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Cheap flights from Heathrow (LHR) to Seattle (SEA) from $299

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 6/3. 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
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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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 May 16, 2024.

Popular in

July

Cheapest in

November

Average price

$718

Round-trip from

$247
High demand for flights, 23% 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 May 2024
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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?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Seattle. Check prices with Cheapflights to find a great deal 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 $674.

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

November can be a great time to fly to Seattle from London Heathrow Airport with a flight ticket averaging about $694. Cheapflights users have found deals in the month of November for as cheap as $382. The most expensive prices can be found in the month of July.

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

One of the essential ways to save on airfare from London Heathrow Airport to Seattle is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 21% on airfare.

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 2,637,452 searches. Data last updated May 16, 2024.
Check out some of the cheapest Icelandair flights we've come across from London to Seattle. Deals update often to give you more flight options matching your criteria
Tue 10/19:25 pmLHR - SEA
1 stop28h 30mIcelandair
Tue 11/52:35 pmSEA - LHR
1 stop20h 45mIcelandair
Deal found 5/15$521
Wed 9/119:25 pmLHR - SEA
1 stop31h 10mIcelandair
Tue 9/246:55 pmSEA - LHR
1 stop17h 25mIcelandair
Deal found 5/15$523
Tue 9/171:05 pmLHR - SEA
1 stop15h 30mIcelandair
Wed 9/256:55 pmSEA - LHR
1 stop33h 00mIcelandair
Deal found 5/16$525
Thu 9/59:25 pmLHR - SEA
1 stop21h 55mIcelandair
Thu 9/126:55 pmSEA - LHR
1 stop33h 00mIcelandair
Deal found 5/15$526
Sat 9/79:25 pmLHR - SEA
1 stop28h 15mIcelandair
Sat 9/146:55 pmSEA - LHR
1 stop33h 00mIcelandair
Deal found 5/16$527
Thu 10/31:10 pmLHR - SEA
1 stop15h 25mIcelandair
Tue 10/83:50 pmSEA - LHR
1 stop12h 05mIcelandair
Deal found 5/15$531
Fri 9/69:25 pmLHR - SEA
1 stop21h 55mIcelandair
Mon 9/96:55 pmSEA - LHR
1 stop33h 00mIcelandair
Deal found 5/16$534
Mon 9/29:25 pmLHR - SEA
1 stop21h 55mIcelandair
Sat 9/711:00 pmSEA - LHR
1 stop13h 20mIcelandair
Deal found 5/15$535
Mon 9/169:25 pmLHR - SEA
1 stop31h 10mIcelandair
Mon 9/236:55 pmSEA - LHR
1 stop17h 25mIcelandair
Deal found 5/15$536

  • One of the most popular airlines traveling from London Heathrow Airport to Seattle is Icelandair. London Heathrow Airport to Seattle flights are typically 69% cheaper than other airlines traveling the same route. Flights from Icelandair typically cost $758.90 RT. The cheapest Icelandair flight found for this route was $568. 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 10% more popular than any other airline flying that same route.

Cheap British Airways flights from Heathrow to Seattle

Explore cheap flight options specifically provided by British Airways 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 2,637,452 searches. Data last updated May 16, 2024.
To aid your search, here are some of the cheapest British Airways flights we've found from London to Seattle. Ensure the flight price, dates, time, and airline match your criteria before you book.
Tue 10/19:50 amLHR - SEA
Nonstop9h 45mBritish Airways
Tue 11/56:45 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 5/15$594
Tue 10/89:50 amLHR - SEA
Nonstop9h 45mBritish Airways
Tue 10/297:50 amSEA - LHR
1 stop15h 30mBritish Airways
Deal found 5/15$598
Wed 9/259:50 amLHR - SEA
Nonstop9h 45mBritish Airways
Wed 10/97:40 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 5/16$617
Tue 10/224:00 pmLHR - SEA
Nonstop9h 45mBritish Airways
Sat 11/22:45 pmSEA - LHR
Nonstop9h 25mBritish Airways
Deal found 5/16$620
Fri 10/259:50 amLHR - SEA
Nonstop9h 45mBritish Airways
Tue 10/297:50 amSEA - LHR
1 stop15h 30mBritish Airways
Deal found 5/16$621
Tue 10/19:50 amLHR - SEA
Nonstop9h 45mBritish Airways
Thu 10/107:40 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 5/15$625
Thu 10/39:45 amLHR - SEA
Nonstop9h 45mBritish Airways
Wed 10/97:40 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 5/15$644
Tue 10/19:50 amLHR - SEA
Nonstop9h 45mBritish Airways
Tue 10/87:40 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 5/15$661
Tue 5/289:50 amLHR - SEA
Nonstop9h 45mBritish Airways
Tue 6/41:30 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 5/15$747

  • British Airways is one of the most popular airlines used for those traveling from London Heathrow Airport to Seattle. Flights on this route from British Airways typically cost $769.78 RT, a price that is 77% more expensive than the average London Heathrow Airport to Seattle flight. The cheapest flight found was $537 RT. 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, British Airways flights are 5% more popular than any other airline flying that same route.

