Question 1

How often are flights from Toronto to Seattle delayed?

Accepted Answer

Historically, on average around 21% of flights between Toronto and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 164 minutes.

Question 2

Which airline has the best punctuality record on Toronto to Seattle flights?

Accepted Answer

According to our data, Alaska Airlines has had the least delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

Question 3

What is the cheapest airline that flies from Toronto to Seattle/Tacoma Intl?

Accepted Answer

WestJet and United Airlines are the most popular carriers operating from Toronto to Seattle/Tacoma Intl

Question 4

What is the most punctual flight time for Toronto to Seattle flights?

Accepted Answer

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Question 5

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

Question 6

How have Toronto to Seattle flight prices changed over time?

Accepted Answer

As of December 2025, prices for Toronto to Seattle flights are approximately 40% cheaper when compared to flights at the same time last year.

Question 7

How far in advance should I book a flight to Seattle?

Accepted Answer

You are more likely to see cheaper flights to Seattle from Toronto when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 481 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Toronto for as low as C$ 408 on momondo.

Question 8

Which airport is the most popular layover for flights between Toronto and Seattle?

Accepted Answer

Calgary (YYC) was the most common stop: 66% of momondo users choosing one-stop flights on this route connected there.

Question 9

How many flights depart from Toronto to Seattle on average per day?

Accepted Answer

The number of flights available between Toronto and Seattle is 2 per day as of December 2025. The most frequent departure time is 4:00p.m., with 64% of daily flights leaving in the afternoon.

Question 10

What is the cheapest day to depart on your flight to Seattle?

Accepted Answer

Our data shows that Thursday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 538. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around C$ 792. These prices are subject to change though, so be sure to set up a Price Alert for flights to Seattle.

Question 11

How many flights depart from Toronto to Seattle on average per week?

Accepted Answer

As of December 2025, 19 flights take off from Toronto and land in Seattle each week. The most common flight departure day for this route is Wed, with 37% of weekly flights taking off on this day.

Question 12

Can stopping save me money on Toronto to Seattle flights?

Accepted Answer

No. A direct flight is the cheapest option for a flight between Toronto to Seattle.

Question 13

Which layover airport has the shortest travel time from Toronto to Seattle?

Accepted Answer

Flights connecting via Minneapolis (MSP) have the shortest average one-way travel time: 7h 18m.

Question 14

Which layover airport has the shortest connection time from Toronto to Seattle?

Accepted Answer

Chicago (ORD) has the shortest average layover time for this route: 0h 51m.

Question 15

Which airlines fly to Seattle?

Accepted Answer

Alaska Airlines, Air Canada and WestJet are the top three most popular airlines that fly to Seattle from Toronto according to our data. Alaska Airlines is the first choice among our users, with 39% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Question 16

What is the cheapest time of day to depart on your flight to Seattle?

Accepted Answer

Our most recent data shows that the best time of day to fly to Seattle is in the evening. Flights from Toronto to Seattle during this time can be as low as C$ 433. Flights in the morning are often more expensive with an average ticket price of C$ 846.

Question 17

What cabin class options are available on Toronto to Seattle/Tacoma Intl flights?

Accepted Answer

There are 4 cabin classes available to choose from on Toronto to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 18

How long does it take to fly to Seattle?

Accepted Answer

Flight times from Toronto to Seattle vary, but if you’re flying out of Toronto and flying into Seattle (one of the most popular routes), then the duration is 8h 29m on average. Another popular route from Toronto to Seattle is flying from Hamilton to Seattle, which will take roughly 10h 08m. Keep in mind that layovers or delays could extend your travel time.

Question 19

Which layover airport offers the lowest fares from Toronto to Seattle?

Accepted Answer

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 410.

Question 20

What is the cheapest Toronto to Seattle/Tacoma Intl flight route?

Accepted Answer

Fly from Toronto Pearson Intl to Seattle/Tacoma Intl for the best Toronto - Seattle/Tacoma Intl flight prices

Question 21

What is the typical price of a round-trip flight between Toronto and Seattle?

Accepted Answer

Prices are currently low for flights on this route.Typical prices usually range from C$ 449 to C$ 773.
The lowest price recently found on this route was C$ 273.

Question 22

What is the cheapest month to fly to Seattle?

Accepted Answer

If you aren’t able to travel to Seattle during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 398.

Question 23

When did momondo last update prices for flights from Toronto to Seattle/Tacoma Intl Airport?

Accepted Answer

Prices for flights from Toronto to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

Question 24

How many operators does momondo search for flights from Toronto to Seattle/Tacoma Intl Airport?

Accepted Answer

As of December 2025, there are 6 operators available to choose from for flights from Toronto to Seattle/Tacoma Intl Airport.

Question 25

How old do you have to be to fly from Toronto to Seattle/Tacoma Intl Airport?

Accepted Answer

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Toronto to Seattle/Tacoma Intl Airport.

Question 26

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

Accepted Answer

The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best price found	C$ 252
Fastest flight time	5h 20m
Direct flights	Every day
Airports in Seattle	1 airport

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom C$ 182	Free Cancellation	Rating 7.2 3,204 reviews	Search WestJet flights
Alaska Airlines	PriceFrom C$ 283	Free Cancellation	Rating 8.0 11,477 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom C$ 336	Free Cancellation	Rating 7.1 10,534 reviews	Search Air Canada flights
Delta	PriceFrom C$ 342	Free Cancellation	Rating 7.9 8,005 reviews	Search Delta flights
United Airlines	PriceFrom C$ 364	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom C$ 410	Free Cancellation	Rating 7.8 2,820 reviews	Search Hawaiian Airlines flights

Cheap flights from Toronto to Seattle from C$ 196

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Toronto to Seattle departing on 22/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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