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LAS - ONT

Find cheap flights from Las Vegas to Ontario from $38

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Las Vegas to Ontario departing on 5/22. 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
0 bags
Thu 5/23
Thu 5/30

Search hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Las Vegas to Ontario, 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 Las Vegas to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 44,632,927 times on KAYAK, and here is why:

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Cheap flight deals from Las Vegas to Ontario (LAS-ONT)

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 and deals for you by selecting your travel dates.
Choose your dates
2:56 pm - 4:05 pmLAS-ONT
1h 09mnonstop
7:45 pm - 8:51 pmONT-LAS
1h 06mnonstop
$38Frontier
Find Deal
Wed, May 22 - Wed, May 22
2:56 pm - 4:05 pmLAS-ONT
1h 09mnonstop
5:41 pm - 6:52 pmONT-LAS
1h 11mnonstop
$43Frontier
Find Deal
Wed, May 22 - Wed, May 29
2:56 pm - 4:05 pmLAS-ONT
1h 09mnonstop
7:45 pm - 8:51 pmONT-LAS
1h 06mnonstop
$44Frontier
Find Deal
Wed, May 22 - Wed, May 29
11:00 am - 12:06 pmLAS-ONT
1h 06mnonstop
12:34 pm - 1:43 pmONT-LAS
1h 09mnonstop
$46Frontier
Find Deal
Wed, May 8 - Thu, May 9
6:05 am - 7:08 amLAS-ONT
1h 03mnonstop
8:53 pm - 10:03 pmONT-LAS
1h 10mnonstop
$48Frontier
Find Deal
Fri, May 3 - Sun, May 5
8:56 pm - 9:58 pmLAS-ONT
1h 02mnonstop
10:58 pm - 12:12 amONT-LAS
1h 14mnonstop
$49Frontier
Find Deal
Thu, May 2 - Sun, May 5
2:56 pm - 4:05 pmLAS-ONT
1h 09mnonstop
11:04 pm - 12:18 amONT-LAS
1h 14mnonstop
$50Frontier
Find Deal
Wed, May 22 - Fri, May 24
6:20 am - 7:24 amLAS-ONT
1h 04mnonstop
11:04 pm - 12:18 amONT-LAS
1h 14mnonstop
$52Frontier
Find Deal
Thu, May 23 - Fri, May 24
4:35 pm - 9:44 pmLAS-ONT
5h 09m1 stop
7:25 pm - 10:59 pmONT-LAS
3h 34m1 stop
$242American Airlines
Find Deal
Thu, Aug 29 - Sat, Aug 31
4:25 pm - 9:56 pmLAS-ONT
5h 31m1 stop
10:00 am - 3:11 pmONT-LAS
5h 11m1 stop
$312American Airlines
Find Deal
Thu, May 2 - Sun, May 5

Flights from Las Vegas to Ontario - Travel Insights & Trends

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.

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

The average price of all flights from Las Vegas to Ontario clicked on KAYAK for each day over the last 12 months.
When flying from Las Vegas to Ontario, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Las Vegas, you’ll find the best rates on Tuesdays and the most expensive ones on Fridays.

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 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 October, where tickets cost $53 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $91 and $82 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Las Vegas to Ontario, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 22 days before departure.

Which airlines provide the cheapest flights from Las Vegas to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Las Vegas to Ontario found by KAYAK users in the last 72 hours was for $38 on Frontier, followed by American Airlines ($242). One-way flight deals have also been found from as low as $39 on Frontier and from $100 on American Airlines.

Which airlines fly non-stop between Las Vegas and Ontario?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Las Vegas to Ontario.
There are 2 airlines that fly nonstop from Las Vegas to Ontario. They are Frontier and Southwest. The cheapest airline for this route is Frontier, with the best one-way deal found costing $38. On average, the best prices for this route can be found at Frontier.

How many flights are there between Las Vegas and Ontario per day?

Each day, there are between 5 and 11 nonstop flights that take off from Las Vegas and land in Ontario, with an average flight time of 1h 04m. The most common departure time is 10:00 am and most flights take off in the morning. Each week, there are 67 flights. The most frequent day of departure is Wednesday, when 16% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between Las Vegas and Ontario?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 2 cabin class options for the route. These are Business and Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Las Vegas to Ontario take?

Direct flights cover the 197 miles separating Las Vegas to Ontario in about 1h 02m.

What’s the earliest departure time from Las Vegas to Ontario?

Early birds can take the earliest flight from Las Vegas at 6:00 am and will be landing in Ontario at 7:03 am.

What’s the latest departure time from Las Vegas to Ontario?

If you prefer to fly at night, the latest flight from Las Vegas to Ontario jets off at 9:55 pm and lands at 11:00 pm.

