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Cheap flights from London Heathrow Airport to Seattle from C$ 710

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 15/7. 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 Thursday or Wednesday and return on a Monday

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

Average price

C$ 1,094

Round-trip from

C$ 430
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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Average for round-trip flights in June 2024
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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 Monday. 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 37% 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$ 972. For sooner than that we have options available in the next 3 days from C$ 1,270.

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$ 972. You can even find prices in November for less than C$ 972, 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 33%.

What is the cheapest time of day to fly from LHR to 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 16% 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 437,191 searches. Data last updated 17 June 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.
Mon 9/911:30 a.m.LHR - SEA
1 stop14h 20mDelta
Sun 22/910:59 p.m.SEA - LHR
1 stop13h 11mDelta
Deal found 16/6C$ 939
Tue 10/96:15 a.m.LHR - SEA
1 stop13h 05mDelta
Sun 22/910:59 p.m.SEA - LHR
1 stop13h 11mDelta
Deal found 17/6C$ 946
Mon 9/94:50 p.m.LHR - SEA
Nonstop10h 30mDelta
Tue 24/94:30 p.m.SEA - LHR
Nonstop9h 20mDelta
Deal found 17/6C$ 953
Sun 8/94:50 p.m.LHR - SEA
Nonstop10h 30mDelta
Sun 22/910:59 p.m.SEA - LHR
1 stop13h 11mDelta
Deal found 17/6C$ 1,005
Wed 28/88:40 a.m.LHR - SEA
1 stop15h 55mDelta
Wed 4/94:30 p.m.SEA - LHR
Nonstop9h 20mDelta
Deal found 17/6C$ 1,056
Fri 6/912:45 p.m.LHR - SEA
Nonstop9h 55mDelta
Tue 24/94:30 p.m.SEA - LHR
Nonstop9h 20mDelta
Deal found 17/6C$ 1,068
Mon 2/912:45 p.m.LHR - SEA
Nonstop9h 55mDelta
Sun 15/912:30 a.m.SEA - LHR
1 stop22h 45mDelta
Deal found 17/6C$ 1,081
Thu 5/912:45 p.m.LHR - SEA
Nonstop9h 55mDelta
Wed 18/94:30 p.m.SEA - LHR
Nonstop9h 20mDelta
Deal found 17/6C$ 1,133
Mon 1/74:50 p.m.LHR - SEA
Nonstop10h 25mDelta
Mon 15/79:15 p.m.SEA - LHR
Nonstop9h 35mDelta
Deal found 16/6C$ 1,162

Cheap SWISS flights from Heathrow to Seattle

Explore cheap flight options specifically provided by SWISS 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 437,191 searches. Data last updated 17 June 2024.
Browse through some of the cheapest SWISS flights travelling from London to Seattle. Check back soon if you're not seeing flights that suit your needs.
Tue 2/78:40 a.m.LHR - SEA
2 stops21h 32mSWISS
Tue 1/101:10 p.m.SEA - LHR
2 stops19h 10mSWISS
Deal found 17/6C$ 1,055
Mon 1/76:40 p.m.LHR - SEA
2 stops35h 32mSWISS
Mon 15/71:10 p.m.SEA - LHR
2 stops20h 45mSWISS
Deal found 17/6C$ 1,126
Tue 25/66:00 a.m.LHR - SEA
2 stops20h 26mSWISS
Mon 22/77:00 a.m.SEA - LHR
2 stops26h 55mSWISS
Deal found 17/6C$ 1,421
Wed 26/66:00 a.m.LHR - SEA
2 stops20h 40mSWISS
Wed 10/73:35 p.m.SEA - LHR
2 stops18h 20mSWISS
Deal found 17/6C$ 1,430
Sun 23/612:05 p.m.LHR - SEA
2 stops41h 15mSWISS
Sun 30/61:10 p.m.SEA - LHR
2 stops24h 35mSWISS
Deal found 16/6C$ 1,721

