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Cheap flights from Portland to Ontario from C$ 138

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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
17 Jun — 24 Jun1
1 adult

Cheap 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 June 2025.

Round-trip from

C$ 321

One-way from

C$ 138

Popular in

March

Cheapest in

August

Average price

C$ 643

Good one-way deal

C$ 253 or less
WestJet
  • WestJet
  • 22/7-29/7
  • 2 total stops
  • 15h 44m total
  • Portland to Ontario
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WestJet
  • WestJet
  • 8/8
  • 2 total stops
  • 13h 06m total
  • Portland to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 161 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
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Price to beat on a one-way flight from Portland to Ontario.
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Find 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 12 June 2025.

Tue 22/71:45 p.m.PDX - YYZ
1 stop7h 39mWestJet
Tue 29/78:00 a.m.YYZ - PDX
1 stop8h 05mWestJet
Deal found 10/6C$ 321
Mon 4/83:25 p.m.PDX - YUL
2 stops12h 45mMultiple Airlines
Wed 13/87:00 a.m.YUL - PDX
1 stop9h 05mMultiple Airlines
Deal found 12/6C$ 391
Thu 14/83:25 p.m.PDX - YYZ
2 stops11h 49mAir Canada
Tue 19/86:15 a.m.YYZ - PDX
2 stops11h 35mAir Canada
Deal found 11/6C$ 395
Thu 4/91:45 p.m.PDX - YYZ
1 stop7h 37mMultiple Airlines
Tue 9/94:45 p.m.YYZ - PDX
1 stop10h 14mMultiple Airlines
Deal found 11/6C$ 399
Fri 18/711:07 p.m.PDX - YYZ
1 stop15h 08mAmerican Airlines
Mon 21/76:24 p.m.YYZ - PDX
1 stop18h 25mAmerican Airlines
Deal found 12/6C$ 407
Sat 12/77:40 p.m.PDX - YOW
1 stop9h 39mAir Canada
Tue 22/76:00 p.m.YOW - PDX
1 stop8h 01mAir Canada
Deal found 10/6C$ 409
Mon 15/97:40 p.m.PDX - YUL
2 stops11h 10mAir Canada
Tue 16/91:30 p.m.YUL - PDX
2 stops12h 31mAir Canada
Deal found 10/6C$ 412
Wed 20/81:45 p.m.PDX - YUL
1 stop7h 58mWestJet
Sat 6/97:00 a.m.YUL - PDX
1 stop8h 48mWestJet
Deal found 12/6C$ 413
Wed 13/81:45 p.m.PDX - YOW
2 stops12h 40mWestJet
Sun 17/85:15 p.m.YOW - PDX
2 stops22h 50mWestJet
Deal found 9/6C$ 420
Sat 12/711:20 p.m.PDX - YOW
1 stop16h 32mUnited Airlines
Mon 21/76:33 a.m.YOW - PDX
1 stop15h 12mUnited Airlines
Deal found 12/6C$ 429
Mon 15/95:40 p.m.PDX - YUL
1 stop11h 36mUnited Airlines
Tue 16/911:23 a.m.YUL - PDX
2 stops12h 38mUnited Airlines
Deal found 10/6C$ 438
Thu 14/811:59 p.m.PDX - YYZ
1 stop11h 31mUnited Airlines
Sat 23/89:44 a.m.YYZ - PDX
1 stop8h 21mUnited Airlines
Deal found 9/6C$ 440

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 June 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

Tue 22/7

1:45 p.m.-12:24 a.m.

1 stop7h 39m

Toronto Pearson Intl

Tue 29/7

8:00 a.m.-1:05 p.m.

1 stop8h 05m

C$ 321

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Mon 4/8

3:25 p.m.-7:10 a.m.

2 stops12h 45m

Montreal Pierre Elliott Trudeau Intl

Wed 13/8

7:00 a.m.-1:05 p.m.

1 stop9h 05m

C$ 391

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 4/9

1:45 p.m.-12:22 a.m.

