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Cheap flights from Seattle to Ontario from C$ 147

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 Ontario departing on 1/2. 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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Find the cheapest flights from Seattle to Ontario

Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to Ontario that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Seattle to Ontario.

Cheap last-minute flights

Planning a quick getaway from Seattle to Ontario? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Ontario, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Seattle to Ontario

Find recent round-trip train or bus tickets from Seattle to Ontario.

All round-trip flight deals to Ontario

The cheapest plane tickets to Ontario found on KAYAK recently.
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
7:55 a.m. - 2:21 p.m.YYZ-SEA
9h 26m1 stop
C$ 348
Find Deal
Fri, 17 Jan - Fri, 24 Jan
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 358Alaska Airlines
Find Deal
Fri, 17 Jan - Tue, 21 Jan
3:15 p.m. - 5:58 a.m.SEA-YYZ
11h 43m2 stops
8:00 a.m. - 2:21 p.m.YYZ-SEA
9h 21m1 stop
C$ 364WestJet
Find Deal
Fri, 31 Jan - Mon, 3 Feb
3:15 p.m. - 6:00 a.m.SEA-YYZ
11h 45m2 stops
7:55 a.m. - 2:21 p.m.YYZ-SEA
9h 26m1 stop
C$ 367WestJet
Find Deal
Mon, 27 Jan - Wed, 12 Feb
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 416Air Canada
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Fri, 17 Jan - Fri, 24 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 422Air Canada
Find Deal
Fri, 17 Jan - Fri, 24 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 426United Airlines
Find Deal
Wed, 25 Dec - Tue, 14 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
6:55 p.m. - 12:55 a.m.YYZ-SEA
9h 00m1 stop
C$ 445United Airlines
Find Deal
Fri, 14 Feb - Mon, 17 Feb
10:18 p.m. - 10:45 p.m.SEA-YUL
21h 27m1 stop
7:00 a.m. - 11:26 p.m.YUL-SEA
19h 26m1 stop
C$ 809American Airlines
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Thu, 16 Jan - Sun, 19 Jan
11:42 p.m. - 12:20 p.m.SEA-YUL
9h 38m1 stop
2:20 p.m. - 11:07 p.m.YUL-SEA
11h 47m2 stops
C$ 857American Airlines
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Tue, 11 Mar - Wed, 12 Mar
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
C$ 147Alaska Airlines
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Sat, 1 Feb
9:57 a.m. - 5:20 p.m.SEA-YYZ
28h 23m2 stops
C$ 159
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Mon, 9 Dec
3:15 p.m. - 6:00 a.m.SEA-YYZ
11h 45m2 stops
C$ 170WestJet
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Wed, 11 Dec
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
C$ 179United Airlines
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Mon, 30 Dec
7:15 p.m. - 6:09 a.m.SEA-YYZ
7h 54m1 stop
C$ 186Air Canada
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Thu, 26 Dec
5:00 a.m. - 10:52 p.m.SEA-YYZ
14h 52m1 stop
C$ 193United Airlines
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Mon, 30 Dec
5:45 p.m. - 12:30 p.m.SEA-YYZ
15h 45m2 stops
C$ 194American Airlines
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Tue, 7 Jan
3:15 p.m. - 12:46 a.m.SEA-YOW
30h 31m1 stop
C$ 205WestJet
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Wed, 4 Dec
10:35 a.m. - 8:43 p.m.SEA-YUL
7h 08m1 stop
C$ 356Air Canada
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Thu, 16 Jan
12:31 a.m. - 4:38 p.m.SEA-YYZ
13h 07m2 stops
C$ 388American Airlines
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Tue, 31 Dec
5:28 p.m. - 9:47 p.m.SEA-YYZ
25h 19m1 stop
11:25 a.m. - 12:58 a.m.YYZ-SEA
16h 33m2 stops
C$ 726
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Tue, 26 Nov - Thu, 28 Nov
5:28 p.m. - 9:47 p.m.SEA-YYZ
25h 19m1 stop
7:25 p.m. - 1:19 p.m.YYZ-SEA
20h 54m1 stop
C$ 730
Find Deal
Tue, 26 Nov - Thu, 28 Nov
7:20 a.m. - 5:40 p.m.SEA-YYZ
7h 20m1 stop
7:00 a.m. - 12:46 p.m.YYZ-SEA
8h 46m1 stop
C$ 1,021WestJet
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Sun, 24 Nov - Fri, 29 Nov
7:11 p.m. - 3:02 p.m.SEA-YYZ
16h 51m1 stop
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 1,064United Airlines
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Fri, 22 Nov - Mon, 20 Jan
7:20 a.m. - 5:41 p.m.SEA-YYZ
7h 21m1 stop
7:00 a.m. - 12:46 p.m.YYZ-SEA
8h 46m1 stop
C$ 1,078WestJet
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Tue, 26 Nov - Thu, 28 Nov
7:11 p.m. - 3:02 p.m.SEA-YYZ
16h 51m1 stop
6:55 p.m. - 11:20 a.m.YYZ-SEA
19h 25m1 stop
C$ 1,085United Airlines
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Fri, 22 Nov - Mon, 20 Jan
1:16 a.m. - 1:00 p.m.SEA-YYZ
8h 44m1 stop
6:14 a.m. - 2:55 p.m.YYZ-SEA
11h 41m1 stop
C$ 1,089American Airlines
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Tue, 26 Nov - Thu, 28 Nov
12:25 a.m. - 10:51 a.m.SEA-YYZ
7h 26m1 stop
6:15 a.m. - 2:55 p.m.YYZ-SEA
11h 40m2 stops
C$ 1,103American Airlines
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Tue, 26 Nov - Thu, 28 Nov
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:00 p.m. - 9:50 a.m.YYZ-SEA
17h 50m1 stop
C$ 1,521Air Canada
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Sat, 23 Nov - Sun, 1 Dec
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:15 p.m. - 9:40 p.m.YYZ-SEA
5h 25mdirect
C$ 1,557Air Canada
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Sat, 23 Nov - Sun, 24 Nov
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 358Alaska Airlines
Find Deal
Fri, 17 Jan - Tue, 21 Jan
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 359Alaska Airlines
Find Deal
Fri, 17 Jan - Mon, 20 Jan
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 373Alaska Airlines
Find Deal
Sat, 1 Feb - Sun, 9 Feb
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 416Air Canada
Find Deal
Fri, 17 Jan - Fri, 24 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 422Air Canada
Find Deal
Fri, 17 Jan - Fri, 24 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 426United Airlines
Find Deal
Wed, 25 Dec - Tue, 14 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 450United Airlines
Find Deal
Thu, 9 Jan - Wed, 15 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 459Lufthansa
Find Deal
Thu, 9 Jan - Wed, 15 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 654
Find Deal
Mon, 10 Mar - Fri, 14 Mar
7:26 a.m. - 3:07 p.m.SEA-YYZ
4h 41mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 821
Find Deal
Sun, 5 Jan - Sun, 12 Jan

