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Cheap flights from London Heathrow Airport to Seattle from £307

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 7/10. 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.
LHR — SEA
22 Jun — 29 Jun1
1 adult
Sat 22/6
Sat 29/6

The best prices from London Heathrow to Seattle/Tacoma Intl are usually found in November or February, booked 48 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Heathrow to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 17 June 2024.

Popular in

July

Cheapest in

November

Round-trip from

£454

One-way from

£375
High demand for flights, 24% potential price rise
Search Deals
Best time to find cheap flights, 16% potential price drop
Search Deals
From London Heathrow to Seattle/Tacoma Intl
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One-way flight from London Heathrow to Seattle/Tacoma Intl
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What is the cheapest day to fly round-trip from London Heathrow Airport to Seattle?

Users have found that flying from London Heathrow Airport to Seattle on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

Find a great deal and save up to 37% by booking at least 44 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London Heathrow Airport to Seattle within the next two weeks, with the cheapest ticket starting at £558.

What is the cheapest month to fly from London Heathrow Airport 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 Heathrow Airport in November are about £558 on average during November, but can be found for as low as £301.

What is the cheapest time of day to fly from LHR to SEA?

It’s typically best to fly out from London Heathrow Airport to Seattle in the evening. Doing so could potentially save you 7% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap Lufthansa flights from Heathrow to Seattle

Explore cheap flight options specifically provided by Lufthansa for the route between Heathrow 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 976,051 searches. Data last updated 17 June 2024.
Take a peek at the cheapest Lufthansa flights we've detected travelling from London to Seattle. Make sure to check back often as deals are often changing.
Wed 11/906:30LHR - SEA
2 stops16h 00mLufthansa
Thu 26/907:00SEA - LHR
1 stop14h 55mLufthansa
Deal found 17/6£515
Fri 13/906:30LHR - SEA
2 stops16h 00mLufthansa
Mon 23/915:10SEA - LHR
2 stops36h 40mLufthansa
Deal found 16/6£542
Tue 10/906:30LHR - SEA
1 stop13h 45mLufthansa
Sat 21/914:13SEA - LHR
1 stop13h 32mLufthansa
Deal found 16/6£553

Cheap Air Canada flights from Heathrow to Seattle

Explore cheap flight options specifically provided by Air Canada for the route between Heathrow 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 976,051 searches. Data last updated 17 June 2024.
To aid your search, here are some of the cheapest Air Canada flights we've found from London to Seattle. Deals frequently update to provide users with more options.
Fri 13/909:30LHR - SEA
1 stop19h 45mAir Canada
Mon 23/907:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 17/6£560
Sat 7/912:05LHR - SEA
1 stop17h 10mAir Canada
Thu 26/907:40SEA - LHR
1 stop14h 50mAir Canada
Deal found 16/6£596

Cheap Heathrow to Seattle flights in June & July 2024

Find cheap flight options from Heathrow to Seattle specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 976,051 searches. Prices were last updated on 17 June 2024.
Scroll through some of the best deals on flights from London to Seattle in 2024. Check back soon for alternative fares.
Tue 25/621:25LHR - SEA
1 stop21h 55mIcelandair
Sat 6/723:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 17/6£545
Mon 24/621:25LHR - SEA
1 stop21h 55mIcelandair
Sun 14/718:55SEA - LHR
1 stop33h 00mIcelandair
Deal found 17/6£556
Tue 18/621:25LHR - SEA
1 stop21h 55mIcelandair
Tue 25/615:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 17/6£565
Mon 24/621:25LHR - SEA
1 stop21h 55mIcelandair
Tue 2/715:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 17/6£569
Tue 2/713:05LHR - SEA
1 stop17h 21mLufthansa
Tue 1/1007:00SEA - LHR
1 stop14h 55mLufthansa
Deal found 17/6£570
Tue 2/708:30LHR - SEA
1 stop18h 12mMultiple Airlines
Tue 1/1007:40SEA - LHR
1 stop18h 20mMultiple Airlines
Deal found 17/6£572
Tue 18/621:25LHR - SEA
1 stop21h 55mIcelandair
Tue 10/918:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 16/6£573
Mon 24/621:25LHR - SEA
1 stop21h 55mIcelandair
Sun 30/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 17/6£575
Tue 2/713:05LHR - SEA
2 stops39h 02mMultiple Airlines
Tue 1/1013:10SEA - LHR
2 stops14h 40mMultiple Airlines
Deal found 16/6£576

