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Cheap flights from London to Seattle from C$ 607

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/8. 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
23 abr. — 30 abr.1
1 adult
mar. 23/4
mar. 30/4

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 18 abril 2024.

Popular in

November

Cheapest in

June

Average price

C$ 787

Round-trip from

C$ 415
High demand for flights, 41% potential price rise
Best time to find cheap flights, 38% potential price drop
Average for round-trip flights in April 2024
From London to Seattle/Tacoma Intl

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

Flights from London, Ontario 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.

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

The best pricing can be found in the month of June. Prices to Seattle from London, Ontario average C$ 779. You can even find prices in June for less than C$ 779, as users have found deals to Seattle from as low as C$ 473. The month of November appears to be one of the more expensive times to travel to Seattle from London, Ontario. Flying in the targeted month can save you up to 68%.

When is the cheapest time to fly from London, Ontario to Seattle (YXU - SEA)?

One of the essential ways to save on airfare from London, Ontario to Seattle is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 22% on airfare.

Cheap Air Canada flights from London to Seattle

Explore cheap flight options specifically provided by Air Canada for the route between London 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 505,255 searches. Data last updated 18 abril 2024.
Take a peek at the cheapest Air Canada flights we've detected travelling from London to Seattle. Make sure to double check the flight details before booking.
mar. 20/86:00 a.m.YXU - SEA
2 stops11h 34mAir Canada
mié. 21/87:05 p.m.SEA - YXU
2 stops11h 10mAir Canada
Deal found 16/4C$ 1,031
sáb. 12/106:00 a.m.YXU - SEA
2 stops11h 30mAir Canada
sáb. 19/107:05 p.m.SEA - YXU
2 stops11h 12mAir Canada
Deal found 17/4C$ 1,045

Cheap WestJet flights from London to Seattle

Explore cheap flight options specifically provided by WestJet for the route between London 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 505,255 searches. Data last updated 18 abril 2024.
Take a gander at the lowest prices we've found on WestJet flights from London to Seattle. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
dom. 4/86:15 a.m.YXU - SEA
1 stop15h 19mWestJet
lun. 12/87:00 a.m.SEA - YXU
1 stop8h 59mWestJet
Deal found 17/4C$ 607
mar. 20/86:15 a.m.YXU - SEA
1 stop15h 19mWestJet
mié. 21/86:15 p.m.SEA - YXU
1 stop8h 03mWestJet
Deal found 16/4C$ 618
mar. 20/86:15 a.m.YXU - SEA
1 stop15h 19mWestJet
mié. 21/81:00 p.m.SEA - YXU
2 stops13h 18mWestJet
Deal found 16/4C$ 654
mar. 20/86:15 a.m.YXU - SEA
1 stop17h 06mWestJet
mié. 21/81:00 p.m.SEA - YXU
2 stops26h 59mWestJet
Deal found 17/4C$ 656
dom. 4/88:00 p.m.YXU - SEA
2 stops21h 46mWestJet
lun. 12/87:00 a.m.SEA - YXU
1 stop8h 59mWestJet
Deal found 17/4C$ 715
sáb. 12/108:00 p.m.YXU - SEA
1 stop19h 56mWestJet
sáb. 19/107:00 a.m.SEA - YXU
1 stop9h 11mWestJet
Deal found 17/4C$ 755
dom. 4/86:15 a.m.YXU - SEA
2 stops11h 31mWestJet
lun. 12/83:30 p.m.SEA - YXU
2 stops10h 48mWestJet
Deal found 17/4C$ 858
sáb. 12/108:00 p.m.YXU - SEA
1 stop27h 26mWestJet
sáb. 19/109:59 p.m.SEA - YXU
2 stops18h 12mWestJet
Deal found 17/4C$ 919

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 505,255 searches. Data last updated 18 abril 2024.
Listed are some of the best fares we've found on flights departing from London to Seattle in 2024. More deals are always being added, so be sure to check back regularly.
dom. 4/86:15 a.m.YXU - SEA
1 stop15h 19mWestJet
lun. 12/87:00 a.m.SEA - YXU
1 stop8h 59mWestJet
Deal found 17/4C$ 607
mar. 20/86:15 a.m.YXU - SEA
1 stop15h 19mWestJet
mié. 21/86:15 p.m.SEA - YXU
1 stop8h 03mWestJet
Deal found 16/4C$ 618
mar. 20/86:15 a.m.YXU - SEA
1 stop15h 19mWestJet
mié. 21/81:00 p.m.SEA - YXU
2 stops13h 18mWestJet
Deal found 16/4C$ 654
mar. 20/86:15 a.m.YXU - SEA
1 stop17h 06mWestJet
mié. 21/81:00 p.m.SEA - YXU
2 stops26h 59mWestJet
Deal found 17/4C$ 656
dom. 4/88:00 p.m.YXU - SEA
2 stops21h 46mWestJet
lun. 12/87:00 a.m.SEA - YXU
1 stop8h 59mWestJet
Deal found 17/4C$ 715
sáb. 12/108:00 p.m.YXU - SEA
1 stop19h 56mWestJet
sáb. 19/107:00 a.m.SEA - YXU
1 stop9h 11mWestJet
Deal found 17/4C$ 755
dom. 4/86:15 a.m.YXU - SEA
2 stops11h 31mWestJet
lun. 12/83:30 p.m.SEA - YXU
2 stops10h 48mWestJet
Deal found 17/4C$ 858
sáb. 12/108:00 p.m.YXU - SEA
1 stop27h 26mWestJet
sáb. 19/109:59 p.m.SEA - YXU
2 stops18h 12mWestJet
Deal found 17/4C$ 919
mar. 20/86:00 a.m.YXU - SEA
2 stops12h 28mUnited Airlines
mié. 21/810:50 p.m.SEA - YXU
2 stops12h 55mUnited Airlines
Deal found 17/4C$ 1,007

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 505,255 searches. Data last updated 18 abril 2024.

