$167 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 5/16. 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.
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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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Flights Deals

Cheap Flight Deals from Portland to Ontario (PWM-CAON)

 
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.

Recent round-trip flight deals from Portland to Ontario

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Portland to Ontario.
Discover the best prices for you by selecting your travel dates on KAYAK.
Delta Logo
5:30 pm - 10:54 pmPWM-YYZ
5h 24m1 stop
Delta Logo
2:30 pm - 11:21 pmYYZ-PWM
8h 51m1 stop
$390Delta
Find Deal
Fri, May 30 - Sun, Jun 1
American Airlines Logo
5:50 am - 2:33 pmPWM-YYZ
8h 43m2 stops
American Airlines Logo
7:35 am - 8:55 pmYYZ-PWM
13h 20m1 stop
$400American Airlines
Find Deal
Thu, May 29 - Thu, Jun 5
United Airlines Logo
4:04 pm - 6:35 amPWM-YYZ
14h 31m2 stops
United Airlines Logo
5:30 pm - 11:28 pmYYZ-PWM
5h 58m1 stop
$424United Airlines
Find Deal
Fri, Jun 13 - Fri, Jun 20
United Airlines Logo
4:04 pm - 7:50 amPWM-YYZ
15h 46m2 stops
United Airlines Logo
12:05 pm - 11:57 pmYYZ-PWM
11h 52m2 stops
$458United Airlines
Find Deal
Fri, Jun 13 - Fri, Jun 20
WestJet Logo
5:00 pm - 8:58 amPWM-YYZ
15h 58m1 stop
WestJet Logo
6:30 am - 4:03 pmYYZ-PWM
9h 33m1 stop
$465WestJet
Find Deal
Tue, May 13 - Fri, May 16
WestJet Logo
6:05 am - 6:12 amPWM-YYZ
24h 07m2 stops
WestJet Logo
10:25 pm - 11:21 pmYYZ-PWM
24h 56m2 stops
$502WestJet
Find Deal
Sat, May 31 - Mon, Jun 2
 Logo
2:35 pm - 7:57 pmPWM-YUL
29h 22m3 stops
 Logo
6:45 am - 11:35 amYUL-PWM
28h 50m2 stops
Thu, Jun 5 - Sat, Jun 14
 Logo
2:35 pm - 7:57 pmPWM-YUL
29h 22m3 stops
 Logo
6:45 am - 11:35 amYUL-PWM
28h 50m3 stops
Thu, Jun 5 - Sat, Jun 14
Air Canada Logo
6:10 am - 1:47 pmPWM-YYZ
7h 37m1 stop
Air Canada Logo
2:00 pm - 11:28 pmYYZ-PWM
9h 28m2 stops
$581Air Canada
Find Deal
Fri, May 30 - Sun, Jun 1
Air Canada Logo
6:00 am - 4:54 pmPWM-YYZ
10h 54m2 stops
Air Canada Logo
4:00 pm - 11:27 pmYYZ-PWM
7h 27m2 stops
$586Air Canada
Find Deal
Tue, May 20 - Tue, May 27
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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 September, when tickets cost $116 (return) on average. On the other hand, the most expensive months are April and May, when the average cost of round-trip tickets is $542 and $534 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 Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Portland to Ontario. For your return ticket, we recommend flying on a Saturday and avoiding Sundays for the best deals.


Good to know

Low seasonMarch
High seasonNovember
Cheapest flight$167
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 22% 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 travelers 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 in the evening, when round-trip flights cost $457 on average. Morning departures are around 9% more expensive than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is $500.

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
American AirlinesOverall score based on 10000 reviews
6.9Entertainment
8.0Crew
7.5Boarding
6.5Food
7.2Comfort
Airline reviews

Several delays. Next flight was worse. Did not arrive home until 2am PT

4.0 OkayDuncan, Apr 2025SAV - DFW
Read more American Airlines reviews

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

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

Good. Would be better if the carry on baggage was free.

Horrible. I checked out myself that it seems that I can have a free carry-on. But they ask me to pay $75 when we are nearly boarding. It was tricky during check out that make you mistake that you can have a carry-on beside your personal item. Also they ask $75 in the airport instead of $35 during checkout. So the whole process is designed to make you this mistake

Westjet is one of the worst airlines in the world. 100% guaranteed to have flight delays and flight cancellations. Will never book again with Westjet.

Plane should have entertainment, instead of people paying to use wifi

Westjet has been absolutely terrible! Flights continually cancelled. Took 4 days to get home. Would have been 5, but we booked last flight with another airline after our Westjet flight was cancelled. Even pilot on original flight looked frustrated! Funny how they say cancelation is weather related, but they still have more than 1 other flight leaving to same destination on same day, but of course those are all full. This happened more than once on this trip. Two weather related cancelations and 1 mechanical. Not sure if the last flight even went ahead. Felt so sorry for families with kids and babies, and the older travellers. Felt like we lived out of suitcases and airports for days - SO RIDICULOUS! Next to no help from Westjet staff at airports, but it appears there is nothing they can help you with. Westjet has made it that they are unreachable when you need them! People were getting extremely frustrated, and rightfully so. Additional costs to us really added up, but Westjet literally DOESN'T CARE! Final straw was when we had to pay $1280 on a different airline (economy) trying to get home after another cancelled flight. Westjet will be refunding us a whole $140! Can't believe how this airline operates. We will never, ever use them again!

The only thing I didn’t like was how far away the gate was. I would have requested a wheelchair had I known.

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

Information on your arrival and departure airports

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