How many flights depart from State of Washington to Region of Ontario on average per week?

21 flights are operational weekly from State of Washington to Region of Ontario as of March 2026. The most popular departure day for this route is Wed, with 29% of flights per week taking off on this day.

What airlines fly to Region of Ontario?

Alaska Airlines, Air Canada and WestJet are the top three most popular airlines that fly to Region of Ontario from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 5 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

How many flights depart from State of Washington to Region of Ontario on average per day?

As of March 2026, there are 3 flights per day flying from State of Washington to Region of Ontario. The most common time of day flights depart is 7:00AM, with 96% of flights taking off at noon.

How long is the flight from State of Washington to Region of Ontario?

Average flight duration from State of Washington to Region of Ontario depends on which airport you fly into and out of. Flying from Seattle to Toronto Pearson Intl Airport is 4h 40m on average, while flying from Spokane to Toronto Pearson Intl Airport is 5h 58m on average. Toronto Pearson Intl Airport is the most popular airport in Region of Ontario.

What is the cheapest airline that flies from Washington to Ontario?

Alaska Airlines, Delta, and United Airlines are the most popular carriers operating from Washington to Ontario

When did momondo last update prices for flights from Washington to Ontario?

Prices for flights from Washington to Ontario refresh daily.

How many operators does momondo search for flights from Washington to Ontario?

As of March 2026, there are 6 operators available to choose from for flights from Washington to Ontario.

How old do you have to be to fly from Washington to Ontario?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Ontario.

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

The required travel and health documents for your Ontario trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$109 Cheap Flights from Washington to Ontario in 2026

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Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 am - 3:54 pm

SEA

YYZ

4h 54mnonstop

12:30 am - 10:05 am

YYZ

SEA

12h 35m

2 stops

$230Air Canada

Sat, Apr 25 - Fri, May 1

8:00 am - 3:54 pm

SEA

YYZ

4h 54mnonstop

12:30 am - 10:05 am

YYZ

SEA

12h 35m

2 stops

$236Air Canada

Sat, Apr 25 - Fri, May 1

2:55 pm - 1:38 am

SEA

YYZ

7h 43m

1 stop

7:45 am - 2:20 pm

YYZ

SEA

9h 35m

2 stops

$241Air Canada

Tue, May 5 - Tue, May 12

7:55 am - 3:45 pm

SEA

YYZ

4h 50mnonstop

4:55 pm - 7:23 pm

YYZ

SEA

5h 28mnonstop

$250Alaska Airlines

Sat, Apr 25 - Sat, May 2

11:59 pm - 10:40 am

PDX

YUL

7h 41m

1 stop

2:20 pm - 8:42 pm

YUL

PDX

9h 22m

1 stop

$338United Airlines

Mon, Apr 13 - Tue, Apr 14

6:15 am - 6:34 pm

PDX

YYZ

9h 19m

1 stop

2:24 pm - 9:48 pm

YYZ

PDX

10h 24m

1 stop

$344Delta

Tue, Jul 7 - Thu, Jul 9

10:40 pm - 9:54 am

PDX

YYZ

8h 14m

1 stop

5:15 pm - 12:02 am

YYZ

PDX

9h 47m

1 stop

$345United Airlines

Mon, Jul 6 - Mon, Jul 13

3:20 pm - 3:13 pm

SEA

YUL

20h 53m

1 stop

7:30 am - 2:31 pm

YUL

SEA

10h 01m

1 stop

$358WestJet

Sat, Apr 18 - Sat, Apr 25

3:10 pm - 5:29 am

SEA

YKF

11h 19m

1 stop

6:20 am - 2:19 pm

YKF

SEA

10h 59m

1 stop

$361WestJet

Fri, Apr 17 - Tue, Apr 21

6:30 am - 8:43 am

PSC

YUL

23h 13m

2 stops

9:28 am - 7:44 pm

YUL

PSC

13h 16m

2 stops

$677Delta

Sat, Sep 12 - Sat, Sep 26

United Airlines flights from State of Washington to Region of Ontario

Our best United Airlines deals on State of Washington to Region of Ontario flight tickets

