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Cheap flights from Seattle to Toronto from C$ 265

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Toronto departing on 10/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
5:50 a.m. - 1:15 p.m.
SEA
-
YTZ
28h 25m
2 stops
Air Canada Logo
12:30 p.m. - 10:42 p.m.
YTZ
-
SEA
13h 12m
2 stops
C$ 638Air Canada
Tue, 4 Aug - Tue, 11 Aug
Multiple Airlines Logo
12:16 a.m. - 2:25 p.m.
SEA
-
YTZ
11h 09m
1 stop
Multiple Airlines Logo
10:05 a.m. - 3:41 p.m.
YTZ
-
SEA
8h 36m
1 stop
C$ 696Multiple Airlines
Tue, 15 Sep - Wed, 30 Sep
Air Canada Logo
10:45 a.m. - 1:15 p.m.
SEA
-
YTZ
23h 30m
2 stops
Air Canada Logo
8:30 a.m. - 10:07 a.m.
YTZ
-
SEA
28h 37m
2 stops
C$ 702Air Canada
Wed, 5 Aug - Wed, 12 Aug
Multiple Airlines Logo
5:46 p.m. - 9:40 a.m.
SEA
-
YTZ
12h 54m
1 stop
Multiple Airlines Logo
1:40 p.m. - 9:59 p.m.
YTZ
-
SEA
11h 19m
1 stop
C$ 705Multiple Airlines
Tue, 13 Oct - Tue, 20 Oct
Multiple Airlines Logo
5:51 p.m. - 9:40 a.m.
SEA
-
YTZ
12h 49m
1 stop
Multiple Airlines Logo
8:40 p.m. - 8:30 a.m.
YTZ
-
SEA
14h 50m
1 stop
C$ 706Multiple Airlines
Tue, 8 Sep - Tue, 15 Sep
Multiple Airlines Logo
6:00 a.m. - 6:00 p.m.
SEA
-
YTZ
9h 00m
1 stop
Multiple Airlines Logo
8:40 p.m. - 8:30 a.m.
YTZ
-
SEA
14h 50m
1 stop
C$ 713Multiple Airlines
Wed, 2 Sep - Mon, 7 Sep
Multiple Airlines Logo
12:14 a.m. - 2:25 p.m.
SEA
-
YTZ
11h 11m
1 stop
Multiple Airlines Logo
8:40 p.m. - 8:34 a.m.
YTZ
-
SEA
14h 54m
1 stop
C$ 722Multiple Airlines
Wed, 14 Oct - Tue, 20 Oct
Multiple Airlines Logo
6:00 a.m. - 6:00 p.m.
SEA
-
YTZ
9h 00m
1 stop
Multiple Airlines Logo
8:40 p.m. - 8:30 a.m.
YTZ
-
SEA
14h 50m
1 stop
C$ 725Multiple Airlines
Wed, 9 Sep - Wed, 9 Sep
Multiple Airlines Logo
12:16 a.m. - 2:25 p.m.
SEA
-
YTZ
11h 09m
1 stop
Multiple Airlines Logo
8:40 p.m. - 8:30 a.m.
YTZ
-
SEA
14h 50m
1 stop
C$ 727Multiple Airlines
Thu, 17 Sep - Mon, 21 Sep
Air Canada Logo
5:40 a.m. - 1:23 p.m.
SEA
-
YTZ
28h 43m
2 stops
Air Canada Logo
6:45 a.m. - 2:37 p.m.
YTZ
-
SEA
10h 52m
2 stops
C$ 729Air Canada
Sat, 24 Oct - Tue, 27 Oct

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United Airlines flights from Seattle to Toronto Island Airport

Our best United Airlines deals on Seattle to Toronto Island Airport flight tickets
United Airlines
19 Sep
SEA11:00 p.m.Seattle/Tacoma Intl
8h 07m
1 stop
YTZ10:07 a.m.Toronto Island
22 Sep
YTZ7:25 p.m.Toronto Island
17h 11m
1 stop
SEA9:36 a.m.Seattle/Tacoma Intl
C$ 811
United Airlines
19 Sep
SEA11:00 p.m.Seattle/Tacoma Intl
8h 07m
1 stop
YTZ10:07 a.m.Toronto Island
22 Sep
YTZ7:25 p.m.Toronto Island
19h 19m
2 stops
SEA11:44 a.m.Seattle/Tacoma Intl
C$ 825
United Airlines
28 Aug
SEA11:00 p.m.Seattle/Tacoma Intl
8h 07m
1 stop
YTZ10:07 a.m.Toronto Island
1 Sep
YTZ12:15 p.m.Toronto Island
9h 52m
1 stop
SEA7:07 p.m.Seattle/Tacoma Intl
C$ 841

