGAL
Deal found 1/23$530
This eDestinos deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/56:00 pmIAD - LHR
Nonstop7h 15mIberia
Wed 3/124:30 pmLHR - IAD
Nonstop8h 15mIberia
Deal found 1/23$532
This CrystalTravel deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/110:05 pmIAD - LHR
1 stop18h 35mScandinavian Airlines
Tue 4/810:35 amLHR - IAD
2 stops14h 24mScandinavian Airlines
Deal found 1/23$548
This Mytrip deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/247:40 pmIAD - LHR
2 stops20h 20mMultiple Airlines
Sat 3/17:50 amLHR - IAD
2 stops15h 35mMultiple Airlines
Deal found 1/23$559
This Cheapflightsfares deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/117:00 pmIAD - LHR
Nonstop7h 15mBritish Airways
Wed 3/194:30 pmLHR - IAD
Nonstop8h 15mBritish Airways
Deal found 1/22$601
This United Airlines deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/410:35 pmIAD - LHR
Nonstop7h 15mUnited Airlines
Wed 3/1912:05 pmLHR - IAD
1 stop33h 20mUnited Airlines
Deal found 1/23$610
This Delta deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/26:25 pmIAD - LHR
Nonstop7h 30mDelta
Tue 2/116:30 amLHR - IAD
1 stop14h 15mDelta
Deal found 1/23$614
This Finnair deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/29:55 pmIAD - LHR
Nonstop7h 10mFinnair
Tue 2/1112:10 pmLHR - IAD
Nonstop8h 25mFinnair
Deal found 1/23$619
This Virgin Atlantic deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2912:05 pmIAD - LHR
1 stop17h 25mVirgin Atlantic
Wed 2/512:25 pmLHR - IAD
Nonstop8h 40mVirgin Atlantic
Deal found 1/22$631
This Air Canada deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/15:17 pmIAD - LHR
2 stops32h 53mAir Canada
Fri 2/142:30 pmLHR - IAD
1 stop26h 09mAir Canada
Deal found 1/23$670

Find flights from Dulles Intl to Heathrow within your budget

Customize your flight search to find flights from Dulles Intl to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 23, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 4/29

8:30 pm-11:55 am

1 stop10h 25m

London Heathrow

Sun 5/4

9:25 pm-7:20 pm

1 stop26h 55m

$522

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 3/5

5:10 pm-9:05 am

1 stop10h 55m

London Heathrow

Wed 3/12

8:50 am-4:40 pm

1 stop11h 50m

$525

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 5/7

5:00 pm-3:35 pm

1 stop17h 35m

London Heathrow

Tue 5/20

11:20 am-8:50 pm

1 stop14h 30m

$530

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 3/5

6:00 pm-6:15 am

Nonstop7h 15m

London Heathrow

Wed 3/12

4:30 pm-8:45 pm

Nonstop8h 15m

$532

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 4/1

10:05 pm-9:40 pm

1 stop18h 35m

London Heathrow

Tue 4/8

10:35 am-7:59 pm

2 stops14h 24m

$548

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 2/24

7:40 pm-9:00 pm

2 stops20h 20m

London Heathrow

Sat 3/1

7:50 am-6:25 pm

2 stops15h 35m

$559

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 2/11

7:37 pm-10:30 am

1 stop9h 53m

London Heathrow

Fri 3/7

8:40 am-3:45 pm

1 stop12h 05m

$599

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 3/11

7:00 pm-6:15 am

Nonstop7h 15m

London Heathrow

Wed 3/19

4:30 pm-8:45 pm

Nonstop8h 15m

$601

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 3/4

10:35 pm-10:50 am

Nonstop7h 15m

London Heathrow

Wed 3/19

12:05 pm-5:25 pm

1 stop33h 20m

$610

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 2/2

6:25 pm-6:55 am

Nonstop7h 30m

London Heathrow

Tue 2/11

6:30 am-3:45 pm

1 stop14h 15m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Showing 1-10 of 32 results
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Compare providers for flights from Dulles Intl to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Heathrow in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
GotogatePrice Accuracy2 starsTrust Score*2 stars
business-class.comPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Washington, D.C. Dulles Intl Airport to London Heathrow Airport flights

Find out what our experts recommend to make the most of your Washington, D.C. Dulles Intl Airport to London Heathrow Airport trip
Airlines
British Airways

Club Suite offers solo pods with a door for privacy.


World Traveller Plus provides extra seat width and legroom.

Read more about British Airwaysby Gabriel Leigh
United Airlines

Polaris Business Class includes lie-flat seats and Saks Fifth Avenue bedding.


Premium Plus offers extra legroom and upgraded food.

Read more about United Airlinesby Harriet Baskas
Virgin Atlantic

Upper Class includes lie-flat beds and a four-course meal.


Premium cabin offers priority check-in and hot meals on china.

Read more about Virgin Atlanticby Blane Bachelor
Delta

Delta One features 180-degree flat-bed seats with duvets and lumbar pillows.


