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Ontario

$120+ Cheap flights from Portland (PDX) to Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Portland to Ontario

Cheapest flights from Portland to Ontario
Explore the most affordable flight options available from Portland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/146:00 am
PDX
-
YYZ
1 stop6h 35m
Alaska Airlines
Fri 3/204:45 pm
YYZ
-
PDX
1 stop7h 53m
Alaska Airlines
Deal found 1/25$327
This Air Canada deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/77:05 pm
PDX
-
YYZ
1 stop8h 42m
Air Canada
Sat 4/48:00 am
YYZ
-
PDX
1 stop9h 40m
Air Canada
Deal found 1/25$329
This Air Canada deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:45 pm
PDX
-
YYZ
1 stop7h 53m
Air Canada
Fri 5/88:00 am
YYZ
-
PDX
2 stops9h 45m
Air Canada
Deal found 1/25$335
This Air Canada deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/243:15 pm
PDX
-
YYZ
2 stops11h 19m
Air Canada
Mon 4/2710:00 am
YYZ
-
PDX
2 stops11h 30m
Air Canada
Deal found 1/25$343
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1910:38 pm
PDX
-
YYZ
1 stop10h 10m
United Airlines
Tue 2/248:45 am
YYZ
-
PDX
1 stop13h 04m
United Airlines
Deal found 1/26$344
This Air Canada deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/267:05 pm
PDX
-
YYZ
1 stop8h 42m
Air Canada
Wed 4/86:15 am
YYZ
-
PDX
2 stops11h 25m
Air Canada
Deal found 1/27$346
This Air Canada deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/193:15 pm
PDX
-
YYZ
2 stops12h 33m
Air Canada
Tue 2/248:00 am
YYZ
-
PDX
2 stops13h 30m
Air Canada
Deal found 1/25$348
This Air Canada deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:45 pm
PDX
-
YYZ
1 stop7h 15m
Air Canada
Thu 8/208:00 am
YYZ
-
PDX
2 stops9h 51m
Air Canada
Deal found 1/25$353
This Air Canada deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:05 pm
PDX
-
YTZ
2 stops13h 37m
Air Canada
Wed 3/188:30 pm
YTZ
-
PDX
2 stops21h 10m
Air Canada
Deal found 1/25$364
This Air Canada deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:50 am
PDX
-
YUL
1 stop8h 10m
Air Canada
Wed 3/49:00 am
YUL
-
PDX
1 stop8h 40m
Air Canada
Deal found 1/25$390
This Air Canada deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/263:15 pm
PDX
-
YUL
2 stops12h 58m
Air Canada
Wed 3/47:30 am
YUL
-
PDX
1 stop10h 10m
Air Canada
Deal found 1/25$395
This American Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/249:44 pm
PDX
-
YUL
1 stop22h 00m
American Airlines
Tue 3/33:45 pm
YUL
-
PDX
1 stop11h 32m
American Airlines
Deal found 1/26$399

Find flight deals from Portland to Ontario

Keep the following information in mind while searching for Portland to Ontario flight deals. Data was last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$327
(Orbitz)

One-way from

$120
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$361
Provider with most accurate pricing for Portland-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Toronto (YTO) flights.
Search Deals
From Portland to Ontario
Search Deals
One-way flight from Portland to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($59 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
Use the filters below to find and compare flights from Portland to Ontario that are best for you.