Heathrow to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Heathrow and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 976,051 searches. Data last updated 17 June 2024.
Scroll through some of the best deals on flights from London to Seattle in 2024. Check back soon for alternative fares.
Tue 5/1120:25LHR - SEA
1 stop28h 35mIcelandair
Tue 19/1114:35SEA - LHR
1 stop12h 20mIcelandair
Deal found 16/6£471
Tue 8/1021:25LHR - SEA
1 stop28h 30mIcelandair
Tue 22/1015:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 17/6£478
Fri 6/906:40LHR - SEA
2 stops21h 59mMultiple Airlines
Wed 25/909:40SEA - LHR
2 stops22h 20mMultiple Airlines
Deal found 16/6£482
Wed 2/1013:05LHR - SEA
1 stop12h 50mIcelandair
Wed 16/1015:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 17/6£483
Wed 2/1013:05LHR - SEA
1 stop12h 50mIcelandair
Wed 16/1015:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 16/6£487
Tue 5/1120:25LHR - SEA
1 stop28h 35mIcelandair
Mon 11/1114:35SEA - LHR
1 stop20h 45mIcelandair
Deal found 17/6£489
Mon 9/921:25LHR - SEA
1 stop28h 30mIcelandair
Wed 18/918:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 16/6£491
Thu 12/906:40LHR - SEA
2 stops22h 50mMultiple Airlines
Wed 25/911:30SEA - LHR
2 stops20h 30mMultiple Airlines
Deal found 17/6£492
Tue 10/913:05LHR - SEA
1 stop15h 30mIcelandair
Thu 26/918:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 17/6£493

Direct flights to Seattle from Heathrow

Discover direct flight options from Heathrow 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 976,051 searches. Data last updated 17 June 2024.
Consider booking one of these non-stop flights heading from London to Seattle. If you're looking for other options for flights from London to Seattle, make sure to update the search form at the top of page.
Tue 10/1214:50LHR - SEA
Nonstop9h 55mFinnair
Tue 7/118:45SEA - LHR
Nonstop9h 20mFinnair
Deal found 17/6£511
Mon 21/1009:50LHR - SEA
Nonstop9h 45mFinnair
Fri 1/1114:35SEA - LHR
Nonstop9h 25mFinnair
Deal found 17/6£519
Wed 2/1016:00LHR - SEA
Nonstop9h 45mFinnair
Wed 16/1019:40SEA - LHR
Nonstop9h 20mFinnair
Deal found 17/6£522
Tue 5/1114:50LHR - SEA
Nonstop9h 55mBritish Airways
Mon 11/1118:45SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 17/6£524
Tue 10/1214:50LHR - SEA
Nonstop9h 55mFinnair
Tue 17/1213:35SEA - LHR
Nonstop9h 25mFinnair
Deal found 17/6£527
Wed 11/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Thu 26/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 17/6£528
Tue 1/1009:50LHR - SEA
Nonstop9h 45mFinnair
Tue 15/1019:40SEA - LHR
Nonstop9h 20mFinnair
Deal found 17/6£532
Tue 5/1114:50LHR - SEA
Nonstop9h 55mBritish Airways
Tue 12/1113:35SEA - LHR
Nonstop9h 25mBritish Airways
Deal found 17/6£536
Tue 22/1009:50LHR - SEA
Nonstop9h 45mFinnair
Sat 2/1119:45SEA - LHR
Nonstop9h 20mFinnair
Deal found 17/6£537