Good to know

Low season

January

High season

September

Cheapest flight

$38
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Las Vegas to Ontario

When to book flights from Las Vegas to Ontario

Are your dates flexible? Find out the best times to travel from Las Vegas to Ontario 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 Las Vegas to Ontario

  • Where can passengers sleep at ONT airport?

    The Sheraton Gateway Hotel at Ontario International Airport is the only hotel that is physically located inside the Ontario International Airport. It provides weary passengers with the opportunity to rejuvenate themselves by sleeping, swimming, showering, and working out. Day usage charges are available.

  • Are there any kid-friendly amenities at ONT airport?

    A nursing room, which can be found in Terminal 3 near the Duty-Free shop as well as at Gate B1, offers mothers a quiet place to breastfeed their children in private. Chairs, changing tables, and sinks may be found in each and every nursing room.

  • How can I get to downtown Ontario from ONT airport?

    The trip from Ontario International Airport to Union Station in the heart of downtown Toronto on the Union Pearson Express takes just 25min. It loads at Terminals 1 and 2.

  • How do I get from downtown Las Vegas to Harry Reid International Airport?

    Since downtown Las Vegas is just approximately 20min away by vehicle from the airport, you can simply use a cab or ridesharing service like Uber to get there. There is access to LAS through public transit, which will take around 30min.

  • What is the cheapest flight from Las Vegas to Ontario?

    In the last 3 days, the lowest price for a flight from Las Vegas to Ontario was $39 for a one-way ticket and $38 for a round-trip.

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

    A passport is not required to fly from Las Vegas to Ontario.

  • Which airlines offer Wi-Fi service onboard planes from Las Vegas to Ontario?

    Delta, JetBlue, Alaska Airlines, and American Airlines offer inflight Wi-Fi service on the Las Vegas to Ontario flight route.

  • Which aircraft models fly most regularly from Las Vegas to Ontario?

    The Airbus A320neo is the aircraft model that flies most regularly on the Las Vegas to Ontario flight route.

  • On which days can I fly direct from Las Vegas to Ontario?

    There are nonstop flights from Las Vegas to Ontario on a daily basis.

  • 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 to Ontario from Las Vegas 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 to Ontario with an airline and back to Las Vegas with another airline. Booking your flights between Las Vegas and ONT 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 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 to Ontario from Las Vegas up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from LAS to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $34 or less one-way and $48 or less round-trip.
  • At the Harry Reid International Airport in Las Vegas (LAS), there are specific areas inside as well as outside of the terminals where passengers may take their dogs to discharge themselves. The airport offers post-security covered inside rooms as well as outdoor designated enclosures where travelers may take their animals to relieve themselves. These places are available to travelers who are traveling with pets or service animals. There are three locations within the airport that serve as checkpoints once passengers have cleared security: the A/B/C Gates of Terminal 1, the D Gates of Terminal 1, and the west end of Terminal 3 at Gate E11.
  • Are you intending to be in Ontario for a longer period of time and need to park your vehicle at the Harry Reid International Airport (LAS) while you are away? When it comes to parking over an extended period of time at LAS, you have two options: the covered parking garage or the uncovered parking lot.
  • Do you plan to arrive in Las Vegas ahead of time and are looking for things to keep yourself occupied before your flight departs? Attempt to unwind by visiting one of the lounges, such as the Club LAS. The Centurion Club is also available. These may be found at Terminal 1 on the ground floor and in the main terminal on the higher level, respectively.
  • Services for travelers with limited mobility are available at both Harry Reid International Airport and Ontario International Airport. Before or after your flight, any airport can help you with wheelchair rentals and getting through the terminal. If you want to use these amenities, please notify your airline in advance.
  • When you arrive at the Ontario Airport (ONT), proceed to the auto-rental facility to pick up your rental vehicle. There is no need to take a shuttle to a separate place since the vehicle rental agency is right there in the airport. The automobile rental service is available at any time.
See more tips

Prefer to fly non-stop from Las Vegas to Ontario?

Find which airlines fly direct from Harry Reid Intl to Ontario, which days they fly and book direct flights.