Fly from

Portland

Fly to

Ontario

Route

Depart

Return

Price

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 3/14

6:00 am-3:35 pm

1 stop6h 35m

Toronto Pearson Intl

Fri 3/20

4:45 pm-9:38 pm

1 stop7h 53m

$327

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 3/5

7:05 pm-5:59 am

1 stop7h 54m

Toronto Pearson Intl

Tue 3/17

8:00 am-2:40 pm

1 stop9h 40m

$329

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 3/7

7:05 pm-6:47 am

1 stop8h 42m

Toronto Pearson Intl

Sat 4/4

8:00 am-2:40 pm

2 stops9h 40m

$338

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 3/12

7:05 pm-5:59 am

1 stop7h 54m

Toronto Pearson Intl

Sat 4/11

8:00 am-2:40 pm

2 stops9h 40m

$338

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 4/15

3:15 pm-5:34 am

2 stops11h 19m

Toronto Pearson Intl

Mon 4/20

8:15 am-2:40 pm

2 stops9h 25m

$340

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 3/26

7:05 pm-6:47 am

1 stop8h 42m

Toronto Pearson Intl

Wed 4/8

8:00 am-2:40 pm

1 stop9h 40m

$340

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 4/24

3:15 pm-5:34 am

2 stops11h 19m

Toronto Pearson Intl

Mon 4/27

10:00 am-6:30 pm

2 stops11h 30m

$343

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 2/28

11:59 pm-2:01 pm

1 stop11h 02m

Toronto Pearson Intl

Wed 3/4

2:57 pm-8:43 pm

1 stop8h 46m

$344

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 3/31

5:00 am-9:32 pm

1 stop13h 32m

Toronto Pearson Intl

Thu 4/2

10:45 am-10:54 pm

1 stop15h 09m

$344

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 3/28

6:00 am-3:35 pm

1 stop6h 35m

Toronto Pearson Intl

Wed 4/1

4:55 pm-9:38 pm

1 stop7h 43m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 60 results
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Best time to book a flight from Portland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Ontario

What is the cheapest month to book a flight from Portland to Region of Ontario?

Currently, July is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of $144). Flying from Portland to Region of Ontario in February is currently the most expensive (average of $371). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated January 27, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Portland to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,119 reviews
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,206 reviews
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,198 reviews
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
WestJet
7.2
Good
3,251 reviews
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,660 reviews
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Portland to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Ontario?

    Located just 6.0 mi from the city center, Portland (PDX) is the airport most travelers will use when flying to Ontario from Portland.

  • How long is the flight from Portland to Region of Ontario?

    Alaska Airlines, Air Canada, and Delta can get you from Portland to Region of Ontario in just under 6h 35m. Your travel time can differ by up to 2h 01m. There are 2090 mi between Portland and Region of Ontario. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Portland to Region of Ontario one-way?

    $90 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on WestJet and United Airlines, with prices starting from $105 and $117, respectively.

  • What are the most popular routes from Portland to Region of Ontario?

    While some choose either Portland - Montreal Pierre Elliott Trudeau Intl or Portland - Toronto Island, Portland - Toronto Pearson Intl is the most popular route from Portland to Region of Ontario.

  • Can I find deals for flights from Portland to Ontario that include hotel bookings?

    Yes. In addition to deals on Portland to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Ontario.

  • Can I find deals for business class flights from Portland to Ontario?

    Yes. Cheapflights offers flight deals from Portland to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Region of Ontario?

    Currently, July is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of $144). Flying from Portland to Region of Ontario in February is currently the most expensive (average of $371). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Portland to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Vancouver Intl flights
Portland to Calgary flights
Portland to Pearson Intl flights
Portland to Pierre Elliott Trudeau Intl flights
Boise to Vancouver Intl flights
Boise to Calgary flights
Portland to Victoria flights
Portland to Edmonton flights
Portland to Toronto Island flights
Redmond to Vancouver Intl flights
Eugene to Vancouver Intl flights
Boise to Pearson Intl flights
Portland to Kelowna flights
Portland to Comox flights
Redmond to Calgary flights
Portland to Ottawa flights
Portland to Halifax flights
Portland to Québec City flights
Portland to St. John's flights
Medford to Vancouver Intl flights
Portland to Winnipeg flights
Portland to Yellowknife flights
Portland to Kamloops flights
Medford to Pearson Intl flights
Boise to Québec City flights
Eugene to Pearson Intl flights
Boise to Victoria flights
Portland to Fredericton flights
Eugene to Edmonton flights
Portland to Saskatoon flights
Redmond to Pearson Intl flights
Yakima to Vancouver Intl flights
Portland to Whitehorse flights
Portland to Regina flights
Medford to Hamilton flights
Boise to Halifax flights
Boise to Hamilton flights
Medford to Pierre Elliott Trudeau Intl flights
Redmond to Halifax flights
Boise to Pierre Elliott Trudeau Intl flights
Medford to Ottawa flights
Eugene to Pierre Elliott Trudeau Intl flights
Eugene to Ottawa flights
Portland to Williams Lake flights
Yakima to Edmonton flights

Top 6 airlines flying from Portland to Ontario

Discover the top 6 airlines that operate flights from Portland to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$140Average$586FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$148Average$581FlexibilityNo cancel feeOn-time69%
DeltaCheapest$151Average$412FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$173Average$301FlexibilityNo cancel feeOn-time60%
American AirlinesCheapest$348Average$557FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$368Average$584FlexibilityNo cancel feeOn-time75%

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