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$482+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$603
(The Travel House)

One-way from

$482
(Thrive Travel)

Popular in

July

Cheapest in

January

Average price

$677

Good round-trip deal

$688 or less

Good one-way deal

$736 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. 13% potential increase in price ($113 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This SmartFares deal was found by Cheapflights users on 9/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/227:45 pmLHR - SEA
1 stop23h 30mVirgin Atlantic
Mon 10/65:35 pmSEA - LHR
Nonstop9h 45mVirgin Atlantic
Deal found 9/14$603
This Air Canada deal was found by Cheapflights users on 9/13. 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 10/86:30 amLHR - SEA
2 stops15h 46mMultiple Airlines
Tue 10/1410:00 amSEA - LHR
2 stops15h 35mMultiple Airlines
Deal found 9/13$605
This FlightHub deal was found by Cheapflights users on 9/15. 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.
Wed 11/512:15 pmLHR - SEA
1 stop12h 45mIcelandair
Sun 3/153:35 pmSEA - LHR
1 stop12h 15mIcelandair
Deal found 9/15$606
This ChecknFly deal was found by Cheapflights users on 9/14. 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.
Wed 10/17:05 pmLHR - SEA
2 stops26h 54mFinnair
Sun 11/1612:59 amSEA - LHR
1 stop23h 16mFinnair
Deal found 9/14$607
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/227:30 pmLHR - SEA
2 stops33h 12mAustrian Airlines
Mon 10/67:00 amSEA - LHR
1 stop15h 20mAustrian Airlines
Deal found 9/13$608
This TravelUp deal was found by Cheapflights users on 9/15. 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.
Fri 10/176:55 amLHR - SEA
1 stop18h 04mMultiple Airlines
Mon 10/205:30 amSEA - LHR
1 stop23h 50mMultiple Airlines
Deal found 9/15$610
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/18:30 amLHR - SEA
2 stops19h 21mUnited Airlines
Thu 11/69:04 amSEA - LHR
2 stops18h 01mUnited Airlines
Deal found 9/15$611
This The Travel House deal was found by Cheapflights users on 9/15. 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 10/316:00 amLHR - SEA
2 stops23h 45mSWISS
Sat 11/810:53 amSEA - LHR
1 stop13h 02mSWISS
Deal found 9/15$612
This Air Canada deal was found by Cheapflights users on 9/15. 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 10/158:40 amLHR - SEA
2 stops17h 56mAir Canada
Wed 10/222:55 pmSEA - LHR
1 stop14h 25mAir Canada
Deal found 9/15$613
This SmartFares deal was found by Cheapflights users on 9/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2912:20 pmLHR - SEA
Nonstop10h 25mVirgin Atlantic
Wed 11/54:48 pmSEA - LHR
Nonstop9h 42mVirgin Atlantic
Deal found 9/13$615
This United Airlines deal was found by Cheapflights users on 9/14. 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 12/69:00 amLHR - PSC
2 stops19h 47mUnited Airlines
Sun 12/146:25 amPSC - LHR
1 stop21h 35mUnited Airlines
Deal found 9/14$628
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/289:30 amLHR - GEG
2 stops20h 59mUnited Airlines
Tue 11/45:10 amGEG - LHR
1 stop20h 30mUnited Airlines
Deal found 9/13$634

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 September 15, 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

Thu 9/25

6:30 am-2:16 pm

2 stops15h 46m

Seattle/Tacoma Intl

Tue 9/30

11:10 am-11:45 am

2 stops16h 35m

$605

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 11/6

7:30 am-6:10 pm

2 stops18h 40m

Seattle/Tacoma Intl

Thu 11/13

7:13 pm-9:20 pm

2 stops18h 07m

$611

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 10/13

6:30 am-11:55 am

1 stop13h 25m

Seattle/Tacoma Intl

Mon 10/20

1:57 pm-11:45 am

1 stop13h 48m

$620

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 10/6

6:30 am-2:16 pm

2 stops15h 46m

Seattle/Tacoma Intl

Mon 10/27

3:40 pm-11:50 am

1 stop13h 10m

$620

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 10/18

6:30 am-11:55 am

1 stop13h 25m

Seattle/Tacoma Intl

Wed 10/22

8:30 am-11:25 am

2 stops18h 55m

$620

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 10/13

6:30 am-11:55 am

1 stop13h 25m

Seattle/Tacoma Intl

Mon 10/20

10:50 am-11:25 am

2 stops16h 35m

$620

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 10/8

6:30 am-4:05 pm

1 stop17h 35m

Seattle/Tacoma Intl

Tue 10/14

5:35 pm-11:20 am

Nonstop9h 45m

$626

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 10/8

6:30 am-11:50 am

1 stop13h 20m

Seattle/Tacoma Intl

Tue 10/14

8:25 pm-2:15 pm

Nonstop9h 50m

$626

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sun 9/28

1:05 pm-2:24 pm

2 stops33h 19m

Seattle/Tacoma Intl

Sun 10/12

5:31 pm-9:35 am

2 stops32h 04m

$626

LondonPasco

LHR - PSC

LHRPSC

London Heathrow

Sat 12/6

9:00 am-8:47 pm

2 stops19h 47m

Pasco Tri Cities

Sun 12/14

6:25 am-12:00 pm

1 stop21h 35m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 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 $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 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 September 15, 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 September 15, 2025.

The most flights from LHR to USWA are scheduled on a Monday (21 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (15 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 September 15, 2025.
Peruse reviews from past customers who have flown with Delta, Virgin Atlantic, and American 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
7,954 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Virgin Atlantic
7.4
Good
664 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Icelandair
7.0
Good
544 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
British Airways
6.7
Okay
7,361 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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.

  • How long is the flight from London Heathrow Airport to State of Washington?

    For as low as $712, United Airlines can have you in State of Washington from London Heathrow Airport in 9h 55m. The distance from London Heathrow Airport to State of Washington is about 4896 mi. This flight may include one or multiple stops.

  • 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 Iberia ($482), Aer Lingus ($524), and British Airways ($525).

  • 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 (93%), KLM (89%) or Air France (89%) 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 $627. While the most popular route (London Heathrow - Seattle/Tacoma Intl) can be booked for $513 on average, our data indicates $2,282 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 $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

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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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Heathrow to Nashville flights

Top 5 airlines flying from Heathrow to Washington

Discover the top 5 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$449Average$609FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$560Average$763FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$594Average$901FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$620Average$777FlexibilityNo cancel feeOn-time71%
DeltaCheapest$621Average$820FlexibilityNo cancel feeOn-timeN/A

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