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Cheap flights from London (YXU) to Seattle (SEA) from $285

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 6/29. 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.
YXU — SEA
Jun 16 — Jun 231
From?
To?
Sun 6/16
Sun 6/23
1 adult, Economy
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Cheap flight deals from London to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) 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 June 11, 2024.

Popular in

April

Cheapest in

June

Average price

$351

Round-trip from

$247
High demand for flights, 35% potential price rise
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Best time to find cheap flights, 35% potential price drop
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Average for round-trip flights in June 2024
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From London to Seattle/Tacoma Intl
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What is the cheapest day to fly round-trip from London, Ontario to Seattle?

Flights from London, Ontario to Seattle are found to be more expensive on Saturday. 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.

What is the cheapest month to fly from London, Ontario to Seattle?

Flights from London, Ontario to Seattle lean towards being more expensive in April. Prices are generally better when you fly from London, Ontario to Seattle in June, with the cheapest ticket starting at $343.

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

When flying from London, Ontario to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap London to Seattle flights in June & July 2024

Find cheap flight options from London 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 3,117,830 searches. Prices were last updated on June 11, 2024.
The lowest fares we've come across on flights traveling from London to Seattle in June and July 2024. Check back soon for alternative fares.
Tue 7/168:00 pmYXU - SEA
1 stop27h 22mWestJet
Tue 7/237:00 amSEA - YXU
1 stop8h 59mWestJet
Deal found 6/11$313
Tue 7/166:00 amYXU - SEA
2 stops11h 34mAir Canada
Tue 7/2311:10 pmSEA - YXU
1 stop7h 05mAir Canada
Deal found 6/11$326
Tue 7/166:00 amYXU - SEA
2 stops11h 34mAir Canada
Tue 7/2311:10 pmSEA - YXU
1 stop7h 05mAir Canada
Deal found 6/10$342
Tue 7/166:00 amYXU - SEA
2 stops11h 34mAir Canada
Tue 7/237:05 pmSEA - YXU
2 stops11h 10mAir Canada
Deal found 6/10$347
Tue 7/166:15 amYXU - SEA
1 stop14h 07mWestJet
Tue 7/237:00 amSEA - YXU
1 stop8h 59mWestJet
Deal found 6/10$352
Tue 7/166:00 amYXU - SEA
2 stops11h 34mAir Canada
Tue 7/237:40 amSEA - YXU
2 stops22h 35mAir Canada
Deal found 6/11$387
Fri 7/196:15 amYXU - SEA
1 stop17h 07mWestJet
Sat 7/276:15 pmSEA - YXU
1 stop8h 03mWestJet
Deal found 6/11$405
Fri 7/196:15 amYXU - SEA
2 stops13h 09mDelta
Sat 7/277:00 amSEA - YXU
1 stop8h 59mDelta
Deal found 6/11$458
Fri 7/196:15 amYXU - SEA
1 stop17h 07mWestJet
Sat 7/276:15 pmSEA - YXU
1 stop8h 03mWestJet
Deal found 6/10$465

London to Seattle 2024 flight deals

Discover exclusive flight deals for travel between London and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 11, 2024.
The lowest fares we've come across on flights traveling from London to Seattle in June and July 2024. Check back soon for alternative fares.
Tue 8/276:15 amYXU - SEA
1 stop9h 41mWestJet
Sat 8/316:15 pmSEA - YXU
1 stop8h 03mWestJet
Deal found 6/11$291
Tue 7/168:00 pmYXU - SEA
1 stop27h 22mWestJet
Tue 7/237:00 amSEA - YXU
1 stop8h 59mWestJet
Deal found 6/11$313
Tue 7/166:00 amYXU - SEA
2 stops11h 34mAir Canada
Tue 7/2311:10 pmSEA - YXU
1 stop7h 05mAir Canada
Deal found 6/11$326
Tue 7/166:00 amYXU - SEA
2 stops11h 34mAir Canada
Tue 7/2311:10 pmSEA - YXU
1 stop7h 05mAir Canada
Deal found 6/10$342
Tue 7/166:00 amYXU - SEA
2 stops11h 34mAir Canada
Tue 7/237:05 pmSEA - YXU
2 stops11h 10mAir Canada
Deal found 6/10$347
Tue 7/166:15 amYXU - SEA
1 stop14h 07mWestJet
Tue 7/237:00 amSEA - YXU
1 stop8h 59mWestJet
Deal found 6/10$352
Tue 7/166:00 amYXU - SEA
2 stops11h 34mAir Canada
Tue 7/237:40 amSEA - YXU
2 stops22h 35mAir Canada
Deal found 6/11$387
Fri 7/196:15 amYXU - SEA
1 stop17h 07mWestJet
Sat 7/276:15 pmSEA - YXU
1 stop8h 03mWestJet
Deal found 6/11$405
Tue 8/273:20 pmYXU - SEA
2 stops13h 03mMultiple Airlines
Sat 8/317:40 amSEA - YXU
2 stops22h 35mMultiple Airlines
Deal found 6/11$411

