Cheap flights from Las Vegas to Ontario from $141

The month of January is, on average, the cheapest month to fly to Region of Ontario from Las Vegas, with most prices found around $284. If you aren’t able to travel during the month of January, then book flights to Region of Ontario from Las Vegas during April instead. Flights to Region of Ontario in April, while not as cheap as those in January, still average around $291.

According to our data, Thursday is the cheapest day to fly to Region of Ontario from Las Vegas. The lowest ticket price found for a Thursday departure recently was $408. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Las Vegas to Region of Ontario on a Sunday will generally be more expensive and average around $681. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

According to our data, the cheapest time of day to fly to Region of Ontario is at noon. momondo users have found flights departing from Las Vegas to Region of Ontario at noon for as low as $360. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $524.

Fly from Las Vegas Harry Reid Intl to Toronto Pearson Intl for the best Las Vegas Harry Reid Intl - Ontario flight prices

You are more likely to see cheaper flights to Region of Ontario from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $375 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Las Vegas for as low as $242 on momondo.

There are 4 cabin classes available to choose from on Las Vegas to Region of Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

WestJet, United Airlines, and Air Canada are the most popular carriers operating from Las Vegas Harry Reid Intl to Ontario

Porter Airlines, WestJet and Air Canada are the top three most popular airlines that fly to Region of Ontario from Las Vegas according to our data. Porter Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 7 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

8 flights are operational daily from Las Vegas to Region of Ontario as of August 2026. The most popular departure time for this route is 11:00PM, with 48% of flights per day taking off in the evening.

As of August 2026, there are 61 flights per week flying from Las Vegas to Region of Ontario. The most common day of the week flights depart is Tue, with 15% of flights taking off on this day.