United Airlines

Apr 28

SEA10:55 pmSeattle/Tacoma Intl

9h 48m

1 stop

YYZ11:43 amToronto Pearson Intl

Apr 29

YYZ2:30 pmToronto Pearson Intl

9h 23m

1 stop

SEA8:53 pmSeattle/Tacoma Intl

$315

United Airlines

Apr 13

PDX11:59 pmPortland

7h 41m

1 stop

YUL10:40 amMontreal Pierre Elliott Trudeau Intl

Apr 14

YUL2:20 pmMontreal Pierre Elliott Trudeau Intl

9h 22m

1 stop

PDX8:42 pmPortland

$338

United Airlines

Jul 6

PDX10:40 pmPortland

8h 14m

1 stop

YYZ9:54 amToronto Pearson Intl

Jul 13

YYZ5:15 pmToronto Pearson Intl

9h 47m

1 stop

PDX12:02 amPortland

$345

Air Canada flights from State of Washington to Region of Ontario

Our best Air Canada deals on State of Washington to Region of Ontario flight tickets

Air Canada

Apr 25

SEA8:00 amSeattle/Tacoma Intl

4h 54m

YYZ3:54 pmToronto Pearson Intl

May 1

YYZ12:30 amToronto Pearson Intl

12h 35m

2 stops

SEA10:05 amSeattle/Tacoma Intl

$230

Air Canada

Apr 25

SEA8:00 amSeattle/Tacoma Intl

4h 54m

YYZ3:54 pmToronto Pearson Intl

May 1

YYZ12:30 amToronto Pearson Intl

12h 35m

2 stops

SEA10:05 amSeattle/Tacoma Intl

$236

Air Canada

May 5

SEA2:55 pmSeattle/Tacoma Intl

7h 43m

1 stop

YYZ1:38 amToronto Pearson Intl

May 12

YYZ7:45 amToronto Pearson Intl

9h 35m

2 stops

SEA2:20 pmSeattle/Tacoma Intl

$241

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 4/25

8:00 am-3:54 pm

Nonstop4h 54m

Toronto Pearson Intl

Fri 5/1

12:30 am-10:05 am

2 stops12h 35m

$230

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 4/25

8:00 am-3:54 pm

Nonstop4h 54m

Toronto Pearson Intl

Fri 5/1

12:30 am-10:05 am

2 stops12h 35m

$236

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 5/5

2:55 pm-1:38 am

1 stop7h 43m

Toronto Pearson Intl

Tue 5/12

7:45 am-2:20 pm

2 stops9h 35m

$241

Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 4/25

7:55 am-3:45 pm

Nonstop4h 50m

Toronto Pearson Intl

Sat 5/2

4:55 pm-7:23 pm

Nonstop5h 28m

$250

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Mon 4/13

11:59 pm-10:40 am

1 stop7h 41m

Montreal Pierre Elliott Trudeau Intl

Tue 4/14

2:20 pm-8:42 pm

1 stop9h 22m

$338

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 7/7

6:15 am-6:34 pm

1 stop9h 19m

Toronto Pearson Intl

Thu 7/9

2:24 pm-9:48 pm

1 stop10h 24m

$344

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 7/6

10:40 pm-9:54 am

1 stop8h 14m

Toronto Pearson Intl

Mon 7/13

5:15 pm-12:02 am

1 stop9h 47m

$345

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 4/18

3:20 pm-3:13 pm

1 stop20h 53m

Montreal Pierre Elliott Trudeau Intl

Sat 4/25

7:30 am-2:31 pm

1 stop10h 01m

$358

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 4/17

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Tue 4/21

6:20 am-2:19 pm

1 stop10h 59m

$361

PascoMontreal

PSC - YUL

PSCYUL

Pasco Tri Cities

Sat 9/12

6:30 am-8:43 am

2 stops23h 13m

Montreal Pierre Elliott Trudeau Intl

Sat 9/26

9:28 am-7:44 pm

2 stops13h 16m

$677

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington 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

Prices

Airlines

Other information

What is the cheapest month to fly to Region of Ontario?

The month of January is, on average, the cheapest month to fly to Region of Ontario from State of Washington, with most prices found around $250. If you aren’t able to travel during the month of January, then book flights to Region of Ontario from State of Washington during November instead. Flights to Region of Ontario in November, while not as cheap as those in January, still average around $274.

What is the cheapest day to depart on your flight to Region of Ontario?

According to our data, Tuesday is the cheapest day to fly to Region of Ontario from State of Washington. The lowest ticket price found for a Tuesday departure recently was $506. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from State of Washington to Region of Ontario on a Sunday will generally be more expensive and average around $697. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Washington to Ontario flight route?

