Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London to Seattle from £220

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 8/10. 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
13 May — 20 May1
1 adult
Mon 13/5
Mon 20/5

The best prices from London to Seattle/Tacoma Intl are usually found in November or February, booked 43 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 8 May 2024.

Popular in

July

Cheapest in

November

Round-trip from

£474

One-way from

£220
High demand for flights, 23% potential price rise
Search Deals
Best time to find cheap flights, 18% potential price drop
Search Deals
From London (LON) to Seattle/Tacoma Intl
Search Deals
One-way flight from London (LON) to Seattle/Tacoma Intl
Search Deals

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 16% 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 44 days in advance to save up to 35% 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 44 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 £538, or £738 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, November can be a great choice for travel to Seattle. Flights to Seattle from London in November are about £554 on average during November, but can be found for as low as £305.

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 Air Canada flights from London to Seattle

Explore cheap flight options specifically provided by Air Canada 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 876,769 searches. Data last updated 8 May 2024.
Check out some of the cheapest Air Canada 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 18/914:05LHR - SEA
1 stop15h 10mAir Canada
Wed 9/1013:10SEA - LHR
1 stop16h 10mAir Canada
Deal found 7/5£471
Mon 13/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 20/515:10SEA - LHR
1 stop14h 10mAir Canada
Deal found 6/5£491
Wed 4/914:05LHR - SEA
1 stop15h 10mAir Canada
Mon 23/907:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 7/5£504
Wed 4/914:05LHR - SEA
1 stop15h 10mAir Canada
Mon 23/910:40SEA - LHR
2 stops15h 20mAir Canada
Deal found 7/5£513
Tue 17/909:30LHR - SEA
1 stop19h 45mAir Canada
Fri 27/907:40SEA - LHR
1 stop18h 20mAir Canada
Deal found 7/5£520
Sun 12/509:30LHR - SEA
1 stop20h 01mAir Canada
Tue 21/507:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 5/5£522
Mon 13/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 27/510:40SEA - LHR
2 stops15h 20mAir Canada
Deal found 6/5£526
Sun 12/509:30LHR - SEA
1 stop20h 01mAir Canada
Wed 22/511:40SEA - LHR
1 stop12h 55mAir Canada
Deal found 5/5£526
Tue 14/508:30LHR - SEA
1 stop21h 28mAir Canada
Thu 23/507:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 6/5£530

  • Air Canada is one of the most popular airlines used for those travelling from London to Seattle. Flights from Air Canada travelling this route typically cost £712.13 RT. This price is typically 66% more expensive than other airlines that offer London to Seattle flights. When booking this route, the cheapest RT price found was £323. 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, Air Canada flights are 7% more popular than any other airline flying that same route.

Cheap Virgin Atlantic flights from London to Seattle

Explore cheap flight options specifically provided by Virgin Atlantic 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 876,769 searches. Data last updated 8 May 2024.
Browse through some of the cheapest Virgin Atlantic flights travelling from London to Seattle. Ensure the flight price, dates, time, and airline match your criteria before you book.
Wed 18/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Wed 9/1013:35SEA - LHR
1 stop12h 25mVirgin Atlantic
Deal found 7/5£473
Wed 18/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Wed 9/1016:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 7/5£475
Mon 13/516:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Wed 22/516:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 6/5£495
Wed 4/912:00LGW - SEA
1 stop18h 23mVirgin Atlantic
Mon 23/922:55SEA - LGW
1 stop27h 05mVirgin Atlantic
Deal found 7/5£500
Tue 29/1016:35LHR - SEA
Nonstop10h 25mVirgin Atlantic
Sat 25/111:55SEA - LHR
1 stop15h 15mVirgin Atlantic
Deal found 7/5£503
Wed 4/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 23/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 7/5£522
Mon 13/516:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 27/506:00SEA - LHR
1 stop17h 15mVirgin Atlantic
Deal found 6/5£525
Tue 14/516:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Sun 19/506:00SEA - LHR
1 stop17h 15mVirgin Atlantic
Deal found 6/5£534
Tue 22/1016:50LHR - SEA
Nonstop10h 25mVirgin Atlantic
Sat 2/1119:05SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 7/5£535

  • One of the most popular airlines travelling from London to Seattle is Virgin Atlantic. Flights from Virgin Atlantic travelling this route typically cost £780.47 RT. This price is typically 61% cheaper than other airlines that offer London to Seattle flights. When booking this route, the cheapest RT price found was £560. London Heathrow Airport is the most common London airport to take off from when flying to Seattle. Seattle/Tacoma Intl Airport is the most popular arrival airport in Seattle. When flying from London to Seattle, Virgin Atlantic flights are 4% more popular than any other airline flying that same route.

