What airlines fly to State of Washington?

Air Canada, Alaska Airlines and WestJet are the top three most popular airlines that fly to State of Washington from Region of Ontario according to our data. Air Canada is the first choice among our users, with 34% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 6 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

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

If you’re flying from a popular airport in Region of Ontario, such as Toronto or Hamilton, and flying into State of Washington, then you can expect flight times to average 8h 05m and 9h 19m, respectively.

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

WestJet, Air Canada, and American Airlines are the most popular carriers operating from Ontario to Washington

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

Prices for flights from Ontario to Washington were last updated today.

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

As of October 2025, there are 6 operators available to choose from for flights from Ontario to Washington.

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

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 Ontario to Washington.

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

The required travel and health documents for your Washington 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 Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$133 Cheap Flights from Ontario to Washington in 2025/26

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

58 flights are operational weekly from Region of Ontario to State of Washington as of October 2025. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.

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

As of October 2025, there are 8 flights per day flying from Region of Ontario to State of Washington. The most common time of day flights depart is 4:00PM, with 56% of flights taking off in the afternoon.

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Find the cheapest flights from Ontario to Washington

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:45 am - 2:20 pmYYZ-SEA

9h 35m1 stop

11:55 am - 11:39 pmSEA-YYZ

8h 44m2 stops

$210WestJet

Find Deal

Mon, Nov 24 - Sat, Dec 6

8:45 pm - 10:25 amYYZ-SEA

16h 40m1 stop

11:55 am - 6:58 amSEA-YYZ

16h 03m1 stop

$211WestJet

Find Deal

Fri, Oct 31 - Mon, Nov 3

5:45 am - 3:01 pmYOW-SEA

12h 16m2 stops

8:00 pm - 6:43 amSEA-YOW

7h 43m1 stop

$228Air Canada

Find Deal

Tue, Mar 3 - Mon, Mar 9

7:50 pm - 10:16 pmYYZ-SEA

5h 26mnonstop

8:10 am - 3:53 pmSEA-YYZ

4h 43mnonstop

$232Air Canada

Find Deal

Sun, Nov 9 - Tue, Nov 18

2:15 pm - 11:05 pmYOW-SEA

11h 50m2 stops

11:45 pm - 1:26 pmSEA-YOW

10h 41m1 stop

$234United Airlines

Find Deal

Sat, Feb 28 - Wed, Mar 4

4:45 pm - 7:18 pmYYZ-SEA

5h 33mnonstop

7:55 am - 3:35 pmSEA-YYZ

4h 40mnonstop

$239Alaska Airlines

Find Deal

Fri, Dec 5 - Mon, Dec 8

4:45 pm - 7:21 pmYYZ-SEA

5h 36mnonstop

7:55 am - 3:35 pmSEA-YYZ

4h 40mnonstop

$241Alaska Airlines

Find Deal

Tue, Jan 20 - Tue, Feb 10

11:52 am - 10:08 pmYYZ-PDX

13h 16m1 stop

10:10 pm - 11:10 amPDX-YYZ

10h 00m1 stop

$286Delta

Find Deal

Thu, Oct 23 - Mon, Oct 27

7:00 am - 11:41 amYYZ-PDX

7h 41m1 stop

11:59 pm - 9:58 amPDX-YYZ

6h 59m1 stop

$287United Airlines

Find Deal

Wed, Oct 15 - Wed, Oct 29

6:00 am - 12:06 pmYYZ-PDX

