$333 Find Cheap Flights from Ontario to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Portugal departing on 7/29. 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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Best Portugal Flight Deals from Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$596
Porto
Porto2 stops$878
Lisbon
Lisbon2 stops$596
Porto
Porto2 stops$878

Cheap Flights from Ontario to Portugal

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Portugal 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 Ontario to Portugal

Wed, Sep 17 - Wed, Oct 1
British Airways Logo
4:45 pm - 11:10 pmONT-LIS
22h 25m2 stops
British Airways Logo
8:45 pm - 11:59 pmLIS-ONT
35h 14m2 stops
$596British Airways
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Tue, Dec 2 - Sat, Dec 13
United Airlines Logo
6:04 am - 8:10 amONT-LIS
18h 06m2 stops
United Airlines Logo
11:00 am - 10:26 pmLIS-ONT
43h 26m2 stops
$604United Airlines
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Tue, Sep 9 - Thu, Sep 25
Iberia Logo
10:54 am - 11:25 pmONT-LIS
28h 31m2 stops
Iberia Logo
6:35 am - 6:54 pmLIS-ONT
20h 19m2 stops
$690Iberia
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Tue, Sep 9 - Wed, Sep 24
Iberia Logo
8:15 am - 11:25 pmONT-LIS
31h 10m2 stops
Iberia Logo
12:30 pm - 6:54 pmLIS-ONT
38h 24m2 stops
$695Iberia
Find Deal
Sat, Sep 13 - Tue, Sep 23
Air Canada Logo
5:10 am - 11:05 amONT-LIS
45h 55m2 stops
Air Canada Logo
12:55 pm - 12:32 pmLIS-ONT
31h 37m2 stops
$758Air Canada
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Fri, Aug 8 - Thu, Aug 14
Delta Logo
1:15 pm - 2:35 pmONT-LIS
17h 20m2 stops
Delta Logo
5:40 am - 5:11 pmLIS-ONT
19h 31m2 stops
$785Delta
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Fri, Sep 12 - Wed, Sep 24
Delta Logo
12:00 pm - 2:35 pmONT-LIS
18h 35m2 stops
Delta Logo
5:40 am - 4:14 pmLIS-ONT
18h 34m2 stops
$802Delta
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Tue, Sep 9 - Sat, Sep 20
Air Canada Logo
5:10 am - 9:20 amONT-LIS
20h 10m2 stops
Air Canada Logo
12:55 pm - 5:29 pmLIS-ONT
36h 34m2 stops
$835Air Canada
Find Deal
Tue, Sep 9 - Fri, Sep 26
American Airlines Logo
12:46 pm - 11:00 pmONT-LIS
26h 14m2 stops
American Airlines Logo
8:25 am - 10:33 pmLIS-ONT
22h 08m2 stops
$880American Airlines
Find Deal
Sat, Sep 13 - Fri, Sep 26
American Airlines Logo
2:54 pm - 9:05 amONT-LIS
34h 11m2 stops
American Airlines Logo
8:25 am - 10:33 pmLIS-ONT
22h 08m2 stops
$896American Airlines
Find Deal
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KAYAK's insights & trends for Ontario to Portugal flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Portugal, 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 Ontario to Portugal is March, when tickets cost $708 (return) on average. On the other hand, the most expensive months are February and December, when the average cost of round-trip tickets is $2,482 and $1,424 respectively.

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

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

Your flight ticket price will generally be cheaper if you fly to Portugal on a Tuesday and more expensive on a Saturday. On your return trip to Ontario, you should consider flying back on a Thursday, and avoid Tuesdays for better deals.


Good to know

Low seasonAugust
High seasonApril
Cheapest flight$333
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Ontario to Lisbon

FAQs - booking Portugal flights

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

    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 Ontario to Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Portugal 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 Ontario to Portugal?

    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 Ontario to Portugal 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 Ontario to Portugal?

    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 Ontario to Portugal 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 Portugal?

    The cheapest time of day to fly to Portugal is generally in the evening, when round-trip flights cost $1,054 on average. Morning departures are around 5% more expensive than evening flights, on average. The most expensive time of day to fly to Portugal is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,230.

Reviews of the top airline flying from Ontario to Portugal

 
Need help choosing which airline to fly with from Ontario to Portugal? 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.
7.4
United AirlinesOverall score based on 8809 reviews
7.0Entertainment
7.7Boarding
8.1Crew
6.6Food
7.3Comfort
Airline reviews

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

2.0 MediocreAnonymous, Jun 2025LAX - SEA
Read more United Airlines reviews

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

The food was the worst I’ve had on any flight I’ve ever been on.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Breakfast was not loaded at SFO due to catering company change. Seems like a major airline at a major hub would have thought of something else or warned passengers to pick up food before boarding a 3 hour flight.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

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

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