Find flights
When to book
Airlines
FAQs

Cheap flights from Portland to Ontario from C$ 175

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 23/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
11 Jan — 18 Jan1
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 12 December 2025.

Fri 26/127:00 p.m.PDX - YYZ
1 stop7h 59mAir Canada
Fri 9/18:15 a.m.YYZ - PDX
2 stops9h 25mAir Canada
Deal found 10/12C$ 458
Wed 24/127:00 p.m.PDX - YYZ
2 stops13h 40mAir Canada
Thu 8/18:15 a.m.YYZ - PDX
2 stops9h 25mAir Canada
Deal found 10/12C$ 465
Thu 25/127:45 p.m.PDX - YYZ
1 stop8h 45mUnited Airlines
Tue 6/19:00 p.m.YYZ - PDX
1 stop17h 57mUnited Airlines
Deal found 11/12C$ 470
Fri 26/127:00 p.m.PDX - YYZ
1 stop7h 59mAir Canada
Wed 7/19:50 p.m.YYZ - PDX
2 stops14h 25mAir Canada
Deal found 10/12C$ 494
Wed 24/123:15 p.m.PDX - YYZ
2 stops11h 23mAir Canada
Tue 6/19:50 p.m.YYZ - PDX
2 stops14h 25mAir Canada
Deal found 10/12C$ 501
Wed 24/127:00 p.m.PDX - YYZ
1 stop10h 59mAir Canada
Fri 9/19:00 a.m.YYZ - PDX
1 stop12h 30mAir Canada
Deal found 10/12C$ 502
Sun 21/127:00 p.m.PDX - YYZ
1 stop7h 59mAir Canada
Thu 8/18:15 a.m.YYZ - PDX
2 stops9h 25mAir Canada
Deal found 10/12C$ 517
Sun 28/127:00 p.m.PDX - YYZ
1 stop15h 05mAir Canada
Wed 7/19:50 p.m.YYZ - PDX
2 stops14h 25mAir Canada
Deal found 11/12C$ 520
Wed 31/123:02 p.m.PDX - YYZ
1 stop16h 54mAmerican Airlines
Wed 7/16:14 a.m.YYZ - PDX
1 stop19h 03mAmerican Airlines
Deal found 11/12C$ 524
Tue 16/127:00 a.m.PDX - YYZ
1 stop9h 45mUnited Airlines
Mon 5/110:00 a.m.YYZ - PDX
1 stop13h 45mUnited Airlines
Deal found 10/12C$ 530
Wed 31/1210:52 p.m.PDX - YUL
1 stop17h 56mUnited Airlines
Tue 20/13:00 p.m.YUL - PDX
1 stop9h 49mUnited Airlines
Deal found 10/12C$ 554
Thu 18/129:50 a.m.PDX - YUL
1 stop8h 10mAir Canada
Thu 15/19:00 a.m.YUL - PDX
1 stop8h 40mAir Canada
Deal found 10/12C$ 709

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 12 December 2025.

Round-trip from

C$ 385

One-way from

C$ 175

Popular in

December

Cheapest in

August

Average price

C$ 800
Air Canada
  • Air Canada
  • 8/1-17/1
  • 4 total stops
  • 20h 58m total
  • Portland to Ontario
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 23/1
  • 1 total stop
  • 15h 05m total
  • Portland to Ontario
Search Deals
High demand for flights, 0% potential price rise
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 December 2025
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 12 December 2025.
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 8/1

2:38 p.m.-3:35 p.m.

1 stop21h 57m

Toronto Pearson Intl

Sat 17/1

4:45 p.m.-10:46 p.m.

1 stop9h 01m

C$ 426

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 7/1

11:05 p.m.-11:48 a.m.

1 stop9h 43m

Toronto Pearson Intl

Thu 8/1

3:45 p.m.-10:53 p.m.

1 stop10h 08m

C$ 437

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 13/4

11:59 p.m.-1:42 p.m.

1 stop10h 43m

Toronto Pearson Intl

Tue 14/4

3:50 p.m.-11:02 p.m.

1 stop10h 12m

C$ 437

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 11/3

5:05 a.m.-3:02 p.m.

1 stop6h 57m

Toronto Pearson Intl

Fri 10/4

2:45 p.m.-10:10 p.m.

1 stop10h 25m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 7/1

5:00 a.m.-3:02 p.m.

1 stop7h 02m

Toronto Pearson Intl

Fri 9/1

9:00 a.m.-6:56 p.m.

1 stop12h 56m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 5/1

10:52 p.m.-2:14 p.m.

1 stop12h 22m

Toronto Pearson Intl

Mon 12/1

5:30 p.m.-10:32 p.m.

1 stop8h 02m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 15/1

5:00 a.m.-3:02 p.m.

1 stop7h 02m

Toronto Pearson Intl

Sun 18/1

2:57 p.m.-9:49 p.m.

1 stop9h 52m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 22/5

10:59 p.m.-11:45 a.m.

1 stop9h 46m

Toronto Pearson Intl

Tue 26/5

6:30 a.m.-4:54 p.m.

1 stop13h 24m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 20/2

10:56 a.m.-9:21 p.m.

1 stop7h 25m

Toronto Pearson Intl

Wed 18/3

2:45 p.m.-8:40 p.m.

1 stop8h 55m

C$ 470

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 7/1

5:00 a.m.-3:02 p.m.

1 stop7h 02m

Toronto Pearson Intl

Wed 7/1

9:00 p.m.-11:57 a.m.

1 stop17h 57m

C$ 470

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 54 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, December is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 124). Flying from Portland to Region of Ontario in February is currently the most expensive (average of C$ 520). 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.

What is the cheapest time of day to fly from PDX to ON?

Find hourly flight availability from Portland to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

It’s typically best to fly out from Portland to Region of Ontario in the morning. Doing so could potentially save you 44% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 12 December 2025.
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
3,195 reviews
Check prices

Entertainment

6.1

Overall

7.2

Comfort

7.1

Boarding

7.4

Crew

7.9

Food

6.2

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
3,195 reviews
WestJet
7.2
Good
3,195 reviews
Check prices

Entertainment

6.1

Overall

7.2

Comfort

7.1

Boarding

7.4

Crew

7.9

Food

6.2

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?

    Alaska Airlines, United Airlines, and American Airlines can get you from Portland to Region of Ontario in just under 9h 43m. Your travel time can differ by up to 12h 14m. 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, December is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 124). Flying from Portland to Region of Ontario in February is currently the most expensive (average of C$ 520). 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 Pierre Elliott Trudeau Intl flights
Boise to Vancouver Intl flights
Portland to Calgary flights
Medford to Vancouver Intl flights
Boise to Calgary flights
Portland to Edmonton flights
Boise to Pearson Intl flights
Portland to Victoria flights
Portland to Ottawa flights
Redmond to Vancouver Intl flights
Portland to Halifax flights
Portland to Regina flights
Eugene to Vancouver Intl flights
Portland to Winnipeg flights
Boise to Pierre Elliott Trudeau Intl flights
Boise to Edmonton flights
Portland to Nanaimo flights
Medford to Pearson Intl flights
Medford to Pierre Elliott Trudeau Intl flights
Redmond to Regina flights
Portland to Saskatoon flights
Eugene to Pierre Elliott Trudeau Intl flights
Redmond to Pearson Intl flights
Portland to Fredericton flights
Boise to Halifax flights
Eugene to Edmonton flights
Eugene to Ottawa flights
Portland to Charlottetown flights
Portland to Whitehorse flights
Portland to Williams Lake flights
Eugene to Pearson 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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 323AverageC$ 358FlexibilityNo 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.