Cheap flights from Seattle (SEA) to Toronto (YTO) from $128

This is the cheapest one-way flight price, found on 5/31. Prices may vary by date and flight preferences.
SEA — YTO
Jun 6 — Jun 131

The best prices from Seattle/Tacoma Intl to Toronto are usually found in January or February, booked 28 days in advance, depart on a Friday or Wednesday and return on a Wednesday

How to find the cheapest flight from Seattle (SEA) to Toronto (YTO)

All the information you need to plan the best SEA to YTO flight in 2023: compare Seattle to Toronto flight prices with the expected peak season, weather and rainfall in Toronto.

Popular in

July

Cheapest in

January

Round-trip from

$246

One-way from

$128
High demand for flights, 24% potential price rise
Best time to find cheap flights, 20% potential price drop
From Seattle/Tacoma Intl to Toronto (YTO)
One-way flight from Seattle/Tacoma Intl to Toronto (YTO)

SEA - YTO

Price

$246 - $366

YTO

Temperature

21.2 - 69.8 °F

YTO

Rainfall

2 - 3.3 inches

Cheap flights from Seattle to Toronto in June, July 2023

The best prices found for SEA to YTO flights for June, July
Scroll through some of the best deals on flights from Seattle to Toronto in 2023. Check back soon for alternative fares.

Seattle to Toronto 2023 flight deals

Cheap flights to Toronto from Seattle found for this year
Scroll through some of the best deals on flights from Seattle to Toronto in 2023. Check back soon for alternative fares.

Cheap WestJet flights from Seattle to Toronto

Check out some of the cheapest WestJet flights we've come across from Seattle to Toronto. It's recommended that users confirm their flight details before booking.
  • One of the most popular airlines traveling from Seattle to Toronto is WestJet. Flights on this route from WestJet typically cost $693.77 RT, a price that is 55% cheaper than the average Seattle to Toronto flight. The cheapest flight found was $447 RT. When traveling from Seattle to Toronto on WestJet, the most popular airport to depart from is Seattle/Tacoma Intl Airport and the most popular airport to arrive at is Toronto Pearson Intl Airport. When flying from Seattle to Toronto, WestJet flights are 3% more popular than any other airline flying that same route.

Cheap Air Canada flights from Seattle to Toronto

Some of the lowest-priced Air Canada flights we've found at this time heading from Seattle to Toronto. Deals are refreshing constantly so come back soon for more options.
  • Air Canada is one of the most popular airlines used for those traveling from Seattle to Toronto. Flights on this route from Air Canada typically cost $570.86 RT, a price that is 94% cheaper than the average Seattle to Toronto flight. The cheapest flight found was $191 RT. The most popular departure airport in Seattle when flying to Toronto is Seattle/Tacoma Intl Airport. The most popular airport to fly into when visiting Toronto is Toronto Pearson Intl Airport. When flying from Seattle to Toronto, Air Canada flights are -9% more popular than any other airline flying that same route.

Non-stop flights to Toronto from Seattle

Save time with Seattle to Toronto direct flight deals
For a quicker trip, book one of these direct flights from Seattle to Toronto. Select from other flights from Seattle to Toronto by using the search form above.

Last minute flights from Seattle to Toronto

Late deals on return flights to Toronto from Seattle, departing today and this week
Have a look at some of the flights available from Seattle to Toronto departing last-minute. It's wise to confirm all flight details are correct before booking.

One-way flights to Toronto from Seattle

The cheapest one-way flights from Seattle to Toronto
Users traveling one-way from Seattle to Toronto can select one of these great deals. Those seeking round-trip flights from Seattle to Toronto should utilize the search form at the the top of the page.

