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Cheap flights from Canada to Seattle from C$ 71

YYZ — SEA
5 Dec — 12 Dec1
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

Fri 18/129:05 a.m. -
Nonstop1h 25m
Sun 20/122:30 p.m. -
2 stops7h 00m
Deal found 1/11C$ 321
Fri 18/122:30 p.m. -
Nonstop1h 16m
Fri 25/129:28 p.m. -
Nonstop1h 20m
Deal found 3/11C$ 325
Sat 5/126:00 a.m. -
1 stop5h 04m
Tue 8/122:30 p.m. -
1 stop6h 40m
Deal found 4/11C$ 327
Sun 20/126:00 a.m. -
1 stop5h 09m
Fri 1/111:00 a.m. -
1 stop5h 45m
Deal found 2/11C$ 330
Fri 18/129:05 a.m. -
Nonstop1h 25m
Fri 25/122:30 p.m. -
1 stop6h 50m
Deal found 3/11C$ 339
Fri 4/126:15 p.m. -
Nonstop1h 07m
Sat 5/1210:10 a.m. -
Nonstop1h 11m
Deal found 1/11C$ 341
Sat 12/125:50 a.m. -
1 stop4h 42m
Sun 13/123:15 p.m. -
1 stop4h 12m
Deal found 1/11C$ 346
Sun 27/129:05 a.m. -
Nonstop1h 25m
Sun 3/111:00 a.m. -
Nonstop1h 20m
Deal found 3/11C$ 348
Sat 12/127:15 p.m. -
1 stop3h 42m
Mon 14/128:40 a.m. -
1 stop8h 58m
Deal found 1/11C$ 352
Fri 4/1212:55 p.m. -
Nonstop1h 06m
Fri 4/123:59 p.m. -
1 stop7h 00m
Deal found 4/11C$ 359
Thu 19/116:15 p.m. -
Nonstop1h 07m
Sun 22/1110:10 a.m. -
Nonstop1h 10m
Deal found 1/11C$ 360
Tue 8/127:45 a.m. -
1 stop6h 55m
Thu 10/122:30 p.m. -
1 stop6h 50m
Deal found 4/11C$ 362

Find flight deals from Canada to Seattle

Round-trip from

C$ 275

One-way from

C$ 71

Popular in

June

Cheapest in

February

Average price

C$ 669

Good round-trip deal

C$ 424 or less

Good one-way deal

C$ 245 or less
WestJet
  • WestJet
  • 1/1-8/1
  • 2 total stops
  • 11h 30m total
  • Canada to Seattle
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26/11-31/12
  • 26/11-31/12
  • 1 total stop
  • 10h 42m total
  • Canada to Seattle
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 15 potential savings vs. average RT price).
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Average for round-trip flights in November 2026
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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

EdmontonSeattle

YEG Edmonton - SEA Seattle/Tacoma Intl

YEGSEA

Edmonton

Wed 23/12

6:00 a.m.-9:09 a.m.

1 stop5h 09m

Seattle/Tacoma Intl

Wed 31/12

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

Nonstop0h 00m

C$ 94

KelownaSeattle

YLW Kelowna - SEA Seattle/Tacoma Intl

YLWSEA

Kelowna

Sun 27/12

9:05 a.m.-9:30 a.m.

Nonstop1h 25m

Seattle/Tacoma Intl

Wed 31/12

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

Nonstop0h 00m

C$ 208
Quickest round-trip

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Sat 30/1

6:40 p.m.-6:42 p.m.

Nonstop1h 02m

Seattle/Tacoma Intl

Wed 31/12

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

Nonstop0h 00m

C$ 211

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Tue 24/11

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

Nonstop1h 07m

Seattle/Tacoma Intl

Wed 31/12

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

Nonstop0h 00m

C$ 212

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Thu 31/12

7:00 a.m.-7:10 a.m.

Nonstop1h 10m

Seattle/Tacoma Intl

Wed 31/12

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

Nonstop0h 00m

C$ 212

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Thu 26/11

2:35 p.m.-2:42 p.m.

Nonstop1h 07m

Seattle/Tacoma Intl

Wed 31/12

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

Nonstop0h 00m

C$ 212

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Fri 5/3

1:00 p.m.-6:26 p.m.

1 stop6h 26m

Seattle/Tacoma Intl

Wed 31/12

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

Nonstop0h 00m

C$ 236

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Thu 3/12

2:00 p.m.-8:47 p.m.

1 stop7h 47m

Seattle/Tacoma Intl

Wed 31/12

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

Nonstop0h 00m

C$ 236

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Tue 24/11

2:00 p.m.-11:18 p.m.

1 stop10h 18m

Seattle/Tacoma Intl

Wed 31/12

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

Nonstop0h 00m

C$ 236

KelownaSeattle

YLW Kelowna - SEA Seattle/Tacoma Intl

YLWSEA

Kelowna

Tue 15/12

3:55 p.m.-9:44 a.m.

2 stops18h 49m

Seattle/Tacoma Intl

Wed 31/12

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

Nonstop0h 00m

C$ 239

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/11

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$ 373). Flying from Canada to Seattle in June is currently the most expensive (average of C$ 626). 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 44% versus a flight at noon.

Weekly flight availability from Canada to Seattle

The most flights from CA0 to SEA are scheduled on a Wednesday (5 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (1 on average).

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. Saturday 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
13,139 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

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
13,139 reviews
Alaska Airlines
7.9
Good
13,139 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

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
8,698 reviews
Alaska Airlines
7.9
Good
13,139 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

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
7.3
Good
10,461 reviews
Alaska Airlines
7.9
Good
13,139 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

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
3,441 reviews
Alaska Airlines
7.9
Good
13,139 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

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
11,857 reviews
Alaska Airlines
7.9
Good
13,139 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

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 1h 18m. The time it takes to get you to your destination can typically vary by up to 14h 11m. 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$ 84. Alaska Airlines flights start at C$ 118 while deals on Harbour Air Seaplanes start at C$ 137 one-way.

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

    Most travellers choose Toronto Pearson Intl - Seattle/Tacoma Intl, Calgary - Seattle/Tacoma Intl or Vancouver Intl - 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: Qatar Airways (100%), Alaska Airlines (87%), Air Canada( 63%).

  • What are the cheapest flights from Canada to Seattle?

    Looking at all options, your cheapest flight can be booked for C$ 380. While the most popular route (Toronto Pearson Intl - Seattle/Tacoma Intl) can be booked for C$ 514 on average, our data indicates C$ 784 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$ 373). Flying from Canada to Seattle in June is currently the most expensive (average of C$ 626). 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
Tukwila
Mukilteo
Ellensburg
Renton
Lynnwood
Cashmere
Tacoma
Marysville
Federal Way
Kirkland
Leavenworth

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Canada to Seattle

AirlineCheapestAverageFlexibilityOn-time
Harbour Air SeaplanesCheapestC$ 150AverageC$ 304FlexibilityNo cancel feeOn-timeN/A
Search Harbour Air Seaplanes flights
WestJetCheapestC$ 158AverageC$ 490FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 162AverageC$ 556FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Alaska AirlinesCheapestC$ 189AverageC$ 508FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapestC$ 223AverageC$ 757FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 254AverageC$ 805FlexibilityNo cancel feeOn-time69%
Search United 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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