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

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

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 36% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 5 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 Ottawa or Hamilton, and flying into State of Washington, then you can expect flight times to average 8h 25m and 8h 52m, respectively.

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 September 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.

$155 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 September 2026, there are 1 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?

13 flights are operational weekly from Region of Ontario to State of Washington as of September 2026. The most popular departure day for this route is Tue, with 31% 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.

1:20 pm - 6:45 pmYOW Ottawa-SEA Seattle/Tacoma Intl

8h 25m1 stop Calgary

10:30 am - 12:20 amSEA Seattle/Tacoma Intl-YOW Ottawa

10h 50m2 stops Calgary Toronto Pearson Intl

$290WestJet

Wed, Sep 30 - Wed, Oct 7

8:15 pm - 9:40 amYOW Ottawa-SEA Seattle/Tacoma Intl

16h 25m1 stop Calgary

7:35 pm - 5:35 amSEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

$296WestJet

Fri, Oct 16 - Fri, Oct 23

7:30 am - 2:41 pmYUL Montreal Pierre Elliott Trudeau Intl-PDX Portland

10h 11m1 stop Vancouver Intl

10:00 am - 8:33 pmPDX Portland-YUL Montreal Pierre Elliott Trudeau Intl

7h 33m1 stop Vancouver Intl

$303Air Canada

Thu, Nov 26 - Wed, Dec 2

9:45 am - 3:56 pmYUL Montreal Pierre Elliott Trudeau Intl-PDX Portland

9h 11m1 stop Chicago O'Hare Intl

3:30 pm - 7:10 amPDX Portland-YUL Montreal Pierre Elliott Trudeau Intl

12h 40m2 stops Vancouver Intl Edmonton

$304Multiple Airlines

Sat, Sep 19 - Sat, Sep 26

9:45 am - 5:49 pmYUL Montreal Pierre Elliott Trudeau Intl-PDX Portland

11h 04m2 stops Chicago O'Hare Intl Denver Intl

7:45 pm - 9:55 amPDX Portland-YUL Montreal Pierre Elliott Trudeau Intl

11h 10m2 stops Vancouver Intl Ottawa

$304Multiple Airlines

Sat, Sep 19 - Sat, Sep 26

8:30 am - 6:31 pmYUL Montreal Pierre Elliott Trudeau Intl-PDX Portland

13h 01m2 stops Calgary Vancouver Intl

10:00 am - 8:33 pmPDX Portland-YUL Montreal Pierre Elliott Trudeau Intl

7h 33m1 stop Vancouver Intl

$309Air Canada

Fri, Nov 27 - Wed, Dec 2

6:35 pm - 10:10 amYUL Montreal Pierre Elliott Trudeau Intl-PDX Portland

18h 35m1 stop San Francisco

2:27 pm - 10:40 amPDX Portland-YUL Montreal Pierre Elliott Trudeau Intl

17h 13m1 stop Chicago O'Hare Intl

$310United Airlines

Tue, Oct 13 - Sat, Oct 17

9:45 am - 10:23 pmYUL Montreal Pierre Elliott Trudeau Intl-PDX Portland

15h 38m1 stop Chicago O'Hare Intl

7:33 pm - 8:16 amPDX Portland-YUL Montreal Pierre Elliott Trudeau Intl

9h 43m1 stop San Francisco

$314United Airlines

Tue, Sep 29 - Tue, Oct 6

7:29 am - 12:22 pmYYZ Toronto Pearson Intl-PDX Portland

7h 53m1 stop Chicago O'Hare Intl

9:50 pm - 11:10 amPDX Portland-YYZ Toronto Pearson Intl

10h 20m1 stop Charlotte Douglas

$320American Airlines

Thu, Oct 29 - Mon, Nov 2

12:30 pm - 7:41 pmYUL Montreal Pierre Elliott Trudeau Intl-PDX Portland

10h 11m1 stop Chicago O'Hare Intl

10:55 pm - 11:44 amPDX Portland-YUL Montreal Pierre Elliott Trudeau Intl

9h 49m1 stop Chicago O'Hare Intl

$323American Airlines

Tue, Oct 13 - Sat, Oct 17

Cheap last minute flights

Enter your travel dates to find the best prices.

