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Cheap flights from London Heathrow Airport to Seattle from C$ 672

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 3/6. 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
14 May — 21 May1
1 adult
Tue 14/5
Tue 21/5

The best prices from London Heathrow to Seattle/Tacoma Intl are usually found in November or February, booked 65 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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 9 May 2024.

Popular in

July

Cheapest in

November

Average price

C$ 985

Round-trip from

C$ 411
High demand for flights, 23% potential price rise
Search Deals
Best time to find cheap flights, 16% potential price drop
Search Deals
Average for round-trip flights in May 2024
Search Deals
From London Heathrow to Seattle/Tacoma Intl
Search Deals

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

Flights from London Heathrow Airport to Seattle are generally found to be more expensive on Thursday. This shouldn't discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Seattle.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 44 days in advance, which can save you up to 35% on flights from London Heathrow Airport to Seattle compared to booking the week you need them. Waiting 44 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at C$ 926. For sooner than that we have options available in the next 3 days from C$ 1,271.

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

The best pricing can be found in the month of November. Prices to Seattle from London Heathrow Airport average C$ 954. You can even find prices in November for less than C$ 954, as users have found deals to Seattle from as low as C$ 525. The month of July appears to be one of the more expensive times to travel to Seattle from London Heathrow Airport. Flying in the targeted month can save you up to 30%.

When is the cheapest time to fly from London Heathrow Airport to Seattle (LHR - SEA)?

When flying from London Heathrow Airport to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 23% versus a flight at noon.

Cheap Delta flights from Heathrow to Seattle

Explore cheap flight options specifically provided by Delta 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 447,598 searches. Data last updated 9 May 2024.
Peruse some of the lowest-priced Delta flights we've found from London to Seattle. Make sure to check back often as deals are often changing.
Thu 12/98:40 a.m.LHR - SEA
1 stop16h 10mDelta
Sun 22/910:55 p.m.SEA - LHR
1 stop13h 15mDelta
Deal found 8/5C$ 905
Wed 15/511:45 a.m.LHR - SEA
1 stop12h 55mDelta
Thu 24/105:30 p.m.SEA - LHR
1 stop15h 00mDelta
Deal found 8/5C$ 919
Wed 15/511:45 a.m.LHR - SEA
1 stop12h 55mDelta
Thu 24/109:10 p.m.SEA - LHR
Nonstop9h 40mDelta
Deal found 8/5C$ 922
Thu 16/56:30 a.m.LHR - SEA
1 stop18h 10mDelta
Sat 18/512:40 a.m.SEA - LHR
1 stop22h 35mDelta
Deal found 8/5C$ 956
Thu 16/59:55 a.m.LHR - SEA
1 stop14h 45mDelta
Wed 29/57:45 a.m.SEA - LHR
1 stop15h 20mDelta
Deal found 8/5C$ 959
Thu 16/58:40 a.m.LHR - SEA
1 stop16h 00mDelta
Wed 29/57:20 a.m.SEA - LHR
1 stop18h 40mDelta
Deal found 8/5C$ 962
Wed 22/511:45 a.m.LHR - SEA
1 stop12h 55mDelta
Wed 29/55:30 a.m.SEA - LHR
1 stop20h 30mDelta
Deal found 8/5C$ 963
Tue 21/58:40 a.m.LHR - SEA
1 stop16h 00mDelta
Tue 28/56:00 a.m.SEA - LHR
1 stop17h 15mDelta
Deal found 7/5C$ 967
Thu 16/54:50 p.m.LHR - SEA
Nonstop10h 30mDelta
Wed 29/57:20 a.m.SEA - LHR
1 stop18h 40mDelta
Deal found 8/5C$ 973

