Cheap Flights from Portland Airport to Ontario from C$453 Roundtrip

Flight deals from Portland Airport to Ontario

Looking for cheap tickets from Portland Airport to Ontario, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Toronto.C$172 per passenger.Departing Tue., Jan. 6.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Portland on Tue., Jan. 6, arriving in Toronto Pearson International.Price includes taxes and charges.From C$172, select.

London.C$247 per passenger.Departing Sun., Jan. 18.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Portland on Sun., Jan. 18, arriving in London.Price includes taxes and charges.From C$247, select.

Ottawa.C$277 per passenger.Departing Tue., Jan. 20.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Portland on Tue., Jan. 20, arriving in Ottawa International.Price includes taxes and charges.From C$277, select.

Thunder Bay.C$299 per passenger.Departing Tue., Jan. 20.One-way flight with Hawaiian Airlines.Outbound indirect flight with Hawaiian Airlines, departs from Portland on Tue., Jan. 20, arriving in Thunder Bay.Price includes taxes and charges.From C$299, select.

Windsor.C$445 per passenger.Departing Sun., Dec. 21.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Portland on Sun., Dec. 21, arriving in Windsor.Price includes taxes and charges.From C$445, select.

See more deals

Flying from Portland Airport to Ontario

Arm yourself with these facts on the fly.

Cheapest flight found	C$172
Cheapest month to fly	January

How to find cheap flights from Portland Airport to Ontario

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Portland Airport to Ontario. Other savvy travellers recently found return flights from C$453 and one-way tickets from C$172. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in December

The cheapest time to fly from Portland Airport to Ontario is currently December.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from Portland Airport to anywhere you choose in Ontario.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from Portland Airport to your chosen airport in Ontario go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the Ontario Airport to Ontario flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

Are there any direct flights from Portland Airport to Ontario?

There are currently no direct flights from Portland Airport to Ontario, but we've found some other routes to Canada – check them out now.

What is the average price of a flight from Portland Airport to Ontario?

We looked at all of the upcoming return flights from Portland Airport to Ontario we could find over the next 12 months. It looks like C$453 is the best price. This is good, compared to the average Ontario ticket price of C$1,001.

What is the cheapest month to fly from Portland Airport to Ontario?

The cheapest month to fly from Portland Airport to Ottawa International Airport is currently January.
The cheapest month to fly from Portland Airport to Toronto Pearson International Airport is currently December.
The cheapest month to fly from Portland Airport to Windsor Airport is currently November.
And the cheapest month to fly from Portland Airport to London Airport is usually January.

Which upcoming date is cheapest to fly from Portland Airport to Ontario on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Portland Airport to Ontario on Friday, December 12, 2025.

If I'm flying from Portland Airport, where in Ontario is cheapest to fly into?

If you're flying from Portland, the cheapest city in Ontario to fly into is Toronto. The cheapest airport serving Toronto at the moment is Toronto Pearson International.