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ONT - LAS

Find cheap flights from Ontario to Las Vegas from $24

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 Las Vegas departing on 4/20. 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
0 bags
Thu 4/18
Thu 4/25

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Las Vegas.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Las Vegas.
In the last 7 days travelers have searched 47,600,107 times on KAYAK, and here is why:

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Cheap flight deals from Ontario to Las Vegas

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Las Vegas 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.
10:49 pm - 12:03 amONT-LAS
1h 14mnonstop
6:05 am - 7:08 amLAS-ONT
1h 03mnonstop
$48Frontier
Find Deal
Tue, Apr 16 - Thu, Apr 18
10:56 pm - 12:10 amONT-LAS
1h 14mnonstop
6:00 am - 7:03 amLAS-ONT
1h 03mnonstop
$49Frontier
Find Deal
Sat, Apr 13 - Tue, Apr 23
9:37 pm - 10:49 pmONT-LAS
1h 12mnonstop
8:13 pm - 9:18 pmLAS-ONT
1h 05mnonstop
$50Frontier
Find Deal
Sat, Mar 30 - Tue, Apr 2
6:55 pm - 8:01 pmONT-LAS
1h 06mnonstop
10:15 am - 11:20 amLAS-ONT
1h 05mnonstop
$52Frontier
Find Deal
Tue, Apr 16 - Tue, Apr 23
7:41 pm - 8:46 pmONT-LAS
1h 05mnonstop
8:55 pm - 9:57 pmLAS-ONT
1h 02mnonstop
$53Frontier
Find Deal
Wed, Apr 10 - Wed, Apr 17
12:30 pm - 1:43 pmONT-LAS
1h 13mnonstop
5:00 pm - 6:09 pmLAS-ONT
1h 09mnonstop
$54Frontier
Find Deal
Wed, May 29 - Wed, May 29
9:00 am - 10:08 amONT-LAS
1h 08mnonstop
10:56 am - 12:05 pmLAS-ONT
1h 09mnonstop
$56Frontier
Find Deal
Wed, Apr 3 - Sat, Apr 6
5:26 pm - 6:35 pmONT-LAS
1h 09mnonstop
11:20 am - 12:26 pmLAS-ONT
1h 06mnonstop
$57Frontier
Find Deal
Tue, Apr 2 - Sat, May 4
6:55 pm - 8:01 pmONT-LAS
1h 06mnonstop
9:22 am - 2:46 pmLAS-ONT
5h 24m1 stop
Tue, Apr 16 - Wed, Apr 17
10:59 pm - 12:13 amONT-LAS
1h 14mnonstop
11:00 am - 6:11 pmLAS-ONT
7h 11m1 stop
Fri, Apr 12 - Sat, Apr 13

Flights from Ontario to Las Vegas - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to Las Vegas 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 Las Vegas?

The average price of all flights from Ontario to Las Vegas clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Las Vegas on a Tuesday and more expensive on a Friday. On your return trip to Ontario, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Las Vegas, 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 Las Vegas is January, where tickets cost $91 on average. On the other hand, the most expensive months are December and May, where the average cost of tickets is $122 and $117 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Las Vegas, 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 Ontario to Las Vegas, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 71 days before departure.

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

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Ontario to Las Vegas.
There are 2 airlines that fly nonstop from Ontario to Las Vegas. They are Frontier and Southwest. The cheapest airline for this route is Frontier, with the best one-way deal found costing $39. On average, the best prices for this route can be found at Frontier.

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

Each day, there are between 11 and 18 nonstop flights that take off from Ontario and land in Las Vegas, with an average flight time of 1h 06m. The most common departure time is 5:00 pm and most flights take off in the morning. Each week, there are 106 flights. The most frequent day of departure is Friday, when 17% of all weekly flights depart. The fewest flights depart on a Saturday.

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

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 Ontario to Las Vegas take?

Nonstop flights from Ontario generally make it to Las Vegas in 1h 05m. The flying distance between the two cities is 197 miles.

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

Early birds can take the earliest flight from Ontario at 5:35 am and will be landing in Las Vegas at 6:40 am.

