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

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

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 Ottawa or Toronto, and flying into State of Washington, then you can expect flight times to average 8h 25m and 10h 10m, respectively.

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 40% 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.

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 July 2026, 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.

$167 Cheap Flights from Ontario to Washington in 2026

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

As of July 2026, there are 4 flights per day flying from Region of Ontario to State of Washington. The most common time of day flights depart is 6:00PM, with 85% of flights taking off in the evening.

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

28 flights are operational weekly from Region of Ontario to State of Washington as of July 2026. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.

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Find the cheapest flights from Ontario to Washington

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:30 am - 2:51 pm

YUL

PDX

10h 21m

1 stop

10:10 am - 8:51 pm

PDX

YUL

7h 41m

1 stop

$270Air Canada

Sat, Oct 17 - Sat, Oct 24

9:20 am - 7:11 pm

YUL

PDX

12h 51m

2 stops

3:30 pm - 7:10 am

PDX

YUL

12h 40m

2 stops

$273Air Canada

Sat, Aug 22 - Sat, Aug 29

6:15 am - 1:36 pm

YYZ

PDX

10h 21m

1 stop

12:35 am - 11:35 am

PDX

YYZ

8h 00m

1 stop

$292Delta

Tue, Aug 18 - Thu, Aug 20

6:00 am - 11:50 am

YYZ

PDX

8h 50m

1 stop

11:34 pm - 1:26 pm

PDX

YYZ

10h 52m

2 stops

$295American Airlines

Tue, Aug 18 - Fri, Aug 21

2:45 pm - 7:18 pm

YYZ

PDX

7h 33m

1 stop

8:25 am - 7:02 pm

PDX

YYZ

7h 37m

1 stop

$299United Airlines

Wed, Sep 9 - Wed, Sep 30

5:34 pm - 11:59 pm

YUL

PDX

9h 25m

1 stop

11:34 pm - 4:50 pm

PDX

YUL

14h 16m

1 stop

$299American Airlines

Tue, Aug 25 - Sat, Aug 29

11:40 am - 9:44 pm

YYZ

PDX

13h 04m

1 stop

11:20 pm - 1:34 pm

PDX

YYZ

11h 14m

1 stop

$302Delta

Tue, Aug 11 - Thu, Aug 13

3:00 pm - 10:03 pm

YYZ

PDX

10h 03m

1 stop

10:50 am - 9:32 pm

PDX

YYZ

7h 42m

1 stop

$304United Airlines

Sat, Sep 12 - Wed, Sep 23

10:20 pm - 6:45 pm

YYZ

SEA

23h 25m

2 stops

7:35 pm - 5:45 am

SEA

YYZ

7h 10m

1 stop

$336WestJet

Thu, Oct 1 - Mon, Oct 5

12:00 pm - 9:00 pm

YYZ

SEA

12h 00m

2 stops

10:30 am - 10:45 pm

SEA

YYZ

9h 15m

1 stop

$337WestJet

Fri, Aug 21 - Sun, Aug 30

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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