Cheap London to Seattle flights in May & June 2024

Find cheap flight options from London to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 876,769 searches. Prices were last updated on 8 May 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.
Mon 13/509:30LHR - SEA
1 stop20h 01mMultiple Airlines
Wed 22/507:15SEA - LHR
1 stop14h 40mMultiple Airlines
Deal found 6/5£483
Mon 3/613:05LHR - SEA
1 stop15h 30mIcelandair
Mon 10/618:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 6/5£484
Tue 25/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 9/915:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 6/5£488
Mon 13/506:50LHR - SEA
2 stops21h 28mUnited Airlines
Wed 22/512:50SEA - LHR
1 stop12h 50mUnited Airlines
Deal found 6/5£489
Wed 15/510:30LHR - SEA
2 stops19h 01mMultiple Airlines
Tue 21/515:10SEA - LHR
1 stop14h 10mMultiple Airlines
Deal found 6/5£491
Mon 13/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 20/515:10SEA - LHR
1 stop14h 10mAir Canada
Deal found 6/5£491
Tue 25/621:25LHR - SEA
1 stop21h 55mIcelandair
Thu 4/723:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 6/5£494
Mon 13/516:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Wed 22/516:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 6/5£495
Wed 15/510:30LHR - SEA
2 stops19h 01mMultiple Airlines
Wed 22/505:50SEA - LHR
2 stops16h 45mMultiple Airlines
Deal found 6/5£495

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 876,769 searches. Data last updated 8 May 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.
Tue 5/1108:45LHR - SEA
1 stop16h 20mLufthansa
Mon 11/1114:07SEA - LHR
1 stop13h 08mLufthansa
Deal found 7/5£467
Mon 9/912:15LHR - SEA
1 stop15h 59mMultiple Airlines
Thu 26/908:05SEA - LHR
1 stop14h 40mMultiple Airlines
Deal found 6/5£472
Mon 16/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 23/907:20SEA - LHR
1 stop15h 45mVirgin Atlantic
Deal found 6/5£473
Mon 16/909:30LHR - SEA
2 stops16h 56mMultiple Airlines
Mon 23/907:40SEA - LHR
1 stop14h 50mMultiple Airlines
Deal found 6/5£475
Thu 19/912:00LGW - SEA
1 stop15h 01mMultiple Airlines
Tue 8/1015:50SEA - LGW
1 stop11h 55mMultiple Airlines
Deal found 6/5£476
Mon 16/909:30LHR - SEA
2 stops16h 56mMultiple Airlines
Wed 25/907:40SEA - LHR
1 stop14h 50mMultiple Airlines
Deal found 6/5£478
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 30/909:53SEA - LHR
1 stop12h 52mVirgin Atlantic
Deal found 6/5£479
Tue 5/1111:35LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 11/1118:05SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 7/5£479
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 30/921:15SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 6/5£480

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 876,769 searches. Data last updated 8 May 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.
Mon 16/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 23/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 6/5£475
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Mon 30/921:15SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 6/5£480
Mon 9/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Thu 26/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 6/5£483
Tue 29/1011:35LHR - SEA
Nonstop9h 55mVirgin Atlantic
Sat 25/115:20SEA - LHR
Nonstop9h 25mVirgin Atlantic
Deal found 7/5£497
Mon 16/916:50LHR - SEA
Nonstop10h 30mKLM
Thu 26/921:15SEA - LHR
Nonstop9h 35mKLM
Deal found 6/5£506
Thu 19/916:00LHR - SEA
Nonstop9h 45mFinnair
Tue 8/1019:40SEA - LHR
Nonstop9h 20mFinnair
Deal found 6/5£510
Wed 25/909:50LHR - SEA
Nonstop9h 45mFinnair
Wed 30/1019:45SEA - LHR
Nonstop9h 20mFinnair
Deal found 6/5£518
Thu 26/916:00LHR - SEA
Nonstop9h 45mBritish Airways
Wed 2/1019:40SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 6/5£526
Fri 17/509:50LHR - SEA
Nonstop9h 45mBritish Airways
Tue 21/519:40SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 6/5£527

