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Cheap flights from Seattle to Ontario from $105

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 2/1. 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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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 am - 3:05 pmSEA-YYZ
4h 38mnonstop
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
$257Alaska Airlines
Find Deal
Fri, Jan 17 - Tue, Jan 21
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
$267Alaska Airlines
Find Deal
Sun, Jan 19 - Wed, Jan 22
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$304Air Canada
Find Deal
Sat, Mar 8 - Wed, Mar 12
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$305Air Canada
Find Deal
Tue, Mar 4 - Fri, Mar 7
12:50 am - 1:41 pmSEA-YYZ
9h 51m1 stop
6:15 pm - 12:21 amYYZ-SEA
9h 06m1 stop
$316Delta
Find Deal
Mon, Dec 9 - Thu, Dec 12
11:55 pm - 3:21 pmSEA-YYZ
12h 26m2 stops
7:45 pm - 10:10 pmYYZ-SEA
5h 25mnonstop
$319United Airlines
Find Deal
Tue, Dec 10 - Thu, Dec 12
7:00 am - 7:45 pmSEA-YYZ
9h 45m1 stop
12:25 pm - 10:00 pmYYZ-SEA
12h 35m2 stops
$324United Airlines
Find Deal
Sun, Jan 19 - Sun, Feb 2
5:30 am - 3:59 pmSEA-YYZ
7h 29m1 stop
5:04 pm - 12:23 amYYZ-SEA
10h 19m1 stop
$339Delta
Find Deal
Thu, Dec 12 - Sun, Dec 15
5:23 am - 10:39 pmSEA-YYZ
14h 16m1 stop
5:14 pm - 11:09 pmYYZ-SEA
8h 55m1 stop
$447American Airlines
Find Deal
Sat, Dec 14 - Sun, Dec 15
10:56 pm - 10:19 amSEA-YYZ
8h 23m1 stop
6:10 am - 1:06 pmYYZ-SEA
9h 56m1 stop
$477American Airlines
Find Deal
Fri, Jan 3 - Fri, Jan 10
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
$105Alaska Airlines
Find Deal
Sat, Feb 1
7:22 am - 2:55 pmSEA-YYZ
4h 33mnonstop
$114Alaska Airlines
Find Deal
Wed, Dec 11
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$128United Airlines
Find Deal
Mon, Dec 30
1:30 pm - 10:52 pmSEA-YYZ
6h 22m1 stop
$132Delta
Find Deal
Sat, Feb 1
7:15 pm - 6:32 amSEA-YYZ
8h 17m1 stop
$133Air Canada
Find Deal
Mon, Dec 30
11:55 pm - 9:58 amSEA-YYZ
7h 03m1 stop
$138United Airlines
Find Deal
Tue, Dec 10
5:45 am - 6:43 pmSEA-YTZ
9h 58m2 stops
$139Air Canada
Find Deal
Thu, Dec 12
10:56 pm - 10:19 amSEA-YYZ
8h 23m1 stop
$142American Airlines
Find Deal
Tue, Dec 31
8:50 am - 11:34 pmSEA-YYZ
11h 44m1 stop
$154Delta
Find Deal
Sat, Dec 14
12:15 am - 12:30 pmSEA-YYZ
9h 15m1 stop
$238American Airlines
Find Deal
Mon, Dec 16
11:54 am - 6:18 amSEA-YYZ
15h 24m2 stops
9:05 pm - 2:21 pmYYZ-SEA
20h 16m1 stop
Sat, Nov 23 - Mon, Nov 25
9:35 pm - 10:36 pmSEA-YYZ
22h 01m2 stops
9:25 am - 12:57 amYYZ-SEA
18h 32m1 stop
Thu, Nov 21 - Sat, Nov 23
1:16 am - 4:19 pmSEA-YYZ
12h 03m1 stop
6:15 am - 12:40 pmYYZ-SEA
9h 25m1 stop
$780American Airlines
Find Deal
Mon, Nov 25 - Thu, Nov 28
12:25 am - 5:35 pmSEA-YYZ
14h 10m1 stop
6:15 am - 2:55 pmYYZ-SEA
11h 40m2 stops
$790American Airlines
Find Deal
Mon, Nov 25 - Thu, Nov 28
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:15 pm - 9:40 pmYYZ-SEA
5h 25mnonstop
$1,115Air Canada
Find Deal
Thu, Nov 21 - Sat, Nov 23
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:15 pm - 9:40 pmYYZ-SEA
5h 25mnonstop
$1,155Air Canada
Find Deal
Sat, Nov 23 - Mon, Nov 25
11:55 pm - 12:30 pmSEA-YYZ
9h 35m1 stop
12:25 pm - 10:07 pmYYZ-SEA
12h 42m2 stops
$1,180United Airlines
Find Deal
Sat, Nov 23 - Mon, Nov 25
7:11 pm - 8:50 amSEA-YYZ
10h 39m2 stops
12:25 pm - 10:07 pmYYZ-SEA
12h 42m2 stops
$1,185United Airlines
Find Deal
Sat, Nov 23 - Mon, Nov 25
12:55 am - 3:32 pmSEA-YUL
11h 37m2 stops
6:00 am - 4:47 pmYUL-SEA
13h 47m2 stops
$1,716Delta
Find Deal
Sat, Nov 23 - Sat, Nov 30
12:55 am - 1:41 pmSEA-YYZ
9h 46m1 stop
10:05 am - 8:00 pmYYZ-SEA
12h 55m2 stops
$1,967Delta
Find Deal
Fri, Nov 22 - Mon, Nov 25
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
$257Alaska Airlines
Find Deal
Fri, Jan 17 - Tue, Jan 21
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
$267Alaska Airlines
Find Deal
Sun, Jan 19 - Wed, Jan 22
7:22 am - 2:55 pmSEA-YYZ
4h 33mnonstop
4:20 pm - 6:39 pmYYZ-SEA
5h 19mnonstop
$276Alaska Airlines
Find Deal
Tue, Dec 10 - Thu, Dec 12
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$304Air Canada
Find Deal
Sat, Mar 8 - Wed, Mar 12
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$305Air Canada
Find Deal
Tue, Mar 4 - Fri, Mar 7
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
6:55 pm - 9:20 pmYYZ-SEA
5h 25mnonstop
$481Air Canada
Find Deal
Fri, Dec 13 - Thu, Dec 19
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$835United Airlines
Find Deal
Wed, Dec 25 - Fri, Jan 3
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$853United Airlines
Find Deal
Wed, Dec 25 - Fri, Jan 3
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
6:55 pm - 9:20 pmYYZ-SEA
5h 25mnonstop
$1,868United Airlines
Find Deal
Sat, Dec 28 - Sat, Dec 28
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$2,458United Airlines
Find Deal
Mon, Dec 23 - Sat, Jan 4