Cheap Virgin Atlantic flights from Heathrow to Seattle

Explore cheap flight options specifically provided by Virgin Atlantic 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 447,598 searches. Data last updated 9 May 2024.
Browse through some of the cheapest Virgin Atlantic flights travelling from London to Seattle. Check back soon if you're not seeing flights that suit your needs.
Fri 20/98:40 a.m.LHR - SEA
1 stop16h 10mVirgin Atlantic
Mon 30/94:30 p.m.SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 8/5C$ 933
Fri 31/56:15 a.m.LHR - SEA
1 stop13h 05mVirgin Atlantic
Mon 3/69:10 p.m.SEA - LHR
Nonstop9h 40mVirgin Atlantic
Deal found 8/5C$ 1,048
Wed 15/51:00 p.m.LHR - SEA
1 stop17h 12mVirgin Atlantic
Sun 26/54:30 p.m.SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 8/5C$ 2,861
Thu 16/512:45 p.m.LHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 27/59:51 a.m.SEA - LHR
1 stop16h 09mVirgin Atlantic
Deal found 9/5C$ 13,050
Wed 15/54:50 p.m.LHR - SEA
Nonstop10h 30mVirgin Atlantic
Sun 26/54:30 p.m.SEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 8/5C$ 18,170

Cheap Heathrow to Seattle flights in May & June 2024

Find cheap flight options from Heathrow 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 447,598 searches. Prices were last updated on 9 May 2024.
Listed are some of the best fares we've found on flights departing from London to Seattle in 2024. Check back regularly for other flight deals.
Wed 15/59:50 a.m.LHR - SEA
Nonstop9h 45mBritish Airways
Thu 24/101:30 p.m.SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 8/5C$ 908
Wed 15/511:45 a.m.LHR - SEA
1 stop12h 55mDelta
Thu 24/105:30 p.m.SEA - LHR
1 stop15h 00mDelta
Deal found 8/5C$ 919
Wed 15/511:45 a.m.LHR - SEA
1 stop12h 55mDelta
Thu 24/109:10 p.m.SEA - LHR
Nonstop9h 40mDelta
Deal found 8/5C$ 922
Sat 8/61:05 p.m.LHR - SEA
1 stop15h 30mIcelandair
Mon 17/611:00 p.m.SEA - LHR
1 stop13h 20mIcelandair
Deal found 8/5C$ 940
Thu 16/56:30 a.m.LHR - SEA
1 stop18h 10mDelta
Sat 18/512:40 a.m.SEA - LHR
1 stop22h 35mDelta
Deal found 8/5C$ 956
Thu 16/59:55 a.m.LHR - SEA
1 stop14h 45mDelta
Wed 29/57:45 a.m.SEA - LHR
1 stop15h 20mDelta
Deal found 8/5C$ 959
Thu 6/61:10 p.m.LHR - SEA
1 stop12h 30mIcelandair
Mon 17/611:00 p.m.SEA - LHR
1 stop13h 20mIcelandair
Deal found 8/5C$ 960
Thu 16/58:40 a.m.LHR - SEA
1 stop16h 00mDelta
Wed 29/57:20 a.m.SEA - LHR
1 stop18h 40mDelta
Deal found 8/5C$ 962
Wed 22/511:45 a.m.LHR - SEA
1 stop12h 55mDelta
Wed 29/55:30 a.m.SEA - LHR
1 stop20h 30mDelta
Deal found 8/5C$ 963

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 447,598 searches. Data last updated 9 May 2024.
Listed are some of the best fares we've found on flights departing from London to Seattle in 2024. Check back regularly for other flight deals.
Wed 27/114:35 p.m.LHR - SEA
Nonstop10h 25mKLM
Mon 16/121:35 p.m.SEA - LHR
1 stop12h 25mKLM
Deal found 8/5C$ 870
Wed 27/114:35 p.m.LHR - SEA
Nonstop10h 25mKLM
Tue 10/126:05 p.m.SEA - LHR
Nonstop9h 35mKLM
Deal found 8/5C$ 874
Wed 27/119:10 a.m.LHR - SEA
1 stop15h 50mKLM
Mon 16/121:35 p.m.SEA - LHR
1 stop12h 25mKLM
Deal found 8/5C$ 888
Mon 2/124:35 p.m.LHR - SEA
Nonstop10h 25mKLM
Thu 12/126:05 p.m.SEA - LHR
Nonstop9h 35mKLM
Deal found 8/5C$ 889
Thu 12/98:40 a.m.LHR - SEA
1 stop16h 10mDelta
Sun 22/910:55 p.m.SEA - LHR
1 stop13h 15mDelta
Deal found 8/5C$ 905
Tue 24/124:35 p.m.LHR - SEA
Nonstop10h 25mKLM
Wed 8/16:05 p.m.SEA - LHR
Nonstop9h 35mKLM
Deal found 8/5C$ 908
Mon 2/129:10 a.m.LHR - SEA
1 stop15h 50mKLM
Mon 16/121:35 p.m.SEA - LHR
1 stop12h 25mKLM
Deal found 8/5C$ 910
Wed 27/114:35 p.m.LHR - SEA
Nonstop10h 25mKLM
Sun 15/126:05 p.m.SEA - LHR
Nonstop9h 35mKLM
Deal found 8/5C$ 911
Mon 25/1111:35 a.m.LHR - SEA
Nonstop9h 55mDelta
Thu 5/1212:35 a.m.SEA - LHR
1 stop22h 30mDelta
Deal found 8/5C$ 918