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 876,769 searches. Data last updated 8 May 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 13/509:30LHR - SEA
1 stop20h 01mMultiple Airlines
Wed 22/507:15SEA - LHR
1 stop14h 40mMultiple Airlines
Deal found 6/5£483
Mon 13/506:50LHR - SEA
2 stops21h 28mUnited Airlines
Wed 22/512:50SEA - LHR
1 stop12h 50mUnited Airlines
Deal found 6/5£489
Wed 15/510:30LHR - SEA
2 stops19h 01mMultiple Airlines
Tue 21/515:10SEA - LHR
1 stop14h 10mMultiple Airlines
Deal found 6/5£491
Mon 13/509:30LHR - SEA
1 stop20h 01mAir Canada
Mon 20/515:10SEA - LHR
1 stop14h 10mAir Canada
Deal found 6/5£491
Mon 13/516:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Wed 22/516:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 6/5£495
Wed 15/510:30LHR - SEA
2 stops19h 01mMultiple Airlines
Wed 22/505:50SEA - LHR
2 stops16h 45mMultiple Airlines
Deal found 6/5£495
Tue 14/509:55LHR - SEA
1 stop14h 45mKLM
Wed 22/513:30SEA - LHR
1 stop12h 30mKLM
Deal found 7/5£496
Tue 14/514:50LHR - SEA
2 stops18h 08mUnited Airlines
Tue 21/514:25SEA - LHR
1 stop13h 55mUnited Airlines
Deal found 6/5£497
Tue 14/511:45LHR - SEA
1 stop12h 55mKLM
Tue 21/521:10SEA - LHR
Nonstop9h 40mKLM
Deal found 6/5£498

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 876,769 searches. Data last updated 8 May 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 8/1012:00LGW - SEA
1 stop15h 01mMultiple Airlines
Deal found 6/5£220
Sun 19/506:50LTN - SEA
2 stops38h 06mMultiple Airlines
Deal found 7/5£260
Sun 19/509:40LTN - SEA
3 stops59h 16mMultiple Airlines
Deal found 7/5£269
Tue 1/1012:00LGW - SEA
1 stop16h 21mMultiple Airlines
Deal found 7/5£270
Fri 7/606:30LTN - SEA
2 stops38h 26mMultiple Airlines
Deal found 7/5£270
Fri 6/910:45LGW - SEA
1 stop37h 23mMultiple Airlines
Deal found 7/5£275
Sun 19/521:00STN - SEA
3 stops47h 56mMultiple Airlines
Deal found 7/5£279
Sun 19/507:25LHR - SEA
2 stops37h 31mMultiple Airlines
Deal found 7/5£279
Mon 20/506:00LTN - SEA
2 stops14h 56mMultiple Airlines
Deal found 7/5£286

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 876,769 searches. Data last updated 8 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£471 - £555

Route

Depart

Return

Price

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 18/9

1 stop15h 10m

Seattle/Tacoma Intl

Wed 9/10

1 stop16h 10m

£471

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 18/9

Nonstop9h 55m

Seattle/Tacoma Intl

Wed 9/10

1 stop12h 25m

£473

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 29/10

1 stop28h 35m

Seattle/Tacoma Intl

Sat 25/1

1 stop20h 45m

£475

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 18/9

2 stops16h 56m

Seattle/Tacoma Intl

Wed 9/10

2 stops17h 10m

£483

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 29/10

2 stops18h 07m

Seattle/Tacoma Intl

Fri 24/1

1 stop24h 02m

£506

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 18/9

1 stop18h 20m

Seattle/Tacoma Intl

Tue 8/10

1 stop22h 40m

£510

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sat 21/9

1 stop31h 09m

Seattle/Tacoma Intl

Sat 5/10

1 stop23h 41m

£524

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sat 14/9

2 stops18h 07m

Seattle/Tacoma Intl

Mon 23/9

1 stop13h 30m

£527

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Fri 17/5

Nonstop9h 45m

Seattle/Tacoma Intl

Mon 2/9

1 stop15h 18m

£555

Flights are sorted by cheapest first

Deals found on 7/5

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 3 May 2024.
Booking 43 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 5 May 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 £268 while a return flight costs £503. Price data was last updated on 5 May 2024.

