C$ 153 Find Cheap Flights from Portland to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Ontario departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Ontario, as well as popular online travel agencies
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Best Ontario Flight Deals from Portland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Ottawa
Ottawa1 stopC$ 426
Ottawa
Ottawa1 stopC$ 426

Cheap Flights from Portland to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Ontario

Fri, 22 Aug - Sun, 31 Aug
WestJet Logo
1:45 p.m. - 5:51 a.m.PDX-YYZ
13h 06m2 stops
WestJet Logo
8:00 a.m. - 1:04 p.m.YYZ-PDX
8h 04m1 stop
C$ 327WestJet
Find Deal
Fri, 18 Jul - Tue, 29 Jul
WestJet Logo
1:45 p.m. - 5:51 a.m.PDX-YYZ
13h 06m2 stops
WestJet Logo
6:30 a.m. - 1:05 p.m.YYZ-PDX
9h 35m1 stop
C$ 334WestJet
Find Deal
Wed, 3 Sep - Thu, 4 Sep
Air Canada Logo
3:25 p.m. - 5:45 a.m.PDX-YYZ
11h 20m2 stops
Air Canada Logo
9:15 a.m. - 6:46 p.m.YYZ-PDX
12h 31m2 stops
C$ 399Air Canada
Find Deal
Mon, 4 Aug - Wed, 13 Aug
Air Canada Logo
3:25 p.m. - 7:10 a.m.PDX-YUL
12h 45m2 stops
Air Canada Logo
7:30 a.m. - 2:50 p.m.YUL-PDX
10h 20m1 stop
C$ 399Air Canada
Find Deal
Fri, 11 Jul - Sat, 12 Jul
United Airlines Logo
11:59 p.m. - 2:30 p.m.PDX-YYZ
11h 31m1 stop
United Airlines Logo
5:15 p.m. - 10:29 p.m.YYZ-PDX
8h 14m1 stop
C$ 405United Airlines
Find Deal
Fri, 4 Jul - Thu, 10 Jul
American Airlines Logo
9:55 p.m. - 11:12 a.m.PDX-YYZ
10h 17m1 stop
American Airlines Logo
7:35 a.m. - 10:06 p.m.YYZ-PDX
17h 31m1 stop
C$ 409American Airlines
Find Deal
Fri, 27 Jun - Tue, 2 Sep
American Airlines Logo
12:59 a.m. - 10:50 p.m.PDX-YYZ
18h 51m1 stop
American Airlines Logo
6:49 a.m. - 9:15 p.m.YYZ-PDX
17h 26m1 stop
C$ 410American Airlines
Find Deal
Sat, 2 Aug - Sat, 9 Aug
 Logo
1:45 p.m. - 12:24 a.m.PDX-YYZ
7h 39m1 stop
 Logo
7:00 a.m. - 2:15 p.m.YYZ-PDX
10h 15m1 stop
C$ 413
Find Deal
Sat, 5 Jul - Mon, 7 Jul
United Airlines Logo
7:00 a.m. - 5:06 p.m.PDX-YOW
7h 06m1 stop
United Airlines Logo
6:33 a.m. - 3:14 p.m.YOW-PDX
11h 41m1 stop
C$ 426United Airlines
Find Deal
Tue, 9 Sep - Mon, 15 Sep
 Logo
9:30 p.m. - 6:52 p.m.PDX-YYZ
18h 22m2 stops
 Logo
8:00 a.m. - 12:48 p.m.YYZ-PDX
7h 48m1 stop
C$ 428
Find Deal
Useful Info

KAYAK's insights & trends for Portland to Ontario flights

Get data-powered insights and trends into flights from Portland to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Portland to Ontario flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Portland to Ontario.

The cheapest ticket to Ontario from Portland found in the last 72 hours was to Toronto, at C$ 569 round-trip. The most popular route is from Portland (PDX) to Toronto Pearson Intl Airport (YYZ), and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 569.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Ontario is August, when tickets cost C$ 471 (return) on average. On the other hand, the most expensive months are March and February, when the average cost of round-trip tickets is C$ 760 and C$ 701 respectively.

What’s the cheapest day of the week to fly from Portland to Ontario?

The average price of all round-trip flights from Portland to Ontario clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Ontario on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Portland to Ontario. For your return ticket, we recommend flying on a Tuesday and avoiding Mondays for the best deals.

How far in advance should I book a flight from Portland to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Portland to Ontario, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.


