S$203 Cheap Flights from Ontario to Las Vegas

View S$203 flight on Sun, 21 Dec, 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$203 for one-way flights and S$370 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, 5 Jan - Thu, 8 Jan
ONT
Ontario
LAS
Las Vegas
S$370 Return, found 4 days ago
S$370
Return
found 4 days ago
Select American Airlines flight, departing Mon, 5 Jan from Ontario to Las Vegas, returning Thu, 8 Jan, priced at S$370 found 4 days ago
American Airlines
Mon, 5 Jan - Thu, 8 Jan
ONT
Ontario
LAS
Las Vegas
S$455 Return, found 4 days ago
S$455
Return
found 4 days ago
Select American Airlines flight, departing Mon, 5 Jan from Ontario to Las Vegas, returning Thu, 8 Jan, priced at S$455 found 4 days ago
American Airlines
Mon, 5 Jan - Thu, 8 Jan
ONT
Ontario
LAS
Las Vegas
S$500 Return, found 4 days ago
S$500
Return
found 4 days ago
Select American Airlines flight, departing Mon, 5 Jan from Ontario to Las Vegas, returning Thu, 8 Jan, priced at S$500 found 4 days ago
American Airlines
Mon, 5 Jan - Thu, 8 Jan
ONT
Ontario
LAS
Las Vegas
S$524 Return, found 4 days ago
S$524
Return
found 4 days ago
Select American Airlines flight, departing Mon, 5 Jan from Ontario to Las Vegas, returning Thu, 8 Jan, priced at S$524 found 4 days ago
American Airlines
Mon, 5 Jan - Thu, 8 Jan
ONT
Ontario
LAS
Las Vegas
S$585 Return, found 4 days ago
S$585
Return
found 4 days ago
Select American Airlines flight, departing Mon, 5 Jan from Ontario to Las Vegas, returning Thu, 8 Jan, priced at S$585 found 4 days ago
American Airlines
Mon, 5 Jan - Thu, 8 Jan
ONT
Ontario
LAS
Las Vegas
S$590 Return, found 4 days ago
S$590
Return
found 4 days ago
Select American Airlines flight, departing Mon, 5 Jan from Ontario to Las Vegas, returning Thu, 8 Jan, priced at S$590 found 4 days ago
American Airlines
Mon, 5 Jan - Thu, 8 Jan
ONT
Ontario
LAS
Las Vegas
S$654 Return, found 4 days ago
S$654
Return
found 4 days ago
Select American Airlines flight, departing Mon, 5 Jan from Ontario to Las Vegas, returning Thu, 8 Jan, priced at S$654 found 4 days ago
American Airlines
Mon, 5 Jan - Thu, 8 Jan
ONT
Ontario
LAS
Las Vegas
S$675 Return, found 4 days ago
S$675
Return
found 4 days ago
Select American Airlines flight, departing Mon, 5 Jan from Ontario to Las Vegas, returning Thu, 8 Jan, priced at S$675 found 4 days ago
American Airlines
Mon, 5 Jan - Thu, 8 Jan
ONT
Ontario
LAS
Las Vegas
S$721 Return, found 4 days ago
S$721
Return
found 4 days ago
Select American Airlines flight, departing Mon, 5 Jan from Ontario to Las Vegas, returning Thu, 8 Jan, priced at S$721 found 4 days ago
American Airlines
Mon, 5 Jan - Thu, 8 Jan
ONT
Ontario
LAS
Las Vegas
S$744 Return, found 4 days ago
S$744
Return
found 4 days ago
Select American Airlines flight, departing Mon, 5 Jan from Ontario to Las Vegas, returning Thu, 8 Jan, priced at S$744 found 4 days ago

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

October is typically the cheapest month to fly

From S$63 - S$112 per traveller.
Ontario to Las Vegas route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Harry Reid Intl.
Return price
S$370
Distance
314 km
Average flight time
1 hour 3 mins

Perfect flights from Ontario to Las Vegas

Your Journey from Ontario to Las Vegas

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Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including American Airlines, United. 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$203 and roundtrip prices from S$370*.
 

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

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*Note: Prices may vary based on availability and are subject to change.

Explore a world of travel with Expedia

Ontario Airports

Los Angeles

Los Angeles Intl. to Las Vegas
S$111.00

Orange County

John Wayne to Las Vegas
S$140.00

Burbank

Hollywood Burbank to Las Vegas
S$401.90
*Available to Expedia members.