Heathrow to Seattle flights leaving soon

Find last-minute flight options from Heathrow 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 976,051 searches. Data last updated 17 June 2024.
Have a look at some of the flights available from London to Seattle departing last-minute. Users should examine the flight details to ensure there are no surprises.
Mon 24/621:25LHR - SEA
1 stop21h 55mIcelandair
Sun 14/718:55SEA - LHR
1 stop33h 00mIcelandair
Deal found 17/6£556
Mon 24/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 1/718:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 17/6£602
Wed 26/621:25LHR - SEA
1 stop21h 55mIcelandair
Wed 10/723:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 16/6£620
Wed 26/621:25LHR - SEA
1 stop21h 55mIcelandair
Wed 10/715:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 17/6£632
Sun 23/621:25LHR - SEA
1 stop31h 10mIcelandair
Sun 30/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 16/6£633
Tue 25/606:40LHR - SEA
2 stops23h 20mMultiple Airlines
Tue 8/1009:30SEA - LHR
2 stops22h 30mMultiple Airlines
Deal found 17/6£651
Tue 25/621:25LHR - SEA
1 stop21h 55mIcelandair
Thu 11/715:50SEA - LHR
1 stop12h 05mIcelandair
Deal found 17/6£657
Tue 25/621:25LHR - SEA
1 stop21h 55mIcelandair
Thu 11/723:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 16/6£659
Tue 25/611:40LHR - SEA
1 stop18h 06mAmerican Airlines
Tue 8/1009:00SEA - LHR
1 stop16h 00mAmerican Airlines
Deal found 16/6£661

One-way flights to Seattle from Heathrow

Search for one-way flight options from Heathrow 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 976,051 searches. Data last updated 17 June 2024.
If you're seeking multiple options on one-way flights from London to Seattle, be sure to check out these deals, which are updated often. Those needing a return flight from London to Seattle can use the search form above.
Mon 7/1014:30LHR - SEA
2 stops28h 07mMultiple Airlines
Deal found 16/6£307
Wed 4/906:55LHR - SEA
2 stops21h 26mMultiple Airlines
Deal found 17/6£315
Tue 17/916:05LHR - SEA
2 stops36h 21mMultiple Airlines
Deal found 16/6£324
Sat 21/922:00LHR - SEA
3 stops30h 26mMultiple Airlines
Deal found 16/6£357
Tue 27/807:05LHR - SEA
2 stops23h 26mMultiple Airlines
Deal found 17/6£359
Mon 30/920:50LHR - SEA
3 stops31h 36mMultiple Airlines
Deal found 17/6£360
Mon 30/919:15LHR - SEA
2 stops33h 11mMultiple Airlines
Deal found 17/6£374
Sun 27/1020:25LHR - SEA
1 stop28h 30mIcelandair
Deal found 17/6£375
Mon 12/810:35LHR - SEA
3 stops34h 21mMultiple Airlines
Deal found 16/6£378

Find flights from Heathrow to Seattle within your budget

Customise your flight search to find flights from Heathrow 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 976,051 searches. Data last updated 17 June 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£471 - £536

Route

Depart

Return

Price

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 5/11

1 stop28h 35m

Seattle/Tacoma Intl

Tue 19/11

1 stop12h 20m

£471

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Fri 6/9

2 stops21h 59m

Seattle/Tacoma Intl

Thu 26/9

2 stops20h 30m

£482

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 9/9

Nonstop10h 30m

Seattle/Tacoma Intl

Mon 23/9

Nonstop9h 20m

£509

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 30/9

Nonstop9h 45m

Seattle/Tacoma Intl

Tue 15/10

Nonstop9h 20m

£510

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 11/9

2 stops16h 00m

Seattle/Tacoma Intl

Thu 26/9

1 stop14h 55m

£515

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 2/10

Nonstop9h 45m

Seattle/Tacoma Intl

Wed 16/10

1 stop14h 45m

£517

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 9/9

1 stop17h 10m

Seattle/Tacoma Intl

Tue 24/9

1 stop14h 05m

£530

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 11/9

1 stop15h 59m

Seattle/Tacoma Intl

Thu 26/9

1 stop14h 55m

£534

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 10/12

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 16/12

1 stop21h 40m

£536

Flights are sorted by cheapest first

Deals found on 16/6

How far ahead should I book a flight from London Heathrow Airport to Seattle?

Use this chart to determine the optimal time to book a return flight from Heathrow to Seattle. Price data was last updated on 14 June 2024.
The best time to book flights from London Heathrow Airport to Seattle is 48 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

What is the cheapest day to fly from London Heathrow Airport to Seattle?

Use this chart to determine the cheapest time to fly return from Heathrow to Seattle. Price data was last updated on 9 June 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their London Heathrow Airport to Seattle flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Heathrow to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Heathrow with our price prediction graph.
Estimated return 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.