Nonstop departures

Las Vegas Harry Reid Intl to Ontario

Monday

Frontier, Southwest

Frontier, Southwest

Tuesday

Frontier, Southwest

Frontier, Southwest

Wednesday

Frontier, Southwest

Frontier, Southwest

Thursday

Frontier, Southwest

Frontier, Southwest

Friday

Frontier, Southwest

Frontier, Southwest

Saturday

Frontier, Southwest

Frontier, Southwest

Sunday

Frontier, Southwest

Frontier, Southwest

See more direct flights

Nonstop returns

Ontario to Las Vegas Harry Reid Intl

Monday

Frontier, Southwest

Frontier, Southwest

Tuesday

Frontier, Southwest

Frontier, Southwest

Wednesday

Frontier, Southwest

Frontier, Southwest

Thursday

Frontier, Southwest

Frontier, Southwest

Friday

Frontier, Southwest

Frontier, Southwest

Saturday

Frontier, Southwest

Frontier, Southwest

Sunday

Frontier, Southwest

Frontier, Southwest

See more direct flights
See more direct flights

Top 4 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.
8.2
Ravn AlaskaOverall score based on 11 reviews
8.3boarding
7.3comfort
7.7food
8.5crew
7.4entertainment
Airline reviews

Flight was cancelled and couldn’t reschedule. Had to rebook on southwest.

2.0 MediocreAnonymous, Feb 2024RNO - ONT
Read more about Ravn Alaska reviews

Flight was cancelled and couldn’t reschedule. Had to rebook on southwest.

High winds with a lot of turbulence, but expected with winds. Otherwise it was fast and excellent!!

Expect many people do not have masks on or have the nose is hanging ride over the top of them

Pros: "I always love flying Alaska Airlines. Great crew, service, comfortable flights."
Cons: "These flights are always cold. Not sure anything can be done but dress warm if you are flying to outlying areas in Alaska"
Pros: "Crew. Light hearted and didn’t take herself too seriously."
Pros: "Have to fly first class to get a meal. That’s a bit excessive."
Cons: "For a first class seat it didn’t recline very well. Had to mash the hell out of button and force back a bit. Not exactly a first class flight. Entertainment hand held had dead battery. Still not exactly first class."

The only thing that would make the experience better is a little more leg room and the overhead bins are very low. I hit my head when I was settling into the middle seat and was nervous about poking my eye on the corner of a lowered bin when I was deplaning.

It helps manage expectations to know that this is a discount airline. I brought my own snacks so that I wouldn't have to buy something if I got hungry or thirsty for soda during the flight. One of my seat mates was unaware that he would have to pay $4 for a Coke and was a bit upset. He hadn't listened to the flight attendant say "Drinks for purchase?". All of the employees I interacted with were friendly and professional. My one complaint is that the overhead bins are very low when they are open. I was heading for the middle seat and unexpectedly hit the top of my head on the bottom of the open overhead bin. The headrests were also a little uncomfortable. But overall, for the price, it was a decent value, and I would fly Breeze again.

Flight was on time. The crew was efficient and kind.

Did not like the fact that I was charged to take on a bag I usually put in the overhead

My flight was delayed, not by much.?very good communication during fest and waiting to board.

Communication with airline electronically was difficult. No number seemed available to talk to customer service.

What could have been better is if Discover credit card would be able to purchase food

Crew was inconsistent in instructions in advising passengers about seat backs during take off. Perfunctory announcements except from cabin.

The experience with Breeze was really great. The app makes managing flights easy. You can check in on there 24 hours in advance, and your boarding pass is there, too. The flight crew and the staff at both our airports were wonderful. Snacks and drinks were reasonably priced. The seats were very comfortable, they even had adjustable headrests on every seat. The only downside is not having entertainment or Wi-Fi available onboard.

The price is amazing. I was worried about how the flight would be as I never flew then. Seats were very comfortable. We had lots of legroom. The Akron airport was really nice. Overall it didn't have the stress we usually experience with flying. Highly recommend

what I like about Spirit is that the pilot and crew are good communicators. The plane itself - well, its a budget airline and you get what is expected, But I generally just feel safer, somehow, when I know more about what is going on - and Spirit has always done a good job of telling me what is going on: why the delay, why the turbulence, why this and that... and that means a lot to me.

There was a .79 discrepancy between the cost of the flight and what was paid. Spirit didn't let me obtain my boarding pass until the .79 (seventy nine cents) was paid. Contacting their customer service to resolve the issue was a nightmare that involved many wait minutes and two different departments. The price Kayak gave to Affirm, whom I used to pay for the tickets, and the price Spirit charged for the flight were off by the .79. I almost lost the ticket because of the hassle.

They sure know how to make you feel like you're packed into a sardine can. Most uncomfortable seat you imagine.

I flew from Las Vegas to Reno Nevada. Airfare was 60 $ round trip. I needed to bring my skis and boots.that was going to be $111 to bring them. Upon arrival they informed me that anyone who has skis more than 62 inches long is charged an oversize fee of $150 each way. Almost everyone over 5 foot five has skis over 62 inches long. So I paid $60 for the flight and $411 to bring my skis with me! WTF

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

Great value airline. It doesn’t always work out flawlessly but this flight from Vegas to Reno was perfect.