Currently, February is the cheapest month in which you can book a flight from London to Seattle (average of £594). Flying from London to Seattle in July is currently the most expensive (average of £800). 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

£487

February

£474

March

£504

April

£519

May

£544

June

£611

July

£638

August

£609

September

£547

October

£523

November

£478

December

£474

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 8 May 2024.
Read through reviews of airlines operating flights from London to Seattle, such as Air Canada, Virgin Atlantic and Icelandair. 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
10,810 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.1
Very Good
10,810 reviews
Delta
8.1
Very Good
10,810 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

KLM
7.9
Good
1,598 reviews
Delta
8.1
Very Good
10,810 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

SWISS
7.8
Good
2,011 reviews
Delta
8.1
Very Good
10,810 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Finnair
7.8
Good
1,379 reviews
Delta
8.1
Very Good
10,810 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Virgin Atlantic
7.7
Good
740 reviews
Delta
8.1
Very Good
10,810 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.1

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

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 Air Canada for just £471, but on average you can expect to pay £498.

  • 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 £523.

  • 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 days are direct flights available from London to Seattle?

    Days when direct flights are available for this flight are: Wednesday, Saturday.

  • How many flights depart from London to Seattle on average per day?

    4 flight departures from London to Seattle per day on average.
    Morning (6am - Midday) - 100% of flight departures

  • How long is the flight from London to Seattle?

    A quick flight from London to Seattle can take about 9h 55m. Air Canada provides one of the quickest options available for as low as £471. There are 4812 mi between London and Seattle. This flight may include one or multiple stops.

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

    Air Canada, at £471, was found to be the cheapest airline from London to Seattle.Alternate airlines flying return to your destination include Virgin Atlantic and Icelandair. Air Canada is priced at 14% 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 Gatwick - Seattle/Tacoma Intl or London City - 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 Air France (77%), Delta (77%) or Virgin Atlantic (77%) 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 £2,155 for a flight from London to Seattle. The cheapest flight overall is £508 while the most popular route, (London Heathrow - Seattle/Tacoma Intl) is currently priced at £467.

  • 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 7/5.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 8 May 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 876,769 searches. Data last updated 8 May 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£257Average£568FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
British AirwaysCheapest£341Average£526FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£393Average£615FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£399Average£569FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air CanadaCheapest£432Average£509FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapest£435Average£586FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
LufthansaCheapest£442Average£579FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£447Average£623FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£447Average£513FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£450Average£587FlexibilityNo cancel feeOn-time76%
Search Finnair flights
London to Riga flights
Dublin to Istanbul flights
Glasgow to Manchester flights
Edinburgh to Dubai flights
London to Thailand flights
London to Moscow flights
London to Amritsar flights
London to Sao Paulo flights
Edinburgh to Islamabad flights
London to New Jersey flights
Manchester to Abu Dhabi flights
London to Seoul flights

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.
First Class
Business Class
Prem Econ Class
Economy class

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 8 May 2024.
1%of flight departuresEarly morningMidnight to 6 am
59%of flight departuresMorning6 am to noon
40%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 8 May 2024.
Monday20daily flights
Tuesday24daily flights
Wednesday20daily flights
Thursday20daily flights
Friday20daily flights
Saturday25daily flights
Sunday20daily flights

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Lajes
Flights to Guilin
Flights to Elazig
Flights to Şırnak Sirnak Serafettin Elci
Flights to Batumi
Flights to Brive-la-Gaillarde Brive-Dordogne Valley
Flights to Parma
Flights to Rijeka
Flights to La Rochelle Laleu
Flights to Leh
Flights to Clermont-Ferrand Aulnat
Flights to Porto Santo
Flights to Trieste Ronchi dei Legionari
Flights to Jinan
Flights to Cagayan de Oro Laguindingan
Flights to Samarkand
Flights to Niamey
Flights to Rimini Miramare
Flights to Gazipasa
Flights to Toulon Hyeres
Flights to Parikia Paros
Flights to Edremit/Korfez
Flights to Tulum Intl
Flights to Lihue

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines