Cheap Flights from Seattle, WA to Toronto, ON from $137

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On Cheapflightsplus.com you will find 3 direct and 997 connecting flights from Seattle to Toronto. You can compare airfare deals from 8 airlines and multiple travel sites from $137, book and save on cheap plane tickets and last minute offers. Also check out SEA-YTO flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Seattle to Toronto 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: $137 (one-way), $235 (round-trip).

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Best Flights from Seattle to Toronto Today

Take a look at the list of non stop flights and flights with layovers from Seattle to Toronto with the lowest price of $137. The fastest direct flight takes 4h 37m and the fastest connecting – 6h 11m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $161 Find flight	07:23 Seattle Seattle-Tacoma Intl	15:00 Toronto Pearson International	4h 37m	Alaska Airlines	AS972
from $382 Find flight	11:35 Seattle Seattle-Tacoma Intl	19:15 Toronto Pearson International	4h 40m	Air Canada	AC540
from $384 Find flight	11:35 Seattle Seattle-Tacoma Intl	19:15 Toronto Pearson International	4h 40m	United Airlines	UA8031
from $137 Find flight	17:50 Seattle Seattle-Tacoma Intl	11:57+1 день Toronto Toronto Island	15h 7m layover 9h 16m - Chicago	Hawaiian Airlines	HA6819 PD2388
from $143 Find flight	17:55 Seattle Seattle-Tacoma Intl	11:57+1 день Toronto Toronto Island	15h 2m layover 9h 16m - Chicago	Alaska Airlines	AS538 PD2388
from $143 Find flight	13:39 Seattle Seattle-Tacoma Intl	11:57+1 день Toronto Toronto Island	19h 18m layover 13h 27m - Chicago	Alaska Airlines	AS410 PD2388
from $151 Find flight	22:05 Seattle Seattle-Tacoma Intl	14:19+1 день Toronto Pearson International	13h 14m layover 6h 38m - Washington D.C.	United Airlines	UA2402 UA3490
from $151 Find flight	05:00 Seattle Seattle-Tacoma Intl	22:36 Toronto Pearson International	14h 36m layover 6h 56m - Houston	United Airlines	UA1668 UA313
from $151 Find flight	13:00 Seattle Seattle-Tacoma Intl	10:04+1 день Toronto Pearson International	18h 4m layover 11h 25m - Washington D.C.	United Airlines	UA2275 UA3612
from $158 Find flight	13:45 Seattle Seattle-Tacoma Intl	00:05+1 день Toronto Pearson International	7h 20m layover 1h 37m - Vancouver	Air Canada	AC8805 AC186
from $158 Find flight	07:20 Seattle Seattle-Tacoma Intl	19:46 Toronto Toronto Island	9h 26m layover 2h 56m - Montreal	Air Canada	AC512 AC7975
from $162 Find flight	23:50 Seattle Seattle-Tacoma Intl	09:58+1 день Toronto Pearson International	7h 8m layover 1h 11m - Chicago	United Airlines	UA747 UA5640
from $162 Find flight	23:37 Seattle Seattle-Tacoma Intl	11:44+1 день Toronto Pearson International	9h 7m layover 2h 8m - Newark	United Airlines	UA299 UA3555
from $162 Find flight	23:37 Seattle Seattle-Tacoma Intl	12:43+1 день Toronto Pearson International	10h 6m layover 3h 12m - Newark	United Airlines	UA299 UA8430
from $155 Find flight	14:55 Seattle Seattle-Tacoma Intl	05:50+1 день Toronto Pearson International	11h 55m layover 2h 0m - Vancouver 3h 27m - Calgary	Air Canada	AC8807 AC224 AC154
from $162 Find flight	17:14 Seattle Seattle-Tacoma Intl	09:19+1 день Toronto Pearson International	13h 5m layover 0h 50m - Los Angeles 2h 29m - Newark	United Airlines	UA2397 UA2397 UA3702

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on August 05, 2025

Flight Schedule Seattle (Washington) to Toronto (Ontario)