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 2,637,452 searches. Prices were last updated on May 16, 2024.
Scroll through some of the best deals on flights from London to Seattle in 2024. Check back regularly for other flight deals.
Mon 6/39:25 pmLHR - SEA
1 stop21h 55mIcelandair
Mon 6/1011:00 pmSEA - LHR
1 stop28h 55mIcelandair
Deal found 5/15$618
Tue 5/289:25 pmLHR - SEA
1 stop21h 55mIcelandair
Mon 6/311:00 pmSEA - LHR
1 stop13h 20mIcelandair
Deal found 5/15$619
Tue 6/49:25 pmLHR - SEA
1 stop28h 15mIcelandair
Tue 6/1111:00 pmSEA - LHR
1 stop13h 20mIcelandair
Deal found 5/15$624
Tue 6/119:25 pmLHR - SEA
1 stop28h 15mIcelandair
Mon 6/2411:00 pmSEA - LHR
1 stop28h 55mIcelandair
Deal found 5/15$626
Sun 6/169:25 pmLHR - SEA
1 stop21h 55mIcelandair
Mon 6/2411:00 pmSEA - LHR
1 stop28h 55mIcelandair
Deal found 5/15$647
Sun 6/169:25 pmLHR - SEA
1 stop21h 55mIcelandair
Mon 6/2411:00 pmSEA - LHR
1 stop28h 55mIcelandair
Deal found 5/16$648
Tue 6/259:25 pmLHR - SEA
1 stop21h 55mIcelandair
Sat 7/1311:00 pmSEA - LHR
1 stop28h 55mIcelandair
Deal found 5/15$650
Thu 6/69:25 pmLHR - SEA
1 stop21h 55mIcelandair
Mon 6/1711:00 pmSEA - LHR
1 stop13h 20mIcelandair
Deal found 5/15$652
Thu 5/309:25 pmLHR - SEA
1 stop21h 55mIcelandair
Mon 6/33:50 pmSEA - LHR
1 stop20h 30mIcelandair
Deal found 5/15$654

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 2,637,452 searches. Data last updated May 16, 2024.
Scroll through some of the best deals on flights from London to Seattle in 2024. Check back regularly for other flight deals.
Tue 10/19:25 pmLHR - SEA
1 stop28h 30mIcelandair
Tue 11/52:35 pmSEA - LHR
1 stop20h 45mIcelandair
Deal found 5/15$521
Wed 9/119:25 pmLHR - SEA
1 stop31h 10mIcelandair
Tue 9/246:55 pmSEA - LHR
1 stop17h 25mIcelandair
Deal found 5/15$523
Thu 9/59:25 pmLHR - SEA
1 stop21h 55mIcelandair
Thu 9/126:55 pmSEA - LHR
1 stop33h 00mIcelandair
Deal found 5/15$526
Thu 10/31:10 pmLHR - SEA
1 stop15h 25mIcelandair
Tue 10/83:50 pmSEA - LHR
1 stop12h 05mIcelandair
Deal found 5/15$531
Fri 9/69:25 pmLHR - SEA
1 stop21h 55mIcelandair
Mon 9/96:55 pmSEA - LHR
1 stop33h 00mIcelandair
Deal found 5/16$534
Mon 9/29:25 pmLHR - SEA
1 stop21h 55mIcelandair
Sat 9/711:00 pmSEA - LHR
1 stop13h 20mIcelandair
Deal found 5/15$535
Mon 9/169:25 pmLHR - SEA
1 stop31h 10mIcelandair
Mon 9/236:55 pmSEA - LHR
1 stop17h 25mIcelandair
Deal found 5/15$536
Mon 9/29:25 pmLHR - SEA
1 stop21h 55mIcelandair
Mon 9/166:55 pmSEA - LHR
1 stop17h 25mIcelandair
Deal found 5/15$537
Thu 9/121:10 pmLHR - SEA
1 stop15h 25mIcelandair
Sun 9/226:55 pmSEA - LHR
1 stop33h 00mIcelandair
Deal found 5/15$538

