Cheap Flights from Toronto, ON to Seattle, WA from $177

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On Cheapflightsplus.com you will find 2 direct and 518 connecting flights from Toronto to Seattle. You can compare airfare deals from 8 airlines and multiple travel sites from $177, 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: $177 (one-way), $304 (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 $177. The fastest direct flight takes 5h 19m and the fastest connecting – 7h 19m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $203 Find flight	16:45 Toronto Pearson International	19:04 Seattle Seattle-Tacoma Intl	5h 19m	Alaska Airlines	AS973
from $276 Find flight	08:50 Toronto Pearson International	11:09 Seattle Seattle-Tacoma Intl	5h 19m	United Airlines	UA8270
from $177 Find flight	15:35 Toronto Toronto Island	12:39+1 день Seattle Seattle-Tacoma Intl	24h 4m layover 17h 41m - Chicago	Porter Airlines	PD2393 HA6295
from $206 Find flight	10:40 Toronto Pearson International	14:49+1 день Seattle Seattle-Tacoma Intl	31h 9m layover 23h 0m - Los Angeles	Porter Airlines	PD663 HA6204
from $210 Find flight	07:55 Toronto Toronto Island	17:49 Seattle Seattle-Tacoma Intl	12h 54m layover 6h 24m - Chicago	Porter Airlines	PD2387 HA6297
from $210 Find flight	07:55 Toronto Toronto Island	20:35 Seattle Seattle-Tacoma Intl	15h 40m layover 9h 10m - Chicago	Porter Airlines	PD2387 HA6296
from $213 Find flight	15:00 Toronto Pearson International	20:28 Seattle Seattle-Tacoma Intl	8h 28m layover 2h 15m - Calgary	WestJet	WS663 WS1554
from $214 Find flight	06:45 Toronto Pearson International	12:31 Seattle Seattle-Tacoma Intl	8h 46m layover 2h 18m - Edmonton	WestJet	WS419 WS3710
from $214 Find flight	07:55 Toronto Toronto Island	17:49 Seattle Seattle-Tacoma Intl	12h 54m layover 6h 24m - Chicago	Porter Airlines	PD2387 AS407
from $214 Find flight	07:55 Toronto Toronto Island	20:35 Seattle Seattle-Tacoma Intl	15h 40m layover 9h 10m - Chicago	Porter Airlines	PD2387 AS337
from $187 Find flight	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 $205 Find flight	14:00 Toronto Pearson International	11:24+1 день Seattle Seattle-Tacoma Intl	24h 24m layover 1h 11m - Vancouver 12h 10m - Los Angeles	WestJet	WS715 WS1698 F91177
from $212 Find flight	09:00 Toronto Pearson International	18:38 Seattle Seattle-Tacoma Intl	12h 38m layover 3h 28m - Edmonton 2h 5m - Calgary	WestJet	WS421 WS152 WS1552
from $212 Find flight	09:00 Toronto Pearson International	20:28 Seattle Seattle-Tacoma Intl	14h 28m layover 3h 28m - Edmonton 3h 55m - Calgary	WestJet	WS421 WS152 WS1554
from $213 Find flight	09:00 Toronto Pearson International	18:49 Seattle Seattle-Tacoma Intl	12h 49m layover 3h 28m - Edmonton 2h 5m - Calgary	WestJet	WS421 WS152 WS3614
from $215 Find flight	10:40 Toronto Pearson International	15:53+1 день Seattle Seattle-Tacoma Intl	32h 13m layover 7h 30m - Los Angeles 15h 17m - Las Vegas	Porter Airlines	PD663 NK473 NK781

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on July 15, 2025

Flight Schedule Toronto (Ontario) to Seattle (Washington)

