Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Canada to Seattle from C$ 165

YYZ — SEA
22 Sep — 29 Sep1
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 18/95:00 a.m. -
1 stop4h 40m
Fri 25/910:30 a.m. -
1 stop5h 25m
Deal found 19/8C$ 281
Sun 6/95:00 a.m. -
1 stop4h 40m
Tue 8/910:30 a.m. -
1 stop5h 25m
Deal found 19/8C$ 282
Fri 4/91:40 p.m. -
1 stop5h 05m
Sun 6/910:30 a.m. -
1 stop5h 25m
Deal found 23/8C$ 284
Wed 9/91:40 p.m. -
1 stop5h 05m
Wed 16/910:30 a.m. -
1 stop5h 25m
Deal found 21/8C$ 286
Wed 16/911:45 a.m. -
1 stop7h 00m
Wed 23/910:30 a.m. -
1 stop5h 25m
Deal found 19/8C$ 288
Sat 19/911:45 a.m. -
1 stop7h 00m
Sat 26/910:30 a.m. -
1 stop6h 20m
Deal found 23/8C$ 289
Wed 9/91:40 p.m. -
1 stop5h 05m
Sat 12/910:30 a.m. -
1 stop6h 20m
Deal found 19/8C$ 293
Sat 12/91:40 p.m. -
1 stop5h 05m
Fri 18/910:30 a.m. -
1 stop5h 25m
Deal found 22/8C$ 299
Tue 8/95:00 a.m. -
1 stop4h 40m
Tue 15/910:30 a.m. -
1 stop6h 20m
Deal found 22/8C$ 300
Sat 5/93:35 p.m. -
1 stop5h 25m
Sun 6/910:30 a.m. -
2 stops7h 45m
Deal found 21/8C$ 312
Sun 6/93:00 p.m. -
1 stop4h 45m
Wed 9/97:35 p.m. -
1 stop4h 09m
Deal found 19/8C$ 317
Sat 12/91:05 p.m. -
1 stop5h 40m
Tue 15/910:30 a.m. -
2 stops12h 55m
Deal found 20/8C$ 318

Find flight deals from Canada to Seattle

Round-trip from

C$ 281

One-way from

C$ 165

Popular in

June

Cheapest in

February

Average price

C$ 621

Good round-trip deal

C$ 297 or less

Good one-way deal

C$ 265 or less
WestJet
  • WestJet
  • 18/9-25/9
  • 2 total stops
  • 10h 05m total
  • Canada to Seattle
Search Deals
WestJet
  • WestJet
  • 17/9
  • 1 total stop
  • 4h 40m total
  • Canada to Seattle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 108 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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.
Search Deals

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

Sun 6/9

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

1 stop4h 45m

Seattle/Tacoma Intl

Wed 9/9

7:35 p.m.-12:44 a.m.

1 stop4h 09m

C$ 317

EdmontonSeattle

YEG Edmonton - SEA Seattle/Tacoma Intl

YEGSEA

Edmonton

Sat 19/9

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

1 stop4h 45m

Seattle/Tacoma Intl

Sat 26/9

10:30 a.m.-3:25 p.m.

1 stop3h 55m

C$ 319

WinnipegSeattle

YWG Winnipeg - SEA Seattle/Tacoma Intl

YWGSEA

Winnipeg

Fri 11/9

2:55 p.m.-6:45 p.m.

1 stop5h 50m

Seattle/Tacoma Intl

Fri 25/9

10:30 a.m.-5:25 p.m.

1 stop4h 55m

C$ 334

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Tue 15/9

9:47 a.m.-8:43 p.m.

1 stop10h 56m

Seattle/Tacoma Intl

Sun 20/9

3:00 p.m.-4:14 p.m.

Nonstop1h 14m

C$ 354

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Fri 4/9

3:38 p.m.-4:55 p.m.

