Cheap Flights from Seattle, WA to Toronto, ON from $140

One way Round trip

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On Cheapflightsplus.com you will find 5 direct and 995 connecting flights from Seattle to Toronto. You can compare airfare deals from 12 airlines and multiple travel sites from $140, 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: $140 (one-way), $240 (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 $140. The fastest direct flight takes 4h 33m and the fastest connecting – 6h 36m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $151 Find flight	07:22 Seattle Seattle-Tacoma Intl	14:55 Toronto Pearson International	4h 33m	Alaska Airlines	AS972
from $174 Find flight	06:05 Seattle Seattle-Tacoma Intl	13:50 Toronto Pearson International	4h 45m	United Airlines	UA8244
from $477 Find flight	06:05 Seattle Seattle-Tacoma Intl	13:50 Toronto Pearson International	4h 45m	Air Canada	AC540
from $477 Find flight	18:20 Seattle Seattle-Tacoma Intl	07:30+1 день Toronto Pearson International	10h 10m	United Airlines	UA436
from $140 Find flight	17:28 Seattle Seattle-Tacoma Intl	06:46+1 день Toronto Pearson International	10h 18m layover 3h 30m - Las Vegas	Spirit Airlines	NK204 WS1119
from $147 Find flight	13:40 Seattle Seattle-Tacoma Intl	06:46+1 день Toronto Pearson International	14h 6m layover 7h 5m - Las Vegas	Frontier Airlines	F94830 WS1119
from $147 Find flight	13:33 Seattle Seattle-Tacoma Intl	06:46+1 день Toronto Pearson International	14h 13m layover 7h 22m - Las Vegas	Spirit Airlines	NK414 WS1119
from $155 Find flight	21:21 Seattle Seattle-Tacoma Intl	06:46+2 дня Toronto Pearson International	30h 25m layover 23h 35m - Las Vegas	Spirit Airlines	NK1456 WS1119
from $156 Find flight	16:00 Seattle Seattle-Tacoma Intl	05:42+1 день Toronto Pearson International	10h 42m layover 3h 54m - Las Vegas	Spirit Airlines	NK414 PD656
from $170 Find flight	16:58 Seattle Seattle-Tacoma Intl	20:05+1 день Toronto Pearson International	24h 7m layover 17h 10m - Phoenix	Frontier Airlines	F93974 PD642
from $153 Find flight	15:15 Seattle Seattle-Tacoma Intl	05:58+1 день Toronto Pearson International	11h 43m layover 2h 5m - Calgary 3h 3m - Edmonton	WestJet	WS1553 WS241 WS418
from $160 Find flight	15:20 Seattle Seattle-Tacoma Intl	06:00+1 день Toronto Pearson International	11h 40m layover 1h 45m - Calgary 3h 1m - Edmonton	WestJet	WS3613 WS3137 WS418
from $161 Find flight	09:19 Seattle Seattle-Tacoma Intl	06:46+1 день Toronto Pearson International	18h 27m layover 5h 29m - Denver 3h 48m - Las Vegas	Frontier Airlines	F93406 F94967 WS1119
from $161 Find flight	20:19 Seattle Seattle-Tacoma Intl	06:46+2 дня Toronto Pearson International	31h 27m layover 5h 55m - Denver 16h 16m - Las Vegas	Frontier Airlines	F91176 F92015 WS1119
from $169 Find flight	20:28 Seattle Seattle-Tacoma Intl	23:35+1 день Toronto Pearson International	24h 7m layover 5h 51m - Denver 8h 46m - Orlando	Frontier Airlines	F91176 F94920 PD508
from $169 Find flight	20:56 Seattle Seattle-Tacoma Intl	23:35+2 дня Toronto Pearson International	47h 39m layover 23h 38m - Denver 14h 41m - Orlando	Frontier Airlines	F91176 F91734 PD508

