$29 Cheap Frontier Airlines flights Ontario (ONT) to Las Vegas (LAS)

Landing cheap one-way Frontier Airlines flights from ONT to LAS from $29 on Expedia is a cinch — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly return fares from $53 for your next exciting getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Browse for round-trip or one-way flights to Las Vegas in January or June. You could find an affordable fare with Frontier Airlines during these off-peak times.

Begin your search one to three months before your departure to get cheaper fares on Frontier Airlines flights from Los Angeles - Ontario Intl. Airport (ONT) to Harry Reid Intl. Airport (LAS). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Yes, you can travel from Los Angeles - Ontario Intl. Airport (ONT) to Harry Reid Intl. Airport (LAS) on one of Frontier Airlines’s 16 direct weekly flights. Use our “Nonstop” and “Airline” filters to find the Frontier Airlines flight that’ll get you to LAS at your preferred time.

Take off from Los Angeles - Ontario Intl. Airport (ONT) for Harry Reid Intl. Airport (LAS) on a nonstop Frontier Airlines flight, and you’ll be in the skies for approximately 1h 12m.

Friday has the most Frontier Airlines flights from Los Angeles - Ontario Intl. Airport (ONT) to Harry Reid Intl. Airport (LAS). With 3 daily departures, this is a great day to find something that will work for your schedule.

The earliest flight from ONT to LAS with Frontier Airlines leaves at 7:56AM UTC-8. You’ll touch down at 9:07AM UTC-8. The last Frontier Airlines flight of the day takes off at 9:36PM UTC-8 and arrives at 10:49PM UTC-8. With 20% fewer cancellations for morning and mid-morning flights, jetting out early is often the best option.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Harry Reid Intl. Airport (LAS) is the primary Las Vegas gateway for Frontier Airlines flights from Los Angeles - Ontario Intl. Airport (ONT).

Travel from ONT to LAS with Frontier Airlines and you can look forward to a host of benefits including a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you could also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Frontier Airlines typically uses Airbus A320neo planes for flights from Los Angeles - Ontario Intl. Airport (ONT) to Harry Reid Intl. Airport (LAS). This carrier also operates the Airbus A321neo on this route. Keep in mind that aircraft type can vary due to operational requirements, so the plane you catch could be different when you travel.

Depending on the ticket type you purchased, a fee typically applies if you cancel or change your flight more than 24 hours after confirmation. To find plane tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when you search for flights. For additional information on modifying or canceling your reservation, go to “Trips,” select your flight and tick “Manage Booking.”