Direct flights to Seattle from Heathrow

Discover non-stop flight options from Heathrow to Seattle. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 447,598 searches. Data last updated 9 May 2024.
For a shorter flight, select one of these non-stop flights from London to Seattle. Select from other flights from London to Seattle by using the search form above.
Tue 18/612:45 p.m.LHR - SEA
Nonstop9h 55mDelta
Tue 25/69:10 p.m.SEA - LHR
Nonstop9h 40mDelta
Deal found 8/5C$ 987
Sat 14/94:50 p.m.LHR - SEA
Nonstop10h 30mDelta
Sat 21/99:15 p.m.SEA - LHR
Nonstop9h 35mDelta
Deal found 8/5C$ 1,004
Wed 22/512:45 p.m.LHR - SEA
Nonstop9h 55mDelta
Wed 29/54:30 p.m.SEA - LHR
Nonstop9h 20mDelta
Deal found 8/5C$ 1,013
Thu 17/109:45 a.m.LHR - SEA
Nonstop9h 45mBritish Airways
Thu 24/107:40 p.m.SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 8/5C$ 1,014
Mon 2/912:45 p.m.LHR - SEA
Nonstop9h 55mDelta
Mon 16/94:30 p.m.SEA - LHR
Nonstop9h 20mDelta
Deal found 8/5C$ 1,017
Mon 24/64:50 p.m.LHR - SEA
Nonstop10h 20mKLM
Tue 9/79:15 p.m.SEA - LHR
Nonstop9h 35mKLM
Deal found 8/5C$ 1,020
Mon 24/64:50 p.m.LHR - SEA
Nonstop10h 20mKLM
Sun 14/79:15 p.m.SEA - LHR
Nonstop9h 35mKLM
Deal found 8/5C$ 1,039
Tue 11/69:50 a.m.LHR - SEA
Nonstop9h 45mBritish Airways
Tue 9/77:40 p.m.SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 8/5C$ 1,055
Fri 31/54:50 p.m.LHR - SEA
Nonstop10h 30mKLM
Mon 3/69:10 p.m.SEA - LHR
Nonstop9h 40mKLM
Deal found 8/5C$ 1,074

