C$ 171 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 14/3. 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

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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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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

Wed, 29 Apr - Sun, 3 May
WestJet Logo
2:30 p.m. - 1:05 a.m.
PDX
-
YYZ
7h 35m
1 stop
WestJet Logo
6:10 a.m. - 1:50 p.m.
YYZ
-
PDX
10h 40m
2 stops
C$ 388WestJet
Fri, 15 May - Tue, 19 May
WestJet Logo
2:30 p.m. - 12:45 p.m.
PDX
-
YYZ
19h 15m
2 stops
WestJet Logo
6:10 a.m. - 1:50 p.m.
YYZ
-
PDX
10h 40m
2 stops
C$ 402WestJet
Sat, 28 Feb - Thu, 5 Mar
Multiple Airlines Logo
6:00 a.m. - 3:35 p.m.
PDX
-
YYZ
6h 35m
1 stop
Multiple Airlines Logo
8:35 p.m. - 9:13 a.m.
YYZ
-
PDX
15h 38m
1 stop
C$ 409Multiple Airlines
Mon, 2 Mar - Wed, 11 Mar
Multiple Airlines Logo
10:18 p.m. - 7:55 p.m.
PDX
-
YYZ
18h 37m
1 stop
Multiple Airlines Logo
1:30 p.m. - 8:58 a.m.
YYZ
-
PDX
22h 28m
2 stops
C$ 414Multiple Airlines
Sat, 28 Feb - Tue, 3 Mar
Alaska Airlines Logo
6:00 a.m. - 3:35 p.m.
PDX
-
YYZ
6h 35m
1 stop
Alaska Airlines Logo
4:45 p.m. - 11:44 p.m.
YYZ
-
PDX
9h 59m
1 stop
C$ 421Alaska Airlines
Wed, 29 Apr - Sun, 3 May
WestJet Logo
2:30 p.m. - 1:05 a.m.
PDX
-
YYZ
7h 35m
1 stop
WestJet Logo
6:15 a.m. - 1:50 p.m.
YYZ
-
PDX
10h 35m
1 stop
C$ 424WestJet
Fri, 15 May - Tue, 19 May
WestJet Logo
2:30 p.m. - 1:05 a.m.
PDX
-
YYZ
7h 35m
1 stop
WestJet Logo
6:15 a.m. - 1:50 p.m.
YYZ
-
PDX
10h 35m
1 stop
C$ 428WestJet
Tue, 24 Feb - Tue, 3 Mar
American Airlines Logo
9:44 p.m. - 10:44 p.m.
PDX
-
YUL
22h 00m
1 stop
American Airlines Logo
3:45 p.m. - 12:17 a.m.
YUL
-
PDX
11h 32m
1 stop
C$ 542American Airlines
Mon, 2 Mar - Tue, 3 Mar
Air Canada Logo
9:50 a.m. - 9:00 p.m.
PDX
-
YUL
8h 10m
1 stop
Air Canada Logo
7:30 a.m. - 2:40 p.m.
YUL
-
PDX
10h 10m
1 stop
C$ 544Air Canada
Sat, 14 Mar - Sat, 21 Mar
Air Canada Logo
11:59 p.m. - 3:13 p.m.
PDX
-
YTZ
12h 14m
2 stops
Air Canada Logo
12:30 p.m. - 10:45 p.m.
YTZ
-
PDX
13h 15m
2 stops
C$ 586Air Canada
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.

How much is a round-trip flight from Portland to Region of Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Portland to Region of Ontario departing in April.

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$ 479 (return) on average. On the other hand, the most expensive months are March and December, when the average cost of round-trip tickets is C$ 781 and C$ 741 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 2 weeks before departure, which saves you about 31% 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$ 171
Best time to beat the crowds but there is an average 5% increase in price.
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$ 159 on average. The most expensive time of day to fly to Ontario is generally at night, which is peak travel time and where the average cost of a ticket is C$ 159.

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 3253 reviews
7.9Crew
6.2Food
7.0Comfort
7.4Boarding
6.1Entertainment
Airline reviews

Everything was good except for flight delay, but it was because of the snow storm in the arrival airport.

8.0 ExcellentAnonymous, Dec 2025
MCO - YYZ
Read more WestJet reviews

Everything was good except for flight delay, but it was because of the snow storm in the arrival airport.

The flight was cancelled less than 24 hours before departure. The alternate flight was a day later going from Grenada to Toronto to Vancouver to Calgary to Montreal. 2 days in the air. Not serious, Very bad service

I like the wider seats, Plus lots of legroom, Lacking entertainment, no tv or screen to play with

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!

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

Information on your arrival and departure airports

Portland (PDX)