Air Canada flights from Seattle to Toronto Island Airport

Our best Air Canada deals on Seattle to Toronto Island Airport flight tickets
Air Canada
4 Aug
SEA5:50 a.m.Seattle/Tacoma Intl
28h 25m
2 stops
YTZ1:15 p.m.Toronto Island
11 Aug
YTZ12:30 p.m.Toronto Island
13h 12m
2 stops
SEA10:42 p.m.Seattle/Tacoma Intl
C$ 638
Air Canada
5 Aug
SEA10:45 a.m.Seattle/Tacoma Intl
23h 30m
2 stops
YTZ1:15 p.m.Toronto Island
12 Aug
YTZ8:30 a.m.Toronto Island
28h 37m
2 stops
SEA10:07 a.m.Seattle/Tacoma Intl
C$ 702
Air Canada
24 Oct
SEA5:40 a.m.Seattle/Tacoma Intl
28h 43m
2 stops
YTZ1:23 p.m.Toronto Island
27 Oct
YTZ6:45 a.m.Toronto Island
10h 52m
2 stops
SEA2:37 p.m.Seattle/Tacoma Intl
C$ 729

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Toronto Island Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 22 June 2026.
Use the filters below to find and compare flights from Seattle to Toronto Island Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 4/8

5:50 a.m.-1:15 p.m.

2 stops28h 25m

Toronto Island

Tue 11/8

12:30 p.m.-10:42 p.m.

2 stops13h 12m

C$ 638
Quickest round-trip

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 15/9

12:16 a.m.-2:25 p.m.

1 stop11h 09m

Toronto Island

Wed 30/9

10:05 a.m.-3:41 p.m.

1 stop8h 36m

C$ 696

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 5/8

10:45 a.m.-1:15 p.m.

2 stops23h 30m

Toronto Island

Wed 12/8

8:30 a.m.-10:07 a.m.

2 stops28h 37m

C$ 702

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 13/10

5:46 p.m.-9:40 a.m.

1 stop12h 54m

Toronto Island

Tue 20/10

1:40 p.m.-9:59 p.m.

1 stop11h 19m

C$ 705

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 8/9

5:51 p.m.-9:40 a.m.

1 stop12h 49m

Toronto Island

Tue 15/9

8:40 p.m.-8:30 a.m.

1 stop14h 50m

C$ 706

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 2/9

6:00 a.m.-6:00 p.m.

1 stop9h 00m

Toronto Island

Mon 7/9

8:40 p.m.-8:30 a.m.

1 stop14h 50m

C$ 713

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 14/10

12:14 a.m.-2:25 p.m.

1 stop11h 11m

Toronto Island

Tue 20/10

8:40 p.m.-8:34 a.m.

1 stop14h 54m

C$ 722

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 9/9

6:00 a.m.-6:00 p.m.

1 stop9h 00m

Toronto Island

Wed 9/9

8:40 p.m.-8:30 a.m.

1 stop14h 50m

C$ 725

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 17/9

12:16 a.m.-2:25 p.m.

1 stop11h 09m

Toronto Island

Mon 21/9

8:40 p.m.-8:30 a.m.

1 stop14h 50m

C$ 727

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 24/10

5:40 a.m.-1:23 p.m.

2 stops28h 43m

Toronto Island

Tue 27/10

6:45 a.m.-2:37 p.m.

2 stops10h 52m

C$ 729

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Toronto from

How to get the cheapest flight ticket from Seattle to Toronto Island Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

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

When to book flights from Seattle to Toronto Island Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Toronto Island Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Toronto Island Airport (SEA to YTZ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Toronto Island Airport

Fastest flight time

7h 55m

Direct flights

None
The fastest flight from Seattle to Toronto Island Airport takes 7h 55m
There are no direct flights from Seattle to Toronto Island Airport. There are no popular flight routes from Seattle to Toronto Island Airport.
Search flight deals

Frequently asked questions about flying from Seattle to Toronto Island Airport

  • How far is Seattle/Tacoma Intl to Toronto Island by plane?

    Toronto Island is 3323.2 km away from Seattle/Tacoma Intl. Flights usually cover this in 7h 55m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Toronto Island Airport are updated daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Toronto Island Airport.

  • What documentation or ID do you need to fly to Toronto Island Airport?

    The travel and health documents required for your trip to Toronto Island 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 Toronto Island Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Apsley

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Toronto?

Finding the right flight to Toronto from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Toronto quick and easy, saving you time and money.

Can I find flights from Seattle to Toronto with flexible booking policies on momondo?

Flights from Seattle to Toronto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Toronto?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Toronto from Seattle.

I’m not ready to book a flight from Seattle to Toronto right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Toronto now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Toronto and let you know when they change.

An easier way to manage your Toronto Island Airport trip

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