Cheap Flights from Toronto, ON to Seattle, WA from $168

Return flight: Seattle – Toronto

On Cheapflightsplus.com you will find 3 direct and 997 connecting flights from Toronto to Seattle. You can compare airfare deals from 8 airlines and multiple travel sites from $168, book and save on cheap plane tickets and last minute offers. Also check out YTO-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from Toronto to Seattle depends on and how to choose the most interesting flight option for you.

Distance between Toronto and Seattle is 3326 miles. Time difference between the cities is 3h. Airplanes depart 06:10 to 23:20 from 3 Toronto airports and arrive 06:10 to 23:20 to 3 Seattle airports. Average flight time is 5h 19m.

  • The fastest flight 5h 19m
  • Average flight time 5h 19m
  • The earliest flight 06:10
  • The latest flight 23:20
  • Distance 2067 ml

The cheapest months to travel to Seattle are october (from 168 $), june (from 168 $), august (from 178 $).

The most expensive months are november (from 314 $), september (from 235 $), january (from 219 $).

What is the lowest airfare Toronto to Seattle?

The cheapest plane ticket found by our users is $168. This airfare is for economy class on one-way UA8714 flight by United Airlines for July 6, 2025 which leaves Pearson International in Toronto at 06:30 am and arrives at Seattle Seattle-Tacoma Intl at 18:28.

Economy class
$168
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Business class
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First class
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Flight Schedule Toronto (Ontario) to Seattle (Washington)

06:30 — 18:28
14h 58m flight time
Find flight
from$168
06:30 — 08:08 Toronto — Newark
UA8714 United Airlines
7h 8m stop
15:29 — 18:41 Newark — Seattle
UA2630 United Airlines
07:00 — 16:20
12h 20m flight time
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from$168
07:00 — 07:59 Toronto — Chicago
UA490 United Airlines
5h 44m stop
13:40 — 16:20 Chicago — Seattle
UA1485 United Airlines
07:30 — 18:28
13h 58m flight time
Find flight
from$168
07:30 — 09:04 Toronto — Newark
UA3435 United Airlines
6h 11m stop
15:29 — 18:41 Newark — Seattle
UA2630 United Airlines
08:10 — 20:41
15h 31m flight time
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from$168
08:10 — 09:41 Toronto — Washington D.C.
UA8271 United Airlines
8h 7m stop
17:48 — 20:41 Washington D.C. — Seattle
UA326 United Airlines
08:25 — 10:45
5h 20m flight time
Find flight
from$404
Toronto — Seattle
AC541 Air Canada
08:40 — 17:49
12h 9m flight time
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from$168
08:45 — 10:30 Toronto — Denver
UA8651 United Airlines
5h 30m stop
16:15 — 18:14 Denver — Seattle
UA745 United Airlines
08:45 — 22:37
16h 52m flight time
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from$168
08:45 — 11:15 Toronto — Houston
UA8350 United Airlines
8h 35m stop
19:50 — 22:37 Houston — Seattle
UA2456 United Airlines
08:50 — 11:09
5h 19m flight time
Find flight
from$264
Toronto — Seattle
UA8270 United Airlines
10:30 — 20:56
13h 26m flight time
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from$168
10:30 — 13:12 Toronto — San Francisco
UA8702 United Airlines
5h 37m stop
18:55 — 21:11 San Francisco — Seattle
UA2019 United Airlines
12:45 — 20:41
10h 56m flight time
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from$168
12:45 — 14:19 Toronto — Washington D.C.
UA3595 United Airlines
3h 29m stop
17:48 — 20:41 Washington D.C. — Seattle
UA326 United Airlines
14:30 — 20:41
9h 11m flight time
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from$168
14:30 — 16:10 Toronto — Washington D.C.
UA3637 United Airlines
1h 38m stop
17:48 — 20:41 Washington D.C. — Seattle
UA326 United Airlines
15:35 — 12:39+1day
24h 4m flight time
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from$168
15:35 — 16:24 Toronto — Chicago
PD2393 Porter Airlines
17h 41m stop
10:05 — 12:39 Chicago — Seattle
HA6295 Hawaiian Airlines
16:45 — 19:04
5h 19m flight time
Find flight
from$193
Toronto — Seattle
AS973 Alaska Airlines
17:15 — 22:39
8h 24m flight time
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from$168
17:15 — 18:15 Toronto — Chicago
UA1371 United Airlines
1h 44m stop
19:59 — 22:42 Chicago — Seattle
UA2211 United Airlines
18:00 — 10:52+1day
19h 52m flight time
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from$168
18:00 — 19:48 Toronto — Newark
UA3460 United Airlines
11h 57m stop
07:45 — 10:52 Newark — Seattle
UA1330 United Airlines
Full flight schedule will help you in detecting at what time planes fly from Toronto to Seattle. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on October 7, 2025.

Popular Airlines on the Route

The flight Toronto — Seattle is served by 8 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by Air Canada - 75 departures per week at the price of from $ 182 . And the most expensive tickets are offered by Air Transat airline - from $ 448.

Direct flights

There are 3 nonstop flights on the route. The fastest direct flight is AS973 by Alaska Airlines takes 5h 19m and the cheapest is UA8714 by United Airlines for $193.

  • AS - Alaska Airlines
    from $193
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  • AC - Air Canada
    from $404
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  • UA - United Airlines
    from $264
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See more direct flights

Connecting Flights

There are 997 flights with layovers on the route. The fastest connecting flight is AC503 by Air Canada takes 7h 19m and the cheapest is UA8714 by United Airlines for $168.

  • AC - Air Canada
    from $182
    Find
  • F8 - Freedom Airlines
    from $219
    Find
  • AS - Alaska Airlines
    from $313
    Find
  • PD - Porter Airlines
    from $168
    Find
  • SY - Sun Country Airlines
    from $225
    Find
  • UA - United Airlines
    from $168
    Find
  • WS - WestJet
    from $178
    Find
  • TS - Air Transat
    from $211
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See more connecting flights

Airports

You can fly from Toronto to Seattle from 3 airports (Buttonville Municipal, Toronto Island, Pearson International).

Toronto airports

  • Buttonville Municipal-YKZ
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  • Toronto Island-YTZ
    from $168
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  • Pearson International-YYZ
    from $168
    Find

Seattle airports

  • Boeing Field International Airport-BFI
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  • Seattle-Tacoma Intl-SEA
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  • Kenmore Air Harbor SPB-LKE
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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