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

If you prefer to fly at night, the latest flight from Ontario to Las Vegas jets off at 10:59 pm and lands at 12:13 am.

Good to know

Low season

January

High season

September

Cheapest flight

$24
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Ontario to Las Vegas

When to book flights from Ontario to Las Vegas

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

  • Is it possible to book direct flights from Ontario to Las Vegas?

    There are many direct flights between Ontario and Las Vegas that are offered each day and these are typically operated by Frontier Airlines. Quite a few flights require passengers to have a layover as well, and you will find that these are usually serviced by Alaska Airlines or American Airlines.

  • How can I travel from downtown Ontario to Ontario International Airport?

    An easy way to get to Ontario International Airport from the city center is by driving or taking a taxi, which will generally take around 10 to 15min depending on what traffic is like at the time. You can also take public transportation, such as bus line 61, which will take you between 15 and 20min on average.

  • What transportation options are there for going from Harry Reid International Airport to downtown Las Vegas?

    To head to downtown Las Vegas once you have landed at Harry Reid International Airport, you can always drive or take a taxi, which will normally take you 20 to 25min. Public transportation is also an option, and bus line CX will bring you to the city center in approximately 45 to 50min.

  • What services are available for passengers with reduced mobility?

    There are employees at Ontario International Airport that are ready to help passengers with limited mobility through security, to their gate, and while boarding the plane. Free wheelchairs are also available for anyone in need. At both Ontario International Airport and Harry Reid International Airport, there are also elevators and ramps, as well as public restrooms that are accessible for individuals with reduced mobility.

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

    In the last 3 days, the lowest price for a flight from Ontario to Las Vegas was $24 for a one-way ticket and $48 for a round-trip.

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

    No

  • Which airports will I be using when flying from Ontario to Las Vegas?

    When flying out of Ontario you will be using Ontario. You will be landing at Las Vegas, also known as Las Vegas Harry Reid Intl.

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

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

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

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

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

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

  • Which is the best airline for flights from Ontario to Las Vegas, Alaska Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Las Vegas are Alaska Airlines and United Airlines. With an average price for the route of $65 and an overall rating of 8.1, Alaska Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $128 and an overall rating of 7.4.

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

    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 Las Vegas.

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

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

    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 Las Vegas with an airline and back to Ontario with another airline. Booking your flights between Ontario and LAS 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 Las Vegas?

    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 Las Vegas from Ontario 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 ONT to Las Vegas

  • Looking for a cheap flight? 25% of our users found flights on this route for $58 or less one-way and $96 or less round-trip.
  • Those that will be traveling with small children will want to keep in mind that Ontario International Airport (ONT) has two baby care rooms that can be found in terminals 2 and 4. These rooms are equipped with changing tables, outlets, comfortable seating, trash cans, running water, and doors that lock.
  • If you’re flying with a dog, you most likely will want to give them the opportunity to stretch their legs after your flight has landed at Harry Reid International Airport (LAS). Head to one of the designated outdoor pet relief areas that are located just outside terminals 1 and 3.
  • Travelers that have some time to kill before their flight departs from Ontario International Airport can always relax in the Escape Lounge. This lounge has multiple locations, found in terminals 2 and 4, and passengers of all airlines can purchase entry tickets.
  • To rent a car once you have landed at Harry Reid International Airport, head to the McCarran Rent-A-Car Center, which you can go to from the airport by taking one of the free blue and white shuttle buses. At this center, you will find offices for several companies, including Alamo, Budget, and Hertz.
  • While there are no hotels directly at Ontario International Airport, there are a few nearby lodging options if you happen to have a flight that departs early in the morning. For example, the Candlewood Suites Ontario Convention Center is around a 5min drive away and has a free airport shuttle for guests.
See more tips

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

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

Nonstop departures

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

Nonstop returns

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
See more direct flights

Top 5 airlines serving from Ontario to Las Vegas

Need help choosing which airline to fly with from Ontario to Las Vegas? 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 KAYAK reviews.
8.2
Ravn AlaskaOverall score based on 11 reviews
74entertainment
77food
85overall
73comfort
83boarding
85crew
Airline reviews

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

Read more about Ravn Alaska

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."

