Lowest Prices
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
$353
Southwest Airlines
• 1 stop
• 5h 45m
Jan 15 – Jan 17
The cheapest round trip flight from Ontario to Las Vegas (ONT-LAS-ONT) is currently $353
Cheapest Direct Flight
$184
Southwest Airlines
• nonstop
• 1h 45m
Nov 01
The cheapest nonstop flight from Ontario to Las Vegas (ONT-LAS) is currently $184
Fastest Flight
1h 42m
The fastest nonstop flight from Ontario to Las Vegas (ONT-LAS) takes 1h 42m
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.
Jan 15 - Jan 17, Economy
Ontario → Las Vegas
5h 45m
7:00 AM - 10:45 AM • 1 stop
Ontario → Las Vegas
5h 35m
8:30 AM - 12:05 PM • 1 stop
Southwest Airlines
Jan 15 - Jan 17, Economy
Ontario → Las Vegas
5h 35m
6:45 AM - 10:20 AM • 1 stop
Ontario → Las Vegas
6h 45m
9:20 AM - 1:25 PM • 1 stop
Southwest Airlines
Jan 15 - Jan 17, Economy
Ontario → Las Vegas
1h 45m
8:30 PM - 9:35 PM • nonstop
Ontario → Las Vegas
5h 25m
6:00 AM - 9:25 AM • 1 stop
Southwest Airlines
Jan 15 - Jan 17, Economy
Ontario → Las Vegas
1h 45m
5:30 AM - 6:35 AM • nonstop
Ontario → Las Vegas
1h 40m
5:30 PM - 6:30 PM • nonstop
Southwest Airlines
Jan 15 - Jan 17, Economy
Ontario → Las Vegas
1h 45m
8:05 AM - 9:10 AM • nonstop
Ontario → Las Vegas
1h 50m
10:10 AM - 11:20 AM • nonstop
Southwest 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.
Sep 19 - Sep 27, Economy
Ontario → Las Vegas
34h 3m
11:45 AM - 8:28 AM • 1 stop
Ontario → Las Vegas
1h 54m
3:45 PM - 4:59 PM • nonstop
Frontier Airlines
Sep 19 - Sep 27, Economy
Ontario → Las Vegas
19h 19m
11:45 AM - 11:44 PM • 1 stop
Ontario → Las Vegas
13h 57m
3:10 PM - 11:47 PM • 1 stop
Frontier Airlines
Sep 18 - Sep 21, Economy
Ontario → Las Vegas
6h 51m
12:07 PM - 4:18 PM • 1 stop
Ontario → Las Vegas
6h 59m
3:17 PM - 7:36 PM • 1 stop
Frontier Airlines
Sep 18 - Sep 21, Economy
Ontario → Las Vegas
1h 50m
2:30 PM - 3:40 PM • nonstop
Ontario → Las Vegas
2h 4m
5:20 PM - 6:44 PM • nonstop
Frontier Airlines
Sep 18 - Sep 21, Economy
Ontario → Las Vegas
1h 51m
8:24 PM - 9:35 PM • nonstop
Ontario → Las Vegas
1h 57m
6:30 AM - 7:47 AM • nonstop
Frontier 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.