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 437,191 searches. Prices were last updated on 17 June 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.
Tue 2/712:15 p.m.LHR - SEA
1 stop15h 52mMultiple Airlines
Mon 30/910:59 a.m.SEA - LHR
1 stop13h 31mMultiple Airlines
Deal found 17/6C$ 1,040
Tue 2/78:40 a.m.LHR - SEA
2 stops21h 32mSWISS
Tue 1/101:10 p.m.SEA - LHR
2 stops19h 10mSWISS
Deal found 17/6C$ 1,055
Mon 1/74:50 p.m.LHR - SEA
Nonstop10h 25mKLM
Tue 1/109:20 p.m.SEA - LHR
Nonstop9h 30mKLM
Deal found 17/6C$ 1,062
Tue 18/66:40 a.m.LHR - SEA
2 stops23h 20mMultiple Airlines
Tue 10/911:52 a.m.SEA - LHR
2 stops23h 38mMultiple Airlines
Deal found 16/6C$ 1,083
Mon 1/76:30 a.m.LHR - SEA
1 stop13h 45mLufthansa
Mon 15/77:00 a.m.SEA - LHR
1 stop14h 55mLufthansa
Deal found 16/6C$ 1,090
Thu 4/712:15 p.m.LHR - SEA
1 stop15h 52mMultiple Airlines
Wed 2/108:05 a.m.SEA - LHR
1 stop14h 40mMultiple Airlines
Deal found 17/6C$ 1,092
Mon 1/711:45 a.m.LHR - SEA
1 stop30h 30mDelta
Mon 15/79:15 p.m.SEA - LHR
Nonstop9h 35mDelta
Deal found 17/6C$ 1,108
Mon 1/73:20 p.m.LHR - SEA
1 stop35h 22mBrussels Airlines
Mon 15/711:03 a.m.SEA - LHR
1 stop34h 52mBrussels Airlines
Deal found 17/6C$ 1,111
Wed 3/71:05 p.m.LHR - SEA
1 stop17h 21mMultiple Airlines
Tue 16/711:03 a.m.SEA - LHR
1 stop13h 57mMultiple Airlines
Deal found 17/6C$ 1,118

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 437,191 searches. Data last updated 17 June 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.
Fri 6/99:55 a.m.LHR - SEA
2 stops20h 30mMultiple Airlines
Thu 19/911:30 a.m.SEA - LHR
2 stops20h 30mMultiple Airlines
Deal found 16/6C$ 839
Thu 12/96:40 a.m.LHR - SEA
2 stops22h 50mMultiple Airlines
Tue 24/99:40 a.m.SEA - LHR
2 stops22h 20mMultiple Airlines
Deal found 16/6C$ 857
Tue 10/126:40 a.m.LHR - SEA
3 stops25h 15mMultiple Airlines
Tue 7/17:35 a.m.SEA - LHR
2 stops26h 05mMultiple Airlines
Deal found 17/6C$ 869
Tue 24/126:40 a.m.LHR - SEA
2 stops24h 43mMultiple Airlines
Wed 8/17:05 a.m.SEA - LHR
2 stops23h 30mMultiple Airlines
Deal found 16/6C$ 882
Wed 4/96:40 a.m.LHR - SEA
2 stops22h 05mMultiple Airlines
Wed 2/1011:30 a.m.SEA - LHR
2 stops22h 10mMultiple Airlines
Deal found 16/6C$ 887
Tue 1/106:40 a.m.LHR - SEA
2 stops23h 38mMultiple Airlines
Tue 15/1011:45 a.m.SEA - LHR
2 stops21h 55mMultiple Airlines
Deal found 17/6C$ 894
Wed 11/96:30 a.m.LHR - SEA
2 stops16h 00mLufthansa
Thu 26/97:00 a.m.SEA - LHR
1 stop14h 55mLufthansa
Deal found 17/6C$ 897
Tue 24/126:40 a.m.LHR - SEA
2 stops24h 43mMultiple Airlines
Mon 6/17:05 a.m.SEA - LHR
2 stops18h 15mMultiple Airlines
Deal found 16/6C$ 899
Tue 10/91:05 p.m.LHR - SEA
1 stop12h 50mIcelandair
Wed 25/93:50 p.m.SEA - LHR
1 stop12h 05mIcelandair
Deal found 16/6C$ 909

