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Cheap flights from London Heathrow Airport to Seattle from £315

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 15/9. 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.
LHR — SEA
7 Jun — 14 Jun1
1 adult
Fri 7/6
Fri 14/6

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 2 June 2024.

Popular in

July

Cheapest in

November

Round-trip from

£452

One-way from

£315
High demand for flights, 24% potential price rise
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Best time to find cheap flights, 16% potential price drop
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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 35% 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 £547.

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 £546 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 6% 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 909,873 searches. Data last updated 2 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.
Mon 23/906:30LHR - SEA
1 stop13h 45mLufthansa
Tue 8/1015:10SEA - LHR
1 stop14h 10mLufthansa
Deal found 2/6£481
Mon 23/906:30LHR - SEA
2 stops16h 00mLufthansa
Tue 8/1015:10SEA - LHR
1 stop14h 10mLufthansa
Deal found 2/6£496
Sun 27/1020:15LHR - SEA
2 stops23h 55mLufthansa
Wed 13/1115:20SEA - LHR
1 stop12h 30mLufthansa
Deal found 1/6£526
Wed 23/1006:30LHR - SEA
2 stops16h 00mLufthansa
Thu 14/1115:20SEA - LHR
1 stop12h 30mLufthansa
Deal found 1/6£541
Wed 12/609:30LHR - SEA
2 stops16h 57mLufthansa
Tue 25/612:30SEA - LHR
1 stop15h 15mLufthansa
Deal found 1/6£791
Wed 12/612:15LHR - SEA
1 stop15h 55mLufthansa
Sat 22/607:00SEA - LHR
1 stop17h 30mLufthansa
Deal found 1/6£840
Sat 8/606:30LHR - SEA
1 stop13h 55mLufthansa
Fri 21/607:00SEA - LHR
1 stop14h 55mLufthansa
Deal found 1/6£859
Sat 8/606:30LHR - SEA
1 stop13h 55mLufthansa
Sat 15/607:00SEA - LHR
1 stop14h 55mLufthansa
Deal found 1/6£860

  • One of the most popular airlines travelling from London Heathrow Airport to Seattle is Lufthansa. Flights from Lufthansa travelling this route typically cost £672.54 RT. This price is typically 72% cheaper than other airlines that offer London Heathrow Airport to Seattle flights. When booking this route, the cheapest RT price found was £323. The most popular departure airport in London Heathrow Airport 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 Heathrow Airport to Seattle, Lufthansa flights are 7% more popular than any other airline flying that same route.

Cheap Icelandair flights from Heathrow to Seattle

Explore cheap flight options specifically provided by Icelandair 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 909,873 searches. Data last updated 2 June 2024.
To aid your search, here are some of the cheapest Icelandair flights we've found from London to Seattle. Deals frequently update to provide users with more options.
Sun 8/921:25LHR - SEA
1 stop31h 10mIcelandair
Mon 16/918:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 1/6£489
Mon 16/913:05LHR - SEA
1 stop15h 30mIcelandair
Wed 2/1015:50SEA - LHR
1 stop20h 30mIcelandair
Deal found 1/6£490
Thu 21/1120:25LHR - SEA
1 stop28h 35mIcelandair
Thu 5/1214:35SEA - LHR
1 stop20h 45mIcelandair
Deal found 1/6£492
Sun 16/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 24/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 1/6£503
Mon 24/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 1/723:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 1/6£505
Mon 16/913:05LHR - SEA
1 stop15h 30mIcelandair
Sat 28/918:55SEA - LHR
1 stop33h 00mIcelandair
Deal found 1/6£510
Mon 17/621:25LHR - SEA
1 stop21h 55mIcelandair
Sun 30/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 1/6£519
Tue 22/1013:05LHR - SEA
1 stop12h 50mIcelandair
Wed 13/1114:35SEA - LHR
1 stop20h 45mIcelandair
Deal found 1/6£524
Sat 15/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 24/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 1/6£528

  • Icelandair is one of the most popular airlines used for those travelling from London Heathrow Airport to Seattle. Flights from Icelandair travelling this route typically cost £780.47 RT. This price is typically 63% more expensive than other airlines that offer London Heathrow Airport to Seattle flights. When booking this route, the cheapest RT price found was £560. The most popular departure airport in London Heathrow Airport 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 Heathrow Airport to Seattle, Icelandair flights are 4% more popular than any other airline flying that same route.