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

Flight delayed and moved to another gate. Got a text message updating the gate as final boarding finished. Missed flight, fighting for my refund

Prior to boarding we were told the flight was still on time up until about 20 minutes after the scheduled departure time. Details on the new departure time and gate were not provided to us in a timely fashion and we were lead to board a flight to Pittsburgh only to realized upon scanning my boarding pass that it was the wrong flight when signage at the gate said Providence. However, once on board the plane was comfortable and staff courteous and nice.

Perfect. Even got a screwdriver in Pitt to fix my sons luggage. Awesome airline.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

Apart from the delay due to unforeseen circumstances. The leg from sjc to dfw was fine. It was the leg from dfw to orf that we encountered issues mainly due to the flight attendant crew not being friendly. We had two small children and we needed some assistance to warm up milk so the baby would sleep. The crew just didn’t get it and made things very difficult. One made a remark that the baby’s dirty diaper smell was a “gift” to the plane in a rude way. Normally I’d brush that off as a funny comment if the rest of the trip the attendants were helpful or understanding of the difficulty we faced. But that wasn’t the case. We were met with rudeness on the second leg. Whereas on the first leg the crew were so nice and helpful.

Flight From PHX to CVG was on time, very professional staff

The flight was 6 hr late and then they blamed it on the weather. All of the other planes were coming and going fine.

Well, flight times cause some wait, but there were not times available and we understood. I didn't check any luggage, because it has become too expensive. I was able to add any extra items to my co-travellers check bags. [Luckily, this trip wasn't international.] Last, I hadn't flown AA domestically for a while, but partners and coworkers had warned me in advance that not all planes have monitors at every seat. Luckily, I was mostly prepared to use the in-flight entertainment and happy I was. The great: AA staff is always kind and comfort is way better than the budget airlines that I sometimes have to fly. I know my points and vouchers all expired over the last couple of years, but I still enjoy AA when I do fly with them. I also appreciate all of the locations we can go directly from pur home airport. Since we are traveling more now, I hope to take advantage.

Flight was delayed and missed connecting flight. Did not give warning about delay until we showed up at the airport. Not good.

The usual wait at Columbus once you land to get to an open gate (20 minutes) and then the usual 30 minutes for your luggage to appear.

Nothing, flight was supposed to leave at 758 am. My flight didn’t leave until 430 pm. Spent the whole day at the airport.

The flight attended didn't ask one everyone in our party if they wanted a drink or snack. The one attended appeared to hate her job which is the one that attended to us.

Everything was very good EXCEPT the food, on a five and a half hour trip. They only gave to us was snacks in first class. They didn't give us pillows or blankets.

Awful experience. Both flights were delayed several times with weather but also crew members being the official cause. The vouchers are unusable and insufficient ($50 voucher to fly the same crappy airline is a joke for putting me on a red-eye that landed at 3:00 am). The aircrafts were old and uncomfortable (have a real pocket on the seat, for crying out loud!).

The staff at the counter were very rude and unprofessional

Lower price not worth it. Delayed missed connection. Would have taken 24 hours to get to Atlanta. No takes your vouchers making them useless. Never again.

Horrible. Delay after delay. People yelling and making obseen gestures!

Overall good for being my first time flying with spirit

A solid 5 stars. Could it have been better? Not for that price!! The crew was well humored and kind. The process was easy and efficient. I’d do it again in a heartbeat.

Flight was delayed 2+ hours missed a concert because of it…

Lack of accessable charging stations, very uncomfortable seats the savings are not worth it when nickled and dimed for amenities that are standard on other airlines

Overall good service and good flight. Flights were quick and early.

The worst customer service that I have ever experienced. They upcharge you for bags and the gate agent shoved my phone in my face. We contacted Spirit customer service and they did not help us. I will never fly spirit again

They changed my flight and did not want to accommodate me or try to help me in any way. They do not care about their customers.