9h 06m1 stop

11:39 am - 10:55 pmPDX-YYZ

8h 16m1 stop

$289Delta

Find Deal

Tue, Oct 21 - Wed, Nov 5

WestJet flights from Region of Ontario to State of Washington

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

WestJet

Nov 24

YYZ7:45 amToronto Pearson Intl

9h 35m

1 stop

SEA2:20 pmSeattle/Tacoma Intl

Dec 6

SEA11:55 amSeattle/Tacoma Intl

8h 44m

2 stops

YYZ11:39 pmToronto Pearson Intl

$210

Find similar

WestJet

Oct 31

YYZ8:45 pmToronto Pearson Intl

16h 40m

1 stop

SEA10:25 amSeattle/Tacoma Intl

Nov 3

SEA11:55 amSeattle/Tacoma Intl

16h 03m

1 stop

YYZ6:58 amToronto Pearson Intl

$211

Find similar

WestJet

Dec 5

YYZ7:45 amToronto Pearson Intl

9h 35m

1 stop

SEA2:20 pmSeattle/Tacoma Intl

Dec 8

SEA11:55 amSeattle/Tacoma Intl

16h 03m

1 stop

YYZ6:58 amToronto Pearson Intl

$213

Find similar

Air Canada flights from Region of Ontario to State of Washington

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

Air Canada

Mar 3

YOW5:45 amOttawa

12h 16m

2 stops

SEA3:01 pmSeattle/Tacoma Intl

Mar 9

SEA8:00 pmSeattle/Tacoma Intl

7h 43m

1 stop

YOW6:43 amOttawa

$228

Find similar

Air Canada

Nov 9

YYZ7:50 pmToronto Pearson Intl

5h 26m

SEA10:16 pmSeattle/Tacoma Intl

Nov 18

SEA8:10 amSeattle/Tacoma Intl

4h 43m

YYZ3:53 pmToronto Pearson Intl

$232

Find similar

Air Canada

Mar 3

YOW5:45 amOttawa

12h 16m

2 stops

SEA3:01 pmSeattle/Tacoma Intl

Mar 3

SEA8:00 pmSeattle/Tacoma Intl

10h 23m

2 stops

YOW9:23 amOttawa

$235

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 11/24

7:45 am-2:20 pm

1 stop9h 35m

Seattle/Tacoma Intl

Sat 12/6

11:55 am-11:39 pm

2 stops8h 44m

$210

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 10/31

8:45 pm-10:25 am

1 stop16h 40m

Seattle/Tacoma Intl

Mon 11/3

11:55 am-6:58 am

1 stop16h 03m

$211

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 3/3

5:45 am-3:01 pm

2 stops12h 16m

Seattle/Tacoma Intl

Mon 3/9

8:00 pm-6:43 am

1 stop7h 43m

$228

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 11/9

7:50 pm-10:16 pm

Nonstop5h 26m

Seattle/Tacoma Intl

Tue 11/18

8:10 am-3:53 pm

Nonstop4h 43m

$232

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sat 2/28

2:15 pm-11:05 pm

2 stops11h 50m

Seattle/Tacoma Intl

Wed 3/4

11:45 pm-1:26 pm

1 stop10h 41m

$234

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 12/5

4:45 pm-7:18 pm

Nonstop5h 33m

Seattle/Tacoma Intl

Mon 12/8

7:55 am-3:35 pm

Nonstop4h 40m

$239

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 1/20

4:45 pm-7:21 pm

Nonstop5h 36m

Seattle/Tacoma Intl

Tue 2/10

7:55 am-3:35 pm

Nonstop4h 40m

$241

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

Thu 10/23

11:52 am-10:08 pm

1 stop13h 16m

Portland

Mon 10/27

10:10 pm-11:10 am

1 stop10h 00m

$286

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

Wed 10/15

7:00 am-11:41 am

1 stop7h 41m

Portland

Wed 10/29

11:59 pm-9:58 am

1 stop6h 59m

$287

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

Tue 10/21

6:00 am-12:06 pm

1 stop9h 06m

Portland

Wed 11/5

11:39 am-10:55 pm

1 stop8h 16m

$289

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 Region of Ontario to State of Washington

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

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Other information

What is the cheapest month to fly to State of Washington?