Full flight schedule will help you in detecting at what time planes fly from Seattle to Toronto. 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	Flight Details	Flight Duration	Price
07:23 — 15:00	07:23 — 15:00 AS972 Alaska Airlines Seattle — Toronto	4h 37m	Find flight from$161
11:35 — 19:15	11:35 — 19:15 AC540 Air Canada Seattle — Toronto	4h 40m	Find flight from$382
11:35 — 19:15	11:35 — 19:15 UA8031 United Airlines Seattle — Toronto	4h 40m	Find flight from$384
00:17 — 10:52	00:17 — 06:21 AS384 Alaska Airlines Seattle — Chicago 1h 46m stop 08:07 — 10:52 AS6216 Alaska Airlines Chicago — Toronto	7h 35m including layover	Find flight from$182
00:20 — 09:58	00:20 — 06:28 UA1832 United Airlines Seattle — Chicago 36m stop 07:04 — 09:58 UA5629 United Airlines Chicago — Toronto	6h 38m including layover	Find flight from$163
05:00 — 22:36	05:00 — 11:19 UA1668 United Airlines Seattle — Houston 6h 56m stop 18:13 — 22:36 UA313 United Airlines Houston — Toronto	14h 36m including layover	Find flight from$151
05:20 — 01:05 +1 day	05:20 — 06:28 AC8801 Air Canada Seattle — Vancouver 11h 2m stop 17:30 — 01:05 AC124 Air Canada Vancouver — Toronto	16h 45m including layover	Find flight from$179
07:20 — 19:46	07:20 — 15:30 AC512 Air Canada Seattle — Montreal 2h 56m stop 18:25 — 19:50 AC7975 Air Canada Montreal — Toronto	9h 26m including layover	Find flight from$158
09:50 — 23:00	09:50 — 15:53 AS426 Alaska Airlines Seattle — Dallas 3h 7m stop 19:00 — 23:00 AS6187 Alaska Airlines Dallas — Toronto	10h 10m including layover	Find flight from$182
10:49 — 21:03 +1 day	10:49 — 13:34 F91178 Frontier Airlines Seattle — Los Angeles 23h 36m stop 13:10 — 21:03 PD662 Porter Airlines Los Angeles — Toronto	31h 14m including layover	Find flight from$167
12:39 — 06:47 +1 day	12:30 — 13:46 AS3436 Alaska Airlines Seattle — Kelowna 9h 33m stop 23:30 — 06:47 WS514 WestJet Kelowna — Toronto	15h 8m including layover	Find flight from$191
13:00 — 10:04 +1 day	13:00 — 20:57 UA2275 United Airlines Seattle — Washington D.C. 11h 25m stop 08:22 — 10:04 UA3612 United Airlines Washington D.C. — Toronto	18h 4m including layover	Find flight from$151
13:39 — 11:57 +1 day	13:39 — 19:48 AS410 Alaska Airlines Seattle — Chicago 13h 27m stop 09:15 — 11:57 PD2388 Porter Airlines Chicago — Toronto	19h 18m including layover	Find flight from$143
15:58 — 06:20 +1 day	15:20 — 17:51 NK2328 Spirit Airlines Seattle — Las Vegas 4h 29m stop 23:10 — 06:35 PD656 Porter Airlines Las Vegas — Toronto	11h 22m including layover	Find flight from$185
15:59 — 11:57 +1 day	15:59 — 22:04 HA6821 Hawaiian Airlines Seattle — Chicago 11h 11m stop 09:15 — 11:57 TS7058 Air Transat Chicago — Toronto	16h 58m including layover	Find flight from$182
16:58 — 06:20 +1 day	16:58 — 19:36 NK782 Spirit Airlines Seattle — Las Vegas 3h 19m stop 22:55 — 06:20 PD656 Porter Airlines Las Vegas — Toronto	10h 22m including layover	Find flight from$175
17:50 — 11:57 +1 day	17:55 — 23:59 HA6819 Hawaiian Airlines Seattle — Chicago 9h 16m stop 09:40 — 12:22 PD2388 Porter Airlines Chicago — Toronto	15h 7m including layover	Find flight from$137
17:55 — 11:57 +1 day	17:55 — 23:59 AS538 Alaska Airlines Seattle — Chicago 9h 16m stop 09:40 — 12:22 PD2388 Porter Airlines Chicago — Toronto	15h 2m including layover	Find flight from$143
18:42 — 11:50 +1 day	18:33 — 23:53 SY286 Sun Country Airlines Seattle — Minneapolis 8h 51m stop 08:50 — 11:50 SY1697 Sun Country Airlines Minneapolis — Toronto	14h 8m including layover	Find flight from$180
19:59 — 12:56 +1 day	19:59 — 23:50 UA757 United Airlines Seattle — Denver 7h 55m stop 07:45 — 12:56 UA8456 United Airlines Denver — Toronto	13h 57m including layover	Find flight from$162
19:59 — 15:11 +1 day	19:59 — 23:50 UA757 United Airlines Seattle — Denver 10h 6m stop 09:56 — 15:11 UA1874 United Airlines Denver — Toronto	16h 12m including layover	Find flight from$162
22:05 — 14:19 +1 day	22:05 — 06:02 UA2402 United Airlines Seattle — Washington D.C. 6h 38m stop 12:40 — 14:19 UA3490 United Airlines Washington D.C. — Toronto	13h 14m including layover	Find flight from$151
22:15 — 17:09 +1 day	22:15 — 06:12 UA2402 United Airlines Seattle — Washington D.C. 9h 18m stop 15:30 — 17:09 UA3652 United Airlines Washington D.C. — Toronto	15h 54m including layover	Find flight from$163
23:37 — 11:44 +1 day	23:37 — 07:48 UA299 United Airlines Seattle — Newark 2h 8m stop 09:56 — 11:44 UA3555 United Airlines Newark — Toronto	9h 7m including layover	Find flight from$162
23:37 — 12:43 +1 day	23:37 — 07:48 UA299 United Airlines Seattle — Newark 3h 12m stop 11:00 — 12:43 UA8430 United Airlines Newark — Toronto	10h 6m including layover	Find flight from$162
06:25 — 06:53 +1 day	06:25 — 10:16 F93406 Frontier Airlines Seattle — Denver 9h 24m stop 19:40 — 22:11 WS1569 WestJet Denver — Calgary 2h 49m stop 01:00 — 06:53 WS646 WestJet Calgary — Toronto	21h 28m including layover	Find flight from$178
10:50 — 06:12 +1 day	10:50 — 13:42 F92176 Frontier Airlines Seattle — Los Angeles 4h 23m stop 18:05 — 22:09 WS1515 WestJet Los Angeles — Calgary 2h 11m stop 00:20 — 06:12 WS652 WestJet Calgary — Toronto	16h 22m including layover	Find flight from$165
12:30 — 06:53 +1 day	12:30 — 16:15 SY1698 Sun Country Airlines Seattle — Denver 3h 25m stop 19:40 — 22:11 WS1569 WestJet Denver — Calgary 2h 49m stop 01:00 — 06:53 WS646 WestJet Calgary — Toronto	15h 23m including layover	Find flight from$186
14:55 — 05:50 +1 day	14:55 — 16:00 AC8807 Air Canada Seattle — Vancouver 2h stop 18:00 — 20:28 AC224 Air Canada Vancouver — Calgary 3h 27m stop 23:55 — 05:50 AC154 Air Canada Calgary — Toronto	11h 55m including layover	Find flight from$155
14:55 — 05:50 +1 day	14:55 — 16:00 AC8807 Air Canada Seattle — Vancouver 3h 30m stop 19:30 — 21:55 AC226 Air Canada Vancouver — Calgary 2h stop 23:55 — 05:50 AC154 Air Canada Calgary — Toronto	11h 55m including layover	Find flight from$155

