S$155 Cheap Flights from Ontario to Las Vegas

View S$155 flight on Mon, 2 Mar, 2026Opens 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 S$155 for one-way flights and S$342 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, 2 Mar - Thu, 5 Mar
ONT
Ontario
LAS
Las Vegas
S$342 Return, found 20 hours ago
S$342
Return
found 20 hours ago
Select United flight, departing Mon, 2 Mar from Ontario to Las Vegas, returning Thu, 5 Mar, priced at S$342 found 20 hours ago
United
Sun, 22 Feb - Wed, 25 Feb
ONT
Ontario
LAS
Las Vegas
S$344 Return, found 20 hours ago
S$344
Return
found 20 hours ago
Select United flight, departing Sun, 22 Feb from Ontario to Las Vegas, returning Wed, 25 Feb, priced at S$344 found 20 hours ago
United
Sun, 22 Feb - Wed, 25 Feb
ONT
Ontario
LAS
Las Vegas
S$351 Return, found 20 hours ago
S$351
Return
found 20 hours ago
Select United flight, departing Sun, 22 Feb from Ontario to Las Vegas, returning Wed, 25 Feb, priced at S$351 found 20 hours ago
United
Sun, 22 Feb - Wed, 25 Feb
ONT
Ontario
LAS
Las Vegas
S$354 Return, found 20 hours ago
S$354
Return
found 20 hours ago
Select United flight, departing Sun, 22 Feb from Ontario to Las Vegas, returning Wed, 25 Feb, priced at S$354 found 20 hours ago
American Airlines
Sun, 22 Feb - Wed, 25 Feb
ONT
Ontario
LAS
Las Vegas
S$368 Return, found 20 hours ago
S$368
Return
found 20 hours ago
Select American Airlines flight, departing Sun, 22 Feb from Ontario to Las Vegas, returning Wed, 25 Feb, priced at S$368 found 20 hours ago
United
Mon, 23 Feb - Thu, 26 Feb
ONT
Ontario
LAS
Las Vegas
S$374 Return, found 20 hours ago
S$374
Return
found 20 hours ago
Select United flight, departing Mon, 23 Feb from Ontario to Las Vegas, returning Thu, 26 Feb, priced at S$374 found 20 hours ago
American Airlines
Sun, 22 Feb - Wed, 25 Feb
ONT
Ontario
LAS
Las Vegas
S$376 Return, found 20 hours ago
S$376
Return
found 20 hours ago
Select American Airlines flight, departing Sun, 22 Feb from Ontario to Las Vegas, returning Wed, 25 Feb, priced at S$376 found 20 hours ago
American Airlines
Sun, 22 Feb - Wed, 25 Feb
ONT
Ontario
LAS
Las Vegas
S$378 Return, found 20 hours ago
S$378
Return
found 20 hours ago
Select American Airlines flight, departing Sun, 22 Feb from Ontario to Las Vegas, returning Wed, 25 Feb, priced at S$378 found 20 hours ago
United
Mon, 2 Mar - Thu, 5 Mar
ONT
Ontario
LAS
Las Vegas
S$379 Return, found 20 hours ago
S$379
Return
found 20 hours ago
Select United flight, departing Mon, 2 Mar from Ontario to Las Vegas, returning Thu, 5 Mar, priced at S$379 found 20 hours ago
Delta
Sun, 22 Feb - Wed, 25 Feb
ONT
Ontario
LAS
Las Vegas
S$518 Return, found 20 hours ago
S$518
Return
found 20 hours ago
Select Delta flight, departing Sun, 22 Feb from Ontario to Las Vegas, returning Wed, 25 Feb, priced at S$518 found 20 hours ago

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

October is typically the cheapest month to fly

From S$62 - S$114 per traveller.
Ontario to Las Vegas route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Harry Reid Intl.
Airlines serving
American Airlines, Delta, United
Return price
S$341
Distance
314 km
Average flight time
1 hour 5 mins

Perfect flights from Ontario to Las Vegas

Your Journey from Ontario to Las Vegas

Start your unforgettable journey with Expedia. Our broad selection of flights from Ontario to Las Vegas caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including United, American Airlines, Delta. Our selection of flights from Los Angeles - Ontario Intl. to Harry Reid Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Ontario to Las Vegas Flights

Experience the joy of finding cheap flights from Los Angeles - Ontario Intl. to Harry Reid Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$155 and roundtrip prices from S$342*.
 

Pre-Flight Essentials

Ensure a smooth journey from Ontario to Las Vegas with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Las Vegas

Picture yourself stepping off the plane in Las Vegas and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Ontario to Las Vegas Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Ontario to Las Vegas.
 

Beyond the Flight – Exploring Las Vegas

With Expedia, your adventure extends beyond the flight. Explore Las Vegas at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Ontario to Las Vegas with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Ontario to Las Vegas with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

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 S$342. 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

*Available to Expedia members.