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Cheap flights from Canada to Seattle from C$ 165

YYZ — SEA
6 Oct — 13 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Canada to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Canada to Seattle

Wed 23/91:40 p.m. -
1 stop5h 05m
Mon 28/97:35 p.m. -
1 stop4h 40m
Deal found 4/9C$ 284
Tue 29/911:45 a.m. -
1 stop7h 00m
Tue 6/107:35 p.m. -
1 stop4h 40m
Deal found 1/9C$ 285
Mon 5/108:05 a.m. -
Nonstop1h 07m
Thu 15/107:55 p.m. -
Nonstop0h 58m
Deal found 4/9C$ 286
Thu 1/109:40 p.m. -
Nonstop1h 07m
Sun 4/105:50 a.m. -
Nonstop1h 10m
Deal found 3/9C$ 288
Wed 23/912:45 p.m. -
1 stop6h 00m
Fri 25/97:35 p.m. -
1 stop4h 40m
Deal found 1/9C$ 289
Thu 1/1011:45 a.m. -
1 stop7h 00m
Sun 4/1010:30 a.m. -
1 stop5h 25m
Deal found 3/9C$ 291
Fri 2/1012:45 p.m. -
1 stop6h 00m
Fri 9/1010:30 a.m. -
1 stop5h 25m
Deal found 4/9C$ 292
Wed 30/912:45 p.m. -
1 stop6h 00m
Wed 7/1010:30 a.m. -
1 stop5h 25m
Deal found 2/9C$ 293
Sat 3/109:40 p.m. -
Nonstop1h 07m
Sun 4/105:50 a.m. -
Nonstop1h 10m
Deal found 1/9C$ 296
Sat 17/105:00 a.m. -
1 stop4h 40m
Sun 18/1010:30 a.m. -
1 stop5h 25m
Deal found 2/9C$ 299
Thu 8/105:25 p.m. -
Nonstop1h 07m
Tue 13/1010:50 a.m. -
Nonstop1h 10m
Deal found 3/9C$ 300
Sat 3/108:45 a.m. -
Nonstop1h 55m
Tue 6/107:35 p.m. -
Nonstop1h 40m
Deal found 4/9C$ 313

Find flight deals from Canada to Seattle

Round-trip from

C$ 284

One-way from

C$ 165

Popular in

June

Cheapest in

February

Average price

C$ 562

Good round-trip deal

C$ 299 or less

Good one-way deal

C$ 374 or less
WestJet
  • WestJet
  • 23/9-28/9
  • 2 total stops
  • 9h 45m total
  • Canada to Seattle
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Air Canada
  • Air Canada
  • 22/9-31/12
  • Nonstop
  • 1h 07m total
  • Canada to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 100 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals
Price to beat on a round-trip flight from Canada to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Canada to Seattle/Tacoma Intl.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Canada to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KelownaSeattle

YLW Kelowna - SEA Seattle/Tacoma Intl

YLWSEA

Kelowna

Sun 4/10

5:05 a.m.-9:40 a.m.

1 stop4h 35m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 176

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Sun 1/11

7:25 a.m.-7:35 a.m.

Nonstop1h 10m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 190
Quickest round-trip

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Sat 5/12

2:35 p.m.-1:39 p.m.

Nonstop0h 04m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 190

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Tue 3/11

2:35 p.m.-1:44 p.m.

Nonstop0h 09m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 190

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Sat 7/11

7:00 a.m.-6:07 a.m.

Nonstop0h 07m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 190

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Sat 31/10

8:00 a.m.-9:07 a.m.

Nonstop1h 07m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 190

EdmontonSeattle

YEG Edmonton - SEA Seattle/Tacoma Intl

YEGSEA

Edmonton

Fri 11/9

3:00 p.m.-6:45 p.m.

1 stop4h 45m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 191

KelownaSeattle

YLW Kelowna - SEA Seattle/Tacoma Intl

YLWSEA

Kelowna

Fri 11/9

5:05 a.m.-9:40 a.m.

1 stop4h 35m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 195

CalgarySeattle

YYC Calgary - SEA Seattle/Tacoma Intl

YYCSEA

Calgary

Tue 15/9

2:05 p.m.-6:32 p.m.

