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Cheap flights from London to Seattle from £203

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
LON — SEA
1 May — 8 May1
1 adult
Wed 1/5
Wed 8/5

The best prices from London to Seattle/Tacoma Intl are usually found in February or March, booked 74 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from London to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Seattle (SEA). 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 26 April 2024.

Popular in

July

Cheapest in

February

Round-trip from

£474

One-way from

£203
High demand for flights, 22% potential price rise
Search Deals
Best time to find cheap flights, 16% potential price drop
Search Deals
From London (LON) to Seattle/Tacoma Intl
Search Deals
One-way flight from London (LON) to Seattle/Tacoma Intl
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What is the cheapest day to fly round-trip from London to Seattle?

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 17% on the overall cost on flights from London to Seattle.

How far in advance should I book a flight from London to Seattle?

Travelers have found it’s best to book a flight 49 days in advance to save up to 24% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 49 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to Seattle 1-2 weeks in advance for as low as £560, or £689 for flights within the next 24 hours.

What is the cheapest month to fly from London to Seattle?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, February can be a great choice for travel to Seattle. Flights to Seattle from London in February are about £533 on average during February, but can be found for as low as £346.

When is the cheapest time to fly from London to Seattle (LON - SEA)?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 9% on flights from London to Seattle by exploring options for tickets in the evening.

Cheap American Airlines flights from London to Seattle

Explore cheap flight options specifically provided by American Airlines for the route between London and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 925,685 searches. Data last updated 26 April 2024.
Check out some of the cheapest American Airlines flights we've come across from London to Seattle. Be sure to come back soon if the deals available don't appeal to you at this time.
Wed 1/508:40LHR - SEA
1 stop23h 09mAmerican Airlines
Wed 8/512:09SEA - LHR
1 stop16h 01mAmerican Airlines
Deal found 24/4£502
Wed 1/513:00LHR - SEA
1 stop16h 58mAmerican Airlines
Tue 7/501:15SEA - LHR
1 stop21h 10mAmerican Airlines
Deal found 24/4£515
Tue 14/515:05LGW - SEA
2 stops29h 21mAmerican Airlines
Tue 11/622:52SEA - LGW
2 stops25h 18mAmerican Airlines
Deal found 25/4£516
Tue 14/515:05LGW - SEA
2 stops29h 21mAmerican Airlines
Mon 10/601:14SEA - LGW
2 stops21h 21mAmerican Airlines
Deal found 25/4£521
Tue 14/521:00LHR - SEA
2 stops30h 31mAmerican Airlines
Tue 11/605:10SEA - LHR
1 stop18h 40mAmerican Airlines
Deal found 25/4£530
Thu 2/509:45LHR - SEA
Nonstop9h 45mAmerican Airlines
Thu 9/505:20SEA - LHR
1 stop18h 45mAmerican Airlines
Deal found 25/4£533
Tue 14/509:50LHR - SEA
Nonstop9h 45mAmerican Airlines
Tue 11/605:53SEA - LHR
1 stop17h 47mAmerican Airlines
Deal found 25/4£534
Thu 2/509:45LHR - SEA
Nonstop9h 45mAmerican Airlines
Wed 8/501:15SEA - LHR
1 stop22h 50mAmerican Airlines
Deal found 25/4£538
Fri 3/509:50LHR - SEA
Nonstop9h 45mAmerican Airlines
Wed 15/501:15SEA - LHR
1 stop21h 10mAmerican Airlines
Deal found 26/4£539

  • One of the most popular airlines travelling from London to Seattle is American Airlines. Flights from American Airlines travelling this route typically cost £730.16 RT. This price is typically 69% cheaper than other airlines that offer London to Seattle flights. When booking this route, the cheapest RT price found was £332. The most popular departure airport in London when flying to Seattle is London Heathrow Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from London to Seattle, American Airlines flights are 7% more popular than any other airline flying that same route.

