£49 Find Cheap Flights from Ontario to Las Vegas – Compare and Save

These are the earliest and latest flight times available from Ontario to Las Vegas:

• Earliest: departs at 05:30 and lands at 06:36
• Latest: departs at 22:47 and lands at 23:53.

The flight takes about 1h 06m.

Only Economy class is available on flights from Ontario to Las Vegas.

A direct flight from Ontario to Las Vegas takes 1h 06m, covering 197 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Return flights from Ontario to Las Vegas range from £72 to £180, with an average of £118 over the past 12 months. Anything below £72 counts as a good deal.

Last-minute fares on this route (booked within 2 weeks of departure) run 35% above the route average of £118. Book 5 weeks before departure for the lowest fares.

On this route, direct flights are cheaper than stopover options on average. Direct fares average £118 return, compared with £189 via a stopover through Salt Lake City (SLC).

Frontier is slightly above the route average for timely arrivals, while Southwest has a lower on-time arrival rate. On-time arrival rates on Ontario to Las Vegas flights are:

• Frontier: 87% on time
• Southwest: 83% on time
• JetBlue: 75% on time

On average, flights on this route are punctual 84% of the time.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £34–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Airbus A320neo family is used most often on this route, operated mainly by Frontier. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

Morning is the busiest departure period on Ontario to Las Vegas flights, with 43% leaving in that window. Afternoon departures account for 29%, Evening flights for 28%, and Night flights for 0%.

JetBlue is the only airline on the Ontario to Las Vegas route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from Ontario to Las Vegas are currently lower than usual. Average one-way flight prices are about £83, which is 5% below the typical average for this route.

Las Vegas Harry Reid Intl Airport (LAS) hosts 5 major car hire companies, with daily rates starting from around £6 for economy cars. Top options include:
• Easirent
• Ace
• Fox
• Dollar
• Thrifty

Flights from Ontario to Las Vegas usually depart from Ontario (ONT) and arrive at Las Vegas Harry Reid Intl (LAS).

Morning flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Ontario to Las Vegas route, 16% of flights were delayed in the past 3 months, with delays averaging 1 hour 27 minutes.

One-stop flights from Ontario to Las Vegas most commonly connect through:

• San Francisco (SFO) – 60% of one-stop connections
• Denver Intl (DEN) – 20% of one-stop connections
• Salt Lake City (SLC) – 20% of one-stop connections

San Francisco (SFO) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 35% on the Ontario to Las Vegas route. Tuesday is the cheapest departure day at £89 return on average, while Friday is the most expensive at £137, a difference of £48. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

2 airlines operate flights between Ontario and Las Vegas. The airlines offering direct flights on this route include:

• Southwest
• Frontier

Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time of 4h 20m, compared to 4h 31m via San Francisco (SFO) and 6h 33m via Denver Intl (DEN).

Some of the most popular sights in Las Vegas are Fremont Street Experience, Casino at Main Street Station, and Luxor Hotel & Casino. These are among the most viewed places in Las Vegas on KAYAK.

Among airlines operating Ontario to Las Vegas flights:

• Frontier: offers free seat selection
• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Frontier: a cabin bag and a checked bag in Economy class
• Southwest: a cabin bag in Economy class class
• JetBlue: a cabin bag in Economy class class

Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.