Find flights
When to book
Airlines
FAQs

Cheap flights from Portland to Ontario from C$ 164

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
27 Feb — 6 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portland to Ontario

Enter your travel dates to find the best prices.

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 28 January 2026.

Tue 24/21:36 p.m.
PDX
-
YYZ
1 stop22h 59m
Alaska Airlines
Thu 5/34:45 p.m.
YYZ
-
PDX
1 stop9h 59m
Alaska Airlines
Deal found 27/1C$ 447
Thu 5/37:05 p.m.
PDX
-
YYZ
1 stop7h 54m
Air Canada
Tue 17/38:00 a.m.
YYZ
-
PDX
1 stop9h 40m
Air Canada
Deal found 25/1C$ 450
Thu 12/33:15 p.m.
PDX
-
YYZ
2 stops12h 33m
Air Canada
Sat 11/48:00 a.m.
YYZ
-
PDX
2 stops13h 30m
Air Canada
Deal found 27/1C$ 458
Sat 7/37:05 p.m.
PDX
-
YYZ
1 stop7h 54m
Air Canada
Sat 4/48:00 a.m.
YYZ
-
PDX
2 stops9h 40m
Air Canada
Deal found 26/1C$ 462
Fri 22/510:59 p.m.
PDX
-
YYZ
1 stop15h 59m
United Airlines
Tue 26/59:00 p.m.
YYZ
-
PDX
1 stop15h 30m
United Airlines
Deal found 26/1C$ 470
Thu 26/37:05 p.m.
PDX
-
YYZ
1 stop8h 42m
Air Canada
Wed 8/46:15 a.m.
YYZ
-
PDX
2 stops11h 25m
Air Canada
Deal found 27/1C$ 473
Thu 19/23:15 p.m.
PDX
-
YYZ
2 stops12h 33m
Air Canada
Tue 24/28:00 a.m.
YYZ
-
PDX
2 stops13h 30m
Air Canada
Deal found 26/1C$ 476
Thu 12/31:39 p.m.
PDX
-
YYZ
1 stop14h 51m
United Airlines
Sat 11/46:30 a.m.
YYZ
-
PDX
1 stop17h 18m
United Airlines
Deal found 27/1C$ 478
Mon 2/39:50 a.m.
PDX
-
YUL
1 stop8h 10m
Air Canada
Tue 3/37:30 a.m.
YUL
-
PDX
1 stop10h 10m
Air Canada
Deal found 26/1C$ 533
Thu 26/23:15 p.m.
PDX
-
YUL
2 stops12h 58m
Air Canada
Wed 4/37:30 a.m.
YUL
-
PDX
1 stop10h 10m
Air Canada
Deal found 26/1C$ 540
Tue 24/29:44 p.m.
PDX
-
YUL
1 stop22h 00m
American Airlines
Tue 3/33:45 p.m.
YUL
-
PDX
1 stop11h 32m
American Airlines
Deal found 26/1C$ 545
Tue 24/29:50 a.m.
PDX
-
YUL
1 stop8h 19m
Air Canada
Tue 3/37:30 a.m.
YUL
-
PDX
1 stop10h 10m
Air Canada
Deal found 26/1C$ 548

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 28 January 2026.

Round-trip from

C$ 447

One-way from

C$ 164

Popular in

March

Cheapest in

August

Average price

C$ 493
Alaska Airlines
  • Alaska Airlines
  • 24/2-5/3
  • 2 total stops
  • 32h 58m total
  • Portland to Ontario
Search Deals
2/3
  • 2/3
  • 2 total stops
  • 18h 18m total
  • Portland to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 24 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 629,999 searches. Data last updated 28 January 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

Thu 5/3

7:05 p.m.-5:59 a.m.

1 stop7h 54m

Toronto Pearson Intl

Tue 17/3

8:00 a.m.-2:40 p.m.

1 stop9h 40m

C$ 450

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 26/3

7:05 p.m.-6:47 a.m.

1 stop8h 42m

Toronto Pearson Intl

Wed 8/4

8:00 a.m.-2:40 p.m.

1 stop9h 40m

C$ 465

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 25/5

10:40 p.m.-9:53 a.m.

1 stop8h 13m

Toronto Pearson Intl

Fri 29/5

10:15 a.m.-3:27 p.m.

1 stop8h 12m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 28/3

6:00 a.m.-3:35 p.m.