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 909,873 searches. Prices were last updated on 2 June 2024.
Scroll through some of the best deals on flights from London to Seattle in 2024. Check back soon for alternative fares.
Sun 16/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 24/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 1/6£503
Mon 24/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 1/723:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 1/6£505
Mon 17/621:25LHR - SEA
1 stop21h 55mIcelandair
Sun 30/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 1/6£519
Sat 15/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 24/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 1/6£528
Tue 11/621:25LHR - SEA
1 stop21h 55mIcelandair
Tue 25/623:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 2/6£529
Tue 18/613:05LHR - SEA
1 stop15h 30mIcelandair
Tue 10/918:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 1/6£534
Mon 17/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 24/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 1/6£540
Wed 5/621:25LHR - SEA
1 stop21h 55mIcelandair
Tue 11/618:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 1/6£543
Tue 11/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 24/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 1/6£549

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 909,873 searches. Data last updated 2 June 2024.
Scroll through some of the best deals on flights from London to Seattle in 2024. Check back soon for alternative fares.
Thu 24/1012:45LHR - SEA
Nonstop9h 55mMultiple Airlines
Tue 12/1115:20SEA - LHR
Nonstop9h 25mMultiple Airlines
Deal found 1/6£376
Thu 24/1016:50LHR - SEA
Nonstop10h 25mMultiple Airlines
Tue 12/1106:00SEA - LHR
1 stop16h 50mMultiple Airlines
Deal found 1/6£396
Tue 24/1212:15LHR - SEA
1 stop12h 45mIcelandair
Tue 7/114:35SEA - LHR
1 stop12h 20mIcelandair
Deal found 1/6£474
Mon 16/906:30LHR - SEA
2 stops23h 50mMultiple Airlines
Sun 22/911:35SEA - LHR
1 stop35h 00mMultiple Airlines
Deal found 1/6£486
Wed 11/908:30LHR - SEA
1 stop18h 22mMultiple Airlines
Sun 22/919:05SEA - LHR
2 stops27h 25mMultiple Airlines
Deal found 1/6£488
Sun 8/921:25LHR - SEA
1 stop31h 10mIcelandair
Mon 16/918:55SEA - LHR
1 stop17h 25mIcelandair
Deal found 1/6£489
Thu 21/1116:35LHR - SEA
Nonstop10h 25mVirgin Atlantic
Thu 5/1206:30SEA - LHR
1 stop16h 35mVirgin Atlantic
Deal found 1/6£490
Mon 16/913:05LHR - SEA
1 stop15h 30mIcelandair
Wed 2/1015:50SEA - LHR
1 stop20h 30mIcelandair
Deal found 1/6£490
Thu 21/1120:25LHR - SEA
1 stop28h 35mIcelandair
Thu 5/1214:35SEA - LHR
1 stop20h 45mIcelandair
Deal found 1/6£492

