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$482+ Cheap flights from London (LON) 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SEA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from London to Washington

Keep the following information in mind while searching for London to Washington flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$522
(Gotogate)

One-way from

$482
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$662

Good round-trip deal

$640 or less

Good one-way deal

$611 or less
Provider with most accurate pricing for London (LON)-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for London (LON)-Seattle/Tacoma Intl flights.
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From London (LON) to Washington
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One-way flight from London (LON) to Washington
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($139 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from London (LON) to Washington.
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Price to beat on a one-way flight from London (LON) to Washington.
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Find flight deals from London to Washington

Cheapest flights from London to Washington
Explore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Gotogate deal was found by Cheapflights users on 2/19. 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.
Mon 4/219:25 pmLHR - SEA
1 stop28h 25mIcelandair
Tue 4/293:45 pmSEA - LHR
1 stop12h 10mIcelandair
Deal found 2/19$522
This oojo deal was found by Cheapflights users on 2/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1811:55 amLGW - SEA
1 stop13h 05mIcelandair
Tue 3/253:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 2/19$533
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/223:20 pmLHR - SEA
1 stop29h 35mUnited Airlines
Mon 3/247:00 amSEA - LHR
1 stop17h 55mUnited Airlines
Deal found 2/20$534
This Gotogate deal was found by Cheapflights users on 2/20. 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.
Mon 3/176:30 amLHR - SEA
1 stop13h 40mLufthansa
Mon 3/313:05 pmSEA - LHR
1 stop14h 15mLufthansa
Deal found 2/20$565
This Air Canada deal was found by Cheapflights users on 2/18. 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.
Tue 3/118:55 amLHR - SEA
2 stops19h 35mAir Canada
Tue 3/185:55 amSEA - LHR
2 stops18h 15mAir Canada
Deal found 2/18$591
This SWISS deal was found by Cheapflights users on 2/19. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/118:55 amLHR - SEA
2 stops20h 58mSWISS
Tue 3/182:50 pmSEA - LHR
2 stops21h 25mSWISS
Deal found 2/19$592
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/68:55 amLHR - SEA
2 stops21h 58mMultiple Airlines
Sun 3/910:55 amSEA - LHR
1 stop14h 00mMultiple Airlines
Deal found 2/20$594
This Expedia deal was found by Cheapflights users on 2/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/136:40 pmLGW - SEA
2 stops34h 59mSWISS
Wed 3/262:50 pmSEA - LGW
2 stops20h 00mSWISS
Deal found 2/20$597
This TravelUp deal was found by Cheapflights users on 2/19. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/119:25 amLHR - SEA
Nonstop9h 55mBritish Airways
Tue 4/18:20 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 2/19$609
This Gotogate deal was found by Cheapflights users on 2/19. 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.
Mon 3/177:35 pmLHR - SEA
1 stop23h 45mVirgin Atlantic
Wed 4/25:35 pmSEA - LHR
Nonstop9h 50mVirgin Atlantic
Deal found 2/19$610
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/176:30 amLHR - SEA
1 stop13h 10mDelta
Mon 3/315:35 pmSEA - LHR
Nonstop9h 50mDelta
Deal found 2/20$614
This Cheapflightsfares deal was found by Cheapflights users on 2/18. 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.
Tue 4/229:25 amLHR - SEA
Nonstop9h 45mIberia
Wed 4/308:20 pmSEA - LHR
Nonstop9h 20mIberia
Deal found 2/18$615

Find flights from London to Washington within your budget

Customize your flight search to find flights from London 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 February 20, 2025.

