Cheap flights from Seattle to Toronto

Round-trip
Economy
Seattle (SEA)
Toronto (YTO)
Depart
Return
Any month
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The best prices from Seattle/Tacoma Intl to Toronto are usually found in January or August, booked 0 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

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 2021: compare Seattle to Toronto flight prices with the expected peak season, weather and rainfall in Toronto.
SEA - YTO
Price
C$ 535 - C$ 811
YTO
Temperature
1 - 25 °C
YTO
Precipitation
29 - 49 mm

Popular in

December

High demand for flights, 19% potential price rise

Cheapest in

January

Best time to find cheap flights, 18% potential price drop

Round-trip from

C$ 535

From Seattle/Tacoma Intl to Toronto

One-way from

C$ 183

One-way flight from Seattle/Tacoma Intl to Toronto

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Seattle to Toronto?

Users have found that flying from Seattle to Toronto on a Tuesday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

When is the cheapest time to fly from Seattle to Toronto (SEA - YTO)?

Unlike in the evening, when flights are generally more expensive, you can save up to 60% on flights from Seattle to Toronto by exploring options for tickets at noon.

Cheap flights from Seattle to Toronto in September, October 2021

The best prices found for SEA to YTO flights for September, October
30 Oct - 2 Nov
C$ 383pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
     
3 STOPS
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Multiple Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl
24 Oct - 2 Nov
C$ 387pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Multiple Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl
18 Oct - 25 Oct
C$ 401pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
YTZ
Toronto Island
YTZ
Toronto Island
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Toronto 2021 flight deals

Cheap flights to Toronto from Seattle found for this year
3 Dec - 6 Dec
C$ 327pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
9 Dec - 13 Dec
C$ 354pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
     
3 STOPS
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
15 Nov - 19 Nov
C$ 356pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Direct flights to Toronto from Seattle

Save time with Seattle to Toronto direct flight deals
1 Dec - 8 Dec
C$ 527pp
SEA
Seattle/Tacoma Intl
Air Canada
Direct
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Air Canada
Direct
SEA
Seattle/Tacoma Intl
1 Dec - 5 Dec
C$ 530pp
SEA
Seattle/Tacoma Intl
Air Canada
Direct
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Air Canada
Direct
SEA
Seattle/Tacoma Intl
5 Nov - 7 Nov
C$ 534pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Direct
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Air Canada
Direct
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Toronto

Late deals on round-trip flights to Toronto from Seattle, departing today and this week
29 Sep - 3 Dec
C$ 532pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
30 Sep - 4 Oct
C$ 551pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Multiple Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl
29 Sep - 6 Oct
C$ 557pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
YYZ
Toronto Pearson Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

One-way flights to Toronto from Seattle

The cheapest one-way flights from Seattle to Toronto
7:56 p.m. - 7:17 a.m.
Alaska Airlines
1 stop
8h 21m
SEA - YYZ
Alaska Airlines
C$ 183
mytrip.com
7:53 p.m. - 12:20 p.m.
American Airlines
1 stop
13h 27m
SEA - YYZ
American Airlines
C$ 212
4:00 a.m. - 1:58 p.m.
Air Canada
1 stop
6h 58m
SEA - YYZ
Air Canada
C$ 214
Air Canada

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Toronto</span> flights.

Flight FAQs

From Seattle to Toronto

What airport do you fly from for flights from Seattle to Toronto?

Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Toronto. 5 airlines have flights from Seattle/Tacoma Intl to Toronto on a regular basis. Booking flights from Seattle/Tacoma Intl to Toronto should not be difficult; the airport handles an average of 1 outbound flight to Toronto per day.

Which airlines flying from Seattle/Tacoma Intl to Toronto have flexible cancellations due to COVID-19?

Air Canada, Delta, and United Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Seattle to Toronto for under C$ 400 on Cheapflights?

Yes, there are multiple flights from Seattle to Toronto for under C$ 400. The cheapest flight booked recently is on Multiple Airlines for just C$ 327, but on average you can expect to pay C$ 383.

Are there direct flights from Seattle to Toronto for under C$ 600 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Toronto under C$ 600. A good price for a direct flight from Seattle to Toronto is less than C$ 646.

Are there last-minute flights available from Seattle to Toronto for under C$ 600?

There are currently 20+ open flights from Seattle to Toronto within the next 7 days for less than C$ 600.

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

C$ 176 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Alaska Airlines and American Airlines, with prices starting from C$ 183 and C$ 194, respectively.

COVID Restrictions

View COVID Travel Restrictions for Toronto, Canada

Do I need a COVID test to fly to Toronto from Seattle?

Information is based on travel restrictions from Seattle/Tacoma Intl to Toronto

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Toronto.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Toronto.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Toronto.

Documents
Compassionate entry for travellers and limited release from quarantine - Foreign nationals traveling without an advance written approval for an exemption of a border restriction may be denied entry into Canada.


Do I need a test to fly back to Seattle from Toronto?

Returning to Seattle/Tacoma Intl from Toronto

COVID-19 testing requirements
Visitors from Toronto must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Toronto are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Toronto, Canada

Destination information for Toronto

Things to know before you go - useful duration and weather info for your trip from Seattle to Toronto.
Today's exchange rate
C$ 1 = C$ 1.00
Average temperature for September in Toronto
22.0 °C
Avg rainfall for September in Toronto
47.0 mm

Airports servicing Seattle

Airports servicing Toronto

Toronto Island (YTZ)
Hamilton (YHM)
Kitchener-Waterloo (YKF)

Top 4 airlines flying from Seattle/Tacoma Intl to Toronto

The chart below displays the airlines Cheapflights users travelling from Seattle to Toronto choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Delta
C$ 274 C$ 566 No cancel fee N/A
Search Delta flights
Air Canada
C$ 292 C$ 838 No cancel fee 67%
Search Air Canada flights
American Airlines
C$ 300 C$ 619 No cancel fee 71%
Search American Airlines flights
United Airlines
C$ 321 C$ 630 No cancel fee 69%
Search United Airlines flights

Hourly flight availability from Seattle to Toronto

See what time of day planes typically take off from Seattle towards Toronto.
Morning 6 AM to noon 100% of flight departures
Early morning Midnight to 6 AM 0% of flight departures
Afternoon Noon to 6 PM 0% of flight departures
Evening 6 PM to midnight 0% of flight departures
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.
Sunday
3 daily flights
Monday
3 daily flights
Tuesday
0 flights
Wednesday
0 flights
Thursday
3 daily flights
Friday
0 flights
Saturday
2 daily flights
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