$150 Find Cheap Flights from Las Vegas to Ontario - 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 Las Vegas to Ontario departing on 9/24. 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.
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Cheap Flights from Las Vegas to Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Toronto
Toronto2 stops$248
Ottawa
Ottawa1 stop$325
Toronto
Toronto2 stops$248
Ottawa
Ottawa1 stop$325

Book Cheap Las Vegas to Ontario Plane Tickets

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

Fri, Sep 11 - Mon, Sep 14
WestJet Logo
1:45 pm - 5:10 am
LAS
-
YYZ
12h 25m
2 stops
WestJet Logo
10:00 am - 3:30 pm
YYZ
-
LAS
8h 30m
1 stop
$248WestJet
Fri, Sep 4 - Tue, Sep 8
WestJet Logo
8:30 am - 11:59 pm
LAS
-
YYZ
12h 29m
2 stops
WestJet Logo
10:50 am - 5:15 pm
YYZ
-
LAS
9h 25m
1 stop
$249WestJet
Fri, Nov 20 - Sun, Nov 29
WestJet Logo
8:00 am - 10:43 pm
LAS
-
YYZ
11h 43m
2 stops
WestJet Logo
9:45 am - 11:57 am
YYZ
-
LAS
5h 12mnonstop
$253WestJet
Fri, Sep 4 - Tue, Sep 8
Multiple Airlines Logo
8:30 am - 11:59 pm
LAS
-
YYZ
12h 29m
2 stops
Multiple Airlines Logo
8:35 pm - 10:22 pm
YYZ
-
LAS
4h 47mnonstop
$254Multiple Airlines
Sun, Sep 20 - Sat, Oct 3
WestJet Logo
8:30 am - 8:05 pm
LAS
-
YYZ
8h 35m
1 stop
WestJet Logo
10:00 am - 5:15 pm
YYZ
-
LAS
10h 15m
1 stop
$255WestJet
Tue, Sep 29 - Tue, Oct 6
Air Canada Logo
11:25 pm - 11:50 am
LAS
-
YTZ
9h 25m
1 stop
Air Canada Logo
4:30 pm - 10:23 pm
YTZ
-
LAS
8h 53m
1 stop
$324Air Canada
Thu, Dec 10 - Sun, Dec 13
Multiple Airlines Logo
2:35 pm - 12:35 am
LAS
-
YUL
7h 00m
1 stop
Multiple Airlines Logo
6:45 am - 11:57 am
YUL
-
LAS
8h 12m
1 stop
$329Multiple Airlines
Tue, Dec 8 - Fri, Dec 11
Porter Airlines Logo
2:35 pm - 12:35 am
LAS
-
YUL
7h 00m
1 stop
Porter Airlines Logo
5:25 pm - 10:37 pm
YUL
-
LAS
8h 12m
1 stop
$332Porter Airlines
Thu, Dec 10 - Mon, Dec 14
Porter Airlines Logo
2:35 pm - 12:35 am
LAS
-
YUL
7h 00m
1 stop
Porter Airlines Logo
5:25 pm - 10:37 pm
YUL
-
LAS
8h 12m
1 stop
$334Porter Airlines
Tue, Sep 1 - Sat, Sep 12
Air Canada Logo
11:25 pm - 10:06 am
LAS
-
YTZ
7h 41m
1 stop
Air Canada Logo
5:30 pm - 10:23 pm
YTZ
-
LAS
7h 53m
1 stop
$373Air Canada
Booking Insights

KAYAK's insights & trends for Las Vegas to Ontario flights

Get data-powered insights and trends into flights from Las Vegas to Ontario to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Las Vegas to Region of Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Las Vegas to Region of Ontario departing in September.

What is the cheapest Las Vegas to Ontario flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ontario from Las Vegas found in the last 5 days was to Toronto, at $139 round-trip. The most popular route is from Las Vegas (LAS) to Toronto Pearson Intl Airport (YYZ), and the cheapest round-trip airline ticket found on this route in the last 5 days was $139.

What is the cheapest time of day to fly to Ontario?

The average price for all round-trip flights from Las Vegas to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Ontario is generally at night, when round-trip flights cost $368 on average. Morning departures are around 39% more expensive than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is $515.

Can I save money by flying with a layover from Las Vegas to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $380, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Las Vegas to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Las Vegas to Ontario, 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 Las Vegas to Ontario is January, when tickets cost $53 (return) on average. On the other hand, the most expensive months are May and July, when the average cost of round-trip tickets is $132 and $120 respectively.

What’s the cheapest day of the week to fly from Las Vegas to Ontario?