Fly from

London

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 4/21

9:25 pm-5:50 pm

1 stop28h 25m

Seattle/Tacoma Intl

Tue 4/29

3:45 pm-11:55 am

1 stop12h 10m

$522

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 3/18

11:55 am-6:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 3/25

3:35 pm-10:55 am

1 stop12h 20m

$533

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 3/22

3:20 pm-1:55 pm

1 stop29h 35m

Seattle/Tacoma Intl

Mon 3/24

7:00 am-7:55 am

1 stop17h 55m

$534

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 3/17

6:30 am-1:10 pm

1 stop13h 40m

Seattle/Tacoma Intl

Mon 3/31

3:05 pm-1:20 pm

1 stop14h 15m

$565

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 3/11

8:55 am-9:30 pm

2 stops19h 35m

Seattle/Tacoma Intl

Tue 3/18

5:55 am-7:10 am

2 stops18h 15m

$591

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 3/11

8:55 am-10:53 pm

2 stops20h 58m

Seattle/Tacoma Intl

Tue 3/18

2:50 pm-7:15 pm

2 stops21h 25m

$592

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 3/6

8:55 am-10:53 pm

2 stops21h 58m

Seattle/Tacoma Intl

Sun 3/9

10:55 am-7:55 am

1 stop14h 00m

$594

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 3/13

6:40 pm-10:39 pm

2 stops34h 59m

Seattle/Tacoma Intl

Wed 3/26

2:50 pm-5:50 pm

2 stops20h 00m

$597

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 3/11

9:25 am-12:20 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Tue 4/1

8:20 pm-1:40 pm

Nonstop9h 20m

$609

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 3/17

7:35 pm-12:20 pm

1 stop23h 45m

Seattle/Tacoma Intl

Wed 4/2

5:35 pm-11:25 am

Nonstop9h 50m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 60 results
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Best time to book a flight from London to Washington

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

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

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

Currently, January is the cheapest month in which you can book a flight from London to State of Washington (average of $238). Flying from London to State of Washington in July is currently the most expensive (average of $411). 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 LON to WA?

Find hourly flight availability from London 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 February 20, 2025.

When flying from London 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 to State of Washington

Explore weekly flight availability from London 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 February 20, 2025.

The most flights from LON to USWA are scheduled on a Friday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

If weather is an important factor for your trip to State of Washington, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 February 20, 2025.
See what other customers who have flown with Emirates, Delta and Air New Zealand from London to Washington have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,276 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Boarding

8.1

Food

7.9

Entertainment

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Emirates
8.1
Very good
3,276 reviews
Emirates
8.1
Very good
3,276 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Boarding

8.1

Food

7.9

Entertainment

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Delta
8.0
Very good
8,219 reviews
Emirates
8.1
Very good
3,276 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Boarding

8.1

Food

7.9

Entertainment

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Air New Zealand
7.9
Good
461 reviews
Emirates
8.1
Very good
3,276 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Boarding

8.1

Food

7.9

Entertainment

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

KLM
7.8
Good
1,333 reviews
Emirates
8.1
Very good
3,276 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Boarding

8.1

Food

7.9

Entertainment

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Finnair
7.6
Good
1,274 reviews
Emirates
8.1
Very good
3,276 reviews

Overall

8.1

Comfort

8.0

Crew

8.3

Boarding

8.1

Food

7.9

Entertainment

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Related info for your journey

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $484. However, be on the lookout for offers from Aer Lingus and Icelandair, as they are both options that can get you from London to State of Washington for a low price.

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

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

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

    The top 3 most reliable airlines when flying from London to State of Washington are Singapore Airlines (97%), KLM (89%) and Air France (89%).

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

    Looking for the cheapest flight from London to State of Washington? While on average our users pay $1,430, our data indicates the cheapest price to be $538. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around $514.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from London to State of Washington (average of $238). Flying from London to State of Washington in July is currently the most expensive (average of $411). 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 London to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from London to Washington

Discover the top 8 airlines that operate flights from London 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$559Average$817FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$560Average$850FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$617Average$997FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$621Average$778FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$671Average$1,000FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$673Average$1,001FlexibilityNo cancel feeOn-time77%
KLMCheapest$674Average$844FlexibilityNo cancel feeOn-time75%
DeltaCheapest$675Average$961FlexibilityNo cancel feeOn-timeN/A
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