WestJet flights from Seattle to Region of Ontario

Our best WestJet deals on Seattle to Region of Ontario flight tickets
WestJet
31 Jan
SEA3:15 p.m.Seattle/Tacoma Intl
11h 43m
2 stops
YYZ5:58 a.m.Toronto Pearson Intl
3 Feb
YYZ8:00 a.m.Toronto Pearson Intl
9h 21m
1 stop
SEA2:21 p.m.Seattle/Tacoma Intl
WestJet
27 Jan
SEA3:15 p.m.Seattle/Tacoma Intl
11h 45m
2 stops
YYZ6:00 a.m.Toronto Pearson Intl
12 Feb
YYZ7:55 a.m.Toronto Pearson Intl
9h 26m
1 stop
SEA2:21 p.m.Seattle/Tacoma Intl
WestJet
25 Dec
SEA3:15 p.m.Seattle/Tacoma Intl
11h 45m
2 stops
YYZ6:00 a.m.Toronto Pearson Intl
14 Jan
YYZ7:55 a.m.Toronto Pearson Intl
9h 26m
1 stop
SEA2:21 p.m.Seattle/Tacoma Intl

Air Canada flights from Seattle to Region of Ontario

Our best Air Canada deals on Seattle to Region of Ontario flight tickets
Air Canada
17 Jan
SEA6:05 a.m.Seattle/Tacoma Intl
4h 45m
YYZ1:50 p.m.Toronto Pearson Intl
24 Jan
YYZ7:05 p.m.Toronto Pearson Intl
5h 25m
SEA9:30 p.m.Seattle/Tacoma Intl
Air Canada
17 Jan
SEA6:05 a.m.Seattle/Tacoma Intl
4h 45m
YYZ1:50 p.m.Toronto Pearson Intl
24 Jan
YYZ7:05 p.m.Toronto Pearson Intl
5h 25m
SEA9:30 p.m.Seattle/Tacoma Intl
Air Canada
12 Jan
SEA6:05 a.m.Seattle/Tacoma Intl
4h 45m
YYZ1:50 p.m.Toronto Pearson Intl
15 Jan
YYZ7:05 p.m.Toronto Pearson Intl
5h 25m
SEA9:30 p.m.Seattle/Tacoma Intl

See travel insights to Ontario from

How to get the cheapest flight ticket from Seattle to Region of Ontario

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 day to depart on your flight to Region of Ontario?

The cheapest day to depart from Seattle to Region of Ontario is on a Thursday. Travellers who choose to depart for Region of Ontario on a Thursday will often find tickets for as low as C$ 486. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 781.

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

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

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Region of Ontario flights?

You could potentially save up to 8% on your flight if you consider stops on a Seattle to Region of Ontario flight.

Cheap Seattle to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Region of Ontario

Best price found

C$ 147

Fastest flight time

4h 33m

Direct flights

Every day

Airports in Region of Ontario

5 airports
The best one-way flight to Region of Ontario from Seattle in the past 72 hours is C$ 147. The best round-trip flight deal from Seattle to Region of Ontario found on momondo in the last 72 hours is C$ 348.
The fastest flight from Seattle to Region of Ontario takes 4h 33m
Direct flights go from Seattle to Region of Ontario every day.
There are 5 airports near Region of Ontario: Ottawa (YOW), Montreal Pierre Elliott Trudeau Intl (YUL), Toronto Region of Waterloo Intl (YKF), Toronto Pearson Intl (YYZ), Hamilton (YHM)

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Ontario.

  • What documentation or ID do you need to fly to Ontario?

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

  • What is the most popular plane model from Seattle to Region of Ontario?


Best airlines flying from Seattle to Region of Ontario

Compare and see reviews for airlines that fly from Seattle to Region of Ontario with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 227Free CancellationRating
7.0
8,246 reviews
Search Air Canada flights
Alaska AirlinesPriceFrom C$ 379Free CancellationRating
8.0
9,464 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom C$ 485Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Seattle to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

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

Yes. All flights to Ontario from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Seattle to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Seattle to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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