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

Your flight ticket price will generally be cheaper if you fly to Ontario on a Wednesday and more expensive on a Sunday. On your return trip to Las Vegas, you should consider flying back on a Wednesday, and avoid Thursdays for better deals.

How far in advance should I book a flight from Las Vegas to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Las Vegas to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Las Vegas to Ontario, you should book around 3 weeks before departure, which saves you about 57% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$150
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Las Vegas to Hamilton

FAQs - booking Ontario flights

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

    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 Las Vegas to Ontario.

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

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

    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 Las Vegas to Ontario 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 Las Vegas to Ontario?

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

Reviews of the top 5 airlines serving from Las Vegas to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Las Vegas to Ontario. 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 Las Vegas to Ontario? 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.
7.9
Porter AirlinesOverall score based on 442 reviews
8.2Boarding
7.5Food
8.6Crew
7.9Comfort
6.9Entertainment
Airline reviews

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

6.0 GoodHarsh, Apr 2026
JFK - YYZ
Read more Porter Airlines reviews

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

The flight booking code given by Kayak was not the correct one used by the airline. I had to call to get the correct one. It was never sent to me. Totally unacceptable!

Much roomer than air Canada! Great flight for the price. No complaints

As a first time flyer with Porter I was happy with the service and comfort of the airline.

Other than wifi no on board entertainment. Will use them again, roomier seats than other airlines and snacks and beverages, better than average

I like it, but the food isn't good. They need to offer more simple things. This bowls that have so many things your don't know what your are eating. The milenials like it, no the rest. And last but not least, they allowed somebody have a huge dog, vey agressive and fidgety in the flight. That's horrible. No animals should be allowed inside the airplane, what about allergies, etc

The flight was half empty yet they charged me $50 for a basic carry on! I saw how passengers of different colors were treated differently.

There was a 5 hour delay. Missed connection and now an almost 21 hour lay over!

Three hours on the tarmac with almost zero communication from the cockpit. Not when offered a water in the interim. In my 67 years of flying all over the world the worst experience ever. The plane was half empty, however had to pay for seats to sit next to my girlfriend. Extra to take a carry on. I would never fly Porter again even for free.

Great! Personable crew. I love that they pour complimentary beer and wine.

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

De planning was an absolute mess. We were never told that we weren’t at the gate and that we had to go down unstable stairs and then hop on a bus. People were falling, we couldn’t tell who was in charge. Overall terrible communication that ended up leaving a bad impression at the very end of the experience.

After a 5 hour delay waiting at the gate (3 delays adding up) with no clear reason provided, we finally boarded flew 3/4 of the way to Toronto then were turned back to New York. As we neared New York, the pilot declared that it was his fault, something to do with timing and him not being allowed into the country???? How could the airline let his happen? They had hours to prepare and make sure they had a crew available for the flight! We ended up in Toronto a day late with no sleep.

Long line to check bags. Curbside check-in was closed. Seat back monitor was not working.

Left on time. Arrived on time. That’s all i ask.

AC barely worked on a 50 minute flight. It was very warm the whole flight. Flight was very bumpy and hard landing.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

We had to wait almost an hour for the wheelchair porter to be ready to pick up my mother. And when she arrived in Newark airport the porter was not there and she started walking with her cane and her poor mobility. When the Newark porter found her they didn't want to transfer her bags to the wheelchair for her.

Flight was 3 1/2 hour delayed with no credit or meal vouchers

The plane was so gross and dirty. Literally saw dust layering and flowing out the grey vents. Dust was all over the air vent knobs to the point where I took my sani wipe and cleaned them down so at least it wasn't blowing my my face. Also, I upgraded and paid for Wifi and it's always so spotty. I get we are in the air, but don't charge for it if it's not going to work. I expect so much more from United. They really are giving up.

Too many canceled flights and kept my wife and I separated on alternate flights. We did not fly out of Denver. We paid a lot of money for the seats we wanted and now that money is gone and we did not sit together. That being said, the many agents were very friendly and did everything possible to help us.

It was soooo hot I was sweating even at altitude. I know you want people to sleep, but keeping it that hot is stupid!

Your app is impossible to use. I couldn't load it. Then i couldn't open it. When i finally got both those things done -with much help -then i couldn't open the app to install a credit card. The upshot was 4 flights without access to food or drink. When i first tried to download united app some company called starlier opened instead and i would up signing up for some 49 dollar a month music service which i still have not been able to cancel.