Air Canada flights from Seattle to Region of Ontario

Our best Air Canada deals on Seattle to Region of Ontario flight tickets
Air Canada
Mar 8
SEA6:05 amSeattle/Tacoma Intl
4h 45m
YYZ1:50 pmToronto Pearson Intl
Mar 12
YYZ7:05 pmToronto Pearson Intl
5h 25m
SEA9:30 pmSeattle/Tacoma Intl
Air Canada
Mar 4
SEA6:05 amSeattle/Tacoma Intl
4h 45m
YYZ1:50 pmToronto Pearson Intl
Mar 7
YYZ7:05 pmToronto Pearson Intl
5h 25m
SEA9:30 pmSeattle/Tacoma Intl
Air Canada
Feb 1
SEA7:05 pmSeattle/Tacoma Intl
8h 04m
1 stop
YYZ6:09 amToronto Pearson Intl
Feb 9
YYZ7:05 pmToronto Pearson Intl
5h 25m
SEA9:30 pmSeattle/Tacoma Intl

American Airlines flights from Seattle to Region of Ontario

Our best American Airlines deals on Seattle to Region of Ontario flight tickets
American Airlines
Dec 14
SEA5:23 amSeattle/Tacoma Intl
14h 16m
1 stop
YYZ10:39 pmToronto Pearson Intl
Dec 15
YYZ5:14 pmToronto Pearson Intl
8h 55m
1 stop
SEA11:09 pmSeattle/Tacoma Intl
American Airlines
Jan 3
SEA10:56 pmSeattle/Tacoma Intl
8h 23m
1 stop
YYZ10:19 amToronto Pearson Intl
Jan 10
YYZ6:10 amToronto Pearson Intl
9h 56m
1 stop
SEA1:06 pmSeattle/Tacoma Intl
American Airlines
Jan 3
SEA10:56 pmSeattle/Tacoma Intl
8h 23m
1 stop
YYZ10:19 amToronto Pearson Intl
Jan 10
YYZ6:10 amToronto Pearson Intl
11h 46m
1 stop
SEA2:56 pmSeattle/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 Seattle to Region of Ontario flight route?

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

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

No. A direct flight is the cheapest option for a flight between Seattle to Region of Ontario.

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

$105

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 $105. The best round-trip flight deal from Seattle to Region of Ontario found on momondo in the last 72 hours is $257.
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), Toronto Island (YTZ)

  • 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 refreshed on a daily basis.

  • 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 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 Seattle/Tacoma Intl Airport to Ontario.

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

    The travel and health documents you'll need for your trip to Ontario may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • 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
United AirlinesPriceFrom $172Free CancellationRating
7.4
9,171 reviews
Search United Airlines flights
Air CanadaPriceFrom $178Free CancellationRating
7.0
8,237 reviews
Search Air Canada flights
WestJetPriceFrom $235Free CancellationRating
7.3
2,811 reviews
Search WestJet flights
Alaska AirlinesPriceFrom $248Free CancellationRating
8.0
9,461 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $464Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $474Free CancellationRating
8.0
8,756 reviews
Search Delta flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Ontario. Millions of users trust and use momondo every year so you are in good hands.

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 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 Ontario from Seattle.

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

Of course. momondo tracks the price of Seattle to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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