Find flights
When to book
Airlines
FAQs

Cheap flights from Portland to Ontario from C$ 158

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 27/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
11 Oct — 18 Oct1
1 adult
1 adult, Economy

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 11 September 2025.

Round-trip from

C$ 400

One-way from

C$ 158

Popular in

March

Cheapest in

August

Average price

C$ 576

Good one-way deal

C$ 256 or less
Air Canada
  • Air Canada
  • 16/10-17/10
  • 4 total stops
  • 23h 56m total
  • Portland to Ontario
Search Deals
WestJet
  • WestJet
  • 27/9
  • 2 total stops
  • 13h 06m total
  • Portland to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a one-way flight from Portland to Ontario.
Search Deals

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 11 September 2025.

Thu 16/103:25 p.m.PDX - YYZ
2 stops12h 35mAir Canada
Fri 17/1010:25 a.m.YYZ - PDX
2 stops11h 21mAir Canada
Deal found 9/9C$ 400
Fri 3/101:45 p.m.PDX - YOW
1 stop7h 55mMultiple Airlines
Sat 11/104:05 p.m.YOW - PDX
2 stops9h 56mMultiple Airlines
Deal found 10/9C$ 405
Fri 3/106:15 a.m.PDX - YOW
2 stops10h 14mAir Canada
Sat 11/104:05 p.m.YOW - PDX
2 stops9h 56mAir Canada
Deal found 10/9C$ 409
Fri 17/103:25 p.m.PDX - YYZ
2 stops12h 35mAir Canada
Thu 23/108:00 a.m.YYZ - PDX
1 stop9h 46mAir Canada
Deal found 9/9C$ 424
Sat 4/101:45 p.m.PDX - YYZ
1 stop7h 37mWestJet
Fri 10/1010:20 p.m.YYZ - PDX
2 stops17h 45mWestJet
Deal found 10/9C$ 434
Wed 22/109:55 a.m.PDX - YYZ
1 stop6h 57mAir Canada
Sun 26/107:00 a.m.YYZ - PDX
1 stop10h 45mAir Canada
Deal found 10/9C$ 442
Fri 3/101:45 p.m.PDX - YYZ
1 stop7h 37mMultiple Airlines
Tue 7/102:00 p.m.YYZ - PDX
2 stops22h 41mMultiple Airlines
Deal found 11/9C$ 443
Sat 11/101:45 p.m.PDX - YYZ
1 stop7h 37mMultiple Airlines
Wed 15/106:30 a.m.YYZ - PDX
1 stop11h 18mMultiple Airlines
Deal found 10/9C$ 445
Sun 19/1011:07 a.m.PDX - YYZ
1 stop10h 36mMultiple Airlines
Mon 20/102:00 p.m.YYZ - PDX
2 stops22h 41mMultiple Airlines
Deal found 9/9C$ 446
Wed 15/103:25 p.m.PDX - YYZ
2 stops11h 45mAir Canada
Sun 19/1011:00 p.m.YYZ - PDX
2 stops13h 20mAir Canada
Deal found 11/9C$ 448
Fri 17/103:25 p.m.PDX - YYZ
2 stops11h 45mAir Canada
Sun 19/106:15 a.m.YYZ - PDX
1 stop11h 31mAir Canada
Deal found 9/9C$ 449
Sat 25/107:40 p.m.PDX - YUL
1 stop8h 21mAir Canada
Sat 1/118:15 a.m.YUL - PDX
1 stop9h 30mAir Canada
Deal found 10/9C$ 452

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 11 September 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

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Fri 3/10

1:45 p.m.-12:40 a.m.

1 stop7h 55m

Ottawa

Sat 11/10

4:05 p.m.-11:01 p.m.

2 stops9h 56m

C$ 405

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Fri 3/10

6:15 a.m.-7:29 p.m.

2 stops10h 14m

Ottawa

Sat 11/10

4:05 p.m.-11:01 p.m.