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 437,191 searches. Data last updated 17 June 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.
Thu 12/122:50 p.m.LHR - SEA
Nonstop9h 55mBritish Airways
Mon 30/126:45 p.m.SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 16/6C$ 950
Tue 10/912:45 p.m.LHR - SEA
Nonstop9h 55mDelta
Mon 23/94:30 p.m.SEA - LHR
Nonstop9h 20mDelta
Deal found 17/6C$ 953
Sun 29/99:45 a.m.LHR - SEA
Nonstop9h 45mBritish Airways
Wed 9/107:40 p.m.SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 17/6C$ 971
Fri 20/94:50 p.m.LHR - SEA
Nonstop10h 30mKLM
Tue 8/109:20 p.m.SEA - LHR
Nonstop9h 30mKLM
Deal found 17/6C$ 1,005
Wed 4/94:50 p.m.LHR - SEA
Nonstop10h 30mDelta
Wed 2/109:20 p.m.SEA - LHR
Nonstop9h 30mDelta
Deal found 16/6C$ 1,016
Thu 12/912:45 p.m.LHR - SEA
Nonstop9h 55mDelta
Sun 22/99:15 p.m.SEA - LHR
Nonstop9h 35mDelta
Deal found 17/6C$ 1,057
Tue 2/74:50 p.m.LHR - SEA
Nonstop10h 25mKLM
Tue 1/109:20 p.m.SEA - LHR
Nonstop9h 30mKLM
Deal found 17/6C$ 1,062
Fri 6/912:45 p.m.LHR - SEA
Nonstop9h 55mDelta
Mon 23/94:30 p.m.SEA - LHR
Nonstop9h 20mDelta
Deal found 17/6C$ 1,068
Wed 28/84:50 p.m.LHR - SEA
Nonstop10h 30mDelta
Wed 4/94:30 p.m.SEA - LHR
Nonstop9h 20mDelta
Deal found 17/6C$ 1,081

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 437,191 searches. Data last updated 17 June 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.
Tue 25/66:40 a.m.LHR - SEA
2 stops23h 20mMultiple Airlines
Tue 8/109:30 a.m.SEA - LHR
2 stops22h 30mMultiple Airlines
Deal found 17/6C$ 1,134
Tue 25/64:00 p.m.LHR - SEA
Nonstop9h 45mBritish Airways
Tue 8/101:30 p.m.SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 17/6C$ 1,185
Tue 25/64:00 p.m.LHR - SEA
Nonstop9h 45mBritish Airways
Tue 8/101:30 p.m.SEA - LHR
Nonstop9h 20mBritish Airways
Deal found 15/6C$ 1,186
Tue 25/67:25 a.m.LHR - SEA
1 stop22h 34mJetBlue
Tue 16/711:28 p.m.SEA - LHR
1 stop13h 17mJetBlue
Deal found 17/6C$ 1,217
Tue 25/69:55 a.m.LHR - SEA
1 stop14h 40mDelta
Mon 7/1012:35 a.m.SEA - LHR
1 stop22h 40mDelta
Deal found 17/6C$ 1,307
Tue 25/64:50 p.m.LHR - SEA
Nonstop10h 20mKLM
Tue 8/109:20 p.m.SEA - LHR
Nonstop9h 30mKLM
Deal found 17/6C$ 1,331
Wed 26/68:25 a.m.LHR - SEA
1 stop18h 55mJetBlue
Wed 17/711:28 p.m.SEA - LHR
1 stop13h 17mJetBlue
Deal found 17/6C$ 1,357
Sat 22/69:30 a.m.LHR - SEA
2 stops21h 22mMultiple Airlines
Sat 29/611:53 a.m.SEA - LHR
2 stops22h 47mMultiple Airlines
Deal found 15/6C$ 1,359
Tue 25/64:50 p.m.LHR - SEA
Nonstop10h 20mKLM
Sat 5/109:20 p.m.SEA - LHR
Nonstop9h 30mKLM
Deal found 17/6C$ 1,383

