Find flights
When to book
Airlines
FAQs

Cheap flights from Portland to Ontario from C$ 143

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 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
2 May — 9 May1
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 2 April 2026.

Wed 5/82:30 p.m.
PDX
-
YYZ
2 stops11h 40m
WestJet
Wed 12/86:10 a.m.
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 29/3C$ 347
Wed 3/62:30 p.m.
PDX
-
YYZ
2 stops11h 40m
WestJet
Wed 10/66:10 a.m.
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 28/3C$ 349
Tue 21/72:30 p.m.
PDX
-
YYZ
2 stops11h 40m
WestJet
Tue 28/77:00 a.m.
YYZ
-
PDX
1 stop9h 50m
WestJet
Deal found 29/3C$ 351
Wed 1/72:30 p.m.
PDX
-
YYZ
1 stop7h 35m
WestJet
Tue 28/76:10 a.m.
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 29/3C$ 360
Sat 30/52:30 p.m.
PDX
-
YYZ
1 stop7h 35m
WestJet
Wed 17/69:00 a.m.
YYZ
-
PDX
1 stop7h 50m
WestJet
Deal found 29/3C$ 370
Wed 3/62:30 p.m.
PDX
-
YYZ
2 stops11h 40m
WestJet
Wed 17/69:00 a.m.
YYZ
-
PDX
1 stop7h 50m
WestJet
Deal found 29/3C$ 392
Fri 15/52:30 p.m.
PDX
-
YYZ
2 stops11h 40m
WestJet
Mon 18/510:25 p.m.
YYZ
-
PDX
1 stop18h 25m
WestJet
Deal found 28/3C$ 395
Wed 3/62:30 p.m.
PDX
-
YYZ
2 stops11h 40m
WestJet
Tue 16/66:10 a.m.
YYZ
-
PDX
2 stops10h 40m
WestJet
Deal found 29/3C$ 399
Wed 16/92:30 p.m.
PDX
-
YUL
1 stop13h 35m
WestJet
Mon 21/97:15 a.m.
YUL
-
PDX
1 stop9h 35m
WestJet
Deal found 1/4C$ 403
Sat 5/92:30 p.m.
PDX
-
YUL
1 stop23h 00m
WestJet
Sat 12/97:15 a.m.
YUL
-
PDX
1 stop9h 35m
WestJet
Deal found 30/3C$ 414
Mon 13/47:05 p.m.
PDX
-
YUL
2 stops22h 35m
Air Canada
Wed 22/47:30 a.m.
YUL
-
PDX
1 stop10h 10m
Air Canada
Deal found 30/3C$ 420
Tue 22/910:10 a.m.
PDX
-
YUL
2 stops10h 23m
Air Canada
Tue 29/98:10 a.m.
YUL
-
PDX
2 stops13h 56m
Air Canada
Deal found 28/3C$ 438

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 2 April 2026.

Round-trip from

C$ 347

One-way from

C$ 143

Popular in

December

Cheapest in

August

Average price

C$ 574
WestJet
  • WestJet
  • 5/8-12/8
  • 4 total stops
  • 22h 20m total
  • Portland to Ontario
Search Deals
WestJet
  • WestJet
  • 19/5
  • 2 total stops
  • 11h 40m total
  • Portland to Ontario
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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 2 April 2026.
Use the filters below to find and compare flights from Portland to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 17/9

6:57 p.m.-3:14 p.m.

1 stop17h 17m

Toronto Pearson Intl

Sun 20/9

10:45 a.m.-10:52 p.m.

1 stop15h 07m

C$ 429
Quickest round-trip

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 16/7

2:25 p.m.-11:59 p.m.

1 stop6h 34m

Toronto Pearson Intl

Tue 21/7

5:15 p.m.-12:02 a.m.

1 stop9h 47m

C$ 447

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 25/6

10:40 p.m.-9:54 a.m.

1 stop8h 14m

Toronto Pearson Intl

Tue 14/7

5:15 p.m.-12:02 a.m.

1 stop9h 47m

C$ 447

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Thu 9/7

11:40 p.m.-9:54 a.m.

1 stop7h 14m

Toronto Pearson Intl

Tue 14/7

5:15 p.m.-12:02 a.m.

1 stop9h 47m

C$ 447

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sat 8/8

5:00 p.m.-9:54 a.m.

1 stop13h 54m

Toronto Pearson Intl

Sat 15/8

1:00 p.m.-11:09 p.m.

1 stop13h 09m

C$ 447

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Sun 12/4

10:56 p.m.-5:56 p.m.

1 stop16h 00m

Toronto Pearson Intl

Tue 14/4

2:45 p.m.-10:34 p.m.

1 stop10h 49m

C$ 447

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Fri 17/7

10:40 p.m.-9:54 a.m.

1 stop8h 14m

Toronto Pearson Intl

Tue 21/7

5:15 p.m.-12:02 a.m.

1 stop9h 47m

C$ 447

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Wed 15/7

11:40 p.m.-9:54 a.m.

1 stop7h 14m

Toronto Pearson Intl

Tue 21/7

5:15 p.m.-12:02 a.m.

1 stop9h 47m

C$ 447

PortlandToronto

PDX - YYZ

PDXYYZ

Portland

Tue 28/4

5:30 a.m.-4:14 p.m.

1 stop7h 44m

Toronto Pearson Intl

Wed 29/4

7:00 a.m.-12:33 a.m.

2 stops20h 33m

C$ 458

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Sat 26/9

8:00 a.m.-7:45 p.m.

1 stop8h 45m

Montreal Pierre Elliott Trudeau Intl

Thu 1/10

11:23 a.m.-10:38 p.m.

2 stops14h 15m

C$ 471

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 60 resultsSorted by cheapest first
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, July is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 200). Flying from Portland to Region of Ontario in February is currently the most expensive (average of C$ 475). 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.

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 2 April 2026.
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
3,309 reviews
Check prices

Boarding

7.4

Crew

7.9

Overall

7.2

Entertainment

6.1

Comfort

7.0

Food

6.2

Reviews

1 / 20
10.0
Excellent

Janice,Mar 2026

TQO - YYZ

I had a very happy experience with fast boarding, an early flight and landing, and a quick baggage claim.
WestJet
7.2
Good
3,309 reviews
WestJet
7.2
Good
3,309 reviews
Check prices

Boarding

7.4

Crew

7.9

Overall

7.2

Entertainment

6.1

Comfort

7.0

Food

6.2

Reviews

1 / 20
10.0
Excellent

Janice,Mar 2026

TQO - YYZ

I had a very happy experience with fast boarding, an early flight and landing, and a quick baggage claim.

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?

    United Airlines, Delta, and WestJet can get you from Portland to Region of Ontario in just under 7h 06m. Your travel time can differ by up to 14h 44m. Portland and Region of Ontario are separated by a distance of 3742 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, July is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 200). Flying from Portland to Region of Ontario in February is currently the most expensive (average of C$ 475). 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.

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 2 April 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 326AverageC$ 361FlexibilityNo 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.