C$ 175 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 23/1. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
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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Flight Deals

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

Thu, 8 Jan - Sat, 17 Jan
Air Canada Logo
3:15 p.m. - 5:38 a.m.
PDX
-
YYZ
11h 23m2 stops
Air Canada Logo
8:05 a.m. - 2:40 p.m.
YYZ
-
PDX
9h 35m2 stops
C$ 385Air Canada
Thu, 8 Jan - Sat, 17 Jan
Air Canada Logo
3:15 p.m. - 5:38 a.m.
PDX
-
YYZ
11h 23m2 stops
Air Canada Logo
8:05 a.m. - 2:40 p.m.
YYZ
-
PDX
9h 35m2 stops
C$ 386Air Canada
Thu, 8 Jan - Sat, 17 Jan
Air Canada Logo
3:15 p.m. - 5:38 a.m.
PDX
-
YYZ
11h 23m2 stops
Air Canada Logo
8:05 a.m. - 2:40 p.m.
YYZ
-
PDX
9h 35m2 stops
C$ 392Air Canada
Thu, 8 Jan - Sat, 17 Jan
Air Canada Logo
3:15 p.m. - 5:38 a.m.
PDX
-
YYZ
11h 23m2 stops
Air Canada Logo
8:05 a.m. - 2:40 p.m.
YYZ
-
PDX
9h 35m2 stops
C$ 393Air Canada
Mon, 12 Jan - Fri, 16 Jan
Multiple Airlines Logo
6:34 p.m. - 6:47 a.m.
PDX
-
YYZ
9h 13m1 stop
Multiple Airlines Logo
7:55 p.m. - 11:04 a.m.
YYZ
-
PDX
42h 09m2 stops
C$ 397Multiple Airlines
Thu, 8 Jan - Sat, 17 Jan
Air Canada Logo
3:15 p.m. - 5:38 a.m.
PDX
-
YYZ
11h 23m2 stops
Air Canada Logo
9:00 a.m. - 2:40 p.m.
YYZ
-
PDX
8h 40m1 stop
C$ 400Air Canada
Mon, 12 Jan - Tue, 20 Jan
Multiple Airlines Logo
6:34 p.m. - 6:47 a.m.
PDX
-
YYZ
9h 13m1 stop
Multiple Airlines Logo
4:45 p.m. - 10:46 p.m.
YYZ
-
PDX
9h 01m1 stop
C$ 425Multiple Airlines
Thu, 8 Jan - Fri, 9 Jan
United Airlines Logo
3:50 p.m. - 1:28 p.m.
PDX
-
YUL
18h 38m2 stops
United Airlines Logo
4:45 p.m. - 10:32 p.m.
YUL
-
PDX
8h 47m1 stop
C$ 527United Airlines
Sun, 4 Jan - Thu, 8 Jan
United Airlines Logo
11:55 p.m. - 9:17 p.m.
PDX
-
YUL
18h 22m1 stop
United Airlines Logo
3:00 p.m. - 9:49 p.m.
YUL
-
PDX
9h 49m1 stop
C$ 554United Airlines
Thu, 29 Jan - Tue, 3 Feb
American Airlines Logo
10:15 p.m. - 3:20 p.m.
PDX
-
YUL
14h 05m2 stops
American Airlines Logo
7:30 a.m. - 8:27 p.m.
YUL
-
PDX
15h 57m2 stops
C$ 574American Airlines
Booking Insights

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 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$ 490 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is C$ 800 and C$ 793 respectively.

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 a flight from Portland to Ontario, you should book around 5 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Find deals

Good to know

Low seasonFebruary
Cheapest flightC$ 175
Most popular time to fly and prices are also 2% 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$ 161 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$ 433.

Reviews of the top airline 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 3195 reviews
7.1Comfort
6.1Entertainment
7.4Boarding
7.9Crew
6.2Food
Airline reviews

Liked in-flight wifi Did not like - nothing to complain, really. All good

10.0 ExcellentDan, Nov 2025
CCC - YYZ
Read more WestJet reviews

Liked in-flight wifi Did not like - nothing to complain, really. All good

The keg from Edmonton to Toronto My wife found it very cold. Other than that great flight.

Smooth flight Staff were courteous and welcoming upon entering and exiting the plane Pilot and crew provided frequent updates Leg space was not pleasant but manageable

Everything was good except I was a bit disappointed that I had to pay US $150 for bags.

Flight itself good .Landing at terminal3 and connections to terminal1,it is connections nightmare,specially for disable person

The seats very Uncomfortable, no meal and no entertainment for a 4Hours flight. Smooth Flight, Great Take off and landing. Superb crew!

The flight attendants were super! They created a cosy and warm flight atmosphere!

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.

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

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.

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

Information on your arrival and departure airports

Portland (PDX)