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$58+ Cheap flights from Seattle (SEA) to Canada

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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
Oct 25 — Nov 11
Sat 10/25
Sat 11/1
1 adult, Economy
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Cheap flight deals from Seattle to Canada

Keep the following information in mind while searching for Seattle to Canada flight deals. Data was last updated September 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$145
(Trip.com)

One-way from

$58
(Booking.com)

Popular in

June

Cheapest in

January

Average price

$412

Good round-trip deal

$155 or less

Good one-way deal

$83 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Toronto (YTO) flights.
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From Seattle/Tacoma Intl to Canada
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One-way flight from Seattle/Tacoma Intl to Canada
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Highest demand for flights based on searches. 15% potential increase in price ($70 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Canada.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Canada.
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Find flight deals from Seattle to Canada

Cheapest flights from Seattle to Canada
Explore the most affordable flight options available from Seattle to Canada. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/228:40 amSEA - YYC
Nonstop1h 50mWestJet
Sat 10/2512:05 pmYYC - SEA
Nonstop1h 54mWestJet
Deal found 9/23$142
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:05 amSEA - YYC
Nonstop1h 40mWestJet
Sat 10/2512:05 pmYYC - SEA
Nonstop1h 54mWestJet
Deal found 9/23$143
This Trip.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/168:40 amSEA - YYC
Nonstop1h 50mWestJet
Mon 10/207:35 pmYYC - SEA
Nonstop1h 54mWestJet
Deal found 9/23$144
This Trip.com deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/167:15 pmSEA - YYC
1 stop4h 27mMultiple Airlines
Mon 10/207:35 pmYYC - SEA
Nonstop1h 54mMultiple Airlines
Deal found 9/24$145
This Kiwi.com deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/221:50 pmSEA - YYC
Nonstop1h 41mWestJet
Wed 10/291:25 pmYYC - SEA
Nonstop1h 55mWestJet
Deal found 9/24$146
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/251:50 pmSEA - YYC
Nonstop1h 41mWestJet
Tue 10/281:25 pmYYC - SEA
Nonstop1h 55mWestJet
Deal found 9/23$150
This Kiwi.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:05 amSEA - YYC
Nonstop1h 40mWestJet
Tue 10/281:25 pmYYC - SEA
Nonstop1h 55mWestJet
Deal found 9/23$151
This Kiwi.com deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/241:50 pmSEA - YYC
Nonstop1h 41mWestJet
Tue 10/281:25 pmYYC - SEA
Nonstop1h 55mWestJet
Deal found 9/24$152
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/258:40 amSEA - YVR
2 stops10h 31mWestJet
Sat 11/17:00 amYVR - SEA
1 stop3h 25mWestJet
Deal found 9/25$152
This Kiwi.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/248:40 amSEA - YYC
Nonstop1h 50mWestJet
Fri 10/246:10 pmYYC - SEA
Nonstop2h 11mWestJet
Deal found 9/25$154
This Kiwi.com deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/161:50 pmSEA - YYC
Nonstop1h 41mWestJet
Sat 10/186:10 pmYYC - SEA
Nonstop2h 11mWestJet
Deal found 9/24$156
This Jettzy deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/225:30 amSEA - YYC
1 stop6h 02mAir Canada
Thu 10/236:10 amYYC - SEA
1 stop4h 11mAir Canada
Deal found 9/23$157

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Canada 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 2,558,603 searches. Data last updated September 25, 2025.
Use the filters below to find and compare flights from Seattle to Canada that are best for you.

