Cheap flight from Ontario to Las Vegas from $28
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Flights from Ontario to Las Vegas
Cheap flight deals from Ontario to Las Vegas
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Round-trip
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One way
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Cheapest nonstop
ONT 10:17 PM1h 10mNonstopLAS 11:27 PMOntario - Las Vegas | Sat, May 10 | Frontier Airlines
LAS 8:49 AM1h 5mNonstopSIN 9:54 AMLas Vegas - Ontario | Wed, May 14 | Frontier Airlines$28 $10473% OFF73% OFF$104 $28 -
ONT 10:15 PM1h 10mNonstopLAS 11:25 PMOntario - Las Vegas | Sun, May 18 | Frontier Airlines
LAS 6:20 AM1h 3mNonstopSIN 7:23 AMLas Vegas - Ontario | Fri, May 23 | Frontier Airlines$28 $10473% OFF73% OFF$104 $28
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ONT 10:44 AM1h 12mNonstopLAS 11:56 AMOntario - Las Vegas | Wed, May 14 | Frontier Airlines
LAS 6:20 AM1h 3mNonstopSIN 7:23 AMLas Vegas - Ontario | Thu, May 22 | Frontier Airlines$28 $10473% OFF73% OFF$104 $28
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ONT 2:42 PM1h 11mNonstopLAS 3:53 PMOntario - Las Vegas | Mon, May 5 | Frontier Airlines
LAS 2:29 PM1h 10mNonstopSIN 3:39 PMLas Vegas - Ontario | Thu, May 8 | Frontier Airlines$3666% OFF$104 $36
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ONT 6:30 AM1h 10mNonstopLAS 7:40 AMOntario - Las Vegas | Tue, Jun 3 | Frontier Airlines
LAS 10:35 AM1h 9mNonstopSIN 11:44 AMLas Vegas - Ontario | Wed, Jun 4 | Frontier Airlines$3864% OFF$104 $38
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ONT 7:00 AM1h 9mNonstopLAS 8:09 AMOntario - Las Vegas | Tue, Jun 10 | Frontier Airlines
LAS 6:31 PM1h 22mNonstopSIN 7:53 PMLas Vegas - Ontario | Tue, Jun 10 | Frontier Airlines$3864% OFF$104 $38
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ONT 5:15 PM1h 13mNonstopLAS 6:28 PMOntario - Las Vegas | Sat, May 31 | Frontier Airlines
LAS 6:31 PM1h 22mNonstopSIN 7:53 PMLas Vegas - Ontario | Sat, Jun 7 | Frontier Airlines$7330% OFF$104 $73
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ONT 10:44 AM1h 12mNonstopLAS 11:56 AMOntario - Las Vegas | Wed, May 7 | Frontier Airlines
LAS 6:29 PM1h 21mNonstopSIN 7:50 PMLas Vegas - Ontario | Wed, May 14 | Frontier Airlines$8221% OFF$104 $82
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ONT 10:44 AM1h 12mNonstopLAS 11:56 AMOntario - Las Vegas | Tue, May 6 | Frontier Airlines
LAS 6:29 PM1h 21mNonstopSIN 7:50 PMLas Vegas - Ontario | Wed, May 7 | Frontier Airlines$8221% OFF$104 $82
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ONT 10:15 PM1h 10mNonstopLAS 11:25 PMOntario - Las Vegas | Sun, May 4 | Frontier Airlines
LAS 6:29 PM1h 21mNonstopSIN 7:50 PMLas Vegas - Ontario | Wed, May 7 | Frontier Airlines$986% OFF$104 $98
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ONT 1:00 PM17h 25m1 stopsLAS Invalid DateOntario - Las Vegas | Tue, May 6 | Normal Airline
LAS 3:00 PM6hNonstopONT 4:00 PMLas Vegas - Ontario | Thu, May 8 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
ONT 5:13 PM1h 13mNonstopLAS 6:26 PMOntario - Las Vegas | Sat, Jun 14 | Frontier Airlines$38 $6743% OFF43% OFF$67 $38
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ONT 6:25 AM1h 16mNonstopLAS 7:41 AMOntario - Las Vegas | Tue, May 27 | Frontier Airlines$39 $6742% OFF42% OFF$67 $39
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ONT 10:44 AM1h 12mNonstopLAS 11:56 AMOntario - Las Vegas | Wed, May 14 | Frontier Airlines$39 $6742% OFF42% OFF$67 $39
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ONT 7:00 AM1h 9mNonstopLAS 8:09 AMOntario - Las Vegas | Wed, Jun 11 | Frontier Airlines$4041% OFF$67 $40
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ONT 10:52 AM1h 12mNonstopLAS 12:04 PMOntario - Las Vegas | Mon, May 12 | Frontier Airlines$4139% OFF$67 $41
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ONT 10:15 PM1h 10mNonstopLAS 11:25 PMOntario - Las Vegas | Thu, May 8 | Frontier Airlines$4730% OFF$67 $47
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ONT 10:44 AM1h 12mNonstopLAS 11:56 AMOntario - Las Vegas | Wed, May 7 | Frontier Airlines$4730% OFF$67 $47
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ONT 10:44 AM1h 12mNonstopLAS 11:56 AMOntario - Las Vegas | Tue, May 6 | Frontier Airlines$4828% OFF$67 $48
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ONT 10:52 AM1h 12mNonstopLAS 12:04 PMOntario - Las Vegas | Sun, May 4 | Frontier Airlines$636% OFF$67 $63
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ONT 10:52 AM1h 12mNonstopLAS 12:04 PMOntario - Las Vegas | Mon, May 5 | Frontier Airlines$636% OFF$67 $63
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ONT 1:00 PM17h 25m1 stopsLAS Invalid DateOntario - Las Vegas | Tue, May 6 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Flight Info | Ontario to Las Vegas
| Cheapest one-way flight price | $32 |
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| Cheapest round-trip ticket price | $28 |
| Off-season for travel | February |
| Peak season for travel | February |
| Flight distance | 12,242.65 km |
| Popular airline | Frontier Airlines |
When is the cheapest time to fly from Ontario to Las Vegas?
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Frequently Asked Questions
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When are flight tickets from Ontario (ONT) to Las Vegas (LAS) the cheapest?
Airlines adjust prices for flights from Ontario to Las Vegas based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much do flights from Ontario (ONT) to Las Vegas (LAS) cost?
According to Trip.com's data, the lowest price is around $115.
How to find a cheap flight from Ontario to Las Vegas
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Ontario to Las Vegas. Book your flights at the right time and save more.
Book Early
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Compare Flight Prices
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Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
Try Different Dates
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