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	Flight Details	Flight Duration	Price
08:50 — 11:09	08:50 — 11:09 UA8270 United Airlines Toronto — Seattle	5h 19m	Find flight from$276
16:45 — 19:04	16:45 — 19:04 AS973 Alaska Airlines Toronto — Seattle	5h 19m	Find flight from$203
06:45 — 12:31	06:45 — 09:02 WS419 WestJet Toronto — Edmonton 2h 18m stop 11:20 — 12:34 WS3710 WestJet Edmonton — Seattle	8h 46m including layover	Find flight from$214
07:55 — 17:49	07:55 — 08:45 PD2387 Porter Airlines Toronto — Chicago 6h 24m stop 15:17 — 17:54 HA6297 Hawaiian Airlines Chicago — Seattle	12h 54m including layover	Find flight from$210
07:55 — 20:35	07:55 — 08:45 PD2387 Porter Airlines Toronto — Chicago 9h 10m stop 17:58 — 20:35 HA6296 Hawaiian Airlines Chicago — Seattle	15h 40m including layover	Find flight from$210
08:00 — 18:38	08:00 — 10:20 WS649 WestJet Toronto — Calgary 7h 25m stop 17:45 — 18:38 WS1552 WestJet Calgary — Seattle	13h 38m including layover	Find flight from$242
08:15 — 16:20	07:55 — 08:50 UA8533 United Airlines Toronto — Chicago 4h 31m stop 13:40 — 16:20 UA1485 United Airlines Chicago — Seattle	11h 5m including layover	Find flight from$228
10:40 — 14:49 +1 day	10:40 — 13:00 PD663 Porter Airlines Toronto — Los Angeles 23h stop 12:00 — 14:49 HA6204 Hawaiian Airlines Los Angeles — Seattle	31h 9m including layover	Find flight from$206
10:40 — 11:24 +1 day	10:40 — 13:00 PD663 Porter Airlines Toronto — Los Angeles 19h 33m stop 08:33 — 11:24 F91177 Frontier Airlines Los Angeles — Seattle	27h 44m including layover	Find flight from$212
11:00 — 18:38	11:00 — 13:19 WS657 WestJet Toronto — Calgary 4h 25m stop 17:45 — 18:38 WS1552 WestJet Calgary — Seattle	10h 38m including layover	Find flight from$245
13:55 — 12:59 +1 day	13:55 — 16:10 F8623 Freedom Airlines Toronto — Calgary 19h 55m stop 12:05 — 12:59 WS1550 WestJet Calgary — Seattle	26h 4m including layover	Find flight from$248
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$177
16:18 — 22:18	16:10 — 18:06 UA568 United Airlines Toronto — Denver 2h 18m stop 21:05 — 23:11 UA2651 United Airlines Denver — Seattle	9h including layover	Find flight from$231
18:20 — 00:59 +1 day	18:55 — 21:42 UA8433 United Airlines Toronto — San Francisco 1h 48m stop 09:00 — 11:20 UA573 United Airlines San Francisco — Seattle	9h 39m including layover	Find flight from$229
19:00 — 08:48 +1 day	19:00 — 21:37 UA2462 United Airlines Toronto — San Francisco 8h 53m stop 06:30 — 08:48 UA1969 United Airlines San Francisco — Seattle	16h 48m including layover	Find flight from$228
20:05 — 15:53 +1 day	20:05 — 21:55 PD655 Porter Airlines Toronto — Las Vegas 15h 15m stop 13:10 — 15:53 NK781 Spirit Airlines Las Vegas — Seattle	22h 48m including layover	Find flight from$218
20:05 — 10:40 +1 day	20:05 — 21:55 PD655 Porter Airlines Toronto — Las Vegas 10h 5m stop 08:00 — 10:40 HA6135 Hawaiian Airlines Las Vegas — Seattle	17h 35m including layover	Find flight from$239
21:10 — 10:45 +1 day	21:10 — 22:47 UA8266 United Airlines Toronto — Newark 8h 56m stop 07:45 — 10:52 UA1330 United Airlines Newark — Seattle	16h 35m including layover	Find flight from$228
22:20 — 12:31 +1 day	22:20 — 00:38 WS445 WestJet Toronto — Edmonton 10h 42m stop 11:20 — 12:34 WS3710 WestJet Edmonton — Seattle	17h 11m including layover	Find flight from$243
06:30 — 20:24	06:30 — 08:49 WS653 WestJet Toronto — Calgary 3h 1m stop 11:50 — 14:12 WS1524 WestJet Calgary — Los Angeles 3h 24m stop 17:36 — 20:24 HA6203 Hawaiian Airlines Los Angeles — Seattle	16h 54m including layover	Find flight from$234
09:00 — 18:38	09:00 — 11:17 WS421 WestJet Toronto — Edmonton 3h 28m stop 14:45 — 15:40 WS152 WestJet Edmonton — Calgary 2h 5m stop 17:45 — 18:38 WS1552 WestJet Calgary — Seattle	12h 38m including layover	Find flight from$212
09:00 — 20:28	09:00 — 11:16 WS421 WestJet Toronto — Edmonton 3h 28m stop 14:45 — 15:41 WS152 WestJet Edmonton — Calgary 3h 55m stop 19:35 — 20:28 WS1554 WestJet Calgary — Seattle	14h 28m including layover	Find flight from$212
11:00 — 11:24 +1 day	11:00 — 13:20 WS657 WestJet Toronto — Calgary 1h 35m stop 14:55 — 17:17 WS1514 WestJet Calgary — Los Angeles 15h 16m stop 08:33 — 11:24 F91177 Frontier Airlines Los Angeles — Seattle	27h 24m including layover	Find flight from$226
12:00 — 23:59	12:00 — 14:18 WS425 WestJet Toronto — Edmonton 1h 17m stop 15:35 — 18:10 WS1430 WestJet Edmonton — Los Angeles 3h 5m stop 21:15 — 23:59 HA6196 Hawaiian Airlines Los Angeles — Seattle	14h 59m including layover	Find flight from$222
12:00 — 23:59	12:00 — 14:18 WS425 WestJet Toronto — Edmonton 1h 17m stop 15:35 — 18:10 WS1430 WestJet Edmonton — Los Angeles 3h 5m stop 21:15 — 23:59 AS1055 Alaska Airlines Los Angeles — Seattle	14h 59m including layover	Find flight from$226
14:00 — 11:24 +1 day	14:00 — 16:14 WS715 WestJet Toronto — Vancouver 1h 11m stop 17:25 — 20:23 WS1698 WestJet Vancouver — Los Angeles 12h 10m stop 08:33 — 11:24 F91177 Frontier Airlines Los Angeles — Seattle	24h 24m including layover	Find flight from$205
15:00 — 11:24 +1 day	15:00 — 17:20 WS663 WestJet Toronto — Calgary 2h 5m stop 19:25 — 21:47 WS1512 WestJet Calgary — Los Angeles 10h 46m stop 08:33 — 11:24 F91177 Frontier Airlines Los Angeles — Seattle	23h 24m including layover	Find flight from$187
21:40 — 14:09 +1 day	21:40 — 23:55 F8629 Freedom Airlines Toronto — Calgary 11h 20m stop 11:15 — 11:25 WS187 WestJet Calgary — Kelowna 1h 40m stop 13:05 — 14:09 WS3750 WestJet Kelowna — Seattle	19h 29m including layover	Find flight from$230
22:25 — 11:24 +2 days	22:25 — 00:39 WS731 WestJet Toronto — Vancouver 8h 6m stop 08:45 — 11:45 WS1696 WestJet Vancouver — Los Angeles 20h 48m stop 08:33 — 11:24 F91177 Frontier Airlines Los Angeles — Seattle	39h 59m including layover	Find flight from$225

