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Dulles Intl

$462+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IAD
déc. 28 — janv. 41
sam. 12/28
sam. 1/4
1 adult, Economy
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The best prices from London Heathrow to Washington, D.C. Dulles Intl are usually found in January or February, booked 60 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

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 décembre 23, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$556
(Justfly.com)

One-way from

$462
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$883
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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High demand for flights, 11% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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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 décembre 23, 2024.

This ChecknFly deal was found by Cheapflights users on 12/22. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 12/283:00 pmLHR - IAD
1 stop29h 13mLufthansa
mer. 1/85:30 pmIAD - LHR
1 stop17h 50mLufthansa
Deal found 12/22$604
This British Airways deal was found by Cheapflights users on 12/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/304:30 pmLHR - IAD
Nonstop8h 15mBritish Airways
lun. 5/127:25 pmIAD - LHR
Nonstop7h 20mBritish Airways
Deal found 12/22$610
This United Airlines deal was found by Cheapflights users on 12/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/308:30 amLHR - IAD
1 stop16h 50mUnited Airlines
jeu. 1/168:45 pmIAD - LHR
1 stop14h 35mUnited Airlines
Deal found 12/22$629
This Virgin Atlantic deal was found by Cheapflights users on 12/22. 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.
lun. 12/304:10 pmLHR - IAD
1 stop13h 28mVirgin Atlantic
lun. 3/247:45 pmIAD - LHR
Nonstop7h 30mVirgin Atlantic
Deal found 12/22$632
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/304:10 pmLHR - IAD
1 stop13h 28mDelta
mer. 4/26:10 pmIAD - LHR
Nonstop7h 35mDelta
Deal found 12/22$636
This Iberia deal was found by Cheapflights users on 12/22. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/304:30 pmLHR - IAD
Nonstop8h 15mIberia
mer. 4/25:50 pmIAD - LHR
Nonstop7h 25mIberia
Deal found 12/22$642
This TravelUp deal was found by Cheapflights users on 12/22. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/304:10 pmLHR - IAD
1 stop13h 28mAir France
ven. 5/96:10 pmIAD - LHR
Nonstop7h 35mAir France
Deal found 12/22$646
This TravelUp deal was found by Cheapflights users on 12/22. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/304:10 pmLHR - IAD
1 stop13h 28mKLM
ven. 5/97:05 pmIAD - LHR
1 stop10h 10mKLM
Deal found 12/22$659
This Austrian Airlines deal was found by Cheapflights users on 12/22. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/309:05 amLHR - IAD
1 stop34h 30mAustrian Airlines
jeu. 1/166:25 pmIAD - LHR
Nonstop7h 15mAustrian Airlines
Deal found 12/22$660
This FlightHub deal was found by Cheapflights users on 12/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/304:30 pmLHR - IAD
Nonstop8h 15mMultiple Airlines
mer. 5/1410:40 pmIAD - LHR
Nonstop7h 25mMultiple Airlines
Deal found 12/22$711
This Air Canada deal was found by Cheapflights users on 12/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 12/292:30 pmLHR - IAD
1 stop24h 16mAir Canada
dim. 1/2610:35 amIAD - LHR
2 stops15h 35mAir Canada
Deal found 12/22$714
This Brussels Airlines deal was found by Cheapflights users on 12/22. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/315:50 pmLHR - IAD
1 stop25h 45mBrussels Airlines
lun. 1/65:35 pmIAD - LHR
1 stop35h 05mBrussels Airlines
Deal found 12/22$718

Find flights from Heathrow to Dulles Intl within your budget

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 décembre 23, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

mer. 5/7

1:05 pm-7:15 pm

1 stop11h 10m

Washington, D.C. Dulles Intl

lun. 5/12

8:30 pm-11:55 am

1 stop10h 25m

$556

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

ven. 1/10

4:20 pm-8:15 pm

Nonstop8h 55m

Washington, D.C. Dulles Intl

sam. 1/11

6:00 pm-7:25 am

1 stop32h 25m

$568

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

lun. 1/27

8:40 am-3:45 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

lun. 2/3

6:45 pm-7:15 am

Nonstop7h 30m

$574

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

mar. 1/21

12:25 pm-4:05 pm

Nonstop8h 40m

Washington, D.C. Dulles Intl

mar. 1/28

9:20 pm-9:30 am

Nonstop7h 10m

$592

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

mer. 2/5

6:30 am-4:26 pm

2 stops14h 56m

Washington, D.C. Dulles Intl

mer. 2/19

8:20 am-7:10 am

2 stops17h 50m

$594

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

lun. 1/27

6:50 am-3:13 pm

2 stops13h 23m

Washington, D.C. Dulles Intl

lun. 2/3

3:55 pm-7:10 am

1 stop10h 15m

$599

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

sam. 3/15

3:00 pm-3:13 pm

1 stop28h 13m

Washington, D.C. Dulles Intl

dim. 3/23

6:00 am-8:35 pm

1 stop10h 35m

$600

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

dim. 1/19

8:25 pm-3:45 pm

1 stop24h 20m

Washington, D.C. Dulles Intl

dim. 1/26

6:59 pm-7:55 am

1 stop31h 56m

$604

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

mer. 2/12

6:00 am-3:30 pm

1 stop14h 30m

Washington, D.C. Dulles Intl

mar. 2/18

5:30 pm-8:05 am

1 stop33h 35m

$610

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

dim. 1/19

5:50 pm-2:35 pm

1 stop25h 45m

Washington, D.C. Dulles Intl

dim. 1/26

5:20 pm-9:40 am

1 stop35h 20m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Showing 1-10 of 30 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
Thrive TravelPrice Accuracy3 starsTrust Score*1 star

*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.

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.

Travel insights for flights from Heathrow to Dulles Intl

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

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 December 20, 2024.

The best time to book flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport is 60 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 $389). 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 décembre 23, 2024.

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 22% versus a flight in the afternoon.

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 December 16, 2024.

Travelers seeking maximum savings on their London Heathrow Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Thursday mornings when fares are most often at their lowest. Wednesday 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 décembre 23, 2024.

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 décembre 23, 2024.
To help decide which airline to fly from London to Washington, D.C., see what other customers have to say about Austrian Airlines, Virgin Atlantic and Air France. 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
8,588 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,588 reviews
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,345 reviews
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.7
Good
1,285 reviews
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines
7.6
Good
786 reviews
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.6
Good
1,605 reviews
Delta
8.0
Very good
8,588 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    Icelandair, at $556, 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 Virgin Atlantic. These flights start at 31% 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 $470 on Icelandair. Other airlines that offer cheap prices include Aer Lingus from $515 and WestJet from $568 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 Air Canada (89%), Austrian Airlines (89%) or Copa Airlines (89%) 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 $1,601 for a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $706 while the most popular route, (London Heathrow - Washington, D.C. Dulles Intl) is currently priced at $502.

  • 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 $389). 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

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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 décembre 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$348Average$551FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$444Average$936FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$511Average$815FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$527Average$743FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$529Average$841FlexibilityNo cancel feeOn-time76%
IberiaCheapest$586Average$954FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$599Average$973FlexibilityNo cancel feeOn-time72%
Austrian AirlinesCheapest$608Average$858FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$619Average$728FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$621Average$897FlexibilityNo cancel feeOn-time70%
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