ONT - LIS

$390 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 9/21. 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.
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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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Cheap Flights from Ontario to Lisbon

 
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.

Recent round-trip flight deals from Ontario to Lisbon

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Lisbon.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
6:04 am - 8:20 amONT-LIS
18h 16m2 stops
United Airlines Logo
10:15 am - 10:35 pmLIS-ONT
19h 20m2 stops
$722United Airlines
Find Deal
Sat, Oct 18 - Wed, Oct 29
United Airlines Logo
9:35 am - 9:20 amONT-LIS
15h 45m2 stops
United Airlines Logo
11:25 am - 8:33 pmLIS-ONT
17h 08m2 stops
$731United Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 22
Delta Logo
3:05 pm - 5:50 pmONT-LIS
18h 45m2 stops
Delta Logo
10:00 am - 10:27 pmLIS-ONT
20h 27m2 stops
$801Delta
Find Deal
Tue, Jul 1 - Wed, Jul 23
Iberia Logo
2:34 pm - 4:05 pmONT-LIS
17h 31m2 stops
Iberia Logo
8:45 pm - 9:44 pmLIS-ONT
32h 59m2 stops
$982Iberia
Find Deal
Tue, Jul 22 - Wed, Aug 13
 Logo
5:10 am - 9:20 amONT-LIS
20h 10m3 stops
 Logo
12:55 pm - 12:14 pmLIS-ONT
31h 19m2 stops
$1,063
Find Deal
Tue, Jun 17 - Tue, Jun 24
Delta Logo
4:57 pm - 6:40 pmONT-LIS
17h 43m2 stops
Delta Logo
5:40 am - 5:10 pmLIS-ONT
19h 30m2 stops
$1,086Delta
Find Deal
Fri, Jun 6 - Thu, Jun 26
Iberia Logo
8:43 am - 11:25 pmONT-LIS
30h 42m2 stops
Iberia Logo
6:35 am - 11:36 pmLIS-ONT
25h 01m2 stops
$1,102Iberia
Find Deal
Fri, Sep 5 - Sun, Sep 21
 Logo
5:10 am - 9:20 amONT-LIS
20h 10m3 stops
 Logo
12:55 pm - 12:14 pmLIS-ONT
31h 19m2 stops
$1,232
Find Deal
Fri, Jun 6 - Thu, Jun 26
British Airways Logo
12:59 am - 4:05 pmONT-LIS
31h 06m2 stops
British Airways Logo
6:35 am - 11:02 pmLIS-ONT
24h 27m2 stops
$1,294British Airways
Find Deal
Mon, Jun 16 - Tue, Jun 24
British Airways Logo
12:59 am - 11:50 amONT-LIS
26h 51m2 stops
British Airways Logo
6:35 am - 6:53 pmLIS-ONT
20h 18m2 stops
$2,967British Airways
Find Deal
Thu, Jul 17 - Wed, Jul 23
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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.

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 March, where tickets cost $708 (return) on average. On the other hand, the most expensive months are February and July, where the average cost of round-trip tickets is $2,482 and $1,765 respectively.

Good to know

Low seasonAugust
High seasonJune
Cheapest flight$390
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 2% 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 $390 for a one-way ticket and $722 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.

  • 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 $1,242 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,023 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.

Top 3 airlines serving 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.
8.0
DeltaOverall score based on 7937 reviews
7.9Comfort
8.5Crew
7.9Entertainment
7.3Food
8.2Boarding
Airline reviews

Delta flight was on time, seats were comfortable, and crew was nice.

8.0 ExcellentAnonymous, Apr 2025LAX - DEN
Read more Delta reviews

Delta flight was on time, seats were comfortable, and crew was nice.

Bathrooms dirty sinks clogged. No one seemed to clean them. Plane very old

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

Overall Delta was amazing from automatically booking us on the next flight once we missed our connection due to a delay to the constant communication throughout the entire process. We will continue to fly Delta going forward more and pay a little more if needed.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Seats were comfortable. It’s was so cold and very uncomfortable. I paid 2000 miles for wifi service that was choppy the whole flight. Would like to be reimbursed for my miles Food was so disappointing. Three cold and terrible meals for $3000 round trip. This needs to be better.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

Smooth flight. As always dinner could have been more generous. Breakfast was great.

AWFUL. I have had the experience of traveling with many airlines across the world, and hands down United Airlines is the worst. Not one flight was on time, and I don’t think I met one crew member or staff member who wasn’t rude.

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

Crew was pleasant and efficient. The speaker system for instructions was hard to understand

Poor air traffic controller staffing led to a 50%reduction on flights so we got to wait 4 hrs for our flight! Very disorganized at the gate Poor communication with customers

No Charging ports for personal electronics, which were required to use wifi entertainment.

It was okay until this flight had mechanical problems which made us miss our connecting flight and my friend and I had to pay an extra $500 each to get to our next location at a later time.

They are a great airline, and i enjoying flying with them. However my experience with booking through Kayak was a horrible experience. With all the restrictions and glitches of website. My entire bookings by kayak was wrong. And there was no possible way of fixing anything with them, because they hand over responsibility to the airline after purchase is made. Will not be booking through Kayak again and will inform my family and friends not to as well.

I liked nothing about this flight nor the incredible lack of service and communication on this flight from the Captain to every staff member. Arrogant, entitled and lacking any kind of basic customer service

Efficient board despite a 100% sold out flight. It’s crowded on the plane but crew was working hard to get us off the ground on time and served dinner and breakfast. Food was good.

I booked my flight ni November and was placed on standby? How does this happen. Flight was 1 1/2 hours late departure plane was switched to a smaller plane easy to tell this is a government run company they don’t care about anyone

Plane was old, cabin was small, overhead bins were small, seats really uncomfortable, no seat-back entertainment

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

Information on your arrival and departure airports

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