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$442+ Cheap flights from Heathrow (LHR) to Washington

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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
1 adult, Economy
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Cheap flight deals from Heathrow to Washington

Keep the following information in mind while searching for Heathrow to Washington flight deals. Data was last updated julio 31, 2025.

Round-trip from

$650
(ChecknFly)

One-way from

$442
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$950

Good round-trip deal

$743 or less

Good one-way deal

$802 or less
From London Heathrow to Washington
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One-way flight from London Heathrow to Washington
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Highest demand for flights based on searches. 15% potential increase in price ($132 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 July 2025
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Price to beat on a round-trip flight from London Heathrow to Washington.
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Price to beat on a one-way flight from London Heathrow to Washington.
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Find flight deals from Heathrow to Washington

Cheapest flights from Heathrow to Washington
Explore the most affordable flight options available from Heathrow to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

This ChecknFly deal was found by Cheapflights users on 7/30. 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.
mié. 8/279:50 amLHR - SEA
Nonstop9h 45mFinnair
jue. 9/116:00 amSEA - LHR
1 stop19h 05mFinnair
Deal found 7/30$650
This lol.travel deal was found by Cheapflights users on 7/31. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/81:25 pmLHR - SEA
Nonstop10h 05mVirgin Atlantic
lun. 9/225:35 pmSEA - LHR
Nonstop9h 45mVirgin Atlantic
Deal found 7/31$651
This Cheapflightsfares deal was found by Cheapflights users on 7/31. 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.
mié. 9/104:30 pmLHR - SEA
Nonstop9h 50mBritish Airways
lun. 9/158:20 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 7/31$652
This Austrian Airlines deal was found by Cheapflights users on 7/30. 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.
vie. 11/286:00 amLHR - SEA
2 stops22h 54mAustrian Airlines
lun. 2/238:00 amSEA - LHR
2 stops39h 55mAustrian Airlines
Deal found 7/30$654
This The Travel House deal was found by Cheapflights users on 7/29. 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.
mié. 8/276:05 pmLHR - SEA
2 stops51h 45mScandinavian Airlines
mié. 9/104:00 pmSEA - LHR
2 stops21h 35mScandinavian Airlines
Deal found 7/29$655
This Gotogate deal was found by Cheapflights users on 7/30. 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.
lun. 9/19:30 amLHR - SEA
1 stop19h 15mAir Canada
lun. 9/1510:00 amSEA - LHR
2 stops15h 35mAir Canada
Deal found 7/30$657
This Expedia deal was found by Cheapflights users on 7/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/279:50 amLHR - SEA
Nonstop9h 45mMultiple Airlines
mié. 9/103:00 pmSEA - LHR
1 stop13h 15mMultiple Airlines
Deal found 7/30$658
This United Airlines deal was found by Cheapflights users on 7/31. 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.
mié. 8/279:30 amLHR - SEA
1 stop19h 15mUnited Airlines
mar. 9/97:10 amSEA - LHR
2 stops17h 10mUnited Airlines
Deal found 7/31$659
This Delta deal was found by Cheapflights users on 7/31. 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.
mié. 8/279:55 amLHR - SEA
1 stop14h 00mDelta
mar. 9/98:25 pmSEA - LHR
Nonstop9h 50mDelta
Deal found 7/31$664
This Lufthansa deal was found by Cheapflights users on 7/29. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/246:30 amLHR - SEA
1 stop13h 25mLufthansa
lun. 11/32:00 pmSEA - LHR
1 stop16h 50mLufthansa
Deal found 7/29$671
This Air France deal was found by Cheapflights users on 7/31. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2812:20 pmLHR - SEA
Nonstop10h 40mAir France
mar. 11/115:20 pmSEA - LHR
Nonstop9h 40mAir France
Deal found 7/31$681
This American Airlines deal was found by Cheapflights users on 7/29. 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.
lun. 9/19:50 amLHR - SEA
Nonstop9h 45mAmerican Airlines
lun. 9/151:30 pmSEA - LHR
Nonstop9h 20mAmerican Airlines
Deal found 7/29$683

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Washington 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 julio 31, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Washington that are best for you.

