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 10/20. 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

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

Everything you should know

Cheapest round-trip
$754
Typical prices: $515-$676
United Airlines
Tue 11/3Tue 11/17
ONT - LIS • 2 stops
Cheapest one-way
$384
United Airlines
Tue 10/20
ONT - LIS • 2 stops
Top airlines
Cheapest • from $754 (round-trip)
Best reviews • 7.8 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
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!
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

Tue, Nov 3 - Tue, Nov 17
United Airlines Logo
6:46 am - 9:50 am
ONT
-
LIS
19h 04m
2 stops
United Airlines Logo
1:00 pm - 6:29 pm
LIS
-
ONT
37h 29m
2 stops
$754United Airlines
Sun, Nov 1 - Wed, Nov 18
United Airlines Logo
5:00 am - 8:10 am
ONT
-
LIS
19h 10m
2 stops
United Airlines Logo
1:00 pm - 12:01 pm
LIS
-
ONT
31h 01m
2 stops
$755United Airlines
Sat, Oct 31 - Wed, Nov 18
Delta Logo
5:05 pm - 8:00 am
ONT
-
LIS
31h 55m
2 stops
Delta Logo
5:30 am - 4:12 pm
LIS
-
ONT
18h 42m
2 stops
$767Delta
Mon, Nov 2 - Mon, Nov 16
Delta Logo
9:55 am - 3:10 pm
ONT
-
LIS
21h 15m
2 stops
Delta Logo
12:20 pm - 4:12 pm
LIS
-
ONT
35h 52m
2 stops
$779Delta
Sat, Oct 31 - Mon, Nov 16
Delta Logo
5:05 pm - 8:00 am
ONT
-
LIS
31h 55m
2 stops
Delta Logo
12:20 pm - 4:12 pm
LIS
-
ONT
35h 52m
2 stops
$780Delta
Thu, Oct 29 - Wed, Nov 18
United Airlines Logo
6:46 am - 11:00 am
ONT
-
LIS
21h 14m
2 stops
United Airlines Logo
1:00 pm - 6:29 pm
LIS
-
ONT
37h 29m
2 stops
$809United Airlines
Fri, Oct 30 - Thu, Nov 12
Delta Logo
1:00 pm - 3:10 pm
ONT
-
LIS
19h 10m
2 stops
Delta Logo
5:30 am - 4:12 pm
LIS
-
ONT
18h 42m
2 stops
$817Delta
Sun, Nov 1 - Sat, Nov 14
Delta Logo
9:55 am - 11:20 am
ONT
-
LIS
41h 25m
2 stops
Delta Logo
5:30 am - 4:12 pm
LIS
-
ONT
18h 42m
2 stops
$818Delta
Thu, Oct 29 - Tue, Nov 17
Delta Logo
7:00 am - 9:00 am
ONT
-
LIS
19h 00m
2 stops
Delta Logo
11:15 am - 10:14 pm
LIS
-
ONT
18h 59m
2 stops
$821Delta
Sat, Oct 31 - Sat, Nov 14
Delta Logo
5:05 pm - 11:20 am
ONT
-
LIS
59h 15m
2 stops
Delta Logo
5:30 am - 4:12 pm
LIS
-
ONT
18h 42m
2 stops
$823Delta
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.

How much is a round-trip flight from Ontario to Lisbon?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Lisbon departing in November.

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 seasonNovember
Cheapest flight$384
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 20% 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 $754 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, and Star Alliance are the airline alliances operating flights between Ontario and Lisbon, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Lisbon, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Lisbon are Delta and United Airlines. With an average price for the route of $1,282 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $727 and an overall rating of 7.4.

  • 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 airlines 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.
7.8
DeltaOverall score based on 8423 reviews
8.5Crew
7.8Comfort
7.2Food
8.1Boarding
7.8Entertainment
Airline reviews

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

4.0 OkayAndrew, Jun 2026
LAX - JFK
Read more Delta reviews

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Flight delayed four separate times. I’m now one hour hours late to landing.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

N Everything was perfect from boarding to assistance to baggage in Tampa

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

I was promised by United Airline (operated by ANA) that I will be seated together with my kids as I am the only adult flying with two minors. We did not get seats together in our 11 hours flight from LA to Tokyo. When asked at the gate, ANA representative said United Airline should have informed them that there is a parent flying with two minors. He said they can’t do anything in the system as the flight is full. He ask me to ask passengers next to me and the kids if they are willing to change seats. This is ridiculous! However, I went in the flight and asked other passages but no one willing to change seats. 11 hours and we were seating separately. I was very disappointed with this. It made things super inconvenient for me.

Service was professional and quick. Premium economy seat was comfortable given the class

It was perfect! United Airlines staff was extremely caring, super friendly and professional

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Over 2.5 hour maintenance delay on first morning flight with no acknowledgement, compensation or even gesture of good will. Aircraft had overnighted at airport so issue should have been addressed prior to boarding. Over 3.5 hours before first slow and deliberate beverage service.

United has maintenance issues and can then never recover. No operations ability and simple issues always turn into multiple hours long cascading delays. Worst airline on earth.

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

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

Information on your arrival and departure airports