5:50 pm - 10:38 pmYYZ Toronto Pearson Intl-PDX Portland

7h 48m1 stop Salt Lake City

10:57 pm - 10:23 amPDX Portland-YYZ Toronto Pearson Intl

8h 26m1 stop Atlanta Hartsfield-Jackson

$348Delta

Sat, Sep 5 - Tue, Sep 15

11:00 am - 8:59 pmYYZ Toronto Pearson Intl-PDX Portland

12h 59m2 stops Chicago O'Hare Intl San Francisco

10:43 am - 11:59 pmPDX Portland-YYZ Toronto Pearson Intl

10h 16m2 stops Denver Intl Chicago O'Hare Intl

$362United Airlines

Thu, Sep 3 - Wed, Sep 30

5:50 pm - 10:38 pmYYZ Toronto Pearson Intl-PDX Portland

7h 48m1 stop Salt Lake City

10:57 pm - 10:23 amPDX Portland-YYZ Toronto Pearson Intl

8h 26m1 stop Atlanta Hartsfield-Jackson

$362Delta

Sat, Sep 5 - Tue, Sep 15

6:30 am - 12:00 pmYYZ Toronto Pearson Intl-PDX Portland

8h 30m1 stop San Francisco

10:43 am - 11:59 pmPDX Portland-YYZ Toronto Pearson Intl

10h 16m2 stops Denver Intl Chicago O'Hare Intl

$362United Airlines

Thu, Sep 3 - Wed, Sep 30

11:10 pm - 9:40 amYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

13h 30m2 stops Winnipeg Calgary

7:35 pm - 11:55 amSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

13h 20m1 stop Calgary

$388WestJet

Mon, Sep 7 - Sat, Sep 12

5:27 pm - 10:52 pmYYZ Toronto Pearson Intl-PDX Portland

8h 25m1 stop Chicago O'Hare Intl

2:30 pm - 5:10 amPDX Portland-YYZ Toronto Pearson Intl

11h 40m2 stops Calgary Edmonton

$392Multiple Airlines

Fri, Sep 4 - Tue, Sep 8

5:10 pm - 9:31 amYYZ Toronto Pearson Intl-PDX Portland

19h 21m2 stops Winnipeg Vancouver Intl

3:30 pm - 6:34 amPDX Portland-YYZ Toronto Pearson Intl

12h 04m2 stops Vancouver Intl Edmonton

$417Air Canada

Sat, Sep 5 - Sat, Sep 12

7:30 am - 2:51 pmYUL Montreal Pierre Elliott Trudeau Intl-PDX Portland

10h 21m1 stop Vancouver Intl

7:45 pm - 9:55 amPDX Portland-YUL Montreal Pierre Elliott Trudeau Intl

11h 10m2 stops Vancouver Intl Ottawa

$430Air Canada

Sun, Sep 6 - Sat, Sep 19

10:25 pm - 9:40 amYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

14h 15m1 stop Calgary

7:35 pm - 11:55 amSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

13h 20m1 stop Calgary

$461WestJet

Mon, Sep 7 - Sat, Sep 12

4:55 pm - 11:55 pmYYZ Toronto Pearson Intl-PDX Portland

10h 00m1 stop Seattle/Tacoma Intl

2:30 pm - 5:10 amPDX Portland-YYZ Toronto Pearson Intl

11h 40m2 stops Calgary Edmonton

$503Multiple Airlines

Fri, Sep 4 - Tue, Sep 8

Cheap direct flights

Enter your travel dates to find the best prices.

