ONT - LIS

$384 Find Cheap Flights from Ontario to Lisbon - Compare and Save

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 11/24. 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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Everything you should know

Cheapest round-trip
$754
Typical prices: $515-$676
United Airlines
Sun 11/15Thu 11/26
ONT - LIS • 2 stops
Cheapest one-way
$384
United Airlines
Tue 11/24
ONT - LIS • 2 stops
Top airlines
Cheapest • from $771 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Lisbon. You'll need at least 2 connections.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Lisbon!
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

Sun, Nov 15 - Thu, Nov 26
United Airlines Logo
6:00 am - 10:05 am-
20h 05m
United Airlines Logo
5:00 am - 7:42 pm-
22h 42m
$754United Airlines
Sat, Nov 7 - Tue, Nov 24
United Airlines Logo
7:00 am - 10:05 am-
43h 05m
United Airlines Logo
12:50 pm - 3:29 pm-
58h 39m
$768United Airlines
Sun, Nov 8 - Tue, Nov 17
United Airlines Logo
6:00 am - 8:10 am-
18h 10m
United Airlines Logo
10:15 am - 9:40 pm-
19h 25m
$771United Airlines
Tue, Oct 13 - Tue, Nov 3
United Airlines Logo
6:00 am - 8:20 am-
18h 20m
United Airlines Logo
10:15 am - 9:40 pm-
19h 25m
$771United Airlines
Mon, Oct 19 - Wed, Nov 4
United Airlines Logo
6:07 am - 9:20 am-
19h 13m
United Airlines Logo
10:15 am - 8:51 pm-
18h 36m
$774United Airlines
Tue, Nov 3 - Tue, Nov 17
Multiple Airlines Logo
9:25 am - 9:20 am-
15h 55m
Multiple Airlines Logo
11:20 am - 8:51 pm-
17h 31m
$783Multiple Airlines
Tue, Oct 13 - Wed, Oct 21
United Airlines Logo
6:00 am - 8:20 am-
18h 20m
United Airlines Logo
10:25 am - 10:49 pm-
20h 24m
$801United Airlines
Mon, Oct 19 - Wed, Oct 28
United Airlines Logo
6:07 am - 9:20 am-
19h 13m
United Airlines Logo
10:15 am - 9:40 pm-
18h 25m
$804United Airlines
Sat, Nov 7 - Tue, Nov 24
Delta Logo
12:18 pm - 2:40 pm-
18h 22m
Delta Logo
5:00 am - 5:13 pm-
20h 13m
$814Delta
Wed, Oct 21 - Tue, Oct 27
United Airlines Logo
8:03 am - 9:20 am-
17h 17m
United Airlines Logo
5:00 am - 6:01 pm-
20h 01m
$818United Airlines
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 is the cheapest month to fly from Ontario to Lisbon?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Lisbon, 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 Lisbon is December, where tickets cost $0 (return) on average. On the other hand, the most expensive months are April and June, where the average cost of round-trip tickets is $1,494 and $1,165 respectively.

Good to know

Low season

October

Cheapest flight

$384
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 19% lower on average.
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 5 days, the lowest price for a flight from Ontario to Lisbon was $384 for a one-way ticket and $771 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?

    Star Alliance is the only airline alliance operating flights between Ontario and Lisbon.

  • 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 10060 reviews
6.7Food
8.1Crew
7.1Entertainment
7.7Boarding
7.3Comfort
Airline reviews

The pilot was late so we didn’t take off til almost 2 hours late.

8.0 ExcellentAnonymous, Jul 2026
Read more United Airlines reviews

The pilot was late so we didn’t take off til almost 2 hours late.

Flight was late, the only reason I almost missed my flight was that my connection was also late.

Baggage claim signs were not updated with my flight information, so I had to guess. The app wasn't updated either.

It was a short, comfortable flight. It did leave an hour late due to the pilot having to be replaced (family emergency) but that didn’t inconvenience myself & my friend. The situation was explained, eventually.

The seats were very uncomfortable. I paid for the front economy. i swear they added a row of seats in there. It was so tight, that I could measure the distance between my seat and the one in front from my elbow to the tips of my fingers plus six inches. The seat cushion was completely worn out. The dinner was very good. Thank you for having a vegetarian option as a standard. But breakfast was nothing but sugar. that's not food. The crew was crabby and rude, especially in regards to coming to the back gallery. And the entertainment choice: why would you put violent movies on the choice? the Godfather? Some movies with black women being beaten over the head with clubs? What the heck? You know that when there is a movie on a plane, everyone gets to watch it. Why choose the most violent titles possible? The total number of movies were very limited, and the television, even more so. No games were available on the set. The wellness section was nice, thank you. I appreciated a galley in the middle where I could stand. The seats were unbearable.

UA594 was delayed multiple times. I ended up getting picked up so I can make it in time for work 6AM on Monday, 7/6/2026

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

Excellent communication from the staff. We actually arrived early. Very friendly and professional staff.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

OK, I don’t expect much from coach class. Everything basically is pretty lousy. But at least I expect my bloody luggage to get from A to B. Tap Airlines lost my luggage and it has been more than 24 hours in Lisbon and they still have not located my luggage. On top of that, they are incredibly unhelpful. They feel actually dismissive. This lousy customer service.

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

Information on your arrival and departure airports