ONT - LIS

$278 Find Cheap Flights from Ontario to Lisbon

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 Lisbon departing on 12/11. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Lisbon, 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 Ontario to Lisbon, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Lisbon (ONT-LIS)

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

Wed, Feb 4 - Wed, Feb 11
Delta Logo
6:00 am - 8:00 amONT-LIS
18h 00m2 stops
Delta Logo
10:00 am - 9:14 pmLIS-ONT
19h 14m2 stops
$485Delta
Find Deal
Tue, Nov 18 - Tue, Dec 9
United Airlines Logo
7:00 am - 9:20 amONT-LIS
18h 20m2 stops
United Airlines Logo
5:00 am - 8:42 pmLIS-ONT
23h 42m2 stops
$500United Airlines
Find Deal
Wed, Jan 7 - Wed, Jan 21
United Airlines Logo
7:00 am - 8:10 amONT-LIS
17h 10m2 stops
United Airlines Logo
5:00 am - 8:58 pmLIS-ONT
23h 58m2 stops
$504United Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 19
Multiple Airlines Logo
7:00 am - 9:20 amONT-LIS
18h 20m2 stops
Multiple Airlines Logo
11:20 am - 10:26 pmLIS-ONT
19h 06m2 stops
$613Multiple Airlines
Find Deal
Thu, Feb 12 - Fri, Feb 20
Multiple Airlines Logo
5:40 am - 7:55 amONT-LIS
18h 15m3 stops
Multiple Airlines Logo
10:55 am - 9:59 pmLIS-ONT
19h 04m2 stops
$689Multiple Airlines
Find Deal
Wed, Feb 4 - Mon, Feb 9
Iberia Logo
8:43 am - 11:50 amONT-LIS
19h 07m2 stops
Iberia Logo
8:45 pm - 9:33 amLIS-ONT
20h 48m2 stops
$733Iberia
Find Deal
Sat, Oct 25 - Fri, Oct 31
British Airways Logo
4:49 pm - 11:30 pmONT-LIS
22h 41m2 stops
British Airways Logo
6:45 pm - 10:42 pmLIS-ONT
34h 57m2 stops
$760British Airways
Find Deal
Sat, Oct 25 - Fri, Oct 31
British Airways Logo
2:51 pm - 11:30 pmONT-LIS
24h 39m2 stops
British Airways Logo
3:50 pm - 10:42 pmLIS-ONT
37h 52m2 stops
$775British Airways
Find Deal
Mon, Oct 6 - Sat, Oct 25
American Airlines Logo
2:51 pm - 5:55 pmONT-LIS
19h 04m2 stops
American Airlines Logo
7:10 am - 11:58 amLIS-ONT
36h 48m2 stops
$864American Airlines
Find Deal
Sun, Oct 5 - Sat, Oct 25
American Airlines Logo
7:16 pm - 9:05 amONT-LIS
29h 49m2 stops
American Airlines Logo
7:10 am - 11:58 amLIS-ONT
36h 48m2 stops
$865American Airlines
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $485 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$485
Delta
Wed 2/4Wed 2/11
ONT - LIS • 2 stops
Cheapest one-way
$278
Delta
Thu 12/11
ONT - LIS • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Lisbon!
Booking Insights

KAYAK's insights & trends for Ontario to Lisbon flights

Get data-powered insights and trends into flights from Ontario to Lisbon 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 Lisbon?

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

Your flight ticket price will generally be cheaper if you fly to Lisbon 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$278
Best time to beat the crowds with an average 35% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Ontario to Lisbon

When to book flights from Ontario to Lisbon

Are your dates flexible? Find out the best times to travel from Ontario to Lisbon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Lisbon

  • What is the cheapest flight from Ontario to Lisbon?

    In the last 3 days, the lowest price for a flight from Ontario to Lisbon was $278 for a one-way ticket and $485 for a round-trip.

  • Do I need a passport to fly between Ontario and Lisbon?

    A passport is required to fly from Ontario to Lisbon.

  • Which aircraft models fly most regularly from Ontario to Lisbon?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Lisbon?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Lisbon, with oneworld being the most commonly used for this route.

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

    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 Lisbon.

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

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

    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 to Lisbon with an airline and back to Ontario with another airline. Booking your flights between Ontario and LIS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Lisbon?

    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 to Lisbon from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Lisbon

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Lisbon. 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 Ontario to Lisbon? 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 8924 reviews
7.1Entertainment
7.3Comfort
8.1Crew
7.7Boarding
6.6Food
Airline reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

2.0 MediocreAnonymous, Sep 2025SFO - MEX
Read more United Airlines reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

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

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.