1 stop6h 35m

Toronto Pearson Intl

Wed 1/4

4:55 p.m.-9:38 p.m.

1 stop7h 43m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 31/3

7:14 p.m.-7:00 a.m.

1 stop8h 46m

Toronto Pearson Intl

Thu 2/4

4:18 p.m.-10:54 p.m.

1 stop9h 36m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 27/5

5:00 a.m.-3:45 p.m.

1 stop7h 45m

Toronto Pearson Intl

Fri 5/6

4:55 p.m.-11:03 p.m.

1 stop9h 08m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 22/5

10:40 p.m.-9:53 a.m.

1 stop8h 13m

Toronto Pearson Intl

Tue 26/5

9:00 p.m.-9:34 a.m.

1 stop15h 34m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 15/5

5:00 a.m.-3:45 p.m.

1 stop7h 45m

Toronto Pearson Intl

Mon 18/5

4:55 p.m.-9:34 p.m.

1 stop7h 39m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sun 26/4

11:59 p.m.-11:49 a.m.

1 stop8h 50m

Toronto Pearson Intl

Thu 30/4

5:16 p.m.-12:59 a.m.

1 stop10h 43m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 12/3

7:49 p.m.-7:30 a.m.

1 stop8h 41m

Toronto Pearson Intl

Sat 11/4

7:00 a.m.-11:44 a.m.

1 stop7h 44m

C$ 470

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/1

Showing 1-10 of 60 results
1
2
3
...
6

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 C$ 197). Flying from Portland to Region of Ontario in February is currently the most expensive (average of C$ 507). 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 28 January 2026.
Read reviews from past customers who have flown WestJet from Portland to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
WestJet
7.2
Good
3,251 reviews
Check prices

Comfort

7.0

Crew

7.9

Boarding

7.4

Entertainment

6.1

Food

6.2

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Sugith,Jan 2025

CUN - YYZ

On time departure. Good service on board. Comfort Plus seating was comfortable.
WestJet
7.2
Good
3,251 reviews
WestJet
7.2
Good
3,251 reviews
Check prices

Comfort

7.0

Crew

7.9

Boarding

7.4

Entertainment

6.1

Food

6.2

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Sugith,Jan 2025

CUN - YYZ

On time departure. Good service on board. Comfort Plus seating was comfortable.

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?

    Most people fly from Portland (PDX) if they book a flight from Portland to Ontario. Portland is conveniently located just 9.7 km from Portland’s city centre.

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

    Air Canada, United Airlines, and Alaska Airlines can get you from Portland to Region of Ontario in just under 6h 35m. Your travel time can differ by up to 1h 38m. Portland and Region of Ontario are separated by a distance of 3364 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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 C$ 197). Flying from Portland to Region of Ontario in February is currently the most expensive (average of C$ 507). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 Pearson Intl flights
Portland to Calgary flights
Portland to Pierre Elliott Trudeau Intl flights
Boise to Vancouver Intl flights
Portland to Victoria flights
Portland to Edmonton flights
Boise to Calgary flights
Eugene to Vancouver Intl flights
Redmond to Vancouver Intl flights
Boise to Pearson Intl flights
Medford to Vancouver Intl flights
Portland to Ottawa flights
Boise to Edmonton flights
Eugene to Pearson Intl flights
Portland to Winnipeg flights
Eugene to Edmonton flights
Portland to Nanaimo flights
Portland to Regina flights
Boise to Pierre Elliott Trudeau Intl flights
Portland to Halifax flights
Medford to Pearson Intl flights
Portland to Fredericton flights
Portland to Saskatoon flights
Portland to Whitehorse flights
Redmond to Pearson Intl flights
Boise to Halifax flights
Redmond to Regina flights
Eugene to Ottawa flights
Portland to Charlottetown flights
Eugene to Pierre Elliott Trudeau Intl flights
Portland to Williams Lake flights
Medford to Pierre Elliott Trudeau Intl flights
Portland to Sydney flights

Top airline flying from Portland to Ontario

Discover the top airline 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 629,999 searches. Data last updated 28 January 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 320AverageC$ 355FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portland to Ontario?

Cheapflights makes it easy to find Portland to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Portland to Ontario?

Cheapflights helps you find that perfect flight to Ontario from Portland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Portland to Ontario with no change fees?

Certainly. Search results for flights to Ontario from Portland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Portland to Ontario become cheaper?

Not ready to book yet? You can track prices for flights from Portland to Ontario on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.