Cheap Flights from Toronto, ON to Seattle, WA from $167

Return flight: Seattle – Toronto
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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 $167, 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.

Find One-Way and Round-Trip Toronto to Seattle Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $167 (one-way), $286 (round-trip).
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Best Flights from Toronto to Seattle Today

Take a look at the list of non stop flights and flights with layovers from Toronto to Seattle with the lowest price of $167. The fastest direct flight takes 5h 19m and the fastest connecting – 7h 19m.
Price Departure Arrival Flight Duration Airline Flight
from $192
Find flight
16:45
Toronto
Pearson International
 19:04
Seattle
Seattle-Tacoma Intl
 5h 19m Alaska Airlines
AS973
from $262
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08:50
Toronto
Pearson International
 11:09
Seattle
Seattle-Tacoma Intl
 5h 19m United Airlines
UA8270
from $401
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08:25
Toronto
Pearson International
 10:45
Seattle
Seattle-Tacoma Intl
 5h 20m Air Canada
AC541
from $167
Find flight
19:47
Toronto
Pearson International
 00:59+1 день
Seattle
Seattle-Tacoma Intl
 8h 12m
layover
0h 42m - Washington D.C.
 United Airlines
UA3466
UA2713
from $167
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15:35
Toronto
Toronto Island
 12:39+1 день
Seattle
Seattle-Tacoma Intl
 24h 4m
layover
17h 41m - Chicago
 Porter Airlines
PD2393
HA6295
from $177
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15:00
Toronto
Pearson International
 11:24+1 день
Seattle
Seattle-Tacoma Intl
 23h 24m
layover
2h 5m - Calgary
10h 46m - Los Angeles
 WestJet
WS663
WS1512
F91177
from $181
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19:20
Toronto
Toronto Island
 09:21+1 день
Seattle
Seattle-Tacoma Intl
 17h 1m
layover
1h 38m - Ottawa
8h 0m - Vancouver
 Air Canada
AC7712
AC347
AC8798
Show all tickets
*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on September 16, 2025
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 Arrival Flight Details Flight Duration Price
06:30 — 18:28
06:30 — 08:08 UA8714 United Airlines
Toronto — Newark
7h 8m stop
15:29 — 18:41 UA2630 United Airlines
Newark — Seattle
14h 58m
including layover
Find flight
from$167
07:00 — 16:20
07:00 — 07:59 UA490 United Airlines
Toronto — Chicago
5h 44m stop
13:40 — 16:20 UA1485 United Airlines
Chicago — Seattle
12h 20m
including layover
Find flight
from$167
07:30 — 18:28
07:30 — 09:04 UA3435 United Airlines
Toronto — Newark
6h 11m stop
15:29 — 18:41 UA2630 United Airlines
Newark — Seattle
13h 58m
including layover
Find flight
from$167
08:10 — 20:41
08:10 — 09:41 UA8271 United Airlines
Toronto — Washington D.C.
8h 7m stop
17:48 — 20:41 UA326 United Airlines
Washington D.C. — Seattle
15h 31m
including layover
Find flight
from$167
08:25 — 10:45
08:25 — 10:45 AC541 Air Canada
Toronto — Seattle
5h 20m
Find flight
from$401
08:40 — 17:49
08:45 — 10:30 UA8651 United Airlines
Toronto — Denver
5h 30m stop
16:15 — 18:14 UA745 United Airlines
Denver — Seattle
12h 9m
including layover
Find flight
from$167
08:45 — 22:37
08:45 — 11:15 UA8350 United Airlines
Toronto — Houston
8h 35m stop
19:50 — 22:37 UA2456 United Airlines
Houston — Seattle
16h 52m
including layover
Find flight
from$167
08:50 — 11:09
08:50 — 11:09 UA8270 United Airlines
Toronto — Seattle
5h 19m
Find flight
from$262
10:30 — 20:56
10:30 — 13:12 UA8702 United Airlines
Toronto — San Francisco
5h 37m stop
18:55 — 21:11 UA2019 United Airlines
San Francisco — Seattle
13h 26m
including layover
Find flight
from$167
12:45 — 20:41
12:45 — 14:19 UA3595 United Airlines
Toronto — Washington D.C.
3h 29m stop
17:48 — 20:41 UA326 United Airlines
Washington D.C. — Seattle
10h 56m
including layover
Find flight
from$167
14:30 — 20:41
14:30 — 16:10 UA3637 United Airlines
Toronto — Washington D.C.
1h 38m stop
17:48 — 20:41 UA326 United Airlines
Washington D.C. — Seattle
9h 11m
including layover
Find flight
from$167
15:35 — 12:39
+1 day
15:35 — 16:24 PD2393 Porter Airlines
Toronto — Chicago
17h 41m stop
10:05 — 12:39 HA6295 Hawaiian Airlines
Chicago — Seattle
24h 4m
including layover
Find flight
from$167
16:45 — 19:04
16:45 — 19:04 AS973 Alaska Airlines
Toronto — Seattle
5h 19m
Find flight
from$192
17:15 — 22:39
17:15 — 18:15 UA1371 United Airlines
Toronto — Chicago
1h 44m stop
19:59 — 22:42 UA2211 United Airlines
Chicago — Seattle
8h 24m
including layover
Find flight
from$167
18:00 — 10:52
+1 day
18:00 — 19:48 UA3460 United Airlines
Toronto — Newark
11h 57m stop
07:45 — 10:52 UA1330 United Airlines
Newark — Seattle
19h 52m
including layover
Find flight
from$167
*Departure and arrival times - local. Updated on September 16, 2025

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 167 $), june (from 167 $), august (from 177 $).

The most expensive months are november (from 313 $), january (from 218 $), september (from 217 $).

What is the lowest airfare Toronto to Seattle?

The cheapest plane ticket found by our users is $167. 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
$167
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Business class
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First class
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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 $ 181 . And the most expensive tickets are offered by Air Transat airline - from $ 446.

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 $192.

  • AS - Alaska Airlines
    from $192
    Find
  • AC - Air Canada
    from $401
    Find
  • UA - United Airlines
    from $262
    Find
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 $167.

  • AC - Air Canada
    from $181
    Find
  • F8 - Freedom Airlines
    from $218
    Find
  • AS - Alaska Airlines
    from $311
    Find
  • PD - Porter Airlines
    from $167
    Find
  • SY - Sun Country Airlines
    from $223
    Find
  • UA - United Airlines
    from $167
    Find
  • WS - WestJet
    from $177
    Find
  • TS - Air Transat
    from $209
    Find
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 $167
    Find
  • Pearson International-YYZ
    from $167
    Find

Seattle airports

  • Boeing Field International Airport-BFI
    Find
  • Seattle-Tacoma Intl-SEA
    Find
  • Kenmore Air Harbor SPB-LKE
    Find

Airplanes

There are flights to Seattle from Toronto by 8 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top International Destinations from Toronto

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

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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