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

*Departure and arrival times - local. Updated on July 15, 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 june (from 176 $), october (from 177 $), august (from 187 $).

The most expensive months are november (from 331 $), september (from 247 $), january (from 231 $).

What is the lowest airfare Toronto to Seattle?

The cheapest plane ticket found by our users is $177. This airfare is for economy class on one-way PD2393 flight by Porter Airlines for October 7, 2025 which leaves Toronto Island in Toronto at 15:35 am and arrives at Seattle Seattle-Tacoma Intl at 12:39.

Economy class

$177

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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 - 9 departures per week at the price of from $ 254 . And the most expensive tickets are offered by WestJet airline - from $ 573.

Direct flights

There are 2 nonstop flights on the route. The fastest direct flight is AS973 by Alaska Airlines takes 5h 19m and the cheapest is PD2393 by Porter Airlines for $203.

AS - Alaska Airlines

from $203

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UA - United Airlines

from $276

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Connecting Flights

There are 518 flights with layovers on the route. The fastest connecting flight is AC503 by Air Canada takes 7h 19m and the cheapest is PD2393 by Porter Airlines for $177.

AC - Air Canada

from $254

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F8 - Freedom Airlines

from $230

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AS - Alaska Airlines

from $329

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PD - Porter Airlines

from $177

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SY - Sun Country Airlines

from $392

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WS - WestJet

from $187

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UA - United Airlines

from $228

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TS - Air Transat

from $222

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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 $177
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Pearson International-YYZ

from $187
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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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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.

Toronto — Ontario

from $75

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Toronto — Miami

from $55

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Toronto — Orlando

from $64

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Toronto — New York

from $54

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Toronto — Las Vegas

from $72

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Toronto — Boston

from $78

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Toronto — Chicago

from $73

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Toronto — Los Angeles

from $65

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Toronto — Nashville

from $56

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Toronto — Tampa

from $66

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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.