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Cheap flights from Portland to Ontario from C$ 110

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
20 Apr — 27 Apr1
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 15 April 2025.

Round-trip from

C$ 320

One-way from

C$ 110

Popular in

March

Cheapest in

May

Average price

C$ 738

Good one-way deal

C$ 257 or less
5/5-7/5
  • 5/5-7/5
  • 3 total stops
  • 42h 53m total
  • Portland to Ontario
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9/6
  • 9/6
  • 3 total stops
  • 33h 11m total
  • Portland to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 193 potential increase over avg. RT price).
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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 April 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 15 April 2025.

Tue 6/57:01 p.m.PDX - YYZ
1 stop19h 19mMultiple Airlines
Fri 9/512:00 p.m.YYZ - PDX
2 stops27h 42mMultiple Airlines
Deal found 15/4C$ 318
Mon 7/71:45 p.m.PDX - YYZ
1 stop7h 39mWestJet
Mon 14/78:00 a.m.YYZ - PDX
1 stop7h 52mWestJet
Deal found 14/4C$ 332
Sun 1/61:45 p.m.PDX - YUL
1 stop7h 58mWestJet
Tue 1/77:00 a.m.YUL - PDX
1 stop8h 52mWestJet
Deal found 15/4C$ 370
Wed 20/87:40 p.m.PDX - YYZ
1 stop9h 40mAir Canada
Wed 3/98:00 a.m.YYZ - PDX
1 stop9h 46mAir Canada
Deal found 15/4C$ 373
Wed 11/61:45 p.m.PDX - YOW
1 stop7h 56mWestJet
Thu 10/76:00 a.m.YOW - PDX
1 stop9h 52mWestJet
Deal found 14/4C$ 374
Tue 27/51:24 p.m.PDX - YOW
2 stops14h 21mMultiple Airlines
Thu 5/67:50 a.m.YOW - PDX
1 stop8h 02mMultiple Airlines
Deal found 15/4C$ 381
Wed 20/81:45 p.m.PDX - YUL
1 stop7h 58mMultiple Airlines
Sat 6/96:00 p.m.YUL - PDX
1 stop7h 56mMultiple Airlines
Deal found 15/4C$ 407
Sat 5/73:25 p.m.PDX - YUL
2 stops12h 45mAir Canada
Thu 10/77:30 a.m.YUL - PDX
1 stop10h 15mAir Canada
Deal found 15/4C$ 419
Mon 5/511:59 p.m.PDX - YYZ
1 stop13h 26mAmerican Airlines
Thu 8/55:20 p.m.YYZ - PDX
1 stop8h 19mAmerican Airlines
Deal found 15/4C$ 441
Sun 4/510:47 p.m.PDX - YYZ
1 stop9h 57mUnited Airlines
Tue 6/56:30 a.m.YYZ - PDX
1 stop17h 23mUnited Airlines
Deal found 14/4C$ 473
Fri 20/69:30 p.m.PDX - YYZ
1 stop11h 43mDelta
Mon 30/61:04 p.m.YYZ - PDX
1 stop10h 19mDelta
Deal found 15/4C$ 505
Sat 28/611:30 p.m.PDX - YUL
1 stop17h 15mUnited Airlines
Wed 2/76:30 p.m.YUL - PDX
1 stop17h 27mUnited Airlines
Deal found 15/4C$ 508

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 15 April 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

Mon 5/5

7:01 p.m.-6:54 a.m.

2 stops32h 53m

Toronto Pearson Intl

Wed 7/5

9:45 a.m.-4:45 p.m.

1 stop10h 00m

C$ 320

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 7/7

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

1 stop7h 39m

Toronto Pearson Intl

Mon 14/7

8:00 a.m.-12:52 p.m.

1 stop7h 52m

C$ 332

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Sun 1/6

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

1 stop7h 58m

Montreal Pierre Elliott Trudeau Intl

Tue 1/7

7:00 a.m.-12:52 p.m.

1 stop8h 52m

C$ 370

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 20/8

7:40 p.m.-8:20 a.m.

1 stop9h 40m

Toronto Pearson Intl

Wed 3/9

8:00 a.m.-2:46 p.m.

1 stop9h 46m

C$ 373

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Wed 11/6

1:45 p.m.-12:41 a.m.

1 stop7h 56m

Ottawa

Thu 10/7

6:00 a.m.-12:52 p.m.

1 stop9h 52m

C$ 374

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Tue 27/5

1:24 p.m.-6:45 a.m.

2 stops14h 21m

Ottawa

Thu 5/6

7:50 a.m.-12:52 p.m.

1 stop8h 02m

C$ 381

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Wed 20/8

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

1 stop7h 58m

Montreal Pierre Elliott Trudeau Intl

Wed 3/9

6:00 p.m.-10:56 p.m.

1 stop7h 56m

C$ 407

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Sat 5/7

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

2 stops12h 45m

Montreal Pierre Elliott Trudeau Intl

Thu 10/7

7:30 a.m.-2:45 p.m.

1 stop10h 15m

C$ 419

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 5/5

3:24 p.m.-12:30 p.m.

1 stop18h 06m

Toronto Pearson Intl

Fri 9/5

6:30 a.m.-10:24 a.m.

1 stop6h 54m

C$ 441

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sun 4/5

10:47 p.m.-12:46 p.m.

1 stop10h 59m

Toronto Pearson Intl

Tue 6/5

4:18 p.m.-9:00 p.m.

1 stop7h 42m

C$ 473

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/4

Showing 1-10 of 33 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$ 258). 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 15 April 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 15 April 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
9,876 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,876 reviews
Alaska Airlines
8.0
Very good
9,876 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,876 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,658 reviews
Alaska Airlines
8.0
Very good
9,876 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,876 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
WestJet
7.2
Good
2,805 reviews
Alaska Airlines
8.0
Very good
9,876 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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$ 140), American Airlines (C$ 164), and Air Canada (C$ 175).

  • 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$ 181. While the most popular route (Portland - Toronto Pearson Intl) can be booked for C$ 356 on average our data indicates C$ 289 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$ 258). 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 Pierre Elliott Trudeau Intl flights
Portland to Calgary flights
Boise to Vancouver Intl flights
Portland to Victoria flights
Medford to Vancouver Intl flights
Portland to Edmonton flights
Eugene to Vancouver Intl flights
Redmond to Vancouver Intl flights
Boise to Calgary flights
Portland to Nanaimo flights
Portland to Winnipeg flights
Portland to Halifax flights
Boise to Pierre Elliott Trudeau Intl flights
Portland to Ottawa flights
Portland to Saskatoon flights
Eugene to Pearson Intl flights
Medford to Pearson Intl flights
Boise to Edmonton flights
Redmond to Pearson Intl flights
Boise to Halifax flights
Portland to Regina flights
Medford to Pierre Elliott Trudeau Intl flights
Boise to Pearson Intl flights
Eugene to Edmonton flights
Redmond to Regina flights
Portland to Charlottetown flights
Portland to Sydney flights
Portland to Whitehorse flights
Eugene to Ottawa flights
Portland to Williams Lake flights
Eugene to Pierre Elliott Trudeau Intl flights
Portland to Fredericton 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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 206AverageC$ 629FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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