Find flights
When to book
Airlines
FAQs

Cheap flights from Portland to Ontario from C$ 185

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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

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 28 October 2025.

Round-trip from

C$ 443

One-way from

C$ 185

Popular in

March

Cheapest in

August

Average price

C$ 502
United Airlines
  • United Airlines
  • 11/11-12/11
  • 2 total stops
  • 19h 36m total
  • Portland to Ontario
Search Deals
12/1
  • 12/1
  • 3 total stops
  • 34h 07m total
  • Portland to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 122 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find 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 October 2025.

Tue 11/1111:12 p.m.PDX - YYZ
1 stop9h 36mUnited Airlines
Wed 12/113:45 p.m.YYZ - PDX
1 stop10h 00mUnited Airlines
Deal found 27/10C$ 443
Wed 12/119:50 a.m.PDX - YYZ
1 stop8h 04mAir Canada
Wed 19/119:00 a.m.YYZ - PDX
1 stop8h 40mAir Canada
Deal found 26/10C$ 456
Sun 7/125:00 a.m.PDX - YYZ
1 stop7h 02mMultiple Airlines
Fri 12/1212:00 p.m.YYZ - PDX
2 stops9h 30mMultiple Airlines
Deal found 28/10C$ 470
Fri 5/123:15 p.m.PDX - YYZ
2 stops11h 23mAir Canada
Sun 7/128:00 a.m.YYZ - PDX
2 stops9h 40mAir Canada
Deal found 27/10C$ 474
Fri 5/125:00 a.m.PDX - YYZ
1 stop7h 02mUnited Airlines
Sun 7/126:30 a.m.YYZ - PDX
1 stop19h 22mUnited Airlines
Deal found 28/10C$ 477
Wed 31/125:00 a.m.PDX - YYZ
1 stop7h 02mUnited Airlines
Wed 7/111:00 a.m.YYZ - PDX
2 stops13h 12mUnited Airlines
Deal found 27/10C$ 490
Mon 10/1110:15 p.m.PDX - YYZ
2 stops10h 39mAmerican Airlines
Sat 15/1111:51 a.m.YYZ - PDX
2 stops10h 58mAmerican Airlines
Deal found 27/10C$ 497
Wed 19/1112:35 a.m.PDX - YUL
2 stops13h 46mDelta
Tue 25/1112:50 p.m.YUL - PDX
1 stop12h 15mDelta
Deal found 28/10C$ 575
Wed 19/1112:35 a.m.PDX - YUL
2 stops13h 46mDelta
Mon 24/119:26 a.m.YUL - PDX
2 stops15h 39mDelta
Deal found 28/10C$ 583
Tue 25/119:50 a.m.PDX - YUL
1 stop8h 10mAir Canada
Tue 2/127:30 a.m.YUL - PDX
1 stop10h 10mAir Canada
Deal found 28/10C$ 599
Mon 24/1112:35 a.m.PDX - YUL
2 stops13h 46mDelta
Tue 2/1212:50 p.m.YUL - PDX
1 stop12h 20mDelta
Deal found 28/10C$ 632
Thu 11/129:50 a.m.PDX - YUL
1 stop8h 10mAir Canada
Fri 12/129:00 a.m.YUL - PDX
1 stop8h 40mAir Canada
Deal found 27/10C$ 656

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 October 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

Sat 10/1

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

1 stop6h 35m

Toronto Pearson Intl

Sat 24/1

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

1 stop9h 01m

C$ 449

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 11/11

11:59 p.m.-2:01 p.m.

1 stop11h 02m

Toronto Pearson Intl

Wed 12/11

4:10 p.m.-10:53 a.m.

2 stops21h 43m

C$ 450

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 7/1

11:05 p.m.-1:43 p.m.

1 stop11h 38m

Toronto Pearson Intl

Sun 11/1

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

2 stops9h 40m

C$ 474

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 7/4

11:55 p.m.-1:34 p.m.

1 stop10h 39m

Toronto Pearson Intl

Wed 8/4

4:00 p.m.-8:49 p.m.

1 stop7h 49m

C$ 474

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sun 16/11

11:15 p.m.-8:57 a.m.

1 stop6h 42m

Toronto Pearson Intl

Tue 18/11

12:25 p.m.-10:21 p.m.

1 stop12h 56m

C$ 477

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 10/2

1:24 p.m.-9:58 a.m.

2 stops17h 34m

Toronto Pearson Intl

Wed 18/2

8:15 a.m.-2:40 p.m.

2 stops9h 25m

C$ 477

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 5/12

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

1 stop7h 02m

Toronto Pearson Intl

Sun 7/12

6:30 a.m.-10:52 p.m.

1 stop19h 22m

C$ 477

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 8/1

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

1 stop7h 02m

Toronto Pearson Intl

Sun 11/1

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

1 stop9h 52m

C$ 477

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sun 7/12

11:28 p.m.-11:48 a.m.

1 stop9h 20m

Toronto Pearson Intl

Fri 12/12

4:10 p.m.-9:15 p.m.

1 stop8h 05m

C$ 477

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 7/1

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

1 stop7h 02m

Toronto Pearson Intl

Sun 11/1

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

1 stop9h 52m

C$ 477

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/10

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, December is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 126). Flying from Portland to Region of Ontario in February is currently the most expensive (average of C$ 533). 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 28 October 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 28 October 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
3,148 reviews
Check prices

Boarding

7.4

Entertainment

6.1

Food

6.2

Overall

7.2

Comfort

7.1

Crew

7.9

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
3,148 reviews
WestJet
7.2
Good
3,148 reviews
Check prices

Boarding

7.4

Entertainment

6.1

Food

6.2

Overall

7.2

Comfort

7.1

Crew

7.9

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
10,371 reviews
WestJet
7.2
Good
3,148 reviews
Check prices

Boarding

7.4

Entertainment

6.1

Food

6.2

Overall

7.2

Comfort

7.1

Crew

7.9

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 Delta can get you from Portland to Region of Ontario in just under 6h 35m. Your travel time can differ by up to 7h 11m. 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 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 Alaska Airlines (C$ 186), Air Canada (C$ 193), and Delta (C$ 248).

  • 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$ 126). Flying from Portland to Region of Ontario in February is currently the most expensive (average of C$ 533). 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
Boise to Vancouver Intl flights
Medford to Vancouver Intl flights
Portland to Calgary flights
Portland to Pierre Elliott Trudeau Intl flights
Portland to Edmonton flights
Eugene to Vancouver Intl flights
Portland to Winnipeg flights
Redmond to Pearson Intl flights
Portland to Ottawa flights
Portland to Victoria flights
Portland to Regina flights
Boise to Pearson Intl flights
Boise to Calgary flights
Boise to Edmonton flights
Boise to Pierre Elliott Trudeau Intl flights
Redmond to Vancouver Intl flights
Eugene to Pearson Intl flights
Boise to Halifax flights
Medford to Pearson Intl flights
Portland to Halifax flights
Eugene to Pierre Elliott Trudeau Intl flights
Medford to Pierre Elliott Trudeau Intl flights
Eugene to Edmonton flights
Eugene to Ottawa flights
Portland to Saskatoon flights
Redmond to Regina flights
Portland to Charlottetown flights
Portland to Whitehorse flights
Portland to Williams Lake flights
Portland to Sydney 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 28 October 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 328AverageC$ 363FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 480AverageC$ 891FlexibilityNo 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.