The month of February is, on average, the cheapest month to fly to State of Washington from Region of Ontario, with most prices found around $263. If you aren’t able to travel to State of Washington 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 $266.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Region of Ontario to State of Washington is on a Thursday. Travelers who choose to depart for State of Washington on a Thursday will often find tickets for as low as $431. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Region of Ontario to State of Washington for around $649.

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

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $264. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $545 on average. Flights to State of Washington from Region of Ontario in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Ontario to Washington flight route?

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

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $356 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Region of Ontario for as low as $306 on momondo.

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

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

You could potentially save up to 48% on your flight if you consider stops on a Region of Ontario to State of Washington flight.

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

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

Best Price Found	$213
Fastest flight time	5h 15m
Direct flights	Every day
Airports in State of Washington	1 airport

The best one-way flight to State of Washington from Region of Ontario in the past 72 hours is $213. The best round-trip flight deal from Region of Ontario to State of Washington found on momondo in the last 72 hours is $254.

The fastest flight from Region of Ontario to State of Washington takes 5h 15m

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

There is 1 airport near State of Washington: Seattle/Tacoma Intl (SEA)

Search flight deals

When did momondo last update prices for flights from Ontario to Washington?
Prices for flights from Ontario to Washington were last updated today.
How many operators does momondo search for flights from Ontario to Washington?
As of October 2025, there are 6 operators available to choose from for flights from Ontario to Washington.
How old do you have to be to fly from Ontario to Washington?
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 Ontario to Washington.
What documentation or ID do you need to fly to Washington?
The required travel and health documents for your Washington 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 Washington. 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 Region of Ontario to State of Washington?
Based on momondo bookings for flights between Region of Ontario and State of Washington, the leading plane model is Airbus A220-300, making up 26.91% of the total bookings. Other popular models include Airbus A320-100/200 with 23.09%, Boeing 737 MAX 8 with 22.98%, and Boeing 737-900 Passenger/BBJ3 (winglets) with 7.52%.

Best airlines flying from Region of Ontario to State of Washington

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

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom $193	Free Cancellation	Rating 7.2 3,114 reviews	Search WestJet flights
Alaska Airlines	PriceFrom $225	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom $238	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
United Airlines	PriceFrom $240	Free Cancellation	Rating 7.4 8,946 reviews	Search United Airlines flights
American Airlines	PriceFrom $277	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $289	Free Cancellation	Rating 7.9 7,970 reviews	Search Delta flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Washington for you.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Washington.

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

Price alerts on flights to Washington from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your State of Washington 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.

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Cheap flights from Ontario to Washington from $133

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Washington departing on 10/22. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from Ontario to Washington

Cheap round-trip flights

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WestJet flights from Region of Ontario to State of Washington

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

Air Canada flights from Region of Ontario to State of Washington

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

momondo Fare Finder

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

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

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 month to fly to State of Washington?

What is the cheapest day to depart on your flight to State of Washington?

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

What is the cheapest Ontario to Washington flight route?

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

How far in advance should I book a flight to State of Washington?

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

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

You could potentially save up to 48% on your flight if you consider stops on a Region of Ontario to State of Washington flight.

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

WestJet, Air Canada, and American Airlines are the most popular carriers operating from Ontario to Washington

What airlines fly to State of Washington?

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

As of October 2025, there are 8 flights per day flying from Region of Ontario to State of Washington. The most common time of day flights depart is 4:00PM, with 56% of flights taking off in the afternoon.

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

58 flights are operational weekly from Region of Ontario to State of Washington as of October 2025. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.

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

If you’re flying from a popular airport in Region of Ontario, such as Toronto or Hamilton, and flying into State of Washington, then you can expect flight times to average 8h 05m and 9h 19m, respectively.

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

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

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

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

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

What is the most popular plane model from Region of Ontario to State of Washington?

Best airlines flying from Region of Ontario to State of Washington

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

Why use momondo?

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

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

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

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

An easier way to manage your State of Washington 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 Washington

Popular cities in Washington

Popular flights according to clicks in the last 7 days on momondo