6:45 pm - 9:04 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 19mnonstop

8:00 am - 3:41 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 41mnonstop

$408Air Canada

Wed, Sep 23 - Tue, Sep 29

6:45 pm - 9:04 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 19mnonstop

7:45 am - 3:25 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 40mnonstop

$408Air Canada

Wed, Oct 21 - Wed, Oct 28

4:55 pm - 7:26 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 31mnonstop

8:20 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 45mnonstop

$408Alaska Airlines

Sat, Oct 24 - Sat, Oct 31

6:25 pm - 8:59 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mnonstop

7:45 am - 3:25 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 40mnonstop

$408Air Canada

Sat, Dec 5 - Tue, Dec 8

4:55 pm - 7:26 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 31mnonstop

8:20 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 45mnonstop

$415Alaska Airlines

Sat, Oct 24 - Thu, Oct 29

5:15 pm - 7:45 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 30mnonstop

8:31 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 34mnonstop

$423Alaska Airlines

Thu, Nov 19 - Mon, Nov 23

7:20 pm - 9:39 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 19mnonstop

7:45 am - 3:25 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 40mnonstop

$571United Airlines

Sat, Oct 24 - Sat, Oct 31

6:45 pm - 9:04 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 19mnonstop

7:52 am - 3:45 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 53mnonstop

$609Multiple Airlines

Tue, Sep 22 - Thu, Sep 24

6:45 pm - 9:04 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 19mnonstop

8:00 am - 3:41 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 41mnonstop

$658Multiple Airlines

Tue, Oct 13 - Sun, Oct 18

7:15 pm - 9:34 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 19mnonstop

8:00 am - 3:41 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 41mnonstop

$673United Airlines

Sat, Oct 17 - Sat, Oct 24

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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

