Cheap flights from Toronto to Seattle

Round-trip
Economy
Toronto (YTO)
Seattle (SEA)
Depart
Return
Any month
Compare vs. Cheapflights |

The best prices from Toronto to Seattle/Tacoma Intl are usually found in January or February, booked 49 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

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

All the information you need to plan the best YTO to SEA flight in 2021: compare Toronto to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
YTO - SEA
Price
C$ 488 - C$ 651

Popular in

December

High demand for flights, 14% potential price rise

Cheapest in

January

Best time to find cheap flights, 13% potential price drop

Round-trip from

C$ 488

From Toronto to Seattle/Tacoma Intl

One-way from

C$ 251

One-way flight from Toronto to Seattle/Tacoma Intl

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 Toronto to Seattle?

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from Toronto to Seattle?

To save up to 14% on this flight, we recommend booking at least 46 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Toronto to Seattle from C$ 657 1-2 weeks out and tickets from C$ 677 for flights departing within the next 72 hours.

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

A simple way to save on the total cost of your ticket is to fly from Toronto to Seattle at noon. If you’re flexible enough to do this you can expect to save up to 5% on your trip compared to booking a flight in the morning.

Cheap flights from Toronto to Seattle in September, October 2021

The best prices found for YTO to SEA flights for September, October
30 Oct - 3 Nov
C$ 369pp
YKF
Toronto Kitchener-Waterloo
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
YKF
Toronto Kitchener-Waterloo
30 Oct - 3 Nov
C$ 375pp
YKF
Toronto Kitchener-Waterloo
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
     
3 STOPS
YKF
Toronto Kitchener-Waterloo
6 Oct - 9 Nov
C$ 406pp
YYZ
Toronto Pearson Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
     
3 STOPS
YYZ
Toronto Pearson Intl

Toronto to Seattle 2021 flight deals

Cheap flights to Seattle from Toronto found for this year
30 Oct - 3 Nov
C$ 369pp
YKF
Toronto Kitchener-Waterloo
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
YKF
Toronto Kitchener-Waterloo
30 Oct - 3 Nov
C$ 375pp
YKF
Toronto Kitchener-Waterloo
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
     
3 STOPS
YKF
Toronto Kitchener-Waterloo
6 Oct - 9 Nov
C$ 406pp
YYZ
Toronto Pearson Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
     
3 STOPS
YYZ
Toronto Pearson Intl

Direct flights to Seattle from Toronto

Save time with Toronto to Seattle direct flight deals
5 Nov - 21 Nov
C$ 486pp
YYZ
Toronto Pearson Intl
Air Canada
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
Direct
YYZ
Toronto Pearson Intl
30 Oct - 3 Nov
C$ 498pp
YYZ
Toronto Pearson Intl
Air Canada
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
Direct
YYZ
Toronto Pearson Intl
15 Nov - 21 Nov
C$ 508pp
YYZ
Toronto Pearson Intl
Air Canada
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
Direct
YYZ
Toronto Pearson Intl

Last minute flights from Toronto to Seattle

Late deals on round-trip flights to Seattle from Toronto, departing today and this week
25 Sep - 25 Oct
C$ 563pp
YYZ
Toronto Pearson Intl
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
YYZ
Toronto Pearson Intl
28 Sep - 5 Oct
C$ 566pp
YYZ
Toronto Pearson Intl
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
YYZ
Toronto Pearson Intl
25 Sep - 2 Oct
C$ 568pp
YYZ
Toronto Pearson Intl
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
YYZ
Toronto Pearson Intl

One-way flights to Seattle/Tacoma Intl from Toronto

The cheapest one-way flights from Toronto to Seattle
7:00 a.m. - 1:07 p.m.
British Airways
1 stop
9h 07m
YYZ - SEA
British Airways
C$ 251
Gate1.ca
6:30 a.m. - 2:03 p.m.
Delta
2 stops
10h 33m
YYZ - SEA
Delta
C$ 273
Delta
3:40 a.m. - 10:13 a.m.
Air Canada
1 stop
9h 33m
YYZ - SEA
Air Canada
C$ 277
Air Canada

Related info for your journey

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

Flight FAQs

From Toronto to Seattle

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

For a flight from Toronto to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 18.4 km from the centre of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 1 inbound flight from Toronto per day. 6 airlines have flights to Seattle/Tacoma Intl from Toronto on a regular basis.

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

Due to the rapidly changing circumstances due to COVID-19, airlines like Air Canada, United Airlines, and American Airlines flying from Toronto to Seattle/Tacoma Intl have implemented new flexible cancellation policies.

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

Yes, there are multiple flights from Toronto to Seattle for under C$ 400. The cheapest flight booked recently is on Multiple Airlines for just C$ 369, but on average you can expect to pay C$ 424.

Are there direct flights from Toronto to Seattle for under C$ 500 on Cheapflights?

Cheapflights has 20 direct flights from Toronto to Seattle under C$ 500. A good price for a direct flight from Toronto to Seattle is less than C$ 599.

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

There are currently 18+ open flights from Toronto to Seattle within the next 7 days for less than C$ 600.

What are the cheapest airlines flying from Toronto to Seattle round-trip?

Currently priced at C$ 415, Finnair will fly you from Toronto to Seattle and back. In addition to Finnair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Air Canada - these airlines can fly you to your destination from C$ 431 and C$ 439, respectively. Users have found that Finnair is 26% cheaper than the other options available to this destination.

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

The cheapest airlines for a one-way flight from Toronto to Seattle are Air Canada (C$ 222), American Airlines (C$ 248), and British Airways (C$ 251).

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COVID Restrictions

View COVID Travel Restrictions for Seattle (SEA)

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

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

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

COVID-19 testing requirements
Visitors from Toronto must present a negative RT-PCR (NAAT) or Antigen (quick-test) 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.

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

Returning to Toronto from Seattle/Tacoma Intl

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.

Hide COVID Travel Restrictions for Seattle (SEA)

Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from Toronto to Seattle.
Today's exchange rate
C$ 1 = $0.79
Flight duration from Toronto to SEA
4h 56m

Airports servicing Toronto

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

Airports servicing Seattle

Top 5 airlines flying from Toronto to Seattle/Tacoma Intl

The chart below displays the airlines Cheapflights users travelling from Toronto to Seattle 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
WestJet
C$ 326 C$ 670 No cancel fee 60%
Search WestJet flights
American Airlines
C$ 333 C$ 643 No cancel fee 71%
Search American Airlines flights
Delta
C$ 349 C$ 598 No cancel fee N/A
Search Delta flights
Air Canada
C$ 407 C$ 814 No cancel fee 67%
Search Air Canada flights
United Airlines
C$ 516 C$ 724 No cancel fee 69%
Search United Airlines flights

Hourly flight availability from Toronto to Seattle

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