Delayed several times. Flight was to arrive at midnight and it arrive at 3 am. A 3 hour delay is already bad but one that has you arriving in the wee hour is just disruptive and overall unacceptable. The complete lack of restitution is a joke in keeping with Spirit’s reputation of ranking bottom-low in the pecking order.

Flight was canceled and rebooked for the next day. Had to cancel the entire vacation.

Don’t fly with Spirit unless you wanna be treated like trash. Racist employee too

Small water and small chips 10 dollars is insane. Pluse almost 200 for a carry on and luggage also crazy. Otherwise was on time that's good

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

I liked getting off the plane. Everything else was well below standards. Not even offering a bag of peanuts for free for a 4 hours flight is ridiculous.

The whole experience was bad. Didn't know no complimentary drinks or snacks. $4.39 for a soda is ridiculous even a bottle water. A carry on was $74 just crazy. I don't think I will take this airline ever again. Very bad

Delayed...attendants checked every single bag and item for sizes before boarding.

4 hour delay because they used our aircraft to fly a different segment (per the captain)

Due to delay of our first flight, we almost missed the second flight. Workers were more agreeable, and baggage did not seem to be an issue.

I like the easy check-in and boarding process. I love the non stop flight

absolutely horrific. delayed flights, overbooking. over charging. nightmare service beyond words. stay away.

My husband didn't get boarded on this flight. He was asked to pay $50 extra by the Frontier staff to get two boarding passes for check-in at the Las Vegas airport. He refused to pay this extra $50 charge and tried to do check-in online by himself but it seemed to be late with only 7 mins left. It ended up that my daughter and my husband missed the 7-minute time window. They had to take the next non-direct flight which took more than 12 hours from Las Vegas to San Francisco, a very poor experience for them.

Book cheap flights from Las Vegas to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Las Vegas to Ontario found on KAYAK in the last 72 hours.
5/6Mon
nonstopFrontier
1h 05mLAS-ONT
$39
5/6Mon
nonstopFrontier
1h 02mLAS-ONT
$40
5/26Sun
nonstopFrontier
1h 04mLAS-ONT
$48
6/1Sat
1 stopAmerican Airlines
3h 54mLAS-ONT
$100
5/23Thu
1 stopAmerican Airlines
4h 31mLAS-ONT
$101
5/18Sat
2 stopsAlaska Airlines
16h 58mLAS-ONT
$202
6/11Tue
2 stopsAlaska Airlines
16h 58mLAS-ONT
$205
7/24Wed
2 stopsUnited Airlines
16h 45mLAS-ONT
$247
6/22Sat
2 stopsUnited Airlines
16h 27mLAS-ONT
$264
5/20Mon
2 stopsDelta
16h 38mLAS-ONT
$282

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Last minute flights from Las Vegas to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Las Vegas to Ontario that are departing in the next 10 days.
4/24Wed
nonstopFrontier
1h 06mLAS-ONT
4/27Sat
nonstopFrontier
1h 14mONT-LAS
$105
4/28Sun
nonstopFrontier
1h 03mLAS-ONT
4/28Sun
nonstopFrontier
1h 14mONT-LAS
$112
4/26Fri
multi-stopAmerican Airlines
5h 31mLAS-ONT
5/7Tue
multi-stopAmerican Airlines
4h 51mONT-LAS
$331
4/26Fri
multi-stopAmerican Airlines
5h 31mLAS-ONT
4/29Mon
multi-stopAmerican Airlines
5h 26mONT-LAS
$363
4/28Sun
multi-stop
12h 18mLAS-ONT
4/30Tue
multi-stop
6h 46mONT-LAS
$666
4/26Fri
multi-stopUnited Airlines
12h 41mLAS-ONT
4/29Mon
multi-stopUnited Airlines
11h 12mONT-LAS
$686
4/28Sun
multi-stopAlaska Airlines
12h 18mLAS-ONT
5/1Wed
multi-stopAlaska Airlines
10h 05mONT-LAS
$687
4/26Fri
multi-stop
7h 59mLAS-ONT
4/27Sat
multi-stop
6h 06mONT-LAS
$755
4/28Sun
multi-stopAlaska Airlines
13h 25mLAS-ONT
5/1Wed
multi-stopAlaska Airlines
13h 19mONT-LAS
$762
4/26Fri
multi-stopUnited Airlines
15h 54mLAS-ONT
5/7Tue
multi-stopUnited Airlines
18h 52mONT-LAS
$941

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Las Vegas - Ontario Flights

Departure:

Las Vegas (LAS)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Las Vegas

Cabin classes:

$193
$38