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ONT - LAS

Find cheap flights from Ontario to Las Vegas

1 adult
0 bags

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, 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 Las Vegas, as well as popular online travel agencies
In the last 7 days, travellers have searched 45,017,868 times on KAYAK, and here's why:

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

 
These are the cheapest deals for flights from Ontario to Las Vegas currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from Ontario to Las Vegas

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Ontario to Las Vegas.

Recent one-way flight deals from Ontario to Las Vegas

Only flying one-way? Below are some of the best one-way flight deals from Ontario to Las Vegas found on KAYAK recently.

Recent last-minute flight deals from Ontario to Las Vegas

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Ontario to Las Vegas.

Recent direct flight deals from Ontario to Las Vegas

The latest deals for direct flights from Ontario to Las Vegas so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Ontario to Las Vegas

Find recent round-trip train or bus tickets from Ontario to Las Vegas.

All round-trip flight deals to Las Vegas

The cheapest plane tickets to Las Vegas found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
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ONT-LAS
1h 08mdirect
LAS-ONT
1h 08mdirect
Frontier
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ONT-LAS
1h 00mdirect
LAS-ONT
1h 00mdirect
Southwest
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ONT-LAS
1h 08mdirect
Frontier
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ONT-LAS
1h 00mdirect
Southwest
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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 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 £66 on average. On the other hand, the most expensive months are March and December, where the average cost of tickets is £92 and £85 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 170 days before departure.

Good to know - Cheap tickets from Ontario to Las Vegas

Low season

February

High season

October
Best time to beat the crowds but there is an average 38% increase in price.
Most popular time to fly and prices are also 15% lower on average.

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 return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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.

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

    American Airlines, Delta, Alaska Airlines, and JetBlue 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 direct flights from Ontario to Las Vegas on a daily basis.

  • 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 return ticket. You could then fly to Las Vegas with an airline and back to Ontario with another airline.

  • 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

KAYAK’s top tips for finding a cheap flight from Ontario to Las Vegas

  • 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 direct from Ontario to Las Vegas?

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

Direct 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

Direct 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 airline flying from Ontario to Las Vegas

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Las Vegas. 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 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 verified KAYAK customer reviews.
6.1
FrontierOverall score based on 3568 reviews
6.4Boarding
5.7Comfort
6.9Crew
4.7Entertainment
4.9Food
Airline reviews

Stop changing gates at sfo. When you are elderly going back for it’s not fun.

6.0 GoodAnonymous, Oct 2024SFO - SNA
Read more Frontier reviews

Stop changing gates at sfo. When you are elderly going back for it’s not fun.

We understand and comply with Frontier’s bag sizes. We’ve had some problems in past while having to await other passengers who do not understand the baggage restrictions or have not prepaid and that is usually our biggest concern (others delaying us) with flying Frontier. Flying OUT of ONT, however, has always been a great experience. I’ve also noted even on delayed Frontier flights very knowledgeable pilots who manage expectations well.

There was no easy way to check in. I don't want to install an app to checkin. I will use alaska from now on because they have a web check in method that is easy.

Horrible! The short distance flight ended up taking 5 hrs! There was a 3 hr delay for the flight to take off and there was a 70 min wait on the tarmac for some bogus reason that the pilot said the gate he was supposed to board was taken up. After a 30 min wait he said the plane that was supposed to push out of the gate called a medical emergency and 40 min later he ended up boarding another gate. For the initial 3 hr delay there was no information/alert about the gate or delay in the app or the boards up until the boarding time and even beyond! Had to walk all the way to the end of the terminal to find the frontier staff to ask what was going on. Avoid this airline at all costs! If you have carryon bags or checked bags , their prices come equivalent to the prices of more reliable airlines. They are the worst in timeliness at 60% (reported as delayed) this year (check the data) by a high margin even compared to the second worst airline. If you are ok with having a miserable flight experience with the odds close to flip of a coin, feel free to try them. If you value your time , money and flying experience, stay away.

Allowed me to chose my seat without extra charge (I purchased full-price ticket) and boarding was in group1. Didn't even serve water.

I went to the Frontier counter in San Jose at 1030am or so on Sunday 10/13/24 to see if I could get an earlier flight to San Diego in lieu of my reserved 630pm flight. One thing led to another, and I was able to obtain an open seat for about $ 56. on the earlier flight. Fine. Then the agent asked if I "was checking a bag". Not knowing that carry-ons cost extra per Frontier policy, I thought that she meant a regular checked bag. Therefore, I said no. Once I got to the gate, the same gate agent who sold me a ticket told me that I had to pay $99 for a carry-on, and that all bags were extra on Frontier. Having never flown on Frontier, I was not aware of this. Part of the issue was that she was not a native English speaker, so there was a miscommunication as to what "bag" meant. I would have preferred for her to have clearly let me know at the front counter that any bag including a carry-on cost $99. It would have had the same outcome, as I had to take my carry-on. But it got hectic at the last minute at the gate itself. The baggage policy should have mentioned "including carry-ons" when we first spoke.

Most horrible airlines. Please avoid it. It's ok to spend $50 extra for delta, united or Alaska

Every day about it was very different all the boarding pass where all wrong l miss flight no refund all crazy

Staff members pretty horrible when boarding. No care for customers

The trip was good but the last minute changes I didn’t like because I had already talked to the attendee and they didn’t help me with my ticket I was having trouble checking in and when the time was up they help me but charge me for that and last minute luggage it was a small bag. After I was in the airplane I realized you were charging because the flight was almost empty and you have to get the money some how. Thanks for everything.

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1h 08mONT-LAS
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1h 00mONT-LAS

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

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