2 stops9h 56m

C$ 409

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 23/10

9:55 a.m.-9:11 p.m.

1 stop8h 16m

Toronto Pearson Intl

Mon 27/10

10:35 p.m.-9:15 a.m.

1 stop13h 40m

C$ 442

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 17/10

6:15 a.m.-1:06 a.m.

1 stop15h 51m

Toronto Pearson Intl

Thu 23/10

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

1 stop9h 46m

C$ 442

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 3/3

11:55 p.m.-1:21 p.m.

1 stop10h 26m

Toronto Pearson Intl

Wed 4/3

3:50 p.m.-10:44 p.m.

1 stop9h 54m

C$ 455

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 16/10

3:25 p.m.-6:10 a.m.

2 stops11h 45m

Toronto Pearson Intl

Fri 17/10

8:30 a.m.-6:46 p.m.

1 stop13h 16m

C$ 467

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 16/10

2:15 p.m.-11:58 p.m.

1 stop6h 43m

Toronto Pearson Intl

Fri 17/10

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

1 stop9h 46m

C$ 473

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Mon 6/10

11:59 p.m.-9:58 a.m.

1 stop6h 59m

Toronto Pearson Intl

Wed 15/10

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

1 stop9h 46m

C$ 473

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 7/3

1:35 p.m.-7:00 a.m.

1 stop14h 25m

Toronto Pearson Intl

Wed 11/3

8:00 a.m.-2:45 p.m.

1 stop9h 45m

C$ 473

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 7/10

7:02 a.m.-10:36 p.m.

1 stop12h 34m

Toronto Pearson Intl

Wed 15/10

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

1 stop9h 46m

C$ 473

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

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, January is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 168). 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 11 September 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.

How much does it cost to fly round-trip from Portland to Region of Ontario?

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 11 September 2025.
Read reviews from past customers who have flown WestJet and Air Canada 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
3,091 reviews
Check prices

Entertainment

6.1

Boarding

7.4

Comfort

7.1

Crew

7.9

Overall

7.2

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
3,091 reviews
WestJet
7.2
Good
3,091 reviews
Check prices

Entertainment

6.1

Boarding

7.4

Comfort

7.1

Crew

7.9

Overall

7.2

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.
Air Canada
7.1
Good
10,000 reviews
WestJet
7.2
Good
3,091 reviews
Check prices

Entertainment

6.1

Boarding

7.4

Comfort

7.1

Crew

7.9

Overall

7.2

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?

    Air Canada, United Airlines, and Delta can get you from Portland to Region of Ontario in just under 10h 14m. Your travel time can differ by up to 4h 12m. Portland and Region of Ontario are separated by a distance of 3605 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.

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

    Looking at all options, your cheapest flight can be booked for C$ 180. While the most popular route (Portland - Toronto Pearson Intl) can be booked for C$ 410 on average, our data indicates C$ 288 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$ 168). 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

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 Edmonton flights
Portland to Victoria flights
Eugene to Vancouver Intl flights
Eugene to Pearson Intl flights
Boise to Calgary flights
Medford to Vancouver Intl flights
Eugene to Pierre Elliott Trudeau Intl flights
Portland to Winnipeg flights
Portland to Ottawa flights
Portland to Nanaimo flights
Boise to Pearson Intl flights
Redmond to Vancouver Intl flights
Redmond to Pearson Intl flights
Portland to Halifax flights
Medford to Pearson Intl flights
Boise to Halifax flights
Boise to Pierre Elliott Trudeau Intl flights
Portland to Regina flights
Eugene to Edmonton flights
Portland to Charlottetown flights
Portland to Saskatoon flights
Redmond to Regina flights
Portland to Whitehorse flights
Portland to Fredericton flights
Portland to Williams Lake flights
Eugene to Ottawa flights
Medford to Pierre Elliott Trudeau Intl flights
Portland to Sydney flights
Boise to Edmonton 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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 325AverageC$ 360FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 476AverageC$ 750FlexibilityNo 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.

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.