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on April 03, 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
06:05 — 13:50	06:05 — 13:50 UA8244 United Airlines Seattle — Toronto	4h 45m	Find flight from$174
06:05 — 13:50	06:05 — 13:50 AC540 Air Canada Seattle — Toronto	4h 45m	Find flight from$477
06:05 — 13:50	06:05 — 13:50 AC8244 Air Canada Seattle — Toronto	4h 45m	Find flight from$494
07:22 — 14:55	07:22 — 14:55 AS972 Alaska Airlines Seattle — Toronto	4h 33m	Find flight from$151
18:20 — 07:30 +1 day	18:20 — 07:30 UA436 United Airlines Seattle — Toronto	10h 10m	Find flight from$477
05:00 — 22:52	05:00 — 08:47 UA2269 United Airlines Seattle — Denver 8h 57m stop 17:40 — 22:52 UA8456 United Airlines Denver — Toronto	14h 52m including layover	Find flight from$175
05:02 — 15:02	05:00 — 08:47 UA2269 United Airlines Seattle — Denver 1h 9m stop 09:50 — 15:02 UA1874 United Airlines Denver — Toronto	7h including layover	Find flight from$175
06:15 — 19:25	06:15 — 09:02 UA1571 United Airlines Seattle — Los Angeles 2h 49m stop 11:50 — 19:25 UA8328 United Airlines Los Angeles — Toronto	10h 10m including layover	Find flight from$175
07:00 — 16:46	07:00 — 13:06 UA1373 United Airlines Seattle — Chicago 59m stop 14:05 — 16:46 UA8474 United Airlines Chicago — Toronto	6h 46m including layover	Find flight from$175
11:05 — 21:25	10:55 — 16:59 UA747 United Airlines Seattle — Chicago 1h 18m stop 18:38 — 21:25 UA265 United Airlines Chicago — Toronto	7h 20m including layover	Find flight from$175
12:35 — 22:52	12:35 — 16:17 UA1483 United Airlines Seattle — Denver 1h 23m stop 17:40 — 22:52 UA8456 United Airlines Denver — Toronto	7h 17m including layover	Find flight from$175
12:50 — 00:17 +1 day	12:50 — 15:09 UA1509 United Airlines Seattle — San Francisco 1h 16m stop 16:25 — 00:17 UA8396 United Airlines San Francisco — Toronto	8h 27m including layover	Find flight from$175
13:33 — 06:46 +1 day	12:50 — 15:24 NK414 Spirit Airlines Seattle — Las Vegas 7h 22m stop 23:25 — 06:46 WS1119 WestJet Las Vegas — Toronto	14h 13m including layover	Find flight from$147
13:40 — 06:46 +1 day	13:40 — 16:20 F94830 Frontier Airlines Seattle — Las Vegas 7h 5m stop 23:25 — 06:46 WS1119 WestJet Las Vegas — Toronto	14h 6m including layover	Find flight from$147
16:00 — 05:42 +1 day	19:45 — 22:13 NK414 Spirit Airlines Seattle — Las Vegas 3h 54m stop 22:25 — 05:42 PD656 Porter Airlines Las Vegas — Toronto	10h 42m including layover	Find flight from$156
16:58 — 20:05 +1 day	16:58 — 20:50 F93974 Frontier Airlines Seattle — Phoenix 17h 10m stop 14:00 — 20:05 PD642 Porter Airlines Phoenix — Toronto	24h 7m including layover	Find flight from$170
17:28 — 06:46 +1 day	17:28 — 19:55 NK204 Spirit Airlines Seattle — Las Vegas 3h 30m stop 23:25 — 06:46 WS1119 WestJet Las Vegas — Toronto	10h 18m including layover	Find flight from$140
17:28 — 05:42 +1 day	17:28 — 19:55 NK204 Spirit Airlines Seattle — Las Vegas 2h 30m stop 22:25 — 05:42 PD656 Porter Airlines Las Vegas — Toronto	9h 14m including layover	Find flight from$173
21:21 — 06:46 +2 days	21:21 — 23:50 NK1456 Spirit Airlines Seattle — Las Vegas 23h 35m stop 23:25 — 06:46 WS1119 WestJet Las Vegas — Toronto	30h 25m including layover	Find flight from$155
23:17 — 11:46 +1 day	22:36 — 06:43 UA341 United Airlines Seattle — Newark 2h 25m stop 10:00 — 11:46 UA3555 United Airlines Newark — Toronto	9h 29m including layover	Find flight from$175
23:17 — 13:43 +1 day	23:17 — 07:35 UA341 United Airlines Seattle — Newark 4h 25m stop 12:00 — 13:43 UA3400 United Airlines Newark — Toronto	11h 26m including layover	Find flight from$175
09:19 — 06:46 +1 day	08:18 — 12:01 F93406 Frontier Airlines Seattle — Denver 5h 29m stop 18:33 — 19:37 F94967 Frontier Airlines Denver — Las Vegas 3h 48m stop 23:25 — 06:46 WS1119 WestJet Las Vegas — Toronto	18h 27m including layover	Find flight from$161
09:19 — 23:35 +1 day	09:19 — 13:04 F93406 Frontier Airlines Seattle — Denver 11h 16m stop 00:20 — 05:54 F91734 Frontier Airlines Denver — Orlando 14h 41m stop 20:35 — 23:35 PD508 Porter Airlines Orlando — Toronto	35h 16m including layover	Find flight from$169
14:55 — 19:16 +1 day	14:55 — 17:32 F94830 Frontier Airlines Seattle — Las Vegas 15h 18m stop 08:50 — 16:35 PD658 Porter Airlines Las Vegas — Montreal 1h 10m stop 17:45 — 19:16 PD132 Porter Airlines Montreal — Toronto	25h 21m including layover	Find flight from$174
14:55 — 20:10 +1 day	14:55 — 17:32 F94830 Frontier Airlines Seattle — Las Vegas 15h 18m stop 08:50 — 16:35 PD658 Porter Airlines Las Vegas — Montreal 2h 10m stop 18:45 — 20:10 PD2484 Porter Airlines Montreal — Toronto	26h 15m including layover	Find flight from$174
15:15 — 05:58 +1 day	15:15 — 17:55 WS1553 WestJet Seattle — Calgary 2h 5m stop 20:00 — 21:04 WS241 WestJet Calgary — Edmonton 3h 3m stop 00:05 — 06:00 WS418 WestJet Edmonton — Toronto	11h 43m including layover	Find flight from$153
15:15 — 05:58 +1 day	15:15 — 17:55 WS1553 WestJet Seattle — Calgary 3h 50m stop 21:45 — 22:49 WS289 WestJet Calgary — Edmonton 1h 18m stop 00:05 — 06:00 WS418 WestJet Edmonton — Toronto	11h 43m including layover	Find flight from$153
19:45 — 19:16 +1 day	19:45 — 22:13 NK414 Spirit Airlines Seattle — Las Vegas 10h 37m stop 08:50 — 16:35 PD658 Porter Airlines Las Vegas — Montreal 1h 10m stop 17:45 — 19:16 PD132 Porter Airlines Montreal — Toronto	20h 31m including layover	Find flight from$173
19:45 — 20:10 +1 day	19:45 — 22:13 NK414 Spirit Airlines Seattle — Las Vegas 10h 37m stop 08:50 — 16:35 PD658 Porter Airlines Las Vegas — Montreal 2h 10m stop 18:45 — 20:10 PD2484 Porter Airlines Montreal — Toronto	21h 25m including layover	Find flight from$173
20:19 — 06:46 +2 days	20:19 — 00:05 F91176 Frontier Airlines Seattle — Denver 5h 55m stop 06:00 — 07:09 F92015 Frontier Airlines Denver — Las Vegas 16h 16m stop 23:25 — 06:46 WS1119 WestJet Las Vegas — Toronto	31h 27m including layover	Find flight from$161
20:28 — 23:35 +1 day	20:28 — 00:14 F91176 Frontier Airlines Seattle — Denver 5h 51m stop 06:05 — 11:49 F94920 Frontier Airlines Denver — Orlando 8h 46m stop 20:35 — 23:35 PD508 Porter Airlines Orlando — Toronto	24h 7m including layover	Find flight from$169

