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Dulles Intl

$435+ 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IAD
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
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 62 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 November 21, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

August

Cheapest in

January

Round-trip from

$545
(TAP AIR PORTUGAL)

One-way from

$435
(Kiwi.com)
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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High demand for flights, 19% potential price rise
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Best time to find cheap flights, 20% potential price drop
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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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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 November 21, 2024.

This United Airlines deal was found by Cheapflights users on 11/21. 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.
Sat 11/231:45 pmLHR - IAD
1 stop34h 44mUnited Airlines
Sun 11/2410:05 pmIAD - LHR
2 stops28h 05mUnited Airlines
Deal found 11/21$626
This Mytrip deal was found by Cheapflights users on 11/21. 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.
Wed 12/49:55 amLHR - IAD
2 stops33h 40mMultiple Airlines
Tue 12/108:45 pmIAD - LHR
2 stops18h 20mMultiple Airlines
Deal found 11/21$633
This Gotogate deal was found by Cheapflights users on 11/20. 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.
Tue 11/268:40 pmLHR - IAD
1 stop26h 45mIcelandair
Tue 12/107:40 pmIAD - LHR
1 stop18h 50mIcelandair
Deal found 11/20$640
This Gotogate deal was found by Cheapflights users on 11/21. 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.
Mon 12/96:30 pmLHR - IAD
1 stop25h 00mTAP AIR PORTUGAL
Mon 1/137:15 pmIAD - LHR
1 stop22h 25mTAP AIR PORTUGAL
Deal found 11/21$646
This Austrian Airlines deal was found by Cheapflights users on 11/20. 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.
Thu 12/51:35 pmLHR - IAD
1 stop31h 38mAustrian Airlines
Sat 12/74:10 pmIAD - LHR
1 stop34h 15mAustrian Airlines
Deal found 11/20$651
This Gotogate deal was found by Cheapflights users on 11/20. 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.
Thu 12/58:50 amLHR - IAD
1 stop11h 50mAer Lingus
Mon 12/95:10 pmIAD - LHR
1 stop9h 55mAer Lingus
Deal found 11/20$663
This Gotogate deal was found by Cheapflights users on 11/19. 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.
Thu 11/287:30 pmLHR - IAD
1 stop25h 10mScandinavian Airlines
Sat 2/15:10 pmIAD - LHR
1 stop11h 10mScandinavian Airlines
Deal found 11/19$673
This The Travel House deal was found by Cheapflights users on 11/21. 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.
Fri 11/224:20 pmLHR - IAD
Nonstop8h 55mLufthansa
Sat 11/305:56 pmIAD - LHR
1 stop32h 14mLufthansa
Deal found 11/21$685
This The Travel House deal was found by Cheapflights users on 11/21. 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.
Tue 12/34:30 pmLHR - IAD
2 stops25h 32mFinnair
Thu 12/129:55 pmIAD - LHR
Nonstop7h 10mFinnair
Deal found 11/21$747
This Delta deal was found by Cheapflights users on 11/19. 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.
Wed 12/1112:25 pmLHR - IAD
Nonstop8h 40mDelta
Mon 1/136:45 pmIAD - LHR
Nonstop7h 30mDelta
Deal found 11/19$751
This Air Canada deal was found by Cheapflights users on 11/20. 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.
Wed 12/46:50 amLHR - IAD
2 stops13h 23mAir Canada
Wed 12/113:55 pmIAD - LHR
1 stop10h 15mAir Canada
Deal found 11/20$783
This Virgin Atlantic deal was found by Cheapflights users on 11/21. 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.
Tue 12/1012:25 pmLHR - IAD
Nonstop8h 40mVirgin Atlantic
Fri 1/106:45 pmIAD - LHR
Nonstop7h 30mVirgin Atlantic
Deal found 11/21$827

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 2,612,795 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 2/17

6:30 pm-2:30 pm

1 stop25h 00m

Washington, D.C. Dulles Intl

Sat 2/22

5:30 pm-3:30 pm

1 stop17h 00m

$545

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 1/13

12:15 pm-6:25 pm

1 stop11h 10m

Washington, D.C. Dulles Intl

Mon 1/20

7:40 pm-10:50 am

1 stop10h 10m

$556

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 3/5

7:30 am-5:00 pm

1 stop14h 30m

Washington, D.C. Dulles Intl

Tue 3/11

7:10 pm-3:00 pm

1 stop15h 50m

$557

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 3/15

6:00 pm-9:46 am

1 stop19h 46m

Washington, D.C. Dulles Intl

Sun 3/23

11:50 pm-11:05 am

Nonstop7h 15m

$613

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 12/5

1:35 pm-4:13 pm

1 stop31h 38m

Washington, D.C. Dulles Intl

Sat 12/7

4:10 pm-7:25 am

1 stop34h 15m

$651

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 1/10

6:40 am-3:40 pm

1 stop14h 00m

Washington, D.C. Dulles Intl

Fri 1/24

5:10 pm-4:25 pm

2 stops18h 15m

$653

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 12/4

8:50 am-3:40 pm

1 stop11h 50m

Washington, D.C. Dulles Intl

Wed 12/11

5:10 pm-9:05 am

1 stop10h 55m

$669

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 2/19

6:30 am-3:45 pm

1 stop14h 15m

Washington, D.C. Dulles Intl

Mon 2/24

6:45 pm-7:15 am

Nonstop7h 30m

$700

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 1/14

8:40 am-3:45 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Wed 1/22

6:45 pm-7:15 am

Nonstop7h 30m

$740

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 3/12

4:30 pm-8:45 pm

Nonstop8h 15m

Washington, D.C. Dulles Intl

Wed 5/7

5:55 pm-6:15 am

Nonstop7h 20m

$742

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 16 results
1
2

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 November.
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*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
Thrive TravelPrice 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.

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 November 15, 2024.

The best time to book flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport is 62 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport (average of $299). Flying from London Heathrow Airport to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $377). 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 November 21, 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 20% 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 November 18, 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. Tuesday afternoons 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 November 21, 2024.

The most flights from LHR to IAD are scheduled on a Wednesday (26 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (21 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 November 21, 2024.
To help decide which airline to fly from London to Washington, D.C., see what other customers have to say about TAP AIR PORTUGAL, Icelandair and Lufthansa. 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
8,755 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

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
8,755 reviews
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

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
1,349 reviews
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

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
1,300 reviews
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

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
804 reviews
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

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

Scandinavian Airlines
7.3
Good
1,294 reviews
Delta
8.0
Very good
8,755 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

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?

    TAP AIR PORTUGAL, at $545, 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 Icelandair and Lufthansa. These flights start at 32% 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 $469 on Icelandair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $524 and Aer Lingus from $559 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 (82%), Austrian Airlines (82%) or Copa Airlines (82%) 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 $1,450 for a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $672 while the most popular route, (London Heathrow - Washington, D.C. Dulles Intl) is currently priced at $485.

  • 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport (average of $299). Flying from London Heathrow Airport to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $377). 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 2,612,795 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$392Average$560FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$525Average$682FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$529Average$838FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$538Average$808FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$562Average$864FlexibilityNo cancel feeOn-time72%
IberiaCheapest$583Average$784FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$590Average$875FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$592Average$887FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$598Average$814FlexibilityNo cancel feeOn-timeN/A
Austrian AirlinesCheapest$608Average$858FlexibilityNo cancel feeOn-time78%
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