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on August 5, 2025

Flight Information

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

Distance between Seattle and Toronto is 3326 miles. Time difference between the cities is 3h. Airplanes depart 00:17 to 23:59 from 3 Seattle airports and arrive 00:17 to 23:59 to 3 Toronto airports. Average flight time is 4h 40m.

The fastest flight 4h 37m
Average flight time 4h 40m
The earliest flight 00:17
The latest flight 23:59
Distance 2067 ml

The cheapest months to travel to Toronto are october (from 137 $), september (from 143 $), june (from 151 $).

The most expensive months are november (from 549 $), december (from 221 $), february (from 197 $).

What is the lowest airfare Seattle to Toronto?

The cheapest plane ticket found by our users is $137. This airfare is for economy class on one-way HA6819 flight by Hawaiian Airlines for October 7, 2025 which leaves Seattle-Tacoma Intl in Seattle at 17:50 am and arrives at Toronto Toronto Island at 11:57.

Economy class

$137

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Business class

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First class

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Popular Airlines on the Route

The flight Seattle — Toronto is served by 8 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 185 departures per week at the price of from $ 143 . And the most expensive tickets are offered by United Airlines airline - from $ 570.

Direct flights

There are 3 nonstop flights on the route. The fastest direct flight is AS972 by Alaska Airlines takes 4h 37m and the cheapest is HA6819 by Hawaiian Airlines for $161.

AS - Alaska Airlines

from $161

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AC - Air Canada

from $382

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UA - United Airlines

from $384

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See more direct flights

Connecting Flights

There are 997 flights with layovers on the route. The fastest connecting flight is SY284 by Sun Country Airlines takes 6h 11m and the cheapest is HA6819 by Hawaiian Airlines for $137.

AS - Alaska Airlines

from $143

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AC - Air Canada

from $155

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F9 - Frontier Airlines

from $165

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SY - Sun Country Airlines

from $180

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HA - Hawaiian Airlines

from $137

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UA - United Airlines

from $151

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WS - WestJet

from $201

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NK - Spirit Airlines

from $175

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See more connecting flights

Airports

You can fly from Seattle to Toronto from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).

Seattle airports

Boeing Field International Airport-BFI

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Seattle-Tacoma Intl-SEA

from $137
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Kenmore Air Harbor SPB-LKE

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Toronto airports

Buttonville Municipal-YKZ

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Toronto Island-YTZ

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Pearson International-YYZ

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Airplanes

There are flights to Toronto from Seattle by 8 airlines that use 1 aircraft brands. They range from huge modern airplanes to small-sized.

Canadair Regional Jet 900

from $158

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Top Domestic Destinations from Seattle

You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.

Seattle — Washington D.C.

from $78

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Seattle — Las Vegas

from $62

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Seattle — New York

from $180

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Seattle — Chicago

from $73

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Seattle — Phoenix

from $67

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Seattle — San Diego

from $74

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Seattle — Los Angeles

from $53

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Seattle — Denver

from $243

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Seattle — Dallas

from $72

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Seattle — Boston

from $63

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Top International Destinations from Seattle

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.

Seattle — Tokyo

from $77

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Seattle — London

from $70

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Seattle — Vancouver

from $57

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Seattle — Cancun

from $63

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Seattle — Paris

from $66

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Seattle — Toronto

from $64

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Seattle — Calgary

from $76

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Seattle — Mumbai

from $80

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Seattle — Montreal

from $68

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Seattle — Amsterdam

from $64

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How to book a plane 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.