Fly from

Seattle

Fly to

Canada

Route

Depart

Return

Price

SeattleCalgary

SEA - YYC

SEAYYC

Seattle/Tacoma Intl

Thu 10/23

1:50 pm-4:31 pm

Nonstop1h 41m

Calgary

Thu 10/30

1:25 pm-2:20 pm

Nonstop1h 55m

$146

SeattleCalgary

SEA - YYC

SEAYYC

Seattle/Tacoma Intl

Mon 11/17

11:55 am-5:15 pm

1 stop4h 20m

Calgary

Wed 11/19

1:25 pm-2:20 pm

Nonstop1h 55m

$161

SeattleVancouver

SEA - YVR

SEAYVR

Seattle/Tacoma Intl

Sun 11/9

11:55 am-4:13 pm

1 stop4h 18m

Vancouver Intl

Sun 11/16

7:00 am-10:23 am

1 stop3h 23m

$162

SeattleCalgary

SEA - YYC

SEAYYC

Seattle/Tacoma Intl

Thu 10/30

3:10 pm-5:50 pm

Nonstop1h 40m

Calgary

Sun 11/2

1:25 pm-2:20 pm

Nonstop1h 55m

$172

SeattleVancouver

SEA - YVR

SEAYVR

Seattle/Tacoma Intl

Sat 3/7

11:55 am-4:09 pm

1 stop4h 14m

Vancouver Intl

Mon 3/9

7:00 am-10:21 am

1 stop3h 21m

$176

SeattleVancouver

SEA - YVR

SEAYVR

Seattle/Tacoma Intl

Sat 1/17

11:55 am-4:13 pm

1 stop4h 18m

Vancouver Intl

Mon 1/19

7:00 am-10:23 am

1 stop3h 23m

$176

SeattleCalgary

SEA - YYC

SEAYYC

Seattle/Tacoma Intl

Sun 11/9

11:55 am-7:18 pm

2 stops6h 23m

Calgary

Sun 11/16

4:30 pm-10:06 pm

1 stop6h 36m

$178

SeattleVancouver

SEA - YVR

SEAYVR

Seattle/Tacoma Intl

Sat 11/8

3:40 pm-4:47 pm

Nonstop1h 07m

Vancouver Intl

Sat 11/15

7:00 am-10:23 am

1 stop3h 23m

$178

SeattleCalgary

SEA - YYC

SEAYYC

Seattle/Tacoma Intl

Thu 10/16

1:50 pm-4:31 pm

Nonstop1h 41m

Calgary

Thu 10/23

12:05 pm-12:59 pm

Nonstop1h 54m

$179

SeattleVancouver

SEA - YVR

SEAYVR

Seattle/Tacoma Intl

Sat 10/18

10:00 am-11:10 am

Nonstop1h 10m

Vancouver Intl

Sun 10/19

8:15 am-9:21 am

Nonstop1h 06m

$180

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/25

Showing 1-10 of 60 results
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Best time to book a flight from Seattle to Canada

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

Cheapflights Insights

Everything you need to know about your flight from Seattle to Canada

What is the cheapest month to book a flight from Seattle to Canada?

Currently, January is the cheapest month in which you can book a flight from Seattle to Canada (average of $243). Flying from Seattle to Canada in August is currently the most expensive (average of $348). 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.

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

Find hourly flight availability from Seattle to Canada. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 25, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Canada as you normally would.

Weekly flight availability from Seattle to Canada

Explore weekly flight availability from Seattle to Canada. 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 September 25, 2025.

The most flights from SEA to CA0 are scheduled on a Monday (7 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (4 on average).

Reviews of airlines servicing Canada

Get insights into the airlines that provide service to Canada. 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 Canada. Reviews last updated September 25, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from Seattle to Canada. 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
WestJet
7.2
Good
3,107 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Air Canada
7.1
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Canada. 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 from for flights from Seattle to Canada?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Canada from Seattle.

  • How long is the flight from Seattle to Canada?

    A quick flight from Seattle to Canada can take about 52m. WestJet provides one of the quickest options available for as low as $197. The distance from Seattle to Canada is about 98 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines to fly from Seattle to Canada one-way?

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $59. United Airlines flights start at $73 while deals on Alaska Airlines start at $79 one-way.

  • What are the most popular routes from Seattle to Canada?

    When deciding which route to take from Seattle to Canada consider Seattle/Tacoma Intl - Toronto Pearson Intl, Seattle/Tacoma Intl - Vancouver Intl or Seattle/Tacoma Intl - Calgary as they are the most popular.

  • What are the most reliable airlines from Seattle to Canada?

    Consider Qatar Airways (96%), Alaska Airlines (92%) or Hawaiian Airlines (92%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Canada.

  • What are the cheapest flights from Seattle to Canada?

    Looking at all options, your cheapest flight can be booked for $100. While the most popular route (Seattle/Tacoma Intl - Toronto Pearson Intl) can be booked for $199 on average, our data indicates $884 when flying from Seattle to Canada.

  • Can I find deals for flights from Seattle to Canada that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Canada by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Canada?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Canada (average of $243). Flying from Seattle to Canada in August is currently the most expensive (average of $348). 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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Alternative routes for Seattle to Canada

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Top 7 airlines flying from Seattle to Canada

Discover the top 7 airlines that operate flights from Seattle to Canada. 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 2,558,603 searches. Data last updated September 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$79Average$412FlexibilityNo cancel feeOn-time67%
DeltaCheapest$95Average$403FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$120Average$480FlexibilityNo cancel feeOn-time69%
WestJetCheapest$139Average$362FlexibilityNo cancel feeOn-time60%
Harbour Air SeaplanesCheapest$204Average$290FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$219Average$384FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$465Average$668FlexibilityNo cancel feeOn-time71%

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