$330 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 10/18. 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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Cheap Flights from Ontario to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$529
Porto
Porto2 stops$644
Lisbon
Lisbon2 stops$529
Porto
Porto2 stops$644

Book Cheap Ontario to Portugal Plane Tickets

 
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, Nov 5 - Thu, Nov 13
Delta Logo
7:05 am - 8:00 amONT-LIS
16h 55m2 stops
Delta Logo
11:15 am - 10:41 pmLIS-ONT
19h 26m2 stops
$529Delta
Find Deal
Wed, Nov 5 - Sat, Nov 15
Delta Logo
7:05 am - 8:00 amONT-LIS
16h 55m2 stops
Delta Logo
5:30 am - 7:42 pmLIS-ONT
22h 12m2 stops
$540Delta
Find Deal
Sat, Nov 8 - Tue, Nov 18
British Airways Logo
3:08 pm - 9:50 amONT-LIS
58h 42m2 stops
British Airways Logo
7:40 pm - 10:29 pmLIS-ONT
34h 49m2 stops
$543British Airways
Find Deal
Tue, Dec 2 - Mon, Dec 8
Iberia Logo
6:10 am - 7:40 amONT-LIS
17h 30m2 stops
Iberia Logo
6:45 pm - 9:34 amLIS-ONT
22h 49m2 stops
$617Iberia
Find Deal
Fri, Nov 28 - Sun, Dec 7
United Airlines Logo
6:09 am - 8:10 amONT-LIS
18h 01m2 stops
United Airlines Logo
5:00 am - 8:42 pmLIS-ONT
23h 42m2 stops
$639United Airlines
Find Deal
Thu, Nov 13 - Fri, Nov 21
United Airlines Logo
6:05 am - 9:30 amONT-OPO
19h 25m2 stops
United Airlines Logo
6:00 am - 9:37 pmOPO-ONT
23h 37m2 stops
$644United Airlines
Find Deal
Sun, Oct 19 - Sun, Oct 26
British Airways Logo
12:48 pm - 11:05 pmONT-LIS
26h 17m2 stops
British Airways Logo
7:05 am - 11:59 pmLIS-ONT
23h 54m2 stops
$656British Airways
Find Deal
Tue, Sep 16 - Wed, Sep 24
Iberia Logo
2:54 pm - 4:05 pmONT-LIS
17h 11m2 stops
Iberia Logo
6:35 am - 6:54 pmLIS-ONT
20h 19m2 stops
$690Iberia
Find Deal
Wed, Nov 12 - Sun, Nov 16
KLM Logo
6:00 am - 6:15 pmONT-FAO
28h 15m2 stops
KLM Logo
9:55 am - 4:14 pmFAO-ONT
38h 19m2 stops
$781KLM
Find Deal
Wed, Nov 12 - Sun, Nov 16
KLM Logo
7:00 am - 8:25 amONT-FAO
41h 25m2 stops
KLM Logo
7:55 pm - 4:14 pmFAO-ONT
28h 19m2 stops
$782KLM
Find Deal
Booking Insights

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’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 seasonMarch
Cheapest flight$330
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 5% increase in price.
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 8896 reviews
8.1Crew
7.1Entertainment
7.7Boarding
7.3Comfort
6.6Food
Airline reviews

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

6.0 GoodLeilani, Jul 2025SFO - KOA
Read more United Airlines reviews

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

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.

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

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