€131 Cheap Flights Ontario to Las Vegas (ONT-LAS)

View €131 flight on Sun, 19 Oct 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Harry Reid Intl. Airport (LAS)

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Cheap flights from Ontario to Las Vegas (ONT-LAS)

Prices were available within the past 7 days and start at €131 for one-way flights and €359 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 2 Oct - Fri, 10 Oct
ONT
Ontario
LAS
Las Vegas
€359 Return, found 4 days ago
€359
Return
found 4 days ago
Select American Airlines flight, departing Thu, 2 Oct from Ontario to Las Vegas, returning Fri, 10 Oct, priced at €359 found 4 days ago
American Airlines
Thu, 2 Oct - Fri, 10 Oct
ONT
Ontario
LAS
Las Vegas
€361 Return, found 4 days ago
€361
Return
found 4 days ago
Select American Airlines flight, departing Thu, 2 Oct from Ontario to Las Vegas, returning Fri, 10 Oct, priced at €361 found 4 days ago
American Airlines
Thu, 2 Oct - Fri, 10 Oct
ONT
Ontario
LAS
Las Vegas
€397 Return, found 4 days ago
€397
Return
found 4 days ago
Select American Airlines flight, departing Thu, 2 Oct from Ontario to Las Vegas, returning Fri, 10 Oct, priced at €397 found 4 days ago
American Airlines
Fri, 26 Sept - Sun, 28 Sept
ONT
Ontario
LAS
Las Vegas
€436 Return, found 5 days ago
€436
Return
found 5 days ago
Select American Airlines flight, departing Fri, 26 Sept from Ontario to Las Vegas, returning Sun, 28 Sept, priced at €436 found 5 days ago
American Airlines
Thu, 2 Oct - Fri, 10 Oct
ONT
Ontario
LAS
Las Vegas
€446 Return, found 4 days ago
€446
Return
found 4 days ago
Select American Airlines flight, departing Thu, 2 Oct from Ontario to Las Vegas, returning Fri, 10 Oct, priced at €446 found 4 days ago
United
Fri, 26 Sept - Thu, 2 Oct
ONT
Ontario
LAS
Las Vegas
€451 Return, found 4 days ago
€451
Return
found 4 days ago
Select United flight, departing Fri, 26 Sept from Ontario to Las Vegas, returning Thu, 2 Oct, priced at €451 found 4 days ago
United
Fri, 26 Sept - Thu, 2 Oct
ONT
Ontario
LAS
Las Vegas
€462 Return, found 4 days ago
€462
Return
found 4 days ago
Select United flight, departing Fri, 26 Sept from Ontario to Las Vegas, returning Thu, 2 Oct, priced at €462 found 4 days ago
United
Thu, 2 Oct - Fri, 10 Oct
ONT
Ontario
LAS
Las Vegas
€467 Return, found 4 days ago
€467
Return
found 4 days ago
Select United flight, departing Thu, 2 Oct from Ontario to Las Vegas, returning Fri, 10 Oct, priced at €467 found 4 days ago
American Airlines
Thu, 2 Oct - Fri, 10 Oct
ONT
Ontario
LAS
Las Vegas
€480 Return, found 4 days ago
€480
Return
found 4 days ago
Select American Airlines flight, departing Thu, 2 Oct from Ontario to Las Vegas, returning Fri, 10 Oct, priced at €480 found 4 days ago
United
Thu, 2 Oct - Fri, 10 Oct
ONT
Ontario
LAS
Las Vegas
€484 Return, found 4 days ago
€484
Return
found 4 days ago
Select United flight, departing Thu, 2 Oct from Ontario to Las Vegas, returning Fri, 10 Oct, priced at €484 found 4 days ago

Find the cheapest month to fly from Ontario (ONT) to Las Vegas (LAS)

October is typically the cheapest month to fly

From €41 - €75 per traveller.
Ontario to Las Vegas route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Harry Reid Intl.
Return price
€358
Distance
314 km
Average flight time
1 hour 6 mins

Perfect flights from Ontario to Las Vegas

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Ontario to Las Vegas. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Los Angeles - Ontario Intl. to Harry Reid Intl. ticket options cater to your travel preferences, with incredible one-way fares from €131 and roundtrip prices from €359. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Harry Reid Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Las Vegas.

Frequently asked questions

How much is a flight from Ontario Airport to LAS?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight between Ontario Airport and LAS was €359. Cheap fares don't stick around for long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Ontario Airport to Harry Reid Airport (formerly McCarran Airport)?
This can vary between air carriers, as each has its own set of terms and conditions. Head to the Customer Service Portal, where there are easy-to-follow instructions on how to cancel online.
How do I find cheap flights from ONT to Harry Reid Airport (formerly McCarran Airport) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Ontario Airport to LAS flights, you'll see a "no change fees" filter for you to select.
How far is the flight from ONT to LAS?
It's just 320 kilometres between Ontario and Las Vegas. It's quite possible that you'll spend more time travelling to and from the airport than you will actually flying!
Which airlines fly direct from Los Angeles - Ontario Intl. Airport (ONT) to Harry Reid Airport (formerly McCarran Airport)?
Southwest Airlines (WN) is one of the preferred choices for travellers jetting between Ontario Airport and LAS. Take your pick of the 143 flights it operates on this route each month. Frontier Airlines (F9) is also worth considering. It offers 56 flights every month. Between these two airlines, you'll be able to find a great deal from Ontario to Las Vegas.
Are Los Angeles - Ontario Intl. Airport (ONT) to Harry Reid Airport (formerly McCarran Airport) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from ONT to Harry Reid Airport (formerly McCarran Airport) at the last minute could be your ticket to a great deal. However, it could end up costing you a whole lot more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to a year in advance. If your preferred carrier hasn't released tickets yet, check back frequently as deals are updated on Expedia all the time.

Explore a world of travel with Expedia

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