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 909,873 searches. Data last updated 2 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.
Thu 24/1012:45LHR - SEA
Nonstop9h 55mMultiple Airlines
Tue 12/1115:20SEA - LHR
Nonstop9h 25mMultiple Airlines
Deal found 1/6£376
Thu 21/1111:35LHR - SEA
Nonstop9h 55mVirgin Atlantic
Thu 5/1215:20SEA - LHR
Nonstop9h 25mVirgin Atlantic
Deal found 1/6£494
Thu 24/1016:50LHR - SEA
Nonstop10h 25mDelta
Sun 10/1118:05SEA - LHR
Nonstop9h 35mDelta
Deal found 1/6£509
Fri 25/1016:50LHR - SEA
Nonstop10h 25mDelta
Thu 14/1115:20SEA - LHR
Nonstop9h 25mDelta
Deal found 1/6£512
Mon 16/916:50LHR - SEA
Nonstop10h 30mKLM
Wed 2/1021:10SEA - LHR
Nonstop9h 40mKLM
Deal found 1/6£515
Sat 5/1012:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Thu 10/1021:10SEA - LHR
Nonstop9h 40mVirgin Atlantic
Deal found 1/6£518
Mon 16/916:50LHR - SEA
Nonstop10h 30mVirgin Atlantic
Sun 22/921:15SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 1/6£531
Wed 3/716:50LHR - SEA
Nonstop10h 25mVirgin Atlantic
Wed 4/1218:05SEA - LHR
Nonstop9h 35mVirgin Atlantic
Deal found 1/6£542
Wed 11/912:45LHR - SEA
Nonstop9h 55mVirgin Atlantic
Sun 22/916:30SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 1/6£545

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 909,873 searches. Data last updated 2 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.
Tue 11/621:25LHR - SEA
1 stop21h 55mIcelandair
Mon 24/623:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 1/6£549
Fri 7/621:25LHR - SEA
1 stop31h 10mIcelandair
Mon 10/618:55SEA - LHR
1 stop33h 00mIcelandair
Deal found 1/6£563
Fri 7/611:15LHR - SEA
1 stop19h 35mFinnair
Mon 10/607:06SEA - LHR
1 stop21h 39mFinnair
Deal found 1/6£597
Tue 11/621:25LHR - SEA
1 stop21h 55mIcelandair
Wed 26/618:55SEA - LHR
1 stop33h 00mIcelandair
Deal found 1/6£616
Mon 10/616:55LHR - SEA
1 stop29h 02mFinnair
Thu 13/606:02SEA - LHR
1 stop16h 23mFinnair
Deal found 1/6£618
Fri 7/612:15LHR - SEA
1 stop32h 16mFinnair
Fri 14/608:30SEA - LHR
1 stop16h 30mFinnair
Deal found 1/6£621
Wed 12/613:05LHR - SEA
1 stop12h 35mIcelandair
Tue 25/623:00SEA - LHR
1 stop13h 20mIcelandair
Deal found 1/6£623
Fri 7/621:25LHR - SEA
1 stop28h 15mIcelandair
Fri 14/618:55SEA - LHR
1 stop33h 00mIcelandair
Deal found 31/5£671
Sun 9/621:25LHR - SEA
1 stop28h 15mIcelandair
Sat 3/823:00SEA - LHR
1 stop28h 55mIcelandair
Deal found 1/6£682

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 909,873 searches. Data last updated 2 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.
Sun 15/907:25LHR - SEA
2 stops37h 31mMultiple Airlines
Deal found 1/6£315
Sun 16/607:25LHR - SEA
2 stops37h 31mMultiple Airlines
Deal found 31/5£315
Mon 17/607:55LHR - SEA
2 stops37h 01mMultiple Airlines
Deal found 1/6£344
Mon 17/607:55LHR - SEA
2 stops37h 01mMultiple Airlines
Deal found 31/5£344
Sun 16/607:25LHR - SEA
2 stops44h 56mMultiple Airlines
Deal found 1/6£348
Wed 19/607:55LHR - SEA
2 stops37h 01mMultiple Airlines
Deal found 1/6£351
Fri 21/620:50LHR - SEA
2 stops42h 57mMultiple Airlines
Deal found 1/6£352
Mon 17/621:10LHR - SEA
3 stops43h 22mMultiple Airlines
Deal found 31/5£355
Mon 26/819:15LHR - SEA
3 stops34h 33mMultiple Airlines
Deal found 1/6£358

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 909,873 searches. Data last updated 2 June 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£376 - £558

