Cheap Flights from Toronto, ON to Seattle, WA from $171

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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 $171, 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: $171 (one-way), $293 (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 $171. The fastest direct flight takes 5h 19m and the fastest connecting – 7h 19m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $198 Find flight	16:45 Toronto Pearson International	19:04 Seattle Seattle-Tacoma Intl	5h 19m	Alaska Airlines	AS973
from $268 Find flight	08:50 Toronto Pearson International	11:09 Seattle Seattle-Tacoma Intl	5h 19m	United Airlines	UA8270
from $413 Find flight	08:25 Toronto Pearson International	10:45 Seattle Seattle-Tacoma Intl	5h 20m	Air Canada	AC541
from $171 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 $171 Find flight	17:15 Toronto Pearson International	22:39 Seattle Seattle-Tacoma Intl	8h 24m layover 1h 44m - Chicago	United Airlines	UA1371 UA2211
from $171 Find flight	14:30 Toronto Pearson International	20:41 Seattle Seattle-Tacoma Intl	9h 11m layover 1h 38m - Washington D.C.	United Airlines	UA3637 UA326
from $171 Find flight	12:45 Toronto Pearson International	20:41 Seattle Seattle-Tacoma Intl	10h 56m layover 3h 29m - Washington D.C.	United Airlines	UA3595 UA326
from $171 Find flight	08:40 Toronto Pearson International	17:49 Seattle Seattle-Tacoma Intl	12h 9m layover 5h 30m - Denver	United Airlines	UA8651 UA745
from $171 Find flight	07:00 Toronto Pearson International	16:20 Seattle Seattle-Tacoma Intl	12h 20m layover 5h 44m - Chicago	United Airlines	UA490 UA1485
from $171 Find flight	10:30 Toronto Pearson International	20:56 Seattle Seattle-Tacoma Intl	13h 26m layover 5h 37m - San Francisco	United Airlines	UA8702 UA2019
from $171 Find flight	07:30 Toronto Pearson International	18:28 Seattle Seattle-Tacoma Intl	13h 58m layover 6h 11m - Newark	United Airlines	UA3435 UA2630
from $171 Find flight	06:30 Toronto Pearson International	18:28 Seattle Seattle-Tacoma Intl	14h 58m layover 7h 8m - Newark	United Airlines	UA8714 UA2630
from $172 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 $197 Find flight	06:30 Toronto Pearson International	12:57 Seattle Seattle-Tacoma Intl	9h 27m layover 3h 16m - Calgary	WestJet	WS653 WS1550
from $182 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 $187 Find flight	16:00 Toronto Pearson International	00:56+1 день Seattle Seattle-Tacoma Intl	11h 56m layover 2h 24m - Ottawa 1h 2m - Washington D.C.	United Airlines	UA8453 UA4455 UA716

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on August 27, 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
08:25 — 10:45	08:25 — 10:45 AC541 Air Canada Toronto — Seattle	5h 20m	Find flight from$413
08:50 — 11:09	08:50 — 11:09 UA8270 United Airlines Toronto — Seattle	5h 19m	Find flight from$268
16:45 — 19:04	16:45 — 19:04 AS973 Alaska Airlines Toronto — Seattle	5h 19m	Find flight from$198
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$171
06:30 — 12:57	06:30 — 08:49 WS653 WestJet Toronto — Calgary 3h 16m stop 12:05 — 12:58 WS1550 WestJet Calgary — Seattle	9h 27m including layover	Find flight from$197
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$171
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$171
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$171
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$171
09:44 — 22:30	09:44 — 11:28 UA1268 United Airlines Toronto — Denver 9h 4m stop 20:32 — 22:30 UA2651 United Airlines Denver — Seattle	15h 46m including layover	Find flight from$180
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$171
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$200
12:10 — 00:59 +1 day	12:10 — 13:41 UA8670 United Airlines Toronto — Washington D.C. 8h 28m stop 22:09 — 00:59 UA2713 United Airlines Washington D.C. — Seattle	15h 49m including layover	Find flight from$187
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$171
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$171
14:30 — 00:59 +1 day	14:30 — 16:10 UA3637 United Airlines Toronto — Washington D.C. 5h 59m stop 22:09 — 00:59 UA2713 United Airlines Washington D.C. — Seattle	13h 29m including layover	Find flight from$180
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$172
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$171
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$171
18:20 — 08:01 +1 day	18:20 — 20:05 UA8163 United Airlines Toronto — Denver 10h stop 06:00 — 08:01 UA751 United Airlines Denver — Seattle	16h 41m including layover	Find flight from$186
19:47 — 00:59 +1 day	19:47 — 21:27 UA3466 United Airlines Toronto — Washington D.C. 42m stop 22:09 — 00:59 UA2713 United Airlines Washington D.C. — Seattle	8h 12m including layover	Find flight from$171
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$212
21:00 — 09:50 +1 day	21:00 — 22:05 UA4808 United Airlines Toronto — Chicago 9h 5m stop 07:10 — 09:50 UA1643 United Airlines Chicago — Seattle	15h 50m including layover	Find flight from$221
09:00 — 18:49	09:00 — 11:17 WS421 WestJet Toronto — Edmonton 3h 28m stop 14:45 — 15:40 WS152 WestJet Edmonton — Calgary 2h 5m stop 17:45 — 18:49 WS3614 WestJet Calgary — Seattle	12h 49m including layover	Find flight from$207
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$219
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$182
16:00 — 00:56 +1 day	16:00 — 17:05 UA8453 United Airlines Toronto — Ottawa 2h 24m stop 19:29 — 21:04 UA4455 United Airlines Ottawa — Washington D.C. 1h 2m stop 22:06 — 00:56 UA716 United Airlines Washington D.C. — Seattle	11h 56m including layover	Find flight from$187
19:20 — 09:21 +1 day	19:20 — 20:17 AC7712 Air Canada Toronto — Ottawa 1h 38m stop 21:55 — 00:15 AC347 Air Canada Ottawa — Vancouver 8h stop 08:15 — 09:21 AC8798 Air Canada Vancouver — Seattle	17h 1m including layover	Find flight from$187
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$219

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

*Departure and arrival times - local. Updated on August 27, 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 171 $), october (from 172 $), august (from 182 $).

The most expensive months are november (from 322 $), september (from 224 $), january (from 224 $).

What is the lowest airfare Toronto to Seattle?

The cheapest plane ticket found by our users is $171. 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

$171

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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 $ 187 . And the most expensive tickets are offered by WestJet airline - from $ 732.

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 $198.

AC - Air Canada

from $413

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AS - Alaska Airlines

from $198

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UA - United Airlines

from $268

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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 $171.

AC - Air Canada

from $187

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F8 - Freedom Airlines

from $224

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AS - Alaska Airlines

from $320

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PD - Porter Airlines

from $172

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SY - Sun Country Airlines

from $230

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UA - United Airlines

from $171

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WS - WestJet

from $182

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TS - Air Transat

from $215

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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 $172
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Pearson International-YYZ

from $171
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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.
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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.