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 447,598 searches. Data last updated 9 May 2024.
Have a look at some of the last-minute flights available departing from London to Seattle. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Wed 15/59:50 a.m.LHR - SEA
Nonstop9h 45mBritish Airways
Thu 24/101:30 p.m.SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 8/5C$ 908
Wed 15/511:45 a.m.LHR - SEA
1 stop12h 55mDelta
Thu 24/105:30 p.m.SEA - LHR
1 stop15h 00mDelta
Deal found 8/5C$ 919
Wed 15/511:45 a.m.LHR - SEA
1 stop12h 55mDelta
Thu 24/109:10 p.m.SEA - LHR
Nonstop9h 40mDelta
Deal found 8/5C$ 922
Thu 16/56:30 a.m.LHR - SEA
1 stop18h 10mDelta
Sat 18/512:40 a.m.SEA - LHR
1 stop22h 35mDelta
Deal found 8/5C$ 956
Thu 16/59:55 a.m.LHR - SEA
1 stop14h 45mDelta
Wed 29/57:45 a.m.SEA - LHR
1 stop15h 20mDelta
Deal found 8/5C$ 959
Thu 16/58:40 a.m.LHR - SEA
1 stop16h 00mDelta
Wed 29/57:20 a.m.SEA - LHR
1 stop18h 40mDelta
Deal found 8/5C$ 962
Thu 16/54:50 p.m.LHR - SEA
Nonstop10h 30mDelta
Sat 18/512:40 a.m.SEA - LHR
1 stop22h 35mDelta
Deal found 8/5C$ 967
Thu 16/511:45 a.m.LHR - SEA
1 stop12h 55mKLM
Wed 29/59:10 p.m.SEA - LHR
Nonstop9h 40mKLM
Deal found 8/5C$ 970
Thu 16/54:50 p.m.LHR - SEA
Nonstop10h 30mDelta
Wed 29/57:20 a.m.SEA - LHR
1 stop18h 40mDelta
Deal found 8/5C$ 973

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 447,598 searches. Data last updated 9 May 2024.
Users in need of a one-way flight from London to Seattle can choose from these deals. For those needing a return trip from London, there is a search form available above.
Mon 3/61:55 p.m.LHR - SEA
1 stop14h 25mWestJet
Deal found 8/5C$ 672
Thu 6/62:10 p.m.LHR - SEA
1 stop14h 10mWestJet
Deal found 8/5C$ 714
Thu 16/52:10 p.m.LHR - SEA
2 stops25h 46mWestJet
Deal found 8/5C$ 780
Sun 3/112:50 p.m.LHR - SEA
2 stops57h 41mWestJet
Deal found 9/5C$ 866
Sun 22/92:10 p.m.LHR - SEA
2 stops32h 38mWestJet
Deal found 8/5C$ 868
Wed 2/102:10 p.m.LHR - SEA
2 stops32h 38mWestJet
Deal found 8/5C$ 933
Fri 20/92:10 p.m.LHR - SEA
2 stops25h 46mWestJet
Deal found 8/5C$ 949
Sat 8/61:05 p.m.LHR - SEA
1 stop12h 35mIcelandair
Deal found 8/5C$ 1,028
Wed 22/58:25 a.m.LHR - SEA
1 stop19h 05mJetBlue
Deal found 8/5C$ 1,083

Find flights from Heathrow to Seattle within your budget

Customize 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 447,598 searches. Data last updated 9 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

C$ 905 - C$ 1,040

Route

Depart

Return

Price

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 12/9

1 stop16h 10m

Seattle/Tacoma Intl

Sun 22/9

1 stop13h 15m

C$ 905

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sat 21/9

2 stops16h 00m

Seattle/Tacoma Intl

Sat 5/10

1 stop14h 55m

C$ 925

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Fri 20/9

1 stop16h 10m

Seattle/Tacoma Intl

Mon 30/9

Nonstop9h 20m

C$ 933

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sat 8/6

1 stop15h 30m

Seattle/Tacoma Intl

Mon 17/6

1 stop13h 20m

C$ 940

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 29/5

1 stop12h 55m

Seattle/Tacoma Intl

Wed 5/6

Nonstop9h 40m

C$ 981

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 28/5

2 stops22h 10m

Seattle/Tacoma Intl

Tue 4/6

1 stop14h 44m

C$ 987

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 17/10

2 stops16h 11m

Seattle/Tacoma Intl

Thu 24/10

1 stop16h 10m

C$ 1,015

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 13/6

Nonstop9h 45m

Seattle/Tacoma Intl

Wed 10/7

1 stop13h 58m

C$ 1,029

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 13/6

1 stop13h 40m

Seattle/Tacoma Intl

Mon 8/7

1 stop13h 58m

C$ 1,040

Flights are sorted by cheapest first

Deals found on 8/5

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Seattle. Price data was last updated on 3 May 2024.
The price you pay for your flight from London Heathrow Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 65 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from Heathrow to Seattle. Price data was last updated on 5 May 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their London Heathrow Airport to Seattle flight should consider departing on Thursday mornings when fares are most often at their lowest. Monday mornings 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 Heathrow to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from Heathrow to Seattle is currently C$ 877 while a round-trip flight costs C$ 973. Price data was last updated on 5 May 2024.