Cheap Icelandair flights from London to Seattle

Explore cheap flight options specifically provided by Icelandair for the route between London and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 925,685 searches. Data last updated 26 April 2024.
Browse through some of the cheapest Icelandair flights travelling from London to Seattle. Ensure the flight price, dates, time, and airline match your criteria before you book.
Mon 13/521:25LHR - SEA
1 stop31h 10mIcelandair
Tue 4/618:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 25/4£470
Thu 12/921:25LHR - SEA
1 stop31h 10mIcelandair
Mon 23/918:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 25/4£486
Tue 14/521:25LHR - SEA
1 stop28h 15mIcelandair
Tue 4/623:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 25/4£488
Mon 21/1013:00LGW - SEA
1 stop12h 55mIcelandair
Wed 6/1114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 25/4£490
Wed 15/513:00LGW - SEA
1 stop12h 40mIcelandair
Wed 22/523:00SEA - LGW
1 stop28h 45mIcelandair
Deal found 24/4£497
Tue 14/513:00LGW - SEA
1 stop15h 35mIcelandair
Tue 4/615:50SEA - LGW
1 stop11h 55mIcelandair
Deal found 25/4£508
Thu 2/513:00LGW - SEA
1 stop12h 40mIcelandair
Thu 9/515:50SEA - LGW
1 stop11h 55mIcelandair
Deal found 25/4£625
Thu 2/513:10LHR - SEA
1 stop12h 30mIcelandair
Sat 4/515:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 25/4£3,421
Thu 2/513:00LGW - SEA
1 stop12h 40mIcelandair
Mon 13/522:55SEA - LGW
2 stops28h 50mIcelandair
Deal found 25/4£3,640

  • Icelandair is one of the most popular airlines used for those travelling from London to Seattle. Flights from Icelandair travelling this route typically cost £766.03 RT. This price is typically 61% more expensive than other airlines that offer London to Seattle flights. When booking this route, the cheapest RT price found was £560. The most popular departure airport in London when flying to Seattle is London Heathrow Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from London to Seattle, Icelandair flights are 4% more popular than any other airline flying that same route.

Cheap London to Seattle flights in April & May 2024

Find cheap flight options from London to Seattle specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 925,685 searches. Prices were last updated on 26 April 2024.
These are some of the best deals we've found on flights to Seattle in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Thu 16/513:05LHR - SEA
1 stop34h 34mUnited Airlines
Sat 18/514:50SEA - LHR
1 stop32h 05mUnited Airlines
Deal found 25/4£445
Mon 13/521:25LHR - SEA
1 stop31h 10mIcelandair
Tue 4/618:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 25/4£470
Tue 7/516:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Wed 15/513:30SEA - LHR
1 stop12h 30mVirgin Atlantic
Deal found 26/4£472
Tue 7/509:50LHR - SEA
Nonstop9h 45mBritish Airways
Mon 20/513:30SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 25/4£474
Tue 7/512:00LGW - SEA
1 stop18h 18mVirgin Atlantic
Wed 15/507:10SEA - LGW
1 stop18h 50mVirgin Atlantic
Deal found 26/4£475
Tue 7/515:20LHR - SEA
1 stop15h 07mLufthansa
Wed 15/507:15SEA - LHR
1 stop14h 40mLufthansa
Deal found 26/4£478
Tue 7/506:15LHR - SEA
1 stop13h 05mVirgin Atlantic
Mon 20/513:30SEA - LHR
1 stop12h 30mVirgin Atlantic
Deal found 25/4£482
Mon 6/512:00LGW - SEA
1 stop18h 24mVirgin Atlantic
Mon 20/515:22SEA - LGW
1 stop34h 38mVirgin Atlantic
Deal found 25/4£483
Mon 6/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 20/507:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 25/4£483