I contacted both carriers months beforehand to change the cabin (booked in April) but to no avail (united asked to contact Swiss since it was their equipment, Swiss told me to reach out to united). So yeah… My seat was pretty worn down, legroom on 27K was more than enough, but still economy seating so, getting to know your neighbours was easy. According to ground staff, the flight was massively overbooked- and this showed. I ordered a gluten free meal beforehand (which was honoured) but for breakfast got a bread roll and croissant 🤷🏼‍♂️ The connection itself is great. Leaving SFO late PM to arrive at ZRH in the afternoon makes it easier to get re adjusted again. However, and since I’ve flown this connection a couple of times in the past, I will rather deal with one carrier only and include a layover on the east coast.

Nothing bad to say about the actual crew or airline. It was nice to have a complimentary FULL can of soda, as well as a snack. Blankets and earbuds were also provided at no cost for this red eye flight. I especially appreciated the free WiFi and movie selection with the Bluetooth option. It helped the flight pass more quickly. No matter who you fly, boarding and disembarking are always SUCH a pain. As I mentioned, this is on the passengers and not the crew!!

You can not pay credit Card for purchase Of food in airplane

Overall good experience. The positive: nice courteous crew. A modern aircraft, with extra space for carry on luggage. The okeish: Unfortunately, no entertainment screens, you have to you use your phone with the United App. The bad: in seat power was not working in our row, even it was promised as an onboard service. We were looking to charge our almost depleted phone batteries during g the flight This no power also happened in the flight to las Vegas. We paid extra to be in seats closer to the entrance. It was not advised that the seats we selected couldn't recline as behind us was was the emergency exit.

Westjet was late and we missed our connecting flight with Cathay. Had to wait 8 hours. Westjet only allows 1 checked in baggage for international flights- it’s always been 2. Canada allows only 1 sandwhich bag size full off small liquids. Everything else will be tossed. Awful trip. Will never fly west jet or go to Toronto to connect flights!

Delayed 3 times in a row for 4 hours total. Incrementally pushing back the flight claiming gate delays but they eventually changed the actual plane, due to technical issues. This strategy to avoid compensation to passengers is unprofessional.

I like the web site, prompt notifications, website checks in process, and airport check in. The flight attendants are attentive and polite. The return flight was 2 hours late and reason vine doesn't sound like an unplanned and unexpected issue (scheduled plane maintenance).

Not only was the flight delayed more than 3 hours but also there was no internet or movies on the flight. It was Flair/Spirit quality of experience at Westjet prices

The flight was delayed repeatedly, on the day of and in the days and weeks beforehand. The staff are alway fantastic.

The big lady was sitting right next to me and the button to recline my seat was blocked by her huge arm. No power outlet for chargers. No inflight Wi-Fi movies

Horrible, flight on the way to Vegas was delayed significantly and then on my way back my second flight was cancelled

Our flight experience was great! Flight staff was funny and offered great service. Made record flying time coming home from Vegas after having to wait for planes on the tarmac because of high winds

Seats can use more cushioning, it felt very hard. The snack option could be better

The plane from Calgary to Comox was incredibly warm, with little to no air flow and when served drinks there was like 2 ice cubes that melted instantly. Everyone was using the plastic menus to fan themselves. Awful

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Almost everything it was a “cool” ambiance but we arrived to Toronto so that it’s ok for me

Front desk attendant wouldn’t check me in even though there was not a single person in line. Made me use the kiosk. Kiosk had an error (of course) no baggage can be checked at this kiosk please see attendant. Then I had to wait in line for the same front desk attendant waiting for 5 people who ended up coming in front of me while I tried to use a broken and useless kiosk. Finally after checked in, wait 30 min to board all the way to zone 6 and they would deny me even after all the zone 1-5 people already went. Just literally making us wait to board so they stand there doing nothing for 5 minutes. Just ridiculous and awful customer service. Fly with literally anyone else

Small plane with no space, old seats, no entertainment, big turbulences

Another 5h flight with Air Canada with no screens and WiFi not working. Not even intranet for inflight movies on personal devices. UNACCEPTABLE

I would prefer if the Exit row seating was treated as priority seating.

I would never fly air Canada again….delay after delay…poor service….

A coffee in the morning before we land would have been very appreciated.

The crew was nice and helpful. Seats were basic. For a 4 hour flight, they didn’t even offer snack. Just paid snack, which is lame.

Check-in was excellent. Flight crew were average, but managed the weather induced stress calmly. We were delayed five hours due to weather, equipment, and staffing shortages.

Everything you need to know for your flight from Las Vegas to Ontario

Information on your arrival and departure airports