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Dulles Intl

$403+ Cheap flights from Heathrow (LHR) to Dulles Intl (IAD)

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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IAD
mar 30 — abr 61
dom 3/30
dom 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Washington, D.C. Dulles Intl are usually found in February or November, booked 68 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Cheap flight deals from Heathrow to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Dulles Intl (IAD). 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 março 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$552
(ChecknFly)

One-way from

$403
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$755

Good round-trip deal

$693 or less

Good one-way deal

$795 or less
Provider with most accurate pricing for London Heathrow-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Washington, D.C. Dulles Intl flights.
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From London Heathrow to Washington, D.C. Dulles Intl
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One-way flight from London Heathrow to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 11% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from London Heathrow to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from London Heathrow to Washington, D.C. Dulles Intl.
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Find flight deals from Heathrow to Dulles Intl

Cheapest flights from Heathrow to Dulles Intl
Explore the most affordable flight options available from Heathrow to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on março 25, 2025.

This ChecknFly deal was found by Cheapflights users on 3/23. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 4/2912:15 pmLHR - IAD
Nonstop8h 10mLufthansa
sáb 5/1010:26 pmIAD - LHR
1 stop17h 14mLufthansa
Deal found 3/23$552
This The Travel House deal was found by Cheapflights users on 3/24. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 4/252:10 pmLHR - IAD
1 stop29h 01mAustrian Airlines
sáb 4/265:47 pmIAD - LHR
1 stop36h 23mAustrian Airlines
Deal found 3/24$553
This Gotogate deal was found by Cheapflights users on 3/24. 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.
ter 3/258:40 pmLHR - IAD
1 stop26h 45mIcelandair
seg 3/318:30 pmIAD - LHR
1 stop10h 25mIcelandair
Deal found 3/24$560
This Gotogate deal was found by Cheapflights users on 3/24. 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.
seg 9/1510:20 amLHR - IAD
1 stop14h 39mScandinavian Airlines
seg 9/2210:05 pmIAD - LHR
1 stop15h 25mScandinavian Airlines
Deal found 3/24$580
This United Airlines deal was found by Cheapflights users on 3/24. 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.
sex 3/284:20 pmLHR - IAD
Nonstop8h 20mUnited Airlines
sáb 3/295:52 pmIAD - LHR
1 stop31h 38mUnited Airlines
Deal found 3/24$631
This The Travel House deal was found by Cheapflights users on 3/24. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 3/2811:05 amLHR - IAD
2 stops32h 30mBrussels Airlines
sáb 3/295:45 pmIAD - LHR
1 stop35h 40mBrussels Airlines
Deal found 3/24$658
This TravelUp deal was found by Cheapflights users on 3/24. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 5/28:40 amLHR - IAD
1 stop12h 35mMultiple Airlines
seg 5/510:15 pmIAD - LHR
Nonstop7h 25mMultiple Airlines
Deal found 3/24$668
This World Air Fares deal was found by Cheapflights users on 3/24. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 5/97:40 amLHR - IAD
1 stop13h 10mBritish Airways
sex 5/1610:40 pmIAD - LHR
Nonstop7h 25mBritish Airways
Deal found 3/24$685
This Flightnetwork deal was found by Cheapflights users on 3/24. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 4/248:40 amLHR - IAD
1 stop12h 35mSWISS
qua 4/308:45 pmIAD - LHR
1 stop14h 40mSWISS
Deal found 3/24$695
This EaseMyTrip deal was found by Cheapflights users on 3/24. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 4/2412:35 pmLHR - IAD
Nonstop8h 25mVirgin Atlantic
dom 4/275:50 pmIAD - LHR
Nonstop7h 30mVirgin Atlantic
Deal found 3/24$700
This TravelUp deal was found by Cheapflights users on 3/24. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 4/213:15 pmLHR - IAD
1 stop14h 13mAir France
seg 4/281:44 pmIAD - LHR
1 stop14h 11mAir France
Deal found 3/24$705
This American Airlines deal was found by Cheapflights users on 3/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 4/2911:30 amLHR - IAD
1 stop32h 30mAmerican Airlines
ter 5/67:25 pmIAD - LHR
Nonstop7h 20mAmerican Airlines
Deal found 3/24$716

Cheapflights Fare Finder

Customize your flight search to find flights from Heathrow to Dulles Intl 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 março 25, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Heathrow