London to Seattle 2024 flight deals

Discover exclusive flight deals for travel between London and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 925,685 searches. Data last updated 26 April 2024.
These are some of the best deals we've found on flights to Seattle in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Thu 16/513:05LHR - SEA
1 stop34h 34mUnited Airlines
Sat 18/514:50SEA - LHR
1 stop32h 05mUnited Airlines
Deal found 25/4£445
Thu 12/912:00LGW - SEA
1 stop15h 01mMultiple Airlines
Mon 23/915:50SEA - LGW
1 stop11h 55mMultiple Airlines
Deal found 25/4£454
Wed 11/912:15LHR - SEA
1 stop15h 59mLufthansa
Wed 2/1013:30SEA - LHR
1 stop14h 15mLufthansa
Deal found 26/4£458
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 30/913:35SEA - LHR
1 stop12h 25mVirgin Atlantic
Deal found 26/4£464
Mon 16/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 30/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 26/4£466
Mon 13/521:25LHR - SEA
1 stop31h 10mIcelandair
Tue 4/618:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 25/4£470
Tue 7/516:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Wed 15/513:30SEA - LHR
1 stop12h 30mVirgin Atlantic
Deal found 26/4£472
Tue 7/509:50LHR - SEA
Nonstop9h 45mBritish Airways
Mon 20/513:30SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 25/4£474
Tue 7/512:00LGW - SEA
1 stop18h 18mVirgin Atlantic
Wed 15/507:10SEA - LGW
1 stop18h 50mVirgin Atlantic
Deal found 26/4£475

Direct flights to Seattle from London

Discover direct flight options from London to Seattle. Find direct flights with no stopovers, providing a convenient travel experience. Explore direct flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 925,685 searches. Data last updated 26 April 2024.
If you're seeking options on non-stop flights from London to Seattle, check out these fares. Those looking to potentially save on 1 or 2-stop flights from London to Seattle should utilise the search form at the top of the page.
Tue 7/509:50LHR - SEA
Nonstop9h 45mBritish Airways
Mon 20/513:30SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 25/4£474
Mon 6/512:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 20/516:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 25/4£486
Mon 6/515:55LHR - SEA
Nonstop10h 30mAir France
Mon 20/521:10SEA - LHR
Nonstop9h 40mAir France
Deal found 25/4£492
Mon 6/515:55LHR - SEA
Nonstop10h 30mAir France
Mon 20/521:10SEA - LHR
Nonstop9h 40mAir France
Deal found 25/4£493
Mon 6/515:55LHR - SEA
Nonstop10h 30mKLM
Mon 13/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 25/4£494
Wed 8/516:00LHR - SEA
Nonstop9h 45mBritish Airways
Wed 15/513:30SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 26/4£495
Mon 6/515:55LHR - SEA
Nonstop10h 30mKLM
Mon 13/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 26/4£497
Wed 8/509:50LHR - SEA
Nonstop9h 45mIberia
Wed 15/513:30SEA - LHR
Nonstop9h 20mIberia
Deal found 24/4£504
Mon 6/509:50LHR - SEA
Nonstop9h 45mFinnair
Mon 20/513:30SEA - LHR
Nonstop9h 20mFinnair
Deal found 25/4£507

London to Seattle flights leaving soon

Find last-minute flight options from London to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 925,685 searches. Data last updated 26 April 2024.
Consider one of these great deals we found on last-minute flights from London to Seattle. To prevent any unwanted surprises, users should verify their flight info before booking.
Mon 6/512:00LGW - SEA
2 stops18h 34mDelta
Mon 20/507:10SEA - LGW
1 stop18h 50mDelta
Deal found 25/4£483
Mon 6/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 20/507:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 25/4£483
Mon 6/512:00LGW - SEA
2 stops18h 34mDelta
Mon 20/507:10SEA - LGW
1 stop18h 50mDelta
Deal found 26/4£485
Mon 6/509:55LHR - SEA
1 stop14h 45mKLM
Mon 13/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 25/4£486
Mon 6/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 20/507:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 25/4£487
Mon 6/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 13/507:40SEA - LHR
1 stop18h 20mAir Canada
Deal found 25/4£489
Mon 6/509:55LHR - SEA
1 stop14h 45mKLM
Mon 13/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 26/4£490
Mon 6/515:55LHR - SEA
Nonstop10h 30mAir France
Mon 20/521:10SEA - LHR
Nonstop9h 40mAir France
Deal found 25/4£492
Mon 6/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 13/505:50SEA - LHR
2 stops18h 45mAir Canada
Deal found 25/4£493

