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Cheap flights from Portland to Ontario from C$ 183

PDX — YYZ
10 Oct — 17 Oct1
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

Fri 2/102:30 p.m. -
2 stops11h 40m
Sun 18/109:00 a.m. -
1 stop7h 50m
Deal found 6/9C$ 411
Mon 28/92:30 p.m. -
1 stop7h 35m
Sun 4/108:00 a.m. -
1 stop8h 50m
Deal found 9/9C$ 416
Mon 5/102:30 p.m. -
1 stop7h 35m
Sun 18/108:00 a.m. -
1 stop8h 50m
Deal found 6/9C$ 419
Mon 5/102:30 p.m. -
2 stops11h 40m
Mon 12/108:00 a.m. -
1 stop8h 50m
Deal found 5/9C$ 426
Fri 9/102:30 p.m. -
1 stop7h 35m
Sun 11/109:00 a.m. -
1 stop7h 50m
Deal found 9/9C$ 430
Fri 18/92:30 p.m. -
2 stops11h 40m
Sun 20/97:00 a.m. -
1 stop9h 50m
Deal found 6/9C$ 438
Sat 17/1010:10 a.m. -
1 stop7h 26m
Fri 23/107:30 a.m. -
1 stop10h 16m
Deal found 9/9C$ 449
Tue 3/1110:00 a.m. -
1 stop7h 30m
Mon 9/117:30 a.m. -
1 stop10h 11m
Deal found 10/9C$ 452
Fri 2/102:30 p.m. -
1 stop13h 35m
Fri 16/107:15 a.m. -
1 stop9h 35m
Deal found 6/9C$ 476
Sun 15/1110:00 a.m. -
1 stop7h 30m
Mon 16/117:30 a.m. -
1 stop16h 16m
Deal found 9/9C$ 478
Sun 27/92:30 p.m. -
1 stop13h 35m
Sun 4/107:15 a.m. -
1 stop9h 35m
Deal found 8/9C$ 483
Fri 25/92:30 p.m. -
1 stop30h 15m
Sun 4/107:15 a.m. -
1 stop9h 35m
Deal found 6/9C$ 484

Find flight deals from Portland to Ontario

Round-trip from

C$ 411

One-way from

C$ 183

Popular in

December

Cheapest in

February

Average price

C$ 620
WestJet
  • WestJet
  • 2/10-18/10
  • 3 total stops
  • 19h 30m total
  • Portland to Ontario
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Air Canada
  • Air Canada
  • 19/10-31/12
  • 1 total stop
  • 7h 05m total
  • Portland to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 65 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease (C$ 39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
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 Portland - YYZ Toronto Pearson Intl

PDXYYZ

Portland

Fri 2/10

2:30 p.m.-5:10 a.m.

2 stops11h 40m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 192

PortlandToronto

PDX Portland - YYZ Toronto Pearson Intl

PDXYYZ

Portland

Fri 18/9

2:30 p.m.-1:05 a.m.

1 stop7h 35m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 210

PortlandToronto

PDX Portland - YYZ Toronto Pearson Intl

PDXYYZ

Portland

Wed 21/10

7:02 a.m.-5:56 p.m.

1 stop7h 54m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 216

PortlandToronto

PDX Portland - YYZ Toronto Pearson Intl

PDXYYZ

Portland

Thu 15/10

7:45 p.m.-8:25 a.m.

2 stops9h 40m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 219
Quickest round-trip

PortlandToronto

PDX Portland - YYZ Toronto Pearson Intl

PDXYYZ

Portland

Fri 2/10

2:27 p.m.-11:59 p.m.

1 stop6h 32m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 226

PortlandToronto

PDX Portland - YYZ Toronto Pearson Intl

PDXYYZ

Portland

Fri 25/9

2:27 p.m.-11:59 p.m.

1 stop6h 32m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 226

PortlandToronto

PDX Portland - YYZ Toronto Pearson Intl

PDXYYZ

Portland

Tue 22/9

10:50 a.m.-9:32 p.m.

1 stop7h 42m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 226

PortlandToronto

PDX Portland - YYZ Toronto Pearson Intl

PDXYYZ

Portland

Thu 8/10

11:12 p.m.-1:36 p.m.

1 stop11h 24m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 227

PortlandToronto

PDX Portland - YYZ Toronto Pearson Intl

PDXYYZ

Portland

Fri 13/11

7:10 p.m.-6:52 a.m.

1 stop8h 42m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 229

PortlandMontreal

PDX Portland - YUL Montreal Pierre Elliott Trudeau Intl

PDXYUL

Portland

Wed 23/9

9:46 a.m.-11:44 p.m.

2 stops10h 58m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 233

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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$ 509). Flying from Portland to Region of Ontario in December is currently the most expensive (average of C$ 842). 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?

Airfare is below average for this route at the moment.
Portland to Region of Ontario flights typically cost between C$ 503 and C$ 798 in October.
The cheapest round-trip price found within the last 5 days was C$ 411 on WestJet (2 Oct-18 Oct).

How far ahead should I book a flight from Portland to Region of Ontario?

The price you pay for your flight from Portland to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 85 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

  • 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?

    WestJet, United Airlines, and Delta can get you from Portland to Region of Ontario in just under 8h 04m. Your travel time can differ by up to 3h 36m. 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 WestJet (C$ 134), United Airlines (C$ 187), and Alaska Airlines (C$ 232).

  • 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, January is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of C$ 509). Flying from Portland to Region of Ontario in December is currently the most expensive (average of C$ 842). 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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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.

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