Find flights from Seattle to Toronto within your budget

Use the slider to find flights from Seattle to Toronto that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$294 - $536

Route

Depart

Return

Price

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 10/10

1 stop13h 25m

Toronto Pearson Intl

Tue 10/24

1 stop8h 59m

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 9/19

1 stop13h 25m

Toronto Pearson Intl

Wed 9/20

1 stop14h 49m

Seattle/Tacoma IntlHamilton

SEA - YHM

SEAYHM

Seattle/Tacoma Intl

Tue 9/5

1 stop9h 19m

Hamilton

Wed 9/13

1 stop9h 23m

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 9/19

1 stop7h 35m

Toronto Pearson Intl

Sat 9/23

1 stop14h 49m

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 10/19

1 stop7h 35m

Toronto Pearson Intl

Sun 10/22

1 stop8h 59m

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 8/1

1 stop7h 38m

Toronto Pearson Intl

Wed 8/9

2 stops12h 34m

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 9/8

1 stop7h 37m

Toronto Pearson Intl

Wed 9/20

1 stop7h 59m

Seattle/Tacoma IntlToronto Kitchener-Waterloo

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Mon 8/14

1 stop17h 41m

Toronto Kitchener-Waterloo

Mon 8/21

1 stop20h 19m

Seattle/Tacoma IntlToronto Island

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 9/13

1 stop7h 19m

Toronto Island

Thu 9/21

1 stop8h 54m

Flights are sorted by cheapest first

Deals found on 6/1

Reviews of Airlines Servicing Toronto

Peruse reviews from past customers who have flown with WestJet and Air Canada from Seattle to Toronto to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.6
Good
1,531 reviews

Food

6.8

Comfort

7.4

Crew

8.2

Overall

7.6

Boarding

7.8

Entertainment

7.1

Reviews

1 / 10

My luggage was lost,they cannot find, I have important medical devices packed new clothing etc I had to purchase same am without my medical devices until Boston Scientific can replace.

United Airlines
7.6
Good
1,531 reviews
United Airlines
7.6
Good
1,531 reviews

Food

6.8

Comfort

7.4

Crew

8.2

Overall

7.6

Boarding

7.8

Entertainment

7.1

Reviews

1 / 10

My luggage was lost,they cannot find, I have important medical devices packed new clothing etc I had to purchase same am without my medical devices until Boston Scientific can replace.

WestJet
7.1
Good
628 reviews
United Airlines
7.6
Good
1,531 reviews

Food

6.8

Comfort

7.4

Crew

8.2

Overall

7.6

Boarding

7.8

Entertainment

7.1

Reviews

1 / 10

My luggage was lost,they cannot find, I have important medical devices packed new clothing etc I had to purchase same am without my medical devices until Boston Scientific can replace.

Air Canada
6.7
Okay
929 reviews
United Airlines
7.6
Good
1,531 reviews

Food

6.8

Comfort

7.4

Crew

8.2

Overall

7.6

Boarding

7.8

Entertainment

7.1

Reviews

1 / 10

My luggage was lost,they cannot find, I have important medical devices packed new clothing etc I had to purchase same am without my medical devices until Boston Scientific can replace.

Related info for your journey

Useful info, stats and facts about Seattle to Toronto flights.

Top 6 airlines flying from Seattle to Toronto

The chart below displays the airlines Cheapflights users traveling from Seattle to Toronto choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Air CanadaCheapest$191Average$571FlexibilityNo cancel feeOn-time67%COVID-19 safety
Search Air Canada flights
WestJetCheapest$375Average$511FlexibilityNo cancel feeOn-time60%COVID-19 safety
Search WestJet flights
American AirlinesCheapest$378Average$638FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
United AirlinesCheapest$447Average$694FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
DeltaCheapest$525Average$641FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
Alaska AirlinesCheapest$552Average$639FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights

Hourly flight availability from Seattle to Toronto

See what time of day planes typically take off from Seattle to Toronto
1%of flight departuresEarly morningMidnight to 6 am
56%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
43%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Seattle to Toronto

See how many times per day planes take to the skies headed from Seattle to Toronto
Sunday3daily flights
Monday3daily flights
Tuesday3daily flights
Wednesday3daily flights
Thursday3daily flights
Friday3daily flights
Saturday2daily flights
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