One-way flights to Seattle from London

Search for one-way flight options from London to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 925,685 searches. Data last updated 26 April 2024.
Take a look at some of the one-way flights we've detected from London to Seattle. Users can also find round-trip London to Seattle flights by using the search form above.
Tue 24/912:00LGW - SEA
1 stop15h 01mMultiple Airlines
Deal found 25/4£203
Tue 24/912:00LGW - SEA
1 stop15h 01mMultiple Airlines
Deal found 25/4£204
Thu 9/510:45LGW - SEA
2 stops30h 00mMultiple Airlines
Deal found 25/4£225
Tue 17/912:00LGW - SEA
1 stop28h 45mMultiple Airlines
Deal found 25/4£234
Mon 3/620:50LGW - SEA
3 stops55h 19mMultiple Airlines
Deal found 25/4£241
Mon 27/520:50LGW - SEA
3 stops43h 55mMultiple Airlines
Deal found 25/4£244
Mon 3/615:50LTN - SEA
3 stops39h 00mMultiple Airlines
Deal found 25/4£259
Sun 12/510:45LGW - SEA
2 stops30h 00mMultiple Airlines
Deal found 25/4£262
Thu 6/620:20LHR - SEA
2 stops34h 30mMultiple Airlines
Deal found 25/4£264

Find flights from London to Seattle within your budget

Customise your flight search to find flights from London to Seattle 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 925,685 searches. Data last updated 26 April 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£445 - £492

Route

Depart

Return

Price

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 16/5

1 stop34h 34m

Seattle/Tacoma Intl

Sat 18/5

1 stop32h 05m

£445

London GatwickSeattle/Tacoma Intl

LGW - SEA

LGWSEA

London Gatwick

Thu 12/9

1 stop15h 01m

Seattle/Tacoma Intl

Mon 23/9

1 stop11h 55m

£454

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 13/5

1 stop31h 10m

Seattle/Tacoma Intl

Tue 4/6

1 stop17h 25m

£470

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 7/5

Nonstop10h 30m

Seattle/Tacoma Intl

Wed 15/5

1 stop12h 30m

£472

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 7/5

Nonstop9h 45m

Seattle/Tacoma Intl

Mon 20/5

Nonstop9h 20m

£474

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 7/5

1 stop15h 07m

Seattle/Tacoma Intl

Wed 15/5

1 stop14h 40m

£478

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 6/5

1 stop20h 01m

Seattle/Tacoma Intl

Mon 20/5

1 stop14h 50m

£483

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 6/5

1 stop14h 45m

Seattle/Tacoma Intl

Mon 13/5

Nonstop9h 40m

£486

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 6/5

Nonstop10h 30m

Seattle/Tacoma Intl

Mon 20/5

Nonstop9h 40m

£492

Flights are sorted by cheapest first

Deals found on 25/4

When is the best time to book a flight from London to Seattle?

Use this chart to determine the optimal time to book a return flight from London to Seattle. Price data was last updated on 28 January 2024.
Booking 74 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

When is the cheapest time to fly from London to Seattle?

Use this chart to determine the cheapest time to fly return from London to Seattle. Price data was last updated on 21 April 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their London to Seattle flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Seattle by month

Plan your trip from London to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from London to Seattle is currently £237 while a return flight costs £473. Price data was last updated on 21 April 2024.

Currently, February is the cheapest month in which you can book a flight from London to Seattle (average of £593). Flying from London to Seattle in July is currently the most expensive (average of £802). 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.

January

£488

February

£474

March

£506

April

£521

May

£546

June

£612

July

£642

August

£610

September

£550

October

£524

November

£481

December

£475

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

SEA

Temperature

5 - 19 °C

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 26 April 2024.
Read through reviews of airlines operating flights from London to Seattle, such as American Airlines, Icelandair and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very Good
10,966 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.1

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very Good
10,966 reviews
Delta
8.1
Very Good
10,966 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.1

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

KLM
7.9
Good
1,626 reviews
Delta
8.1
Very Good
10,966 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.1

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

SWISS
7.8
Good
2,061 reviews
Delta
8.1
Very Good
10,966 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.1

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Finnair
7.8
Good
1,385 reviews
Delta
8.1
Very Good
10,966 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.1

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Virgin Atlantic
7.7
Good
746 reviews
Delta
8.1
Very Good
10,966 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.1

Entertainment

8.0

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Related info for your journey

Find useful and relevant information for your journey from London to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from London?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from London. Booking flights from London to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 21 daily inbound flights from London from 14 different airlines.