1 stop7h 37m

Toronto Pearson Intl

Tue 9/9

4:45 p.m.-11:59 p.m.

1 stop10h 14m

C$ 399

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 18/7

11:07 p.m.-5:15 p.m.

1 stop15h 08m

Toronto Pearson Intl

Mon 21/7

6:24 p.m.-9:49 a.m.

1 stop18h 25m

C$ 407

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 12/7

7:40 p.m.-8:19 a.m.

1 stop9h 39m

Ottawa

Tue 22/7

6:00 p.m.-11:01 p.m.

1 stop8h 01m

C$ 409

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Mon 15/9

7:40 p.m.-9:50 a.m.

2 stops11h 10m

Montreal Pierre Elliott Trudeau Intl

Tue 16/9

1:30 p.m.-11:01 p.m.

2 stops12h 31m

C$ 412

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Wed 20/8

1:45 p.m.-12:43 a.m.

1 stop7h 58m

Montreal Pierre Elliott Trudeau Intl

Sat 6/9

7:00 a.m.-12:48 p.m.

1 stop8h 48m

C$ 413

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 11/8

7:40 p.m.-7:40 a.m.

1 stop9h 00m

Toronto Pearson Intl

Sat 16/8

10:50 p.m.-9:30 a.m.

1 stop13h 40m

C$ 414

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Wed 13/8

1:45 p.m.-5:25 a.m.

2 stops12h 40m

Ottawa

Sun 17/8

5:15 p.m.-1:05 p.m.

2 stops22h 50m

C$ 420

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 12/7

11:20 p.m.-6:52 p.m.

1 stop16h 32m

Ottawa

Mon 21/7

6:33 a.m.-6:45 p.m.

1 stop15h 12m

C$ 429

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 40 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, January is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 167). Flying from Portland to Region of Ontario in July is currently the most expensive (average of C$ 255). 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 June 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland to Region of Ontario as you normally would.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 June 2025.
See what other customers who have flown with Alaska Airlines, Delta and United Airlines from Portland to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
WestJet
7.2
Good
2,868 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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.

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

    The cheapest airlines for a one-way flight from Portland to Region of Ontario are WestJet (C$ 138), Air Canada (C$ 154), and American Airlines (C$ 165).

  • 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.

  • What are the cheapest flights from Portland to Region of Ontario?

    Looking at all options, your cheapest flight can be booked for C$ 178. While the most popular route (Portland - Toronto Pearson Intl) can be booked for C$ 357 on average our data indicates C$ 284 when flying 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, January is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 167). Flying from Portland to Region of Ontario in July is currently the most expensive (average of C$ 255). 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 Pearson Intl flights
Portland to Calgary flights
Portland to Pierre Elliott Trudeau Intl flights
Portland to Edmonton flights
Boise to Calgary flights
Portland to Halifax flights
Boise to Vancouver Intl flights
Boise to Pearson Intl flights
Boise to Pierre Elliott Trudeau Intl flights
Eugene to Vancouver Intl flights
Portland to Ottawa flights
Medford to Vancouver Intl flights
Portland to Winnipeg flights
Medford to Pierre Elliott Trudeau Intl flights
Portland to Victoria flights
Eugene to Pearson Intl flights
Eugene to Pierre Elliott Trudeau Intl flights
Portland to Charlottetown flights
Redmond to Vancouver Intl flights
Portland to Regina flights
Boise to Edmonton flights
Redmond to Pearson Intl flights
Boise to Halifax flights
Portland to Williams Lake flights
Portland to Saskatoon flights
Portland to Sydney flights
Eugene to Edmonton flights
Eugene to Ottawa flights
Redmond to Regina flights
Portland to Whitehorse flights
Medford to Pearson Intl flights
Portland to Nanaimo flights
Portland to Fredericton flights

Top 2 airlines flying from Portland to Ontario

Discover the top 2 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 629,999 searches. Data last updated 12 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 203AverageC$ 580FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 291AverageC$ 339FlexibilityNo 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.

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