Good to know

Low seasonFebruary
High seasonAugust
Cheapest flightC$ 153
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 38% lower on average.
Flight from Portland to Toronto

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from Portland to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to Ontario is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Portland to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Ontario?

    The cheapest time of day to fly to Ontario is generally at night, when round-trip flights cost C$ 148 on average. The most expensive time of day to fly to Ontario is generally in the afternoon, which is peak travel time and where the average cost of a ticket is C$ 314.

Top airlines flying from Portland to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Portland to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
WestJetOverall score based on 2873 reviews
7.1Comfort
7.4Boarding
6.2Food
6.1Entertainment
7.9Crew
Airline reviews

West Jet flight was cancelled and I was not notified. I found out when I tried to check in on-line. Spent 4 hours on the phone with West Jet and Just Fly trying to figure what happened.

2.0 MediocreAmy, Jun 2025LAX - YYZ
Read more WestJet reviews

West Jet flight was cancelled and I was not notified. I found out when I tried to check in on-line. Spent 4 hours on the phone with West Jet and Just Fly trying to figure what happened.

Only issue was checking in took over an hour and was very stressful. It all worked out, but we weren't sure for a while.

We didn’t make the flight due to Delta’s check in line moving too slow.

The flight was ahead of schedule. A half glass of juice and a cookie is pathetic! No entertainment possibilities. Not even a plug-in for phone or IPad if you wanted to watch a downloaded movie. Back to flying Air Canada!

The flight was ahead of schedule. A half glass of juice and a cookie is pathetic!

It was good, flight was on time, boarding was smooth and done in zones, food was good too but there was no form of entertainment. Luggage’s were intact. So an overall good flight

The staff were the friendliest I have encountered in years. Absolutely great!

Plane changed to one with no entertainment system or ability to serve hot meals

Flight was delayed 3 times. Then cancelled due to pilot being timed out. They refused hotel vouchers. Gate attendants were very rude and could not help you at all.

No access to any entertainment No food other than a cookie or pretzels even tho flight was over the supper hour Seats very close together and very little leg room Staff was very good

Flight was delayed but the real issue is how long we sat after boarding. Space very limited for an overnight flight and seatbacks didn’t recline so it was almost impossible to sleep.

The staff made sure I was comfortable, moved me to a better seat with more leg room

Somehow, my booking was under my preferred name instead of my legal name so they almost didn’t let me board the plane at LAX. This problem should have been notified to me when I was still in Toronto.

When arriving over 2 hours early to check k in at Charlotte airport I was told I would have to check my carry on ? Apparently the flight was full and may not be room. I was not given a choice and the agent was quite unpleasant about it. I am a senior amd was not comfortable me having to worry about my bag being lost vut it didn’t seem to bother him. There were lots and lots of people of all ages in line when we boarded with carryons and most larger than mine .the rest of my journey was pleasant vut this was totally unacceptable.

The layover was 6 PLUS hours and we were only given a $15.00 voucher. We missed our first activity in Quebec due to the delay.

Miserable staff as it was a late/delayed flight and crew wasn’t in the best spirits. Completely understood as neither was most of the passengers. Still unacceptable l.

It was a short flight, and no entertainment. That was not a problem for us, but there is no option for "not applicable". There was a bit of turbulence, so there was no food service.

the fact air Canada changed my flight from 850 PM to 815 AM with zero regard to the plans i made that last day, the cost i lost out on as things were non refundable amd shortening my first vacation in 7 years sickened me. when we purchase a service thats whats we expect. when we want to change the service we have to pay for that option but you do whatever you want . i called accessibility dept as i have a cpap and an implanted loop recorder first person said no problem just let security know you cant go thru scanners. then i got an email saying i had to fill out a fit to fly form . which again there was NO need to have that none. But that cost me money and time to have a doctor fill it out. then when i went to check in online i was declined i had to see a person at the airport instead. i couldnt get my boarding pass like everyone elseso here I was contacting air canada so I would have a easy travel experience and it ended up being a nightmare with more work for me, more cost and time. the flight itself was great the nightmare around it i will never subject myself to again. i tried to stick with supporting Canada but Air Canada was not worth supporting. very disappointed especially with a dept that is supposed to help disabled people not make an already challenging event not worth going thru at all.

Most courteous, helpful employees and all flights were on time.

2.5 hour delay sitting in the plane on the tarmac, you tell me how the experience was

Everything you need to know for your flight from Portland to Ontario

Information on your arrival and departure airports

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