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

*Departure and arrival times - local. Updated on April 3, 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 00:25 to 23:59 from 3 Seattle airports and arrive 00:25 to 23:59 to 3 Toronto airports. Average flight time is 4h 45m.

The fastest flight 4h 33m
Average flight time 4h 45m
The earliest flight 00:25
The latest flight 23:59
Distance 2067 ml

The cheapest months to travel to Toronto are november (from 140 $), december (from 147 $), january (from 160 $).

The most expensive months are february (from 175 $), january (from 160 $), december (from 147 $).

What is the lowest airfare Seattle to Toronto?

The cheapest plane ticket found by our users is $140. This airfare is for economy class on one-way NK204 flight by Spirit Airlines for November 12, 2024 which leaves Seattle-Tacoma Intl in Seattle at 17:28 am and arrives at Toronto Pearson International at 06:46.

Economy class

$140

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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 12 regular airlines and 5 low-cost airlines. Most of the flights on this route are operated by American Airlines - 42 departures per week at the price of from $ 329 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 550.

Direct flights

There are 5 nonstop flights on the route. The fastest direct flight is AS972 by Alaska Airlines takes 4h 33m and the cheapest is NK204 by Spirit Airlines for $151.

AS - Alaska Airlines

from $151

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AC - Air Canada

from $477

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UA - United Airlines

from $174

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See more direct flights

Connecting Flights

There are 995 flights with layovers on the route. The fastest connecting flight is UA2494 by United Airlines takes 6h 36m and the cheapest is NK204 by Spirit Airlines for $140.

AA - American Airlines

from $329

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AS - Alaska Airlines

from $193

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AC - Air Canada

from $283

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F9 - Frontier Airlines

from $147

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B6 - JetBlue

from $282

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SY - Sun Country Airlines

from $238

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DL - Delta Air Lines Inc.

from $222

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HA - Hawaiian Airlines

from $232

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X1 - Computer Reservations System

from $374

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WS - WestJet

from $153

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UA - United Airlines

from $175

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NK - Spirit Airlines

from $140

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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 $140
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Kenmore Air Harbor SPB-LKE

from $374
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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 12 airlines that use 10 aircraft brands. They range from huge modern airplanes to small-sized.

Boeing 737-800

from $175

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Boeing 737-100/200

from $178

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Boeing 737-900

from $222

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Airbus A321

from $222

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Airbus A318/319/320/321

from $282

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Canadair Regional Jet 900

from $284

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Boeing 737 MAX 8

from $303

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Embraer 175 (short wing)

from $326

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Boeing 737 MAX 9

from $334

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Canadair Regional Jet 700

from $334

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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

Find
Seattle — Phoenix

from $67

Find
Seattle — San Diego

from $74

Find
Seattle — Los Angeles

from $53

Find
Seattle — Denver

from $243

Find
Seattle — Dallas

from $72

Find
Seattle — Boston

from $63

Find

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.