Cheap flights from Toronto to Seattle

Round-trip
Economy
Toronto (YTO)
Seattle (SEA)
Depart
Return
Any month
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The best prices from Toronto to Seattle 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$ 469 - C$ 626
SEA
Temperature
8 - 25 °C
SEA
Rainfall
18 - 166 mm

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$ 469

From Toronto to Seattle

One-way from

C$ 296

One-way flight from Toronto to Seattle

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?

Saturday flights are generally found to be more expensive for flights from Toronto to Seattle. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Seattle.

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

Find a great deal and save up to 14% by booking at least 46 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Toronto to Seattle within the next two weeks, with the cheapest ticket starting at C$ 632.

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

When flying from Toronto to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 5% versus a flight in the morning.

Cheap flights from Toronto to Seattle in May, June 2021

The best prices found for YTO to SEA flights for May, June
24 Jun - 27 Jun
C$ 487pp
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
27 May - 25 Jun
C$ 507pp
YYZ
Toronto Pearson Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
YYZ
Toronto Pearson Intl
27 May - 25 Jun
C$ 511pp
YYZ
Toronto Pearson Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl

Toronto to Seattle 2021 flight deals

Cheap flights to Seattle from Toronto found for this year
7 Jul - 13 Jul
C$ 486pp
YHM
Toronto Hamilton
WestJet
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
WestJet
   
2 STOPS
YHM
Toronto Hamilton
24 Jun - 27 Jun
C$ 487pp
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
19 Oct - 20 Oct
C$ 487pp
YHM
Toronto Hamilton
WestJet
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
WestJet
   
2 STOPS
YHM
Toronto Hamilton

Direct flights to Seattle from Toronto

Save time with Toronto to Seattle direct flight deals
2 Jul - 23 Jul
C$ 529pp
YYZ
Toronto Pearson Intl
Air Canada
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
Direct
YYZ
Toronto Pearson Intl
7 Jul - 14 Jul
C$ 535pp
YYZ
Toronto Pearson Intl
Air Canada
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
Direct
YYZ
Toronto Pearson Intl
15 Oct - 19 Oct
C$ 537pp
YYZ
Toronto Pearson Intl
United Airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
United Airlines
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
15 May - 29 May
C$ 593pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
15 May - 28 May
C$ 596pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
15 May - 29 May
C$ 604pp
YYZ
Toronto Pearson Intl
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl

One-way flights to Seattle from Toronto

The cheapest one-way flights from Toronto to Seattle
2:30 p.m. - 4:52 p.m.
Air Canada
Direct
5h 22m
YYZ - SEA
Air Canada
C$ 296
Air Canada
12:25 p.m. - 4:45 a.m.
WestJet
2 stops
19h 20m
YKF - SEA
WestJet
C$ 330
2:40 a.m. - 3:11 p.m.
Multiple Airlines
2 stops
15h 31m
YYZ - SEA
Multiple Airlines
C$ 332
FlightNetwork

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 0 inbound flights from Toronto per day. 6 airlines have flights to Seattle/Tacoma Intl from Toronto on a regular basis.

What safety measures are being taken by airlines flying from Toronto to Seattle/Tacoma Intl to control the spread of COVID-19?

Delta is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially-distanced seating (for a limited time) will work towards keeping travellers safer while flying from Toronto to Seattle/Tacoma Intl. Policies will vary by airline.

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$ 491 on Cheapflights?

Yes, there are multiple flights from Toronto to Seattle for under C$ 491. The cheapest flight booked recently is on WestJet for just C$ 486, but on average you can expect to pay C$ 505.

Are there direct flights from Toronto to Seattle for under C$ 614 on Cheapflights?

Cheapflights has 5 direct flights from Toronto to Seattle under C$ 614. A good price for a direct flight from Toronto to Seattle is less than C$ 572.

Are there last-minute flights available from Toronto to Seattle for under C$ 614?

There are currently 9+ open flights from Toronto to Seattle within the next 7 days for less than C$ 614.

Is Toronto weather warmer or cooler than Seattle?

With an average temperature of 25 °C, peak weather can be found in July. As a traveller, expect to see changes in flight prices during that period. The temperatures in Seattle are the same as in Toronto.

How long is the flight from Toronto to Seattle?

There are many flights that can get you from Toronto to Seattle in 5h 21m. Fly via United Airlines, Air Canada, or American Airlines to get the fastest option. This flight may include one or multiple stops.

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

Our cheapest airline available from Toronto to Seattle is WestJet. Our recent data shows that you can find tickets from as low as C$ 487 on this airline. An additional option worth looking into is Air Canada, starting at C$ 530. You may be able to fly from Toronto to Seattle for 10% less than the average price by searching for these airlines.

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

For one-way options, check prices for Air Canada. According to our data, you can fly for as low as C$ 244. Users have also found prices from C$ 269 and C$ 303 on Air Canada and WestJet, respectively.

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 = $0.82
Flight duration
5h 00m
Average temperature for May in Seattle
19.0 °C
Avg rainfall for May in Seattle
45.0 mm

Airports servicing Toronto

Billy Bishop Toronto City Airport (YTZ)
Hamilton (YHM)
Kitchener (YKF)

Airports servicing Seattle

Top 5 airlines flying from Toronto to Seattle

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
Delta
C$ 273 C$ 469 No cancel fee N/A
Search Delta flights
American Airlines
C$ 261 C$ 504 No cancel fee 71%
Search American Airlines flights
WestJet
C$ 255 C$ 525 No cancel fee 60%
Search WestJet flights
United Airlines
C$ 404 C$ 567 No cancel fee 69%
Search United Airlines flights
Air Canada
C$ 319 C$ 637 No cancel fee 67%
Search Air Canada flights
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