Fly to

Dulles Intl

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

ter 4/29

12:15 pm-3:25 pm

Nonstop8h 10m

Washington, D.C. Dulles Intl

sáb 5/10

10:26 pm-8:40 pm

1 stop17h 14m

$552

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

sex 4/25

2:10 pm-2:11 pm

1 stop29h 01m

Washington, D.C. Dulles Intl

sáb 4/26

5:47 pm-11:10 am

1 stop36h 23m

$553

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

seg 9/15

10:20 am-7:59 pm

1 stop14h 39m

Washington, D.C. Dulles Intl

seg 9/22

10:05 pm-6:30 pm

1 stop15h 25m

$580

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

qui 4/24

1:05 pm-7:20 pm

1 stop11h 15m

Washington, D.C. Dulles Intl

qua 4/30

8:30 pm-8:20 pm

1 stop18h 50m

$584

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

qua 5/7

6:30 am-8:50 pm

2 stops19h 20m

Washington, D.C. Dulles Intl

seg 8/4

5:45 pm-10:20 am

1 stop11h 35m

$666

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

sex 5/2

8:40 am-3:35 pm

1 stop11h 55m

Washington, D.C. Dulles Intl

seg 5/5

5:50 pm-6:20 am

Nonstop7h 30m

$668

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

sex 5/9

7:40 am-3:50 pm

1 stop13h 10m

Washington, D.C. Dulles Intl

sex 5/16

10:40 pm-11:05 am

Nonstop7h 25m

$685

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

qui 5/8

8:40 am-4:15 pm

1 stop12h 35m

Washington, D.C. Dulles Intl

qui 5/15

10:15 pm-10:40 am

Nonstop7h 25m

$688

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

qui 4/24

8:40 am-4:15 pm

1 stop12h 35m

Washington, D.C. Dulles Intl

qua 4/30

8:45 pm-4:25 pm

1 stop14h 40m

$695

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

qui 4/24

12:35 pm-4:00 pm

Nonstop8h 25m

Washington, D.C. Dulles Intl

dom 4/27

5:50 pm-6:20 am

Nonstop7h 30m

$700

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 22 results
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Compare providers for flights from Heathrow to Dulles Intl

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 Heathrow to Dulles Intl in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
oojoPrice Accuracy3 starsTrust Score*2 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
Thrive TravelPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust 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 London Heathrow Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Washington, D.C. Dulles Intl 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 London Heathrow Airport-Washington, D.C. Dulles Intl 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 London Heathrow Airport to Washington, D.C. Dulles Intl Airport flights

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.
Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Washington, D.C. Dulles Intl Airport trip
Airlines
British Airways

BA's Club Suite offers private pods with a door, ensuring a more exclusive experience.


World Traveller Plus provides extra seat width and legroom, ideal for long-haul comfort.

Read more about British Airwaysby Gabriel Leigh
United Airlines

Polaris offers lie-flat seats with noise-reducing headphones and large entertainment screens for comfort.


United's Premium Plus seats provide extra legroom, upgraded meals, and two checked bags on international flights.

Read more about United Airlinesby Harriet Baskas
Airports
LHR

For a smooth departure from Heathrow, arrive early to enjoy lounges like Cathay Pacific's with its famous dan dan noodles.

Read more about LHRby Ramsey Qubein
IAD

Upon arrival at Dulles, use the Silver Line Metro for a cost-effective ride to downtown Washington, D.C.

Read more about IADby 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

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
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

Best time to book a flight from Heathrow to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Heathrow 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.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Dulles Intl. Price data was last updated on March 21, 2025.

The best time to book flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport is 68 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from London Heathrow Airport to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $387). 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 LHR to IAD?

Find hourly flight availability from Heathrow to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated março 25, 2025.

When flying from London Heathrow Airport to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 26% versus a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Heathrow to Dulles Intl. Price data was last updated on March 23, 2025.

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

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

Explore weekly flight availability from Heathrow to Dulles Intl. 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 março 25, 2025.

The most flights from LHR to IAD are scheduled on a Monday (26 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (22 on average).

Rainfall in Dulles Intl by month

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

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

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

If weather is an important factor for your trip to Washington, D.C. Dulles Intl 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated março 25, 2025.
To help decide which airline to fly from London to Washington, D.C., see what other customers have to say about Austrian Airlines, SWISS and Air France. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.5
Good
769 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.8

Entertainment

6.7

Overall

7.5

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Austrian Airlines
7.5
Good
769 reviews
Austrian Airlines
7.5
Good
769 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.8

Entertainment

6.7

Overall

7.5

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
SWISS
7.5
Good
1,569 reviews
Austrian Airlines
7.5
Good
769 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.8

Entertainment

6.7

Overall

7.5

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Air France
7.4
Good
1,423 reviews
Austrian Airlines
7.5
Good
769 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.8

Entertainment

6.7

Overall

7.5

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
United Airlines
7.4
Good
8,605 reviews
Austrian Airlines
7.5
Good
769 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.8

Entertainment

6.7

Overall

7.5

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Virgin Atlantic
7.4
Good
634 reviews
Austrian Airlines
7.5
Good
769 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.8

Entertainment

6.7

Overall

7.5

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Dulles Intl. 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 London Heathrow Airport to Washington, D.C. Dulles Intl Airport round-trip?

    Lufthansa, at $552, was found to be the cheapest airline from London Heathrow Airport to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include Austrian Airlines and Scandinavian Airlines. These flights start at 33% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $433 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Icelandair from $553 and Aer Lingus from $577 one-way.

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

    No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport consider choosing KLM (90%), Air France (90%) or Delta (90%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $1,588 for a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $619 while the most popular route, (London Heathrow - Washington, D.C. Dulles Intl) is currently priced at $487.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Dulles Intl 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 London Heathrow Airport to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from London Heathrow Airport to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $387). 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.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Tysons
Springfield
Rockville
Woodbridge
Gaithersburg
Fredericksburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Gettysburg
National Harbor
Oxon Hill

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Heathrow to Dulles Intl

Discover the top 10 airlines that operate flights from Heathrow to Dulles Intl. 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 março 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$390Average$784FlexibilityNo cancel feeOn-time77%
PLAYCheapest$392Average$560FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$475Average$953FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$529Average$787FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$564Average$804FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$586Average$977FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$594Average$885FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$619Average$728FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$660Average$823FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$691Average$941FlexibilityNo cancel feeOn-time76%
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