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

If weather is an important factor for your trip to Seattle, 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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 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 17 June 2024.
Get a feel of what it's like to fly with Lufthansa, Air Canada and Air France from London to Seattle by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

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
8.0
Very Good
10,000 reviews
Delta
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

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
1,449 reviews
Delta
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

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
7.7
Good
1,887 reviews
Delta
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

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
7.7
Good
1,352 reviews
Delta
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

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.

Austrian Airlines
7.7
Good
979 reviews
Delta
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.2

Food

7.4

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.0

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 Heathrow 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 Heathrow?

    If you book a flight to Seattle from London Heathrow, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 21 flights from London Heathrow to Seattle/Tacoma Intl per day from 14 different airlines.

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

    Yes, there are multiple flights from London Heathrow Airport to Seattle for under £500. The cheapest flight booked recently is on Icelandair for just £471, but on average you can expect to pay £493.

  • Are there nonstop flights from London Heathrow Airport to Seattle for under £600 on Cheapflights?

    Cheapflights has at least 20 direct flights from London Heathrow Airport to Seattle under £600. A good price for a nonstop flight from London Heathrow Airport to Seattle is less than £541.

  • Are there last-minute flights available from London Heathrow Airport to Seattle for under £600?

    There are currently 20+ open flights from London Heathrow Airport to Seattle within the next 7 days for less than £600.

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

    According to our current data, Icelandair (£471), Virgin Atlantic (£509), and Finnair (£510) offers the cheapest pricing from London Heathrow Airport to Seattle. Icelandair is priced at 16% lower than the current average price of a flight leaving 3 months from now.

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

    Consider American Airlines (68%), Aer Lingus (68%) or Finnair (68%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Seattle.

  • What are the cheapest flights from London Heathrow Airport to Seattle?

    The cheapest flight price from London Heathrow Airport to Seattle is £498. On average you can expect to pay £1,791. The most popular route, (London Heathrow - Seattle/Tacoma Intl), can usually be booked for £471.

  • What does LHR to SEA mean?

    This is defined as London Heathrow Airport (LHR) and Seattle/Tacoma Intl Airport (SEA). Codes like Seattle/Tacoma Intl Airport are often used to just call airports uniquely.

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

    The amount of baggage you can bring on your Heathrow 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 Heathrow to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Heathrow 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 Heathrow to Seattle that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow to Seattle that allow pets onboard?

    Many airlines flying from Heathrow 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 Heathrow to Seattle?

    Yes, you can often find last-minute deals on Heathrow 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 Heathrow Airport to Seattle flight deals updated?

    The London Heathrow Airport to Seattle flight deals you see on this page were last updated on 17/6.

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

    When booking a flight from London Heathrow Airport to Seattle, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.

  • What is the cheapest month to book a flight from London Heathrow Airport to Seattle?

    Currently, December is the cheapest month in which you can book a flight from London Heathrow Airport to Seattle (average of £576). Flying from London Heathrow Airport to Seattle in July is currently the most expensive (average of £823). 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

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 Heathrow to Seattle on these airlines
Choose from the following airlines for your flight from Heathrow to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 17 June 2024.

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

Top 10 airlines flying from Heathrow to Seattle

Discover the top 10 airlines that operate flights from Heathrow 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 976,051 searches. Data last updated 17 June 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£254Average£501FlexibilityNo cancel feeOn-timeN/A
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Search flights from Heathrow to Seattle by cabin class

Find flights from Heathrow 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 Heathrow to Seattle

Find hourly flight availability from Heathrow 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 17 June 2024.
1%of flight departuresEarly morningMidnight to 6 am
55%of flight departuresMorning6 am to noon
44%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

Weekly flight availability from Heathrow to Seattle

Explore weekly flight availability from Heathrow 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 17 June 2024.
Monday20daily flights
Tuesday24daily flights
Wednesday20daily flights
Thursday20daily flights
Friday20daily flights
Saturday25daily flights
Sunday20daily flights

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Fly with Cheapflights

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

Deals for Heathrow to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights helps you find that perfect flight to Seattle from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Need flexible booking options for your flight to Seattle from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for Heathrow to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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