One-way flights to Seattle from London

Search for one-way flight options from London 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 3,117,830 searches. Data last updated June 11, 2024.
Take a look at some of the one-way flights we've detected from London to Seattle. Users needing a return flight from London to Seattle should utilize the search form above.
Sat 6/296:15 amYXU - SEA
2 stops35h 31mMultiple Airlines
Deal found 6/11$285
Tue 6/256:15 amYXU - SEA
1 stop9h 41mWestJet
Deal found 6/10$286
Sat 6/296:15 amYXU - SEA
1 stop17h 06mMultiple Airlines
Deal found 6/11$334
Sat 6/298:00 pmYXU - SEA
3 stops21h 46mWestJet
Deal found 6/11$348
Tue 6/256:00 amYXU - SEA
2 stops11h 34mAir Canada
Deal found 6/10$381

Find flights from London to Seattle within your budget

Customize your flight search to find flights from London 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 3,117,830 searches. Data last updated June 11, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$291 - $458

Route

Depart

Return

Price

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

Tue 8/27

1 stop9h 41m

Seattle/Tacoma Intl

Sat 8/31

1 stop8h 03m

$291

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

Tue 7/16

1 stop27h 22m

Seattle/Tacoma Intl

Tue 7/23

1 stop8h 59m

$313

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

Tue 7/16

2 stops11h 34m

Seattle/Tacoma Intl

Tue 7/23

1 stop7h 05m

$326

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

Tue 7/16

2 stops11h 34m

Seattle/Tacoma Intl

Tue 7/23

1 stop7h 05m

$342

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

Tue 7/16

2 stops11h 34m

Seattle/Tacoma Intl

Tue 7/23

2 stops11h 10m

$347

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

Tue 7/16

1 stop14h 07m

Seattle/Tacoma Intl

Tue 7/23

1 stop8h 59m

$352

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

Tue 7/16

2 stops11h 34m

Seattle/Tacoma Intl

Tue 7/23

2 stops22h 35m

$387

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

Tue 8/27

2 stops13h 03m

Seattle/Tacoma Intl

Sat 8/31

2 stops22h 35m

$411

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

Fri 7/19

2 stops13h 09m

Seattle/Tacoma Intl

Sat 7/27

1 stop8h 59m

$458

Flights are sorted by cheapest first

Deals found on 6/11

What is the cheapest day to fly from London, Ontario to Seattle?

Use this chart to determine the cheapest time to fly round-trip from London to Seattle. Price data was last updated on June 9, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their London, Ontario to Seattle flight should consider departing on Sunday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Best time to book a flight from London to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from London 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

41 - 66.2 °F

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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 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 June 11, 2024.
See what other customers who have flown with WestJet, Air Canada and Delta from London to Seattle have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,277 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Entertainment

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very good
10,277 reviews
Delta
8.0
Very good
10,277 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Entertainment

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

WestJet
7.5
Good
2,842 reviews
Delta
8.0
Very good
10,277 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Entertainment

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Air Canada
7.0
Good
7,079 reviews
Delta
8.0
Very good
10,277 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Entertainment

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from London to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from London, Ontario to Seattle for under $300 on Cheapflights?

    Yes, there are multiple flights from London, Ontario to Seattle for under $300. The cheapest flight booked recently is on WestJet for just $291, but on average you can expect to pay $430.

  • What are the cheapest airlines flying from London, Ontario to Seattle round-trip?

    Currently priced at $291, WestJet will fly you from London, Ontario to Seattle and back. In addition to WestJet, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and Delta - these airlines can fly you to your destination from $326 and $458, respectively. WestJet is 46% cheaper than the average price of flights available within the next 90 days to this destination.

  • What does YXU to SEA mean?

    London Airport is YXU 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 London to Seattle that include extra baggage allowance?

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

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

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

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

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

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

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

    Many airlines flying from London 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 London to Seattle?

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

    The London, Ontario to Seattle flight deals you see on this page were last updated on 6/11.

  • What is the cheapest month to book a flight from London, Ontario to Seattle?

    Currently, January is the cheapest month in which you can book a flight from London, Ontario to Seattle (average of $247). Flying from London, Ontario 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.

See more FAQs

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Search flights from London to Seattle by cabin class

Find flights from London to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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