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Uncover the best deals on Ontario to Las Vegas flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest ONT - LAS Flights
Useful information for finding best airline tickets from Ontario International to McCarran International on your next trip.
Cheapest Round Trip Flight
$155
United Airlines
• 1 stop
• 7h 7m
Aug 15 – Aug 16
The cheapest round trip flight from Ontario to Las Vegas (ONT-LAS-ONT) is currently $155
Cheapest Direct Flight
$113
Southwest Airlines
• nonstop
• 1h 45m
Aug 15
The cheapest nonstop flight from Ontario to Las Vegas (ONT-LAS) is currently $113
Fastest Flight
1h 45m
The fastest nonstop flight from Ontario to Las Vegas (ONT-LAS) takes 1h 45m
Top Airlines Flying from Ontario to Las Vegas
Latest Flight Deals from Ontario (ONT) to Las Vegas (LAS)
Compare and book low fare round-trip air tickets from Ontario to Las Vegas. Ideal for travelers with confirmed return itineraries.
Aug 15 - Aug 16, Economy
Ontario → Las Vegas
7h 7m
1:18 PM - 8:51 PM • 1 stop
Ontario → Las Vegas
5h 22m
6:05 PM - 10:59 PM • 1 stop
United Airlines
Aug 15 - Aug 16, Economy
Ontario → Las Vegas
10h 15m
2:50 PM - 9:05 PM • 1 stop
Ontario → Las Vegas
1h 58m
8:12 AM - 9:30 AM • nonstop
Southwest Airlines
Aug 15 - Aug 16, Economy
Ontario → Las Vegas
1h 55m
5:20 AM - 6:35 AM • nonstop
Ontario → Las Vegas
7h 2m
7:00 AM - 11:22 AM • 1 stop
Southwest Airlines
Aug 15 - Aug 16, Economy
Ontario → Las Vegas
1h 50m
11:47 AM - 12:57 PM • nonstop
Ontario → Las Vegas
1h 49m
2:45 PM - 3:54 PM • nonstop
Frontier Airlines
Aug 15 - Aug 16, Economy
Ontario → Las Vegas
8h 48m
6:15 AM - 11:43 AM • 1 stop
Ontario → Las Vegas
2h
7:40 PM - 9:00 PM • nonstop
American Airlines
Flying to Las Vegas soon? We've surfaced some of the most affordable last-minute flights from Ontario to Las Vegas, ideal for urgent plans or spontaneous trips.
Jul 16 - Jul 18, Economy
Ontario → Las Vegas
25h 48m
6:43 PM - 10:31 AM • 2 stops
Ontario → Las Vegas
35h 46m
5:52 PM - 3:38 PM • 1 stop
Alaska Airlines
Jul 16 - Jul 18, Economy
Ontario → Las Vegas
17h 33m
7:00 AM - 5:53 PM • 2 stops
Ontario → Las Vegas
15h 36m
6:02 AM - 3:38 PM • 2 stops
Alaska Airlines
Jul 16 - Jul 18, Economy
Ontario → Las Vegas
22h 34m
7:00 AM - 8:54 PM • 2 stops
Ontario → Las Vegas
15h 36m
6:02 AM - 3:38 PM • 2 stops
Alaska Airlines
Jul 16 - Jul 18, Economy
Ontario → Las Vegas
20h 1m
10:54 AM - 10:55 PM • 2 stops
Ontario → Las Vegas
15h 36m
6:02 AM - 3:38 PM • 2 stops
Alaska Airlines
Jul 16 - Jul 18, Economy
Ontario → Las Vegas
20h 48m
10:54 AM - 11:42 PM • 2 stops
Ontario → Las Vegas
15h 36m
6:02 AM - 3:38 PM • 2 stops
Alaska Airlines
Looking for the fastest way to Las Vegas? These direct flight options from ONT to LAS offer both convenience and value—no layovers, just straight to your destination.
Aug 15 - Aug 16, Economy
Ontario → Las Vegas
1h 45m
2:55 PM - 4:00 PM • nonstop
Ontario → Las Vegas
1h 50m
8:20 AM - 9:30 AM • nonstop
Southwest Airlines
Aug 15 - Aug 16, Economy
Ontario → Las Vegas
1h 59m
8:15 AM - 9:34 AM • nonstop
Ontario → Las Vegas
1h 58m
8:12 AM - 9:30 AM • nonstop
United Airlines
Aug 15 - Aug 16, Economy
Ontario → Las Vegas
1h 50m
11:47 AM - 12:57 PM • nonstop
Ontario → Las Vegas
1h 49m
2:45 PM - 3:54 PM • nonstop
Frontier Airlines
Aug 15 - Aug 16, Economy
Ontario → Las Vegas
1h 58m
3:45 PM - 5:03 PM • nonstop
Ontario → Las Vegas
2h
7:40 PM - 9:00 PM • nonstop
American Airlines
Aug 15 - Aug 16, Economy
Ontario → Las Vegas
1h 45m
- • nonstop
Ontario → Las Vegas
1h 50m
- • nonstop
Southwest Airlines
FAQs on Ontario to Las Vegas Flights
What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to LAS?
The most popular airline flying from Ontario to Las Vegas are
Can I fly from ONT to LAS non-stop?
Yes, you can fly ONT to LAS non-stop on
Which airlines fly nonstop between Ontario and Las Vegas?
The non-stop flights between Ontario and Las Vegas are .
What’s the earliest departure time from ONT to LAS Airport?
The earliest flight leaves ONT at 5:20 am and lands in LAS - McCarran International
What are the airports in Las Vegas?
LAS
Can I make changes to my Ontario to Las Vegas flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ONT to LAS?
Read the fare rules of the Ontario to Las Vegas air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Ontario and Las Vegas?
operate flights between Ontario and Las Vegas
How long does a flight from Ontario to Las Vegas take?
It takes approximately 1 hour to fly non-stop from ONT to LAS, which is 196.8 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to Las Vegas (LAS) ?
In the past couple of days, the cheapest tickets to LAS from ONT were found on WN : USD 207
Do I need a passport to fly between ONT and LAS?
No
What’s the latest departure time from ONT to LAS ?
The last flight leaves ONT at 3:3500 pm
Ontario (ONT) to Las Vegas (LAS): Airport Information
| Origin Airport | Ontario International , Ontario, US |
| Destination Airport | McCarran International , Las Vegas, US |
| Distance | 197 miles |
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