Fly from

Heathrow

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

mié. 8/27

9:50 am-11:35 am

Nonstop9h 45m

Seattle/Tacoma Intl

jue. 9/11

6:00 am-9:05 am

1 stop19h 05m

$650

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

lun. 9/8

1:25 pm-3:30 pm

Nonstop10h 05m

Seattle/Tacoma Intl

lun. 9/22

5:35 pm-11:20 am

Nonstop9h 45m

$651

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

mié. 9/10

9:50 am-11:35 am

Nonstop9h 45m

Seattle/Tacoma Intl

lun. 9/15

1:30 pm-6:50 am

Nonstop9h 20m

$652

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

lun. 9/1

9:30 am-8:45 pm

1 stop19h 15m

Seattle/Tacoma Intl

lun. 9/15

7:15 am-9:35 am

1 stop18h 20m

$654

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

mié. 8/27

6:05 pm-1:50 pm

2 stops51h 45m

Seattle/Tacoma Intl

mié. 9/10

4:00 pm-9:35 pm

2 stops21h 35m

$655

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

lun. 9/1

7:45 am-8:42 pm

2 stops20h 57m

Seattle/Tacoma Intl

lun. 9/15

10:55 am-8:20 am

1 stop13h 25m

$657

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

mié. 8/27

9:50 am-11:35 am

Nonstop9h 45m

Seattle/Tacoma Intl

mié. 9/10

3:00 pm-12:15 pm

1 stop13h 15m

$658

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

mié. 8/27

9:30 am-8:45 pm

1 stop19h 15m

Seattle/Tacoma Intl

mar. 9/9

7:10 am-8:20 am

2 stops17h 10m

$659

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

lun. 10/27

6:00 am-10:45 pm

2 stops23h 45m

Seattle/Tacoma Intl

vie. 11/7

7:00 am-10:50 am

2 stops43h 50m

$661

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

mié. 8/27

9:55 am-3:55 pm

1 stop14h 00m

Seattle/Tacoma Intl

mar. 9/9

8:25 pm-2:15 pm

Nonstop9h 50m

$664

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 49 results
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Best time to book a flight from Heathrow to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington 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

What is the cheapest month to book a flight from London Heathrow Airport to State of Washington?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to State of Washington (average of $238). Flying from London Heathrow Airport to State of Washington 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 WA?

Find hourly flight availability from Heathrow to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 31, 2025.

When flying from London Heathrow Airport to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London Heathrow Airport to State of Washington

Explore weekly flight availability from Heathrow to Washington. 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 julio 31, 2025.

The most flights from LHR to USWA are scheduled on a Monday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (11 on average).

How much does it cost to fly round-trip from London Heathrow Airport to State of Washington?

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated julio 31, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Austrian Airlines from London Heathrow Airport to Washington to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
823 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Washington. 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 to fly from London Heathrow Airport to State of Washington one-way?

    The cheapest airlines for a one-way flight from London Heathrow Airport to State of Washington are Aer Lingus ($543), WestJet ($559), and Icelandair ($686).

  • What are the most popular routes from London Heathrow Airport to State of Washington?

    While some choose either London Heathrow - Portland or London Heathrow - Spokane, London Heathrow - Seattle/Tacoma Intl is the most popular route from London Heathrow Airport to State of Washington.

  • What are the most reliable airlines from London Heathrow Airport to State of Washington?

    Consider Scandinavian Airlines (97%), KLM (94%) or Air France (94%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to State of Washington.

  • What are the cheapest flights from London Heathrow Airport to State of Washington?

    Looking at all options, your cheapest flight can be booked for $676. While the most popular route (London Heathrow - Seattle/Tacoma Intl) can be booked for $535 on average our data indicates $2,627 when flying from London Heathrow Airport to State of Washington.

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

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

  • How can I find direct flights from Heathrow to Washington?

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Washington 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 State of Washington?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to State of Washington (average of $238). Flying from London Heathrow Airport to State of Washington 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.

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Alternative routes for Heathrow to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Heathrow to Washington

Discover the top 6 airlines that operate flights from Heathrow to Washington. 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$449Average$668FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$560Average$765FlexibilityNo cancel feeOn-time70%
IberiaCheapest$575Average$781FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$594Average$918FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$620Average$813FlexibilityNo cancel feeOn-time71%
DeltaCheapest$632Average$852FlexibilityNo cancel feeOn-timeN/A

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