S$187 Cheap Flights from Ontario to Las Vegas

View S$187 flight on Tue, 26 Aug, 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 S$187 for one-way flights and S$373 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 26 Aug - Wed, 27 Aug
ONT
Ontario
LAS
Las Vegas
S$373 Return, found 1 day ago
S$373
Return
found 1 day ago
Select American Airlines flight, departing Tue, 26 Aug from Ontario to Las Vegas, returning Wed, 27 Aug, priced at S$373 found 1 day ago
Delta
Tue, 26 Aug - Wed, 27 Aug
ONT
Ontario
LAS
Las Vegas
S$421 Return, found 1 day ago
S$421
Return
found 1 day ago
Select Delta flight, departing Tue, 26 Aug from Ontario to Las Vegas, returning Wed, 27 Aug, priced at S$421 found 1 day ago
United
Tue, 26 Aug - Wed, 27 Aug
ONT
Ontario
LAS
Las Vegas
S$440 Return, found 1 day ago
S$440
Return
found 1 day ago
Select United flight, departing Tue, 26 Aug from Ontario to Las Vegas, returning Wed, 27 Aug, priced at S$440 found 1 day ago
Delta
Tue, 26 Aug - Wed, 27 Aug
ONT
Ontario
LAS
Las Vegas
S$466 Return, found 1 day ago
S$466
Return
found 1 day ago
Select Delta flight, departing Tue, 26 Aug from Ontario to Las Vegas, returning Wed, 27 Aug, priced at S$466 found 1 day ago
Delta
Tue, 26 Aug - Wed, 27 Aug
ONT
Ontario
LAS
Las Vegas
S$479 Return, found 1 day ago
S$479
Return
found 1 day ago
Select Delta flight, departing Tue, 26 Aug from Ontario to Las Vegas, returning Wed, 27 Aug, priced at S$479 found 1 day ago
Delta
Tue, 26 Aug - Wed, 27 Aug
ONT
Ontario
LAS
Las Vegas
S$492 Return, found 1 day ago
S$492
Return
found 1 day ago
Select Delta flight, departing Tue, 26 Aug from Ontario to Las Vegas, returning Wed, 27 Aug, priced at S$492 found 1 day ago
American Airlines
Tue, 26 Aug - Wed, 27 Aug
ONT
Ontario
LAS
Las Vegas
S$497 Return, found 1 day ago
S$497
Return
found 1 day ago
Select American Airlines flight, departing Tue, 26 Aug from Ontario to Las Vegas, returning Wed, 27 Aug, priced at S$497 found 1 day ago
American Airlines
Tue, 26 Aug - Wed, 27 Aug
ONT
Ontario
LAS
Las Vegas
S$502 Return, found 1 day ago
S$502
Return
found 1 day ago
Select American Airlines flight, departing Tue, 26 Aug from Ontario to Las Vegas, returning Wed, 27 Aug, priced at S$502 found 1 day ago
United
Tue, 26 Aug - Wed, 27 Aug
ONT
Ontario
LAS
Las Vegas
S$505 Return, found 1 day ago
S$505
Return
found 1 day ago
Select United flight, departing Tue, 26 Aug from Ontario to Las Vegas, returning Wed, 27 Aug, priced at S$505 found 1 day ago
American Airlines
Sat, 12 Jul - Mon, 14 Jul
ONT
Ontario
LAS
Las Vegas
S$506 Return, found 9 hours ago
S$506
Return
found 9 hours ago
Select American Airlines flight, departing Sat, 12 Jul from Ontario to Las Vegas, returning Mon, 14 Jul, priced at S$506 found 9 hours ago

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

August is typically the cheapest month to fly

From S$61 - S$137 per traveller.

Graph displaying average flight prices per month

Ontario to Las Vegas route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Harry Reid Intl.
Return price
S$373
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 American Airlines, United, 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$187 and roundtrip prices from S$373*.
 

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$373. 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

Ontario Airports

Los Angeles

John Wayne to Las Vegas
S$119.00

Orange County

John Wayne to Las Vegas
S$124.40

Burbank

Hollywood Burbank to Las Vegas
S$318.30

Long Beach

John Wayne to Las Vegas
S$544.30
*Available to Expedia members.