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$427+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

This Gotogate deal was found by Cheapflights users on 10/28. 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 12/158:35 pmLHR - SEA
1 stop28h 25mIcelandair
Thu 1/152:35 pmSEA - LHR
1 stop20h 55mIcelandair
Deal found 10/28$595
This Gotogate deal was found by Cheapflights users on 10/28. 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.
Wed 11/1212:15 pmLHR - SEA
1 stop12h 45mIcelandair
Wed 11/192:35 pmSEA - LHR
1 stop20h 55mIcelandair
Deal found 10/28$599
This Gotogate deal was found by Cheapflights users on 10/28. 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 11/118:35 pmLHR - SEA
1 stop28h 25mIcelandair
Tue 11/182:35 pmSEA - LHR
1 stop12h 15mIcelandair
Deal found 10/28$600
This The Travel House deal was found by Cheapflights users on 10/30. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/28:35 pmLHR - SEA
1 stop28h 25mIcelandair
Tue 12/92:35 pmSEA - LHR
1 stop20h 55mIcelandair
Deal found 10/30$601
This Booking.com deal was found by Cheapflights users on 10/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2612:15 pmLHR - SEA
1 stop12h 45mIcelandair
Wed 12/32:35 pmSEA - LHR
1 stop20h 55mIcelandair
Deal found 10/29$603
This FlightHub deal was found by Cheapflights users on 10/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/118:35 pmLHR - SEA
1 stop28h 25mIcelandair
Mon 11/172:35 pmSEA - LHR
1 stop12h 15mIcelandair
Deal found 10/30$617
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/118:35 pmLHR - SEA
1 stop28h 25mIcelandair
Wed 11/192:35 pmSEA - LHR
1 stop20h 55mIcelandair
Deal found 10/28$618
This Gotogate deal was found by Cheapflights users on 10/30. 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.
Wed 11/1212:15 pmLHR - PDX
1 stop12h 45mIcelandair
Thu 11/202:45 pmPDX - LHR
1 stop12h 05mIcelandair
Deal found 10/30$711
This Gotogate deal was found by Cheapflights users on 10/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:15 pmLHR - PDX
1 stop12h 45mIcelandair
Thu 11/132:45 pmPDX - LHR
1 stop12h 05mIcelandair
Deal found 10/29$713
This Booking.com deal was found by Cheapflights users on 10/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:15 pmLHR - PDX
1 stop12h 45mIcelandair
Mon 12/12:45 pmPDX - LHR
1 stop20h 45mIcelandair
Deal found 10/30$719
This oojo deal was found by Cheapflights users on 10/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:15 pmLHR - PDX
1 stop12h 45mIcelandair
Tue 11/182:45 pmPDX - LHR
1 stop12h 05mIcelandair
Deal found 10/28$722
This Gotogate deal was found by Cheapflights users on 10/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/812:15 pmLHR - PDX
1 stop12h 45mIcelandair
Mon 12/152:45 pmPDX - LHR
1 stop20h 45mIcelandair
Deal found 10/29$735

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$595
(Gotogate)

One-way from

$427
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$726

Good round-trip deal

$787 or less

Good one-way deal

$679 or less
Provider with most accurate pricing for London (LON)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Seattle/Tacoma Intl flights.
Search Deals
From London Heathrow to Washington
Search Deals
One-way flight from London Heathrow to Washington
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from London Heathrow to Washington.
Search Deals
Price to beat on a one-way flight from London Heathrow to Washington.
Search Deals

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 October 30, 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

Wed 11/12

12:15 pm-5:00 pm

1 stop12h 45m

Seattle/Tacoma Intl

Thu 11/20

2:35 pm-10:50 am

1 stop12h 15m

$639

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 12/16

8:35 pm-5:00 pm

1 stop28h 25m

Seattle/Tacoma Intl

Wed 1/14

2:35 pm-7:30 pm

1 stop20h 55m

$641

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 2/25

11:45 am-11:40 am

1 stop31h 55m

Seattle/Tacoma Intl

Wed 3/4

4:45 pm-10:30 am

Nonstop9h 45m

$653

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 2/25

11:45 am-11:40 am

1 stop31h 55m

Seattle/Tacoma Intl

Tue 3/10

8:20 pm-12:50 pm

Nonstop9h 30m

$653

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 2/26

6:30 am-11:40 am

1 stop13h 10m

Seattle/Tacoma Intl

Sun 3/8

5:40 pm-10:30 am

Nonstop9h 50m

$661

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 2/25

6:30 am-11:40 am

1 stop13h 10m

Seattle/Tacoma Intl

Fri 3/6

4:45 pm-10:30 am

Nonstop9h 45m

$662

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 2/9

2:55 pm-4:55 pm

Nonstop10h 00m

Seattle/Tacoma Intl

Wed 2/18

7:00 am-11:40 am

1 stop20h 40m

$666

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 2/5

2:55 pm-4:55 pm

Nonstop10h 00m

Seattle/Tacoma Intl

Wed 2/18

7:15 am-10:25 am

1 stop19h 10m

$666

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 2/11

2:55 pm-4:55 pm

Nonstop10h 00m

Seattle/Tacoma Intl

Mon 2/23

6:50 pm-12:20 pm

Nonstop9h 30m

$666

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 12/16

10:05 am-6:55 pm

1 stop16h 50m

Seattle/Tacoma Intl

Wed 1/14

6:50 pm-12:20 pm

Nonstop9h 30m

$667

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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 $477). Flying from London Heathrow Airport to State of Washington in July is currently the most expensive (average of $673). 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 October 30, 2025.

When flying from London Heathrow Airport to State of Washington, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 12% versus a flight in the evening.

What is the cheapest day to fly from London Heathrow Airport to State of Washington?

Use this chart to determine the cheapest time to fly round-trip from Heathrow to Washington. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their London Heathrow Airport to State of Washington flight should consider departing on Tuesday mornings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 30, 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
7.9
Good
7,993 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!
Delta
7.9
Good
7,993 reviews
Delta
7.9
Good
7,993 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!
Virgin Atlantic
7.5
Good
670 reviews
Delta
7.9
Good
7,993 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!
American Airlines
7.2
Good
11,032 reviews
Delta
7.9
Good
7,993 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!
Icelandair
7.1
Good
562 reviews
Delta
7.9
Good
7,993 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!
British Airways
6.7
Okay
7,487 reviews
Delta
7.9
Good
7,993 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

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 $639, Icelandair can have you in State of Washington from London Heathrow Airport in 12h 45m. The distance from London Heathrow Airport to State of Washington is about 4783 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 Icelandair ($512), British Airways ($560), and United Airlines ($563).

  • 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 (95%), KLM (87%) or Air France (87%) 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 $592. While the most popular route (London Heathrow - Seattle/Tacoma Intl) can be booked for $529 on average, our data indicates $2,172 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 $477). Flying from London Heathrow Airport to State of Washington in July is currently the most expensive (average of $673). 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 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$497Average$644FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$553Average$751FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$589Average$813FlexibilityNo cancel feeOn-time71%
Virgin AtlanticCheapest$594Average$878FlexibilityNo cancel feeOn-time72%
DeltaCheapest$594Average$826FlexibilityNo cancel feeOn-timeN/A

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