The flight was delayed and I had to cancel because I would have missed my connection and there were no other flights for the next two days. They also lost my bag!!

My first time to fly Frontier and loved it! Boarding was super easy as we only had personal items. Crew was helpful and funny and the plane was clean. Pilot was also great at landing the plane smoothly.

Poor communication. Plane was available, but crew to fly. It was not so flight was delayed. Our flight was overbooked, so carry-on. Baggage was denied without proper notification before hand. Cost of bags to be checked is outrageous.

Horrible flight, rude crew, someone had so mu h perfume on breathing was difficult.

late late late late no accountability no refund no adjustment no reasonable solution

This isna terribly run airlines. If you're one minute late, they will deny your ticket. Don't waste your time or money

Flight was delayed for more than 3 hours, crew at ONT airport was rude, and when we got to DFW the airplane had an issue landing, we had to be taxied to the terminal, and the luggage was hold until the next day.

Several delays in a row totaling two hours with no information announcements and no explanations given. Rude and unapologetic onboard flight attendant addressing those of us in overpriced emergency exits as if we were idiots. It had been a while since I felt treated like cattle. I will do my best to avoid Frontier as much as possible in the future.

The service was amazing. Frontier should allow passengers who pay for check-in bags one carry-on bag at no additional cost.

Book cheap flights from Ontario to Las Vegas

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Las Vegas found on KAYAK in the last 72 hours.
4/20Sat
nonstopFrontier
1h 14mONT-LAS
$24
4/21Sun
nonstopFrontier
1h 09mONT-LAS
$25
5/1Wed
1 stop
12h 41mONT-LAS
$51
4/13Sat
1 stop
13h 51mONT-LAS
$52
4/9Tue
2 stopsAmerican Airlines
24h 53mONT-LAS
$143
3/30Sat
1 stopAmerican Airlines
5h 22mONT-LAS
$156
4/30Tue
2 stopsAlaska Airlines
10h 05mONT-LAS
$186
4/10Wed
2 stopsAlaska Airlines
13h 50mONT-LAS
$192
4/13Sat
1 stopUnited Airlines
13h 45mONT-LAS
$199
7/20Sat
1 stopUnited Airlines
18h 32mONT-LAS
$228

Search by stops

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Last minute flights from Ontario to Las Vegas

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 Ontario to Las Vegas that are departing in the next 10 days.
3/24Sun
nonstopFrontier
1h 09mONT-LAS
3/28Thu
nonstopFrontier
1h 05mLAS-ONT
$58
3/23Sat
nonstopFrontier
1h 12mONT-LAS
3/30Sat
nonstopFrontier
1h 05mLAS-ONT
$71
3/23Sat
nonstopFrontier
1h 09mONT-LAS
3/26Tue
nonstopFrontier
1h 05mLAS-ONT
$73
3/23Sat
nonstopFrontier
1h 12mONT-LAS
3/31Sun
nonstopFrontier
1h 05mLAS-ONT
$81
3/24Sun
nonstopFrontier
1h 10mONT-LAS
3/26Tue
nonstopFrontier
1h 05mLAS-ONT
$82
3/24Sun
multi-stop
6h 42mONT-LAS
3/27Wed
multi-stop
18h 17mLAS-ONT
$222
3/20Wed
nonstop
1h 08mONT-LAS
3/23Sat
multi-stop
25h 24mLAS-ONT
$227
3/24Sun
multi-stopAmerican Airlines
2h 59mONT-LAS
3/26Tue
multi-stopAmerican Airlines
5h 19mLAS-ONT
$361
3/23Sat
multi-stopAmerican Airlines
5h 22mONT-LAS
3/25Mon
multi-stopAmerican Airlines
5h 16mLAS-ONT
$363
3/24Sun
multi-stopSouthwest
4h 20mONT-LAS
3/26Tue
multi-stopSouthwest
3h 35mLAS-ONT
$387

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Ontario - Las Vegas Flights

Departure:

Ontario (ONT)United States

Destination:

Las Vegas (LAS)United States

Return flight deals:

Las Vegas - Ontario

Cabin classes:

$398
$296
$50