Non-stop 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 2,637,452 searches. Data last updated May 16, 2024.
Consider booking one of these non-stop flights heading from London to Seattle. Those looking to potentially save on 1 or 2-stop flights from London to Seattle should utilize the search form at the the top of the page.
Tue 10/19:50 amLHR - SEA
Nonstop9h 45mBritish Airways
Tue 11/56:45 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 5/15$594
Tue 10/229:50 amLHR - SEA
Nonstop9h 45mFinnair
Thu 10/317:45 pmSEA - LHR
Nonstop9h 20mFinnair
Deal found 5/15$595
Tue 10/84:00 pmLHR - SEA
Nonstop9h 45mBritish Airways
Tue 10/297:45 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 5/15$598
Fri 10/259:50 amLHR - SEA
Nonstop9h 45mFinnair
Tue 10/292:35 pmSEA - LHR
Nonstop9h 25mFinnair
Deal found 5/16$615
Mon 9/1612:45 pmLHR - SEA
Nonstop9h 55mVirgin Atlantic
Mon 9/234:30 pmSEA - LHR
Nonstop9h 20mVirgin Atlantic
Deal found 5/15$617
Thu 10/319:25 amLHR - SEA
Nonstop10h 00mFinnair
Mon 11/46:45 pmSEA - LHR
Nonstop9h 20mFinnair
Deal found 5/16$618
Tue 10/224:00 pmLHR - SEA
Nonstop9h 45mBritish Airways
Sat 11/22:45 pmSEA - LHR
Nonstop9h 25mBritish Airways
Deal found 5/16$620
Tue 10/19:50 amLHR - SEA
Nonstop9h 45mBritish Airways
Wed 10/97:40 pmSEA - LHR
Nonstop9h 20mBritish Airways
Deal found 5/15$625
Fri 10/44:00 pmLHR - SEA
Nonstop9h 45mFinnair
Fri 10/117:40 pmSEA - LHR
Nonstop9h 20mFinnair
Deal found 5/16$634

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 2,637,452 searches. Data last updated May 16, 2024.
Book one of these great deals on flights from London to Seattle. Users should examine the flight details to ensure there are no surprises.
Tue 5/216:50 amLHR - SEA
2 stops23h 40mUnited Airlines
Tue 5/282:22 pmSEA - LHR
1 stop13h 58mUnited Airlines
Deal found 5/14$704
Tue 5/2111:15 amLHR - SEA
1 stop17h 35mAmerican Airlines
Tue 5/2812:09 pmSEA - LHR
1 stop16h 01mAmerican Airlines
Deal found 5/14$711
Tue 5/2111:15 amLHR - SEA
1 stop17h 35mAmerican Airlines
Mon 5/271:15 amSEA - LHR
1 stop21h 10mAmerican Airlines
Deal found 5/14$735
Tue 5/2110:30 amLHR - SEA
2 stops18h 05mAmerican Airlines
Tue 5/286:00 amSEA - LHR
2 stops17h 45mAmerican Airlines
Deal found 5/14$738
Tue 5/218:10 amLHR - SEA
2 stops21h 40mAmerican Airlines
Mon 5/271:15 amSEA - LHR
1 stop21h 10mAmerican Airlines
Deal found 5/14$739
Tue 5/2111:15 amLHR - SEA
1 stop17h 35mAmerican Airlines
Tue 5/281:30 pmSEA - LHR
Nonstop9h 20mAmerican Airlines
Deal found 5/14$743
Thu 5/234:25 pmLHR - SEA
1 stop16h 32mFinnair
Mon 6/36:00 amSEA - LHR
1 stop19h 05mFinnair
Deal found 5/16$761
Fri 5/242:45 pmLHR - SEA
1 stop16h 20mFinnair
Wed 5/298:40 amSEA - LHR
1 stop16h 20mFinnair
Deal found 5/16$763
Thu 5/231:10 pmLHR - SEA
1 stop17h 58mFinnair
Mon 6/36:00 amSEA - LHR
1 stop19h 05mFinnair
Deal found 5/15$764

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 2,637,452 searches. Data last updated May 16, 2024.
Some of the best available deals we've found on one-way flights from London to Seattle. Those seeking round-trip flights from London to Seattle should utilize the search form at the the top of the page.
Mon 6/38:25 pmLHR - SEA
3 stops44h 07mMultiple Airlines
Deal found 5/16$299
Mon 6/38:25 pmLHR - SEA
2 stops32h 06mMultiple Airlines
Deal found 5/16$378
Wed 6/1210:15 pmLHR - SEA
3 stops56h 39mMultiple Airlines
Deal found 5/15$380
Mon 6/310:15 pmLHR - SEA
3 stops49h 52mMultiple Airlines
Deal found 5/15$398
Mon 6/310:15 pmLHR - SEA
2 stops44h 11mMultiple Airlines
Deal found 5/15$401
Tue 5/289:05 pmLHR - SEA
2 stops46h 15mMultiple Airlines
Deal found 5/16$409
Wed 6/196:45 amLHR - SEA
2 stops21h 36mMultiple Airlines
Deal found 5/16$412
Mon 6/179:10 pmLHR - SEA
2 stops47h 46mMultiple Airlines
Deal found 5/15$413
Wed 6/199:25 pmLHR - SEA
2 stops30h 56mMultiple Airlines
Deal found 5/16$415