  • Can I find flights from London to Seattle for under £500 on Cheapflights?

    Yes, there are multiple flights from London to Seattle for under £500. The cheapest flight booked recently is on United Airlines for just £445, but on average you can expect to pay £479.

  • Are there nonstop flights from London to Seattle for under £500 on Cheapflights?

    Cheapflights has at least 20 direct flights from London to Seattle under £500. A good price for a nonstop flight from London to Seattle is less than £510.

  • Are there last-minute flights available from London to Seattle for under £500?

    There are currently 20+ open flights from London to Seattle within the next 7 days for less than £500.

  • What are the cheapest airlines flying from London to Seattle round-trip?

    United Airlines, at £445, was found to be the cheapest airline from London to Seattle.Alternate airlines flying return to your destination include Icelandair and Virgin Atlantic. United Airlines is priced at 16% lower than the current average price of a flight leaving 3 months from now.

  • What are the most popular routes from London to Seattle?

    When deciding which route to take from London to Seattle consider London Heathrow - Seattle/Tacoma Intl, London City - Seattle/Tacoma Intl or London Gatwick - Seattle/Tacoma Intl as they are the most popular.

  • What are the most popular airlines that fly from London to Seattle?

    Before booking your flight from London to Seattle check out the most popular airlines for this route: American Airlines, Air Canada or Air France.

  • What are the most reliable airlines from London to Seattle?

    Consider Aeromexico (85%), Singapore Airlines (85%) or Air France (84%) when booking your flight. These represent the most reliable airlines when flying from London to Seattle.

  • What are the cheapest flights from London to Seattle?

    On average you can expect to pay £1,730 for a flight from London to Seattle. The cheapest flight overall is £497 while the most popular route, (London Heathrow - Seattle/Tacoma Intl) is currently priced at £482.

  • What does LHR to SEA mean?

    London Heathrow Airport is LHR and Seattle/Tacoma Intl Airport is SEA. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN).

  • Can I find deals for flights from London to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your London to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from London to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter London to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from London to Seattle that allow pets onboard?

    Many airlines flying from London to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from London to Seattle?

    Yes, you can often find last-minute deals on London to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the London to Seattle flight deals updated?

    The London to Seattle flight deals you see on this page were last updated on 26/4.

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Fly from London to Seattle on these airlines
Choose from the following airlines for your flight from London to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 26 April 2024.

Virgin Atlantic flights from London to Seattle/Tacoma Intl
British Airways flights from London to Seattle/Tacoma Intl
Finnair flights from London to Seattle/Tacoma Intl

Top 10 airlines flying from London to Seattle

Discover the top 10 airlines that operate flights from London to Seattle. 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 925,685 searches. Data last updated 26 April 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£266Average£584FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
British AirwaysCheapest£341Average£527FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£393Average£608FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£397Average£575FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air CanadaCheapest£433Average£510FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapest£439Average£608FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
LufthansaCheapest£445Average£580FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£448Average£613FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£449Average£517FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air FranceCheapest£451Average£644FlexibilityNo cancel feeOn-time77%
Search Air France flights
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Search flights from London to Seattle by cabin class

Find flights from London to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from London to Seattle

Find hourly flight availability from London to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 April 2024.
0%of flight departuresEarly morningMidnight to 6 am
42%of flight departuresMorning6 am to noon
58%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

Weekly flight availability from London to Seattle

Explore weekly flight availability from London to Seattle. 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 26 April 2024.
Monday20daily flights
Tuesday24daily flights
Wednesday20daily flights
Thursday20daily flights
Friday20daily flights
Saturday25daily flights
Sunday20daily flights

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Seattle?

Cheapflights makes it easy to find London to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from London to Seattle?

Millions of users choose and trust Cheapflights to book the best flight deals from London to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from London to Seattle with no change fees?

Certainly. Search results for flights to Seattle from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from London to Seattle become cheaper?

Yes, Cheapflights offers price alerts on London to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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