Free Wi-Fi on international routes for SkyMiles members.

Read more about Deltaby Harriet Baskas
American Airlines

Flagship First offers 21.8” wide seats with a work desk and flat bed.


Flagship Business class features 6’ 7” lay-flat beds and direct aisle access.

Read more about American Airlinesby Marisa Garcia
Lufthansa

Allegris cabins offer lie-flat seats and seat cooling features.


Premium economy includes hard-shell seats with generous recline.

Read more about Lufthansaby Blane Bachelor
Airports
IAD

In the afternoon and evening, IAD's check-in area can be crowded, so arrive early to avoid delays.

Read more about IADby Ramsey Qubein
LHR

For a quick trip to central London, take the Heathrow Express to Paddington Station, the fastest option available.

Read more about LHRby Ramsey Qubein
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines and Delta

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Blane Bachelor

Blane Bachelor

Expert on Virgin Atlantic and Lufthansa

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Marisa Garcia

Marisa Garcia

Expert on American Airlines

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR and IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.

Best time to book a flight from Dulles Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Dulles Intl to Heathrow

Get recent, data-driven insights about flights from Dulles Intl to Heathrow including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Heathrow. Price data was last updated on January 17, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport, you should look to book at least 48 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport (average of $661). Flying from Washington, D.C. Dulles Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,137). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to LHR?

Find hourly flight availability from Dulles Intl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 23, 2025.

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport in the morning. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Heathrow. Price data was last updated on January 21, 2025.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to London Heathrow Airport flight should consider departing on Monday mornings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to London Heathrow Airport

Explore weekly flight availability from Dulles Intl to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 23, 2025.

The most flights from IAD to LHR are scheduled on a Thursday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated January 23, 2025.
To help decide which airline to fly from Washington, D.C. to London, see what other customers have to say about Aer Lingus, Iberia and British Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,508 reviews

Overall

8.0

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,508 reviews
Delta
8.0
Very good
8,508 reviews

Overall

8.0

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,508 reviews

Overall

8.0

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines
7.5
Good
787 reviews
Delta
8.0
Very good
8,508 reviews

Overall

8.0

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,598 reviews
Delta
8.0
Very good
8,508 reviews

Overall

8.0

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic
7.5
Good
663 reviews
Delta
8.0
Very good
8,508 reviews

Overall

8.0

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to London Heathrow Airport round-trip?

    Icelandair, at $522, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to London Heathrow Airport.Alternate airlines to your destination round-trip include Aer Lingus and TAP AIR PORTUGAL. Icelandair is priced at 33% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport one-way?

    One-way options have recently been found by users for as low as $265 on Icelandair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $284 and Scandinavian Airlines from $360 one-way.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

    Consider KLM (88%), Delta (88%) or Virgin Atlantic (88%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to London Heathrow Airport.

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

    On average you can expect to pay $1,533 for a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport. The cheapest flight overall is $394 while the most popular route, (Washington, D.C. Dulles Intl - London Heathrow) is currently priced at $460.

  • Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

    Most of the time, Washington, D.C. Dulles Intl Airport to London Heathrow Airport flights that have layovers will stop in Reykjavik.

  • What are some popular things to do or see while on a layover in Reykjavik?

    Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are the most popular attractions in Reykjavik if you're in need of something to do during your layover. Hallgrímskirkja, Harpa and Laugardalslaug Geothermal Pool are located about 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl if you are interested in checking them out. Travelers can book a car rental at Reykjavik Keflavik Intl for about $51 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to London Heathrow Airport flights?

    Flights departing from Washington, D.C. Dulles Intl Airport and landing in London Heathrow Airport layover in Dublin least frequently.

  • Can I find deals for flights from Dulles Intl to Heathrow that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Heathrow.

  • Can I find deals for business class flights from Dulles Intl to Heathrow?

    Yes. Cheapflights offers flight deals from Dulles Intl to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport (average of $661). Flying from Washington, D.C. Dulles Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,137). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Harrow
Luton
Wembley
Canterbury
Northampton
Gatwick
Horley
Milton Keynes
Dover
Orpington
Watford
Stratford-upon-Avon
Croydon
Borehamwood
Bromley
Folkestone
Ilford

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Top 10 airlines flying from Dulles Intl to Heathrow

Discover the top 10 airlines that operate flights from Dulles Intl to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$370Average$597FlexibilityNo cancel feeOn-time77%
PLAYCheapest$379Average$482FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$398Average$649FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$480Average$665FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$484Average$622FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$537Average$841FlexibilityNo cancel feeOn-time67%
KLMCheapest$546Average$771FlexibilityNo cancel feeOn-time75%
FinnairCheapest$551Average$720FlexibilityNo cancel feeOn-time76%
SWISSCheapest$572Average$789FlexibilityNo cancel feeOn-time79%
IberiaCheapest$577Average$720FlexibilityNo cancel feeOn-time77%
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