Fly from

Any airport

Fly to

Any airport

Budget

C$ 607 - C$ 1,045

Route

Depart

Return

Price

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

dom. 4/8

1 stop15h 19m

Seattle/Tacoma Intl

lun. 12/8

1 stop8h 59m

C$ 607

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

mar. 20/8

1 stop15h 19m

Seattle/Tacoma Intl

mié. 21/8

1 stop8h 03m

C$ 618

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

mar. 20/8

1 stop15h 19m

Seattle/Tacoma Intl

mié. 21/8

2 stops13h 18m

C$ 654

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

mar. 20/8

1 stop17h 06m

Seattle/Tacoma Intl

mié. 21/8

2 stops26h 59m

C$ 656

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

dom. 4/8

2 stops21h 46m

Seattle/Tacoma Intl

lun. 12/8

1 stop8h 59m

C$ 715

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

sáb. 12/10

1 stop19h 56m

Seattle/Tacoma Intl

sáb. 19/10

1 stop9h 11m

C$ 755

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

mar. 20/8

2 stops12h 28m

Seattle/Tacoma Intl

mié. 21/8

2 stops12h 55m

C$ 1,007

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

mar. 20/8

2 stops11h 34m

Seattle/Tacoma Intl

mié. 21/8

2 stops11h 10m

C$ 1,031

LondonSeattle/Tacoma Intl

YXU - SEA

YXUSEA

London

sáb. 12/10

2 stops11h 30m

Seattle/Tacoma Intl

sáb. 19/10

2 stops11h 12m

C$ 1,045

Flights are sorted by cheapest first

Deals found on 17/4

When is the cheapest time 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 14 April 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their London, Ontario to Seattle flight should consider departing on Saturday mornings when fares are most often at their lowest. Tuesday 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 London to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from London to Seattle is currently C$ 0 while a round-trip flight costs C$ 788. Price data was last updated on 14 April 2024.

Currently, October is the cheapest month in which you can book a flight from London, Ontario to Seattle (average of C$ 301). Flying from London, Ontario to Seattle in August is currently the most expensive (average of C$ 432). 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$ 455

February

C$ 465

March

C$ 584

April

C$ 573

May

C$ 433

June

C$ 473

July

C$ 575

August

C$ 596

September

C$ 559

October

C$ 415

November

C$ 436

December

C$ 490

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 18 abril 2024.
See what other customers who have flown with Air Canada, WestJet and United Airlines from London to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
7.5
Good
3,010 reviews

Food

6.5

Crew

8.2

Boarding

7.7

Comfort

7.3

Entertainment

6.5

Overall

7.5

Reviews

1 / 10

Flights good. Our original flight from Halifax to Toronto was delayed 4 days Unacceptable We flew with Air Canada a picked up original flight in Toronto Cost extra $500 Maybe Westjet could give us a voucher or pay for this inconvenience. Thank You. Garry Barkman

7.5
Good
3,010 reviews
7.5
Good
3,010 reviews

Food

6.5

Crew

8.2

Boarding

7.7

Comfort

7.3

Entertainment

6.5

Overall

7.5

Reviews

1 / 10

Flights good. Our original flight from Halifax to Toronto was delayed 4 days Unacceptable We flew with Air Canada a picked up original flight in Toronto Cost extra $500 Maybe Westjet could give us a voucher or pay for this inconvenience. Thank You. Garry Barkman

7.4
Good
11,341 reviews
7.5
Good
3,010 reviews

Food

6.5

Crew

8.2

Boarding

7.7

Comfort

7.3

Entertainment

6.5

Overall

7.5

Reviews

1 / 10

Flights good. Our original flight from Halifax to Toronto was delayed 4 days Unacceptable We flew with Air Canada a picked up original flight in Toronto Cost extra $500 Maybe Westjet could give us a voucher or pay for this inconvenience. Thank You. Garry Barkman

7.0
Good
6,836 reviews
7.5
Good
3,010 reviews

Food

6.5

Crew

8.2

Boarding

7.7

Comfort

7.3

Entertainment

6.5

Overall

7.5

Reviews

1 / 10

Flights good. Our original flight from Halifax to Toronto was delayed 4 days Unacceptable We flew with Air Canada a picked up original flight in Toronto Cost extra $500 Maybe Westjet could give us a voucher or pay for this inconvenience. Thank You. Garry Barkman

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 C$ 700 on Cheapflights?

    Yes, there are multiple flights from London, Ontario to Seattle for under C$ 700. The cheapest flight booked recently is on WestJet for just C$ 607, but on average you can expect to pay C$ 933.

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

    According to our current data, WestJet (C$ 607), United Airlines (C$ 1,007), and Air Canada (C$ 1,031) offers the cheapest pricing from London, Ontario to Seattle. WestJet is 22% cheaper than the average price of flights available within the next 90 days to this destination.

  • What does YXU to SEA mean?

    YXU 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. YXU to SEA refers to a flight route from London Airport to Seattle/Tacoma Intl Airport.

  • 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 17/4.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from London to Seattle

Discover the top 2 airlines that operate flights from London 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 505,255 searches. Data last updated 18 abril 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 488AverageC$ 633FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 566AverageC$ 656FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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.

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 London to Seattle?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from London today with Cheapflights!

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

Cheapflights helps you find that perfect flight to Seattle from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Certainly. Search results for flights to Seattle from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on London to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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