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 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$521 - $681

Route

Depart

Return

Price

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 10/1

1 stop28h 30m

Seattle/Tacoma Intl

Tue 11/5

1 stop20h 45m

$521

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 10/1

Nonstop9h 45m

Seattle/Tacoma Intl

Tue 11/5

Nonstop9h 20m

$594

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 10/22

Nonstop9h 45m

Seattle/Tacoma Intl

Thu 10/31

Nonstop9h 20m

$595

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 10/31

2 stops18h 07m

Seattle/Tacoma Intl

Mon 11/4

1 stop26h 30m

$602

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Mon 9/16

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 9/23

1 stop15h 45m

$611

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sat 11/2

2 stops28h 01m

Seattle/Tacoma Intl

Sun 11/3

1 stop13h 44m

$628

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Tue 9/10

2 stops16h 00m

Seattle/Tacoma Intl

Mon 9/23

1 stop14h 50m

$637

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Thu 10/3

Nonstop9h 45m

Seattle/Tacoma Intl

Mon 10/7

1 stop14h 04m

$664

London HeathrowSeattle/Tacoma Intl

LHR - SEA

LHRSEA

London Heathrow

Sat 6/1

1 stop34h 06m

Seattle/Tacoma Intl

Mon 6/3

1 stop34h 00m

$681

Flights are sorted by cheapest first

Deals found on 5/15

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 May 10, 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

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 May 12, 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 at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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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 $389 while a round-trip flight costs $615. Price data was last updated on May 12, 2024.

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Seattle (average of $247). Flying from London Heathrow Airport to Seattle in July is currently the most expensive (average of $407). 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

$247

February

$254

March

$288

April

$294

May

$318

June

$404

July

$407

August

$344

September

$278

October

$256

November

$258

December

$248

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

41 - 66.2 °F

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 May 16, 2024.
Read through reviews of airlines operating flights from London to Seattle, such as Icelandair, British Airways and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

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
10,673 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

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
1,568 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

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
1,376 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

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
735 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

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
1,053 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.4

Entertainment

8.0

Boarding

8.2

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?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from London Heathrow. Booking flights from London Heathrow to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 21 daily inbound flights from London Heathrow from 9 different airlines.

  • Can I find flights from London Heathrow Airport to Seattle for under $600 on Cheapflights?

    Yes, there are multiple flights from London Heathrow Airport to Seattle for under $600. The cheapest flight booked recently is on Icelandair for just $521, but on average you can expect to pay $540.

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

    Cheapflights has at least 20 direct flights from London Heathrow Airport to Seattle under $600. A good price for a nonstop flight from London Heathrow Airport to Seattle is less than $640.

  • Are there last-minute flights available from London Heathrow Airport to Seattle for under $800?

    There are currently 20+ open flights from London Heathrow Airport to Seattle within the next 7 days for less than $800.

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

    Currently priced at $521, Icelandair will fly you from London Heathrow Airport to Seattle and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and Finnair - these airlines can fly you to your destination from $594 and $595, respectively. Users have found that Icelandair is 26% cheaper than the other options available to this destination.

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

    American Airlines, Finnair and British Airways are the most popular airlines when flying from London Heathrow Airport to Seattle.

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

    The top 3 most reliable airlines when flying from London Heathrow Airport to Seattle are Air France (77%), Delta (77%) and Virgin Atlantic (77%).

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

    The cheapest flight price from London Heathrow Airport to Seattle is $668. On average you can expect to pay $3,212. The most popular route, (London Heathrow - Seattle/Tacoma Intl), can usually be booked for $521.

  • What does LHR to SEA mean?

    LHR and SEA are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. LHR to SEA refers to a flight route from London Heathrow Airport to Seattle/Tacoma Intl Airport.

  • 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 5/16.

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Alternative routes for Heathrow to Seattle
See prices for flight routes from nearby airports that may be better suited for you.

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Top 9 airlines flying from Heathrow to Seattle

Discover the top 9 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 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$505Average$795FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest$532Average$819FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest$532Average$734FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Virgin AtlanticCheapest$537Average$770FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
DeltaCheapest$568Average$759FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$585Average$654FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest$611Average$751FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest$618Average$756FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Aer LingusCheapest$670Average$831FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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.
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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 May 16, 2024.
1%of flight departuresEarly morningMidnight to 6 am
43%of flight departuresMorning6 am to noon
56%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 May 16, 2024.
Sunday20daily flights
Monday20daily flights
Tuesday24daily flights
Wednesday20daily flights
Thursday20daily flights
Friday20daily flights
Saturday25daily flights

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

Cheapflights helps you search for flights from Heathrow to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Seattle, users can toggle the no change fees filter when performing a flight search.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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