1 stop5h 27m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 196

CalgarySeattle

YYC Calgary - SEA Seattle/Tacoma Intl

YYCSEA

Calgary

Wed 7/10

7:05 p.m.-10:47 p.m.

1 stop4h 42m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 201

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Canada to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Canada with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

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

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

Currently, February is the cheapest month in which you can book a flight from Canada to Seattle (average of C$ 354). Flying from Canada to Seattle in June is currently the most expensive (average of C$ 616). 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 CA to SEA?

When flying from Canada to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 45% versus a flight at noon.

How often are flights from Canada to Seattle delayed?

About 18% of weekly flights between Canada and Seattle have experienced delays in the past year, with the average delay time being 126 minutes.

What is the most punctual flight time for Canada to Seattle flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Canada to Seattle flights?

Over the past year, Alaska Airlines has had the lowest number of delays on this route, with just 14% of flights being delayed.

How far ahead should I book a flight from Canada to Seattle?

Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from Canada to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest day to fly from Canada to Seattle?

Travelers seeking maximum savings on their Canada to Seattle flight should consider departing on Monday at noon when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Seattle

Check out reviews from past customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Canada to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,882 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Alaska Airlines
7.9
Good
12,882 reviews
Alaska Airlines
7.9
Good
12,882 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Delta
7.8
Good
8,559 reviews
Alaska Airlines
7.9
Good
12,882 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
United Airlines
7.4
Good
10,173 reviews
Alaska Airlines
7.9
Good
12,882 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
WestJet
7.2
Good
3,446 reviews
Alaska Airlines
7.9
Good
12,882 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Air Canada
7.1
Good
11,592 reviews
Alaska Airlines
7.9
Good
12,882 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Related info for your journey

  • What airport do you fly into for flights to Seattle from Canada?

    If you book a flight to Seattle from Canada, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 18.4 km from the centre of Seattle.

  • How long is the flight from Canada to Seattle?

    Airlines like Alaska Airlines, WestJet, and United Airlines fly from Canada to Seattle in about 16m. The time it takes to get you to your destination can typically vary by up to 20h 28m. Airlines will cover a distance of 352 km. Both multi-stop and direct flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at C$ 86. Alaska Airlines flights start at C$ 103 while deals on United Airlines start at C$ 125 one-way.

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

    Most travellers choose Toronto Pearson Intl - Seattle/Tacoma Intl, Vancouver Intl - Seattle/Tacoma Intl or Calgary - Seattle/Tacoma Intl when deciding on the best route from Canada to Seattle.

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

    Before booking your flight to Seattle from Canada, check out the most reliable airlines to get you to your destination on time: Alaska Airlines (85%), Brussels Airlines (35%), Air Canada( 35%).

  • What are the cheapest flights from Canada to Seattle?

    Looking at all options, your cheapest flight can be booked for C$ 303. While the most popular route (Toronto Pearson Intl - Seattle/Tacoma Intl) can be booked for C$ 502 on average, our data indicates C$ 673 when flying from Canada to Seattle.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Canada 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.

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

    Currently, February is the cheapest month in which you can book a flight from Canada to Seattle (average of C$ 354). Flying from Canada to Seattle in June is currently the most expensive (average of C$ 616). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Kent
Mukilteo
Leavenworth
Tacoma
Renton
Cashmere
Lynnwood
Ellensburg
Tukwila
Olympia
Marysville
Federal Way
Kirkland

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from Canada to Seattle

AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 123AverageC$ 522FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Harbour Air SeaplanesCheapestC$ 149AverageC$ 300FlexibilityNo cancel feeOn-timeN/A
Search Harbour Air Seaplanes flights
WestJetCheapestC$ 157AverageC$ 475FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 188AverageC$ 441FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapestC$ 221AverageC$ 662FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 252AverageC$ 703FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 420AverageC$ 624FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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

When you search for this flight from Canada to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Canada to Seattle.

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

Certainly. Search results for flights to Seattle from Canada 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 Canada to Seattle become cheaper?

Of course! You can now track prices for flights from Canada to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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