Currently, October is the cheapest month in which you can book a flight from London Heathrow Airport to Seattle (average of C$ 299). Flying from London Heathrow Airport to Seattle in March is currently the most expensive (average of C$ 420). 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

C$ 448

February

C$ 463

March

C$ 577

April

C$ 566

May

C$ 434

June

C$ 522

July

C$ 569

August

C$ 576

September

C$ 556

October

C$ 411

November

C$ 430

December

C$ 486

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 9 May 2024.
See what other customers who have flown with Delta, Virgin Atlantic and KLM from London to Seattle have to say. 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
10,793 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

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
10,793 reviews
Delta
8.1
Very good
10,793 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

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
1,592 reviews
Delta
8.1
Very good
10,793 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

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
2,012 reviews
Delta
8.1
Very good
10,793 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

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
10,793 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

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
739 reviews
Delta
8.1
Very good
10,793 reviews
Check prices

Food

7.4

Boarding

8.2

Comfort

7.9

Crew

8.6

Entertainment

8.0

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 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?

    Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly into when you book flights from London Heathrow to Seattle. 0 airlines have flights to Seattle/Tacoma Intl from London Heathrow on a regular basis. Booking flights from London Heathrow to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 21 inbound flights from London Heathrow per day.

  • Can I find flights from London Heathrow Airport to Seattle for under C$ 1,000 on Cheapflights?

    Yes, there are multiple flights from London Heathrow Airport to Seattle for under C$ 1,000. The cheapest flight booked recently is on Delta for just C$ 905, but on average you can expect to pay C$ 973.

  • Are there direct flights from London Heathrow Airport to Seattle for under C$ 1,000 on Cheapflights?

    Cheapflights has 20 direct flights from London Heathrow Airport to Seattle under C$ 1,000. A good price for a direct flight from London Heathrow Airport to Seattle is less than C$ 1,070.

  • Are there last-minute flights available from London Heathrow Airport to Seattle for under C$ 1,000?

    There are currently 20+ open flights from London Heathrow Airport to Seattle within the next 7 days for less than C$ 1,000.

  • What days are direct flights available from London Heathrow Airport to Seattle?

    Direct flights are available for this route on the following days: Tuesday.

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

    Per day, 3 flights depart from London Heathrow Airport to Seattle on average.
    Afternoon (Noon - 6pm) - 100% of flight departures

  • How long is the flight from London Heathrow Airport to Seattle?

    A quick flight from London Heathrow Airport to Seattle can take about 15h 30m. Delta provides one of the quickest options available for as low as C$ 905. There are 7744 km between London Heathrow Airport and Seattle. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Currently priced at C$ 905, Delta will fly you from London Heathrow Airport to Seattle and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and Icelandair - these airlines can fly you to your destination from C$ 933 and C$ 940, respectively. These flights start at 6% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from London Heathrow Airport to Seattle one-way?

    The cheapest airlines for a one-way flight from London Heathrow Airport to Seattle are WestJet (C$ 672), Icelandair (C$ 1,028), and JetBlue (C$ 1,083).

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

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

    Looking for the cheapest flight from London Heathrow Airport to Seattle? While on average our users pay C$ 1,080, our data indicates the cheapest price to be C$ 914. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around C$ 1,150.

  • 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.

  • 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 vacation 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 8/5.

See more FAQs

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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 9 May 2024.
1%of flight departuresEarly morningMidnight to 6 am
52%of flight departuresMorning6 am to noon
47%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
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 9 May 2024.
Sunday20daily flights
Monday20daily flights
Tuesday24daily flights
Wednesday20daily flights
Thursday20daily flights
Friday20daily flights
Saturday25daily flights

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Fly with Cheapflights

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

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 taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Seattle for you. Better yet — we are completely free to use.

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

Yes, we can. To see specific flights from Heathrow to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Heathrow today and book when prices fit your budget.

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