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

How far in advance should I book a flight to Region of Ontario?

You are more likely to see cheaper flights to Region of Ontario from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $380 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from State of Washington for as low as $242 on momondo.

What cabin class options are available on Washington to Ontario flights?

There are 4 cabin classes available to choose from on Washington 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 State of Washington to Region of Ontario flights?

You could potentially save up to 11% on your flight if you consider stops on a State of Washington to Region of Ontario flight.

Cheap State of Washington to Region of Ontario flight deals and tips

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

Best Price Found	$239
Fastest flight time	4h 40m
Direct flights	Every day
Airports in Region of Ontario	123 airports

The best one-way flight to Region of Ontario from State of Washington in the past 72 hours is $239. The best round-trip flight deal from State of Washington to Region of Ontario found on momondo in the last 72 hours is $461.

The fastest flight from State of Washington to Region of Ontario takes 4h 40m

Direct flights go from State of Washington to Region of Ontario every day.

There are 123 airports in Region of Ontario. From State of Washington there are direct flights to Toronto Pearson Intl (YYZ).

Search flight deals

When did momondo last update prices for flights from Washington to Ontario?
Prices for flights from Washington to Ontario refresh daily.
How many operators does momondo search for flights from Washington to Ontario?
As of March 2026, there are 6 operators available to choose from for flights from Washington to Ontario.
How old do you have to be to fly from Washington to Ontario?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Ontario.
What documentation or ID do you need to fly to Ontario?
The required travel and health documents for your Ontario trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from State of Washington to Region of Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from State of Washington to Region of Ontario is Airbus A330-900neo (18.35% of total bookings). The next most popular plane models are Airbus A320-100/200 (17.99%), Airbus A330-200 (13.67%), and Boeing 777-300ER (6.47%).

Best airlines flying from State of Washington to Region of Ontario

Compare and see reviews for airlines that fly from State of Washington to Region of Ontario with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $138	Free Cancellation	Rating 7.9 8,326 reviews	Search Delta flights
Air Canada	PriceFrom $165	Free Cancellation	Rating 7.1 10,840 reviews	Search Air Canada flights
WestJet	PriceFrom $222	Free Cancellation	Rating 7.2 3,301 reviews	Search WestJet flights
United Airlines	PriceFrom $238	Free Cancellation	Rating 7.4 9,477 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $252	Free Cancellation	Rating 7.9 12,109 reviews	Search Alaska Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Washington.

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

Flights from Washington to Ontario 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 Washington to Ontario?

Once all potential Washington 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 Washington to Ontario right now. Can momondo alert me if prices change?

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

An easier way to manage your Region of Ontario trip

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Popular cities in Ontario

Flights to Torontofrom $155

Flights to Vancouverfrom $150

Flights to Montrealfrom $197

Flights to Calgaryfrom $219

Flights to Ottawafrom $244

Flights to Halifaxfrom $251

Flights to Winnipegfrom $264

Flights to Québec Cityfrom $291

Flights to Kelownafrom $271

Flights to Saskatoonfrom $282

Flights to St. John'sfrom $364

Flights to Reginafrom $336

Cheap flights from Washington to Ontario from $109

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Ontario departing on 4/25. 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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United Airlines flights from State of Washington to Region of Ontario

Our best United Airlines deals on State of Washington to Region of Ontario flight tickets

Air Canada flights from State of Washington to Region of Ontario

Our best Air Canada deals on State of Washington to Region of Ontario flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Ontario that are best for you.

See travel insights to Ontario from

How to get the cheapest flight ticket from State of Washington to Region of Ontario

What is the cheapest month to fly to Region of Ontario?

What is the cheapest day to depart on your flight to Region of Ontario?

What is the cheapest Washington to Ontario flight route?

How far in advance should I book a flight to Region of Ontario?

What cabin class options are available on Washington to Ontario flights?

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

What is the cheapest airline that flies from Washington to Ontario?

What airlines fly to Region of Ontario?

How many flights depart from State of Washington to Region of Ontario on average per day?

How many flights depart from State of Washington to Region of Ontario on average per week?

How long is the flight from State of Washington to Region of Ontario?

Cheap State of Washington to Region of Ontario flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Region of Ontario

Best airlines flying from State of Washington to Region of Ontario

Compare and see reviews for airlines that fly from State of Washington to Region of Ontario with momondo

Why use momondo?

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ontario

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