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 437,191 searches. Data last updated 17 June 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 15/72:30 p.m.LHR - SEA
3 stops37h 52mMultiple Airlines
Deal found 16/6C$ 710
Wed 20/112:50 p.m.LHR - SEA
1 stop30h 10mWestJet
Deal found 16/6C$ 853
Tue 26/112:50 p.m.LHR - SEA
1 stop30h 10mWestJet
Deal found 16/6C$ 877
Fri 22/112:35 p.m.LHR - SEA
1 stop30h 25mWestJet
Deal found 16/6C$ 897
Thu 21/112:50 p.m.LHR - SEA
1 stop30h 10mWestJet
Deal found 16/6C$ 921
Sun 1/122:50 p.m.LHR - SEA
2 stops51h 46mWestJet
Deal found 16/6C$ 964
Mon 15/79:25 p.m.LHR - SEA
2 stops27h 57mMultiple Airlines
Deal found 16/6C$ 976
Fri 25/102:10 p.m.LHR - SEA
2 stops25h 46mWestJet
Deal found 17/6C$ 1,016
Tue 27/87:25 a.m.LHR - SEA
1 stop22h 54mJetBlue
Deal found 16/6C$ 1,115

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 437,191 searches. Data last updated 17 June 2024.

Fly from

Any airport

Fly to

Any airport

Budget

C$ 839 - C$ 1,055

Route

Depart

Return

Price

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Fri 6/9

2 stops21h 59m

Seattle/Tacoma Intl

Wed 25/9

2 stops22h 20m

C$ 839

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 9/9

2 stops16h 00m

Seattle/Tacoma Intl

Wed 25/9

1 stop13h 32m

C$ 897

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 10/9

1 stop12h 50m

Seattle/Tacoma Intl

Wed 25/9

1 stop12h 05m

C$ 909

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 11/9

1 stop15h 59m

Seattle/Tacoma Intl

Thu 26/9

1 stop14h 55m

C$ 931

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 9/9

1 stop14h 20m

Seattle/Tacoma Intl

Sun 22/9

1 stop13h 11m

C$ 939

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Wed 4/9

Nonstop9h 45m

Seattle/Tacoma Intl

Wed 2/10

1 stop14h 10m

C$ 957

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sun 8/9

1 stop15h 29m

Seattle/Tacoma Intl

Tue 24/9

Nonstop9h 35m

C$ 1,013

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 2/7

1 stop16h 14m

Seattle/Tacoma Intl

Tue 1/10

2 stops17h 20m

C$ 1,040

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 2/7

2 stops21h 32m

Seattle/Tacoma Intl

Tue 1/10

2 stops19h 10m

C$ 1,055

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 round-trip flight from Heathrow to Seattle. Price data was last updated on 14 June 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 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 round-trip from Heathrow to Seattle. Price data was last updated on 9 June 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 Monday mornings when fares are most often at their lowest. Thursday mornings 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 round-trip 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.
See what other customers who have flown with Delta, SWISS 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
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

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

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

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

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

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

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

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

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

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.

JetBlue
7.6
Good
4,235 reviews
Delta
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Crew

8.6

Entertainment

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?

    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$ 900 on Cheapflights?

    Yes, there are multiple flights from London Heathrow Airport to Seattle for under C$ 900. The cheapest flight booked recently is on Multiple Airlines for just C$ 839, but on average you can expect to pay C$ 920.

  • 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$ 1,086.

  • Are there last-minute flights available from London Heathrow Airport to Seattle for under C$ 1,200?

    There are currently 20+ open flights from London Heathrow Airport to Seattle within the next 7 days for less than C$ 1,200.

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

    Currently priced at C$ 897, Lufthansa will fly you from London Heathrow Airport to Seattle and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and Austrian Airlines - these airlines can fly you to your destination from C$ 909 and C$ 931, respectively. These flights start at 8% 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$ 853), JetBlue (C$ 1,115), and TAP AIR PORTUGAL (C$ 1,252).

  • 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?

    Looking for the cheapest flight from London Heathrow Airport to Seattle? While on average our users pay C$ 1,730, our data indicates the cheapest price to be C$ 1,157. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around C$ 1,123.

  • 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 17/6.

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

    Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Seattle (average of C$ 313). 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.

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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
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 17 June 2024.
Sunday20daily flights
Monday20daily flights
Tuesday24daily flights
Wednesday20daily flights
Thursday20daily flights
Friday20daily flights
Saturday25daily 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 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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