Cheap flights from Las Vegas to Ontario from $28
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Las Vegas to Ontario departing on 5/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Las Vegas to Los Angeles
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Frontier flights from Las Vegas to Ontario
Our best Frontier deals on Las Vegas to Ontario flight tickets
Alaska Airlines flights from Las Vegas to Ontario
Our best Alaska Airlines deals on Las Vegas to Ontario flight tickets
See travel insights to Los Angeles from
How to get the cheapest flight ticket from Las Vegas to Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Ontario?
In general, September is the cheapest month to fly from Las Vegas to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $56. If you aren’t able to travel during the month of September, then book flights to Ontario from Las Vegas during August instead. Flights to Ontario in August, while not as cheap as those in September, still average around $58.
What is the cheapest day to depart on your flight to Ontario?
The cheapest day to depart on your flight to Ontario is on a Tuesday when prices can be found for as low as $58. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Las Vegas to Ontario for around $96.
What is the cheapest time of day to depart on your flight to Ontario?
At noon is the cheapest time of day to fly from Las Vegas to Ontario when you can find flight prices for as low as $66. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $84 on average. Flights to Ontario from Las Vegas in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Las Vegas Harry Reid Intl to Ontario flight route?
Fly from Las Vegas Harry Reid Intl to Ontario for the best Las Vegas Harry Reid Intl - Ontario flight prices
How far in advance should I book a flight to Ontario?
You are more likely to see cheaper flights to Ontario from Las Vegas when booking 17 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $72 when searching 17 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Las Vegas for as low as $35 on momondo.
What cabin class options are available on Las Vegas Harry Reid Intl to Ontario flights?
There are 1 cabin classes available to choose from on Las Vegas Harry Reid Intl to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Las Vegas Harry Reid Intl to Ontario?
Frontier, Southwest, and Alaska Airlines are the most popular carriers operating from Las Vegas Harry Reid Intl to Ontario
What airlines fly to Ontario?
Spirit Airlines, Frontier and Southwest are the top three most popular airlines that fly to Ontario from Las Vegas according to our data. Spirit Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 10 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.
How many flights depart from Las Vegas to Ontario on average per day?
As of April 2025, 5 flights take off from Las Vegas and land in Ontario each day. The most common flight departure time for this route is 1:00PM, with 36% of daily flights taking off in the afternoon.
How many flights depart from Las Vegas to Ontario on average per week?
41 flights are operational weekly from Las Vegas to Ontario as of April 2025. The most popular departure day for this route is Mon, with 22% of flights per week taking off on this day.
When to book flights from Las Vegas to Ontario
Cheap Las Vegas to Ontario (LAS to ONT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Las Vegas to Ontario
How far is Las Vegas Harry Reid Intl to Ontario by plane?
There are 203.5 mi between Las Vegas Harry Reid Intl and Ontario. 1h 02m is a normal flight duration for this route.
When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Ontario Airport?
Prices for flights from Las Vegas Harry Reid Intl Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Las Vegas Harry Reid Intl Airport to Ontario Airport?
The number of operators available for flights from Las Vegas Harry Reid Intl Airport to Ontario Airport is 3 as of April 2025.
How old do you have to be to fly from Las Vegas Harry Reid Intl Airport to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Las Vegas Harry Reid Intl Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Las Vegas to Ontario?
Based on momondo bookings for flights between Las Vegas and Ontario, the leading plane model is Airbus A320neo, making up 38.19% of the total bookings. Other popular models include Airbus A320 (sharklets) with 11.85%, Boeing 737-700 Passenger/BBJ1 (winglets) with 10.94%, and Boeing 737-800 Passenger/BBJ2 (winglets) with 10.64%.
What is the most popular airline from Las Vegas to Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Las Vegas to Ontario is Frontier (95% of total bookings). The next most popular airlines are Southwest (3%) and Spirit Airlines (2%).
Best airlines flying from Las Vegas to Ontario
Compare and see reviews for airlines that fly from Las Vegas to Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $23 | Free Cancellation | Rating 6.3 7,921 reviews | |||
| PriceFrom $38 | Free Cancellation | Rating 6.0 3,281 reviews | |||
| PriceFrom $97 | Free Cancellation | Rating 8.0 4,279 reviews |
Southwest Flights From Las Vegas to Ontario
Across 27 Southwest flights from Las Vegas to Ontario this week, the average price was $230, with the best Southwest deals starting from $97 round-trip. 4,278 users have rated Southwest on momondo, with an average score of 8.0/10.
Frontier Flights From Las Vegas to Ontario
Frontier (6.0/10 from 3,281 reviews) operates around 14 flights from Las Vegas to Ontario in any given week. The average Frontier airfare for this route is around $70, with deals from around $38 rare but found on momondo. Referenced prices are for round-trip Las Vegas to Ontario flight searches in the last 72 hours.
Why use momondo?
Why should I use momondo to find a flight deal from Las Vegas to Ontario?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Las Vegas to Ontario. momondo saves you time and could save you money on your trip.
Can I find flights from Las Vegas to Ontario with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Las Vegas to Ontario flights to just show those with flexible booking policies.
How can momondo help me find flights from Las Vegas to Ontario?
Once you have performed a search for Las Vegas to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Las Vegas to Ontario right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Las Vegas to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.