Oct 17

YUL7:30 amMontreal Pierre Elliott Trudeau Intl

10h 21m

1 stop

PDX2:51 pmPortland

Oct 24

PDX10:10 amPortland

7h 41m

1 stop

YUL8:51 pmMontreal Pierre Elliott Trudeau Intl

$270

Air Canada

Aug 22

YUL9:20 amMontreal Pierre Elliott Trudeau Intl

12h 51m

2 stops

PDX7:11 pmPortland

Aug 29

PDX3:30 pmPortland

12h 40m

2 stops

YUL7:10 amMontreal Pierre Elliott Trudeau Intl

$273

Air Canada

Aug 29

YUL9:50 amMontreal Pierre Elliott Trudeau Intl

12h 21m

2 stops

PDX7:11 pmPortland

Sep 5

PDX3:30 pmPortland

12h 40m

2 stops

YUL7:10 amMontreal Pierre Elliott Trudeau Intl

$281

United Airlines flights from Region of Ontario to State of Washington

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

United Airlines

Sep 9

YYZ2:45 pmToronto Pearson Intl

7h 33m

1 stop

PDX7:18 pmPortland

Sep 30

PDX8:25 amPortland

7h 37m

1 stop

YYZ7:02 pmToronto Pearson Intl

$299

United Airlines

Sep 12

YYZ3:00 pmToronto Pearson Intl

10h 03m

1 stop

PDX10:03 pmPortland

Sep 23

PDX10:50 amPortland

7h 42m

1 stop

YYZ9:32 pmToronto Pearson Intl

$304

United Airlines

Aug 29

YUL9:15 amMontreal Pierre Elliott Trudeau Intl

13h 55m

1 stop

PDX8:10 pmPortland

Sep 12

PDX11:09 pmPortland

11h 00m

1 stop

YUL1:09 pmMontreal Pierre Elliott Trudeau Intl

$308

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

Cheapest round-trip

MontrealPortland

YUL - PDX

YULPDX

Montreal Pierre Elliott Trudeau Intl

Sat 10/17

7:30 am-2:51 pm

1 stop10h 21m

Portland

Sat 10/24

10:10 am-8:51 pm

1 stop7h 41m

$270

MontrealPortland

YUL - PDX

YULPDX

Montreal Pierre Elliott Trudeau Intl

Sat 8/22

9:20 am-7:11 pm

2 stops12h 51m

Portland

Sat 8/29

3:30 pm-7:10 am

2 stops12h 40m

$273

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

Tue 8/18

6:15 am-1:36 pm

1 stop10h 21m

Portland

Thu 8/20

12:35 am-11:35 am

1 stop8h 00m

$292

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

Tue 8/18

6:00 am-11:50 am

1 stop8h 50m

Portland

Fri 8/21

11:34 pm-1:26 pm

2 stops10h 52m

$295

Quickest round-trip

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

Wed 9/9

2:45 pm-7:18 pm

1 stop7h 33m

Portland

Wed 9/30

8:25 am-7:02 pm

1 stop7h 37m

$299

MontrealPortland

YUL - PDX

YULPDX

Montreal Pierre Elliott Trudeau Intl

Tue 8/25

5:34 pm-11:59 pm

1 stop9h 25m

Portland

Sat 8/29

11:34 pm-4:50 pm

1 stop14h 16m

$299

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

Tue 8/11

11:40 am-9:44 pm

1 stop13h 04m

Portland

Thu 8/13

11:20 pm-1:34 pm

1 stop11h 14m

$302

TorontoPortland

YYZ - PDX

YYZPDX

Toronto Pearson Intl

Sat 9/12

3:00 pm-10:03 pm

1 stop10h 03m

Portland

Wed 9/23

10:50 am-9:32 pm

1 stop7h 42m

$304

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 10/1

10:20 pm-6:45 pm

2 stops23h 25m

Seattle/Tacoma Intl

Mon 10/5

7:35 pm-5:45 am

1 stop7h 10m

$336

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 8/21

12:00 pm-9:00 pm

2 stops12h 00m

Seattle/Tacoma Intl

Sun 8/30

10:30 am-10:45 pm

1 stop9h 15m

$337

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

Airlines

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 $255. 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 $285.

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 $432. When flying out on a Monday, 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 $793.

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 $450. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $617 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 from Ontario to 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 $347 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 $287 on momondo.

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

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

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

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	$265
Fastest flight time	5h 19m
Direct flights	Every day
Airports in State of Washington	96 airports

The best one-way flight to State of Washington from Region of Ontario in the past 72 hours is $265. The best round-trip flight deal from Region of Ontario to State of Washington found on momondo in the last 72 hours is $901.

The fastest flight from Region of Ontario to State of Washington takes 5h 19m

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

There are 96 airports in State of Washington. From Region of Ontario there are direct flights to Seattle/Tacoma Intl (SEA).

Search flight deals

Frequently asked questions about flying 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 July 2026, 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 54.10% of the total bookings. Other popular models include Boeing 777-300ER with 7.44%, De Havilland (Bombardier) DHC-8-400 Dash 8Q with 6.41%, and Boeing 737-900 Passenger/BBJ3 (winglets) with 5.13%.

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 3,411 reviews	Search WestJet flights
Alaska Airlines	PriceFrom $202	Free Cancellation	Rating 7.9 12,674 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom $213	Free Cancellation	Rating 7.1 11,359 reviews	Search Air Canada flights
United Airlines	PriceFrom $238	Free Cancellation	Rating 7.4 10,008 reviews	Search United Airlines flights
American Airlines	PriceFrom $277	Free Cancellation	Rating 7.1 11,823 reviews	Search American Airlines flights
Delta	PriceFrom $278	Free Cancellation	Rating 7.8 8,481 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.

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Cheap flights from Ontario to Washington from $167

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 9/25. 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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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

United Airlines flights from Region of Ontario to State of Washington

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

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

See travel insights to Washington from

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

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?

How far in advance should I book a flight from Ontario to Washington?

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

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

What is the cheapest airline that flies 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?

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

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

Frequently asked questions about flying from Ontario to 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?

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

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