Route

Depart

Return

Price

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 24/10

Nonstop9h 55m

Seattle/Tacoma Intl

Tue 12/11

Nonstop9h 25m

£376

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 23/9

1 stop13h 45m

Seattle/Tacoma Intl

Tue 8/10

1 stop14h 10m

£481

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sun 8/9

1 stop31h 10m

Seattle/Tacoma Intl

Mon 16/9

1 stop17h 25m

£489

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 21/11

Nonstop10h 25m

Seattle/Tacoma Intl

Thu 5/12

1 stop16h 35m

£490

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 24/10

Nonstop10h 25m

Seattle/Tacoma Intl

Sun 10/11

Nonstop9h 35m

£509

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 24/10

Nonstop10h 25m

Seattle/Tacoma Intl

Tue 12/11

Nonstop9h 35m

£512

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 7/11

1 stop13h 40m

Seattle/Tacoma Intl

Sun 17/11

2 stops17h 20m

£541

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sun 27/10

Nonstop9h 55m

Seattle/Tacoma Intl

Wed 13/11

Nonstop9h 20m

£545

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 3/7

1 stop34h 21m

Seattle/Tacoma Intl

Wed 4/12

1 stop32h 45m

£558

Flights are sorted by cheapest first

Deals found on 1/6

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 24 May 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 26 May 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

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 2 June 2024.
Get a feel of what it's like to fly with Lufthansa, Icelandair and Virgin Atlantic 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
10,410 reviews
Check prices

Boarding

8.2

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Crew

8.6

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
10,410 reviews
Delta
8.0
Very Good
10,410 reviews
Check prices

Boarding

8.2

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Crew

8.6

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
1,507 reviews
Delta
8.0
Very Good
10,410 reviews
Check prices

Boarding

8.2

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Crew

8.6

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
1,368 reviews
Delta
8.0
Very Good
10,410 reviews
Check prices

Boarding

8.2

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Crew

8.6

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
1,016 reviews
Delta
8.0
Very Good
10,410 reviews
Check prices

Boarding

8.2

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Crew

8.6

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
7.6
Good
720 reviews
Delta
8.0
Very Good
10,410 reviews
Check prices

Boarding

8.2

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Crew

8.6

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 £400 on Cheapflights?

    Yes, there are multiple flights from London Heathrow Airport to Seattle for under £400. The cheapest flight booked recently is on Multiple Airlines for just £376, but on average you can expect to pay £483.

  • Are there nonstop flights from London Heathrow Airport to Seattle for under £400 on Cheapflights?

    Cheapflights has at least 20 direct flights from London Heathrow Airport to Seattle under £400. A good price for a nonstop flight from London Heathrow Airport to Seattle is less than £534.

  • 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, Lufthansa (£481), Icelandair (£489), and Virgin Atlantic (£490) offers the cheapest pricing from London Heathrow Airport to Seattle. Lufthansa is priced at 13% 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 (73%), Aer Lingus (73%) or Finnair (73%) 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 £487. On average you can expect to pay £1,961. The most popular route, (London Heathrow - Seattle/Tacoma Intl), can usually be booked for £473.

  • 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 1/6.

  • 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 £809). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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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 2 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 909,873 searches. Data last updated 2 June 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£253Average£528FlexibilityNo cancel feeOn-timeN/A
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Virgin AtlanticCheapest£390Average£569FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£413Average£566FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£416Average£560FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
American AirlinesCheapest£427Average£586FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest£427Average£506FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£434Average£569FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£436Average£509FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£440Average£612FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£443Average£595FlexibilityNo cancel feeOn-time76%
Search Finnair flights
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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.
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 2 June 2024.
1%of flight departuresEarly morningMidnight to 6 am
60%of flight departuresMorning6 am to noon
39%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 2 June 2024.
Monday20daily flights
Tuesday24daily flights
Wednesday20daily flights
Thursday20daily flights
Friday20daily flights
Saturday25daily flights
Sunday20daily flights

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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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