WestJet

Sep 10

YOW1:20 pmOttawa

8h 25m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

Sep 16

SEA7:35 pmSeattle/Tacoma Intl

7h 00m

1 stop

YOW5:35 amOttawa

$253

WestJet

Sep 10

YOW6:55 amOttawa

14h 50m

2 stops

SEA6:45 pmSeattle/Tacoma Intl

Sep 16

SEA7:35 pmSeattle/Tacoma Intl

7h 00m

1 stop

YOW5:35 amOttawa

$277

WestJet

Sep 30

YOW1:20 pmOttawa

8h 25m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

Oct 7

SEA10:30 amSeattle/Tacoma Intl

10h 50m

2 stops

YOW12:20 amOttawa

$290

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

Nov 26

YUL7:30 amMontreal Pierre Elliott Trudeau Intl

10h 11m

1 stop

PDX2:41 pmPortland

Dec 2

PDX10:00 amPortland

7h 33m

1 stop

YUL8:33 pmMontreal Pierre Elliott Trudeau Intl

$303

Air Canada

Nov 27

YUL8:30 amMontreal Pierre Elliott Trudeau Intl

13h 01m

2 stops

PDX6:31 pmPortland

Dec 2

PDX10:00 amPortland

7h 33m

1 stop

YUL8:33 pmMontreal Pierre Elliott Trudeau Intl

$309

Air Canada

Oct 23

YYZ10:55 amToronto Pearson Intl

11h 16m

2 stops

PDX7:11 pmPortland

Oct 27

PDX3:15 pmPortland

12h 01m

2 stops

YYZ6:16 amToronto Pearson Intl

$315

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

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Wed 9/30

1:20 pm-6:45 pm

1 stop8h 25m

Seattle/Tacoma Intl

Wed 10/7

10:30 am-12:20 am

2 stops10h 50m

$290

OttawaSeattle

YOW Ottawa - SEA Seattle/Tacoma Intl

YOWSEA

Ottawa

Fri 10/16

8:15 pm-9:40 am

1 stop16h 25m

Seattle/Tacoma Intl

Fri 10/23

7:35 pm-5:35 am

1 stop7h 00m

$296

Quickest round-trip

MontrealPortland

YUL Montreal Pierre Elliott Trudeau Intl - PDX Portland

YULPDX

Montreal Pierre Elliott Trudeau Intl

Thu 11/26

7:30 am-2:41 pm

1 stop10h 11m

Portland

Wed 12/2

10:00 am-8:33 pm

1 stop7h 33m

$303

MontrealPortland

YUL Montreal Pierre Elliott Trudeau Intl - PDX Portland

YULPDX

Montreal Pierre Elliott Trudeau Intl

Sat 9/19

9:45 am-3:56 pm

1 stop9h 11m

Portland

Sat 9/26

3:30 pm-7:10 am

2 stops12h 40m

$304

MontrealPortland

YUL Montreal Pierre Elliott Trudeau Intl - PDX Portland

YULPDX

Montreal Pierre Elliott Trudeau Intl

Sat 9/19

9:45 am-5:49 pm

2 stops11h 04m

Portland

Sat 9/26

7:45 pm-9:55 am

2 stops11h 10m

$304

MontrealPortland

YUL Montreal Pierre Elliott Trudeau Intl - PDX Portland

YULPDX

Montreal Pierre Elliott Trudeau Intl

Fri 11/27

8:30 am-6:31 pm

2 stops13h 01m

Portland

Wed 12/2

10:00 am-8:33 pm

1 stop7h 33m

$309

MontrealPortland

YUL Montreal Pierre Elliott Trudeau Intl - PDX Portland

YULPDX

Montreal Pierre Elliott Trudeau Intl

Tue 10/13

6:35 pm-10:10 am

1 stop18h 35m

Portland

Sat 10/17

2:27 pm-10:40 am

1 stop17h 13m

$310

MontrealPortland

YUL Montreal Pierre Elliott Trudeau Intl - PDX Portland

YULPDX

Montreal Pierre Elliott Trudeau Intl

Tue 9/29

9:45 am-10:23 pm

1 stop15h 38m

Portland

Tue 10/6

7:33 pm-8:16 am

1 stop9h 43m

$314

TorontoPortland

YYZ Toronto Pearson Intl - PDX Portland

YYZPDX

Toronto Pearson Intl

Thu 10/29

7:29 am-12:22 pm

1 stop7h 53m

Portland

Mon 11/2

9:50 pm-11:10 am

1 stop10h 20m

$320

MontrealPortland

YUL Montreal Pierre Elliott Trudeau Intl - PDX Portland

YULPDX

Montreal Pierre Elliott Trudeau Intl

Tue 10/13

12:30 pm-7:41 pm

1 stop10h 11m

Portland

Sat 10/17

10:55 pm-11:44 am

1 stop9h 49m

$323

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 $282.

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 Friday. Travelers who choose to depart for State of Washington on a Friday will often find tickets for as low as $443. 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 $804.

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 $452. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $666 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 $367 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 $295 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	$155
Fastest flight time	5h 18m
Direct flights	Wed, Thu, Fri, Sat and Sun
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 $155. The best round-trip flight deal from Region of Ontario to State of Washington found on momondo in the last 72 hours is $290.

The fastest flight from Region of Ontario to State of Washington takes 5h 18m

Direct flights go from Region of Ontario to State of Washington on Wednesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Alaska Airlines.

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

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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 September 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 18.67% of the total bookings. Other popular models include Boeing 777-300ER with 14.67%, De Havilland (Bombardier) DHC-8-400 Dash 8Q with 11.11%, and Boeing 737-900 Passenger/BBJ3 (winglets) with 8.89%.

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 $197	Free Cancellation	Rating 7.2 3,446 reviews	Search WestJet flights
Alaska Airlines	PriceFrom $202	Free Cancellation	Rating 7.9 12,866 reviews	Search Alaska Airlines flights
Delta	PriceFrom $209	Free Cancellation	Rating 7.8 8,544 reviews	Search Delta flights
Air Canada	PriceFrom $213	Free Cancellation	Rating 7.1 11,573 reviews	Search Air Canada flights
United Airlines	PriceFrom $219	Free Cancellation	Rating 7.4 10,159 reviews	Search United Airlines 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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Flights to Las Vegasfrom $50

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Flights to Fort Lauderdalefrom $50

Flights to Atlantafrom $38

Flights to Dallasfrom $53

Cheap flights from Ontario to Washington from $155

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 9/29. 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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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.

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

Popular cities in Washington

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

Region of Ontario flight routes

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year

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