Nonstop1h 17m

Seattle/Tacoma Intl

Mon 7/9

7:59 p.m.-9:11 p.m.

Nonstop1h 12m

C$ 356

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Wed 16/9

6:15 a.m.-7:35 a.m.

Nonstop1h 20m

Seattle/Tacoma Intl

Sun 20/9

9:45 p.m.-10:59 p.m.

Nonstop1h 14m

C$ 356

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Sun 13/9

7:00 a.m.-12:20 p.m.

1 stop5h 20m

Seattle/Tacoma Intl

Sat 26/9

10:50 a.m.-12:04 p.m.

Nonstop1h 14m

C$ 365

VancouverSeattle

YVR Vancouver Intl - SEA Seattle/Tacoma Intl

YVRSEA

Vancouver Intl

Mon 26/10

7:55 a.m.-9:01 a.m.

Nonstop1h 06m

Seattle/Tacoma Intl

Thu 29/10

10:55 p.m.-11:55 p.m.

Nonstop1h 00m

C$ 366

CalgarySeattle

YYC Calgary - SEA Seattle/Tacoma Intl

YYCSEA

Calgary

Thu 29/10

6:00 a.m.-5:57 p.m.

1 stop12h 57m

Seattle/Tacoma Intl

Fri 30/10

5:05 a.m.-2:21 p.m.

1 stop8h 16m

C$ 372

WinnipegSeattle

YWG Winnipeg - SEA Seattle/Tacoma Intl

YWGSEA

Winnipeg

Sat 12/9

7:00 a.m.-6:45 p.m.

1 stop13h 45m

Seattle/Tacoma Intl

Sat 19/9

10:30 a.m.-5:25 p.m.

1 stop4h 55m

C$ 377

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/8

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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$ 351). Flying from Canada to Seattle in June is currently the most expensive (average of C$ 612). 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 47% versus a flight at noon.

Weekly flight availability from Canada to Seattle

The most flights from CA0 to SEA are scheduled on a Saturday (4 on average). You will have fewer flight options on Monday, 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 127 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?

Saturday tends to have the lowest number of delays on this route, whereas Thursday 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 76 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
12,840 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.5

Comfort

7.8

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
12,840 reviews
Alaska Airlines
7.9
Good
12,840 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.5

Comfort

7.8

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
8,517 reviews
Alaska Airlines
7.9
Good
12,840 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.5

Comfort

7.8

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
10,115 reviews
Alaska Airlines
7.9
Good
12,840 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.5

Comfort

7.8

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
3,438 reviews
Alaska Airlines
7.9
Good
12,840 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.5

Comfort

7.8

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
11,526 reviews
Alaska Airlines
7.9
Good
12,840 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Overall

7.9

Food

7.0

Crew

8.5

Comfort

7.8

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 WestJet, Delta, and Alaska Airlines fly from Canada to Seattle in about 1h 06m. The time it takes to get you to your destination can typically vary by up to 3h 39m. Airlines will cover a distance of 204 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$ 102 while deals on Harbour Air Seaplanes start at C$ 135 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 (88%), Brussels Airlines (41%), Air Canada( 40%).

  • What are the cheapest flights from Canada to Seattle?

    Looking at all options, your cheapest flight can be booked for C$ 300. While the most popular route (Toronto Pearson Intl - Seattle/Tacoma Intl) can be booked for C$ 504 on average, our data indicates C$ 608 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$ 351). Flying from Canada to Seattle in June is currently the most expensive (average of C$ 612). 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
Leavenworth
Mukilteo
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$ 122AverageC$ 522FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Harbour Air SeaplanesCheapestC$ 148AverageC$ 299FlexibilityNo cancel feeOn-timeN/A
Search Harbour Air Seaplanes flights
WestJetCheapestC$ 156AverageC$ 475FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 187AverageC$ 429FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapestC$ 219AverageC$ 630FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 251AverageC$ 717FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 418AverageC$ 621FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.