Nov 01 - Nov 04, Economy
Ontario → Las Vegas
1h 45m
5:35 AM - 6:40 AM • nonstop
Ontario → Las Vegas
1h 40m
6:45 AM - 7:45 AM • nonstop
Southwest Airlines
Jan 15 - Jan 17, Economy
Ontario → Las Vegas
1h 45m
5:30 AM - 6:35 AM • nonstop
Ontario → Las Vegas
1h 40m
5:30 PM - 6:30 PM • nonstop
Southwest Airlines
Jan 15 - Jan 17, Economy
Ontario → Las Vegas
1h 45m
8:05 AM - 9:10 AM • nonstop
Ontario → Las Vegas
1h 50m
10:10 AM - 11:20 AM • nonstop
Southwest Airlines
Jan 15 - Jan 17, Economy
Ontario → Las Vegas
1h 45m
8:30 PM - 9:35 PM • nonstop
Ontario → Las Vegas
1h 40m
5:30 PM - 6:30 PM • nonstop
Southwest Airlines
Jan 15 - Jan 17, Economy
Ontario → Las Vegas
1h 50m
12:45 PM - 1:55 PM • nonstop
Ontario → Las Vegas
1h 40m
8:25 AM - 9:25 AM • 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 5:30 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 354
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 8:30 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 |
More Flight Options for Ontario (ONT) and Las Vegas (LAS)
Flights from Ontario (ONT)
to Las Vegas (LAS)
Flights from Ontario (ONT)
to Las Vegas (LAS)
Flights from Ontario (ONT)
to Charlotte (CLT)
Flights from Ontario (ONT)
to Charlotte (CLT)
Flights from Ontario (ONT)
to Tucson (TUS)
Flights from Ontario (ONT)
to New York (JFK)
Flights from Ontario (ONT)
to Dallas (DFW)
Flights from Ontario (ONT)
to Dallas (DFW)
Flights from Ontario (ONT)
to Miami (MIA)
Flights from Ontario (ONT)
to Miami (MIA)
Flights from Ontario (ONT)
to San Antonio (SAT)
Flights from Ontario (ONT)
to San Antonio (SAT)
Flights from Ontario (ONT)
to San Diego (SAN)
Flights from Ontario (ONT)
to San Diego (SAN)
Flights from Ontario (ONT)
to Manila (MNL)
Flights from Ontario (ONT)
to Manila (MNL)
Flights from Ontario (ONT)
to Phoenix (PHX)
Flights from Ontario (ONT)
to Phoenix (PHX)
Flights from Ontario (ONT)
to Salt Lake City (SLC)
Flights from Ontario (ONT)
to Salt Lake City (SLC)
Flights from Houston (IAH)
to Las Vegas (LAS)
Flights from Salt Lake City (SLC)
to Las Vegas (LAS)
Flights from Dallas (DFW)
to Las Vegas (LAS)
Flights from Dallas (DFW)
to Las Vegas (LAS)
Flights from Houston (HOU)
to Las Vegas (LAS)
Flights from Atlanta (ATL)
to Las Vegas (LAS)
Flights from Atlanta (ATL)
to Las Vegas (LAS)
Flights from Jacksonville (JAX)
to Las Vegas (LAS)
Flights from Seattle (SEA)
to Las Vegas (LAS)
Flights from Charlotte (CLT)
to Las Vegas (LAS)
Flights from Portland (PDX)
to Las Vegas (LAS)
Flights from Orlando (MCO)
to Las Vegas (LAS)
Flights from Dallas (DAL)
to Las Vegas (LAS)
Flights from Sacramento (SMF)
to Las Vegas (LAS)
Flights from Phoenix (PHX)
to Las Vegas (LAS)
Flights from Chicago (ORD)
to Las Vegas (LAS)
Flights from Pittsburgh (PIT)
to Las Vegas (LAS)
Flights from Philadelphia (PHL)
to Las Vegas (LAS)
Flights from Oklahoma City (OKC)
to Las Vegas (LAS)
Flights from Minneapolis (MSP)
to Las Vegas (LAS)
Cheap flights to North America (NA)
Cheap flights to United States (US)
Cheap flights to Nevada (US-NV)
Cheap flights to California (US-CA)
Cheap flights from North America (NA)
Cheap flights from United States (US)
Cheap flights from Nevada (US-NV)
Cheap flights from California (US-CA)
Flights to Las Vegas (LAS)
Flights to Ontario (ONT)
Flights to Ontario (ONT)
Flights from Las Vegas (LAS)
Flights from Las Vegas (LAS)
to Ontario (ONT)
Flights from Las Vegas (LAS)
to Ontario (ONT)
Flights from Ontario (ONT)
Why Fareleaders for ONT to LAS Plane Tickets
New Deals Everyday
Get the best prices on ONT to LAS flights—we update our fares daily so you never miss a saving.
No Service Fees
Compare hundreds of Ontario to Las Vegas flights and secure the best deals—we never add any service fees.