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Flights from Las Vegas to Ontario
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Find Las Vegas to Ontario flights starting at CAD 12.

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip
      • Cheapest nonstop
        LAS07:00
        1h 6m
        Nonstop
        ONT08:06
        Thu, Dec 26|Las Vegas - Ontario|Frontier Airlines
        CAD 12CAD 29
        57% OFF
        57% OFF
        CAD 29CAD 12

        Choose Frontier Airlines flights from Las Vegas to Ontario. The one-way direct flight with Frontier Airlines departs from Harry Reid International Airport on Thu, Dec 26, arriving at Ontario International Airport. One-way Prices start from CAD 12 including taxes and charges.

      • LAS11:20
        1h 9m
        Nonstop
        ONT12:29
        Thu, Dec 19|Las Vegas - Ontario|Frontier Airlines
        CAD 12CAD 29
        57% OFF
        57% OFF
        CAD 29CAD 12

        Choose Frontier Airlines flights from Las Vegas to Ontario. The one-way direct flight with Frontier Airlines departs from Harry Reid International Airport on Thu, Dec 19, arriving at Ontario International Airport. One-way Prices start from CAD 12 including taxes and charges.

      • LAS06:00
        1h 9m
        Nonstop
        ONT07:09
        Fri, Dec 20|Las Vegas - Ontario|Frontier Airlines
        CAD 13CAD 29
        54% OFF
        54% OFF
        CAD 29CAD 13

        Choose Frontier Airlines flights from Las Vegas to Ontario. The one-way direct flight with Frontier Airlines departs from Harry Reid International Airport on Fri, Dec 20, arriving at Ontario International Airport. One-way Prices start from CAD 13 including taxes and charges.

      • LAS16:47
        1h 8m
        Nonstop
        ONT17:55
        Thu, Jan 30|Las Vegas - Ontario|Frontier Airlines
        CAD 18
        CAD 18

        Choose Frontier Airlines flights from Las Vegas to Ontario. The one-way direct flight with Frontier Airlines departs from Harry Reid International Airport on Thu, Jan 30, arriving at Ontario International Airport. One-way Prices start from CAD 18 including taxes and charges.

      • LAS10:00
        1h 8m
        Nonstop
        ONT11:08
        Mon, Jan 13|Las Vegas - Ontario|Frontier Airlines
        CAD 19
        CAD 19

        Choose Frontier Airlines flights from Las Vegas to Ontario. The one-way direct flight with Frontier Airlines departs from Harry Reid International Airport on Mon, Jan 13, arriving at Ontario International Airport. One-way Prices start from CAD 19 including taxes and charges.

      • LAS06:00
        1h 9m
        Nonstop
        ONT07:09
        Tue, Dec 31|Las Vegas - Ontario|Frontier Airlines
        CAD 19
        CAD 19

        Choose Frontier Airlines flights from Las Vegas to Ontario. The one-way direct flight with Frontier Airlines departs from Harry Reid International Airport on Tue, Dec 31, arriving at Ontario International Airport. One-way Prices start from CAD 19 including taxes and charges.

      • LAS06:05
        1h 6m
        Nonstop
        ONT07:11
        Fri, Jan 24|Las Vegas - Ontario|Frontier Airlines
        CAD 19
        CAD 19

        Choose Frontier Airlines flights from Las Vegas to Ontario. The one-way direct flight with Frontier Airlines departs from Harry Reid International Airport on Fri, Jan 24, arriving at Ontario International Airport. One-way Prices start from CAD 19 including taxes and charges.

      • LAS06:05
        1h 9m
        Nonstop
        ONT07:14
        Sat, Dec 14|Las Vegas - Ontario|Frontier Airlines
        CAD 19
        CAD 19

        Choose Frontier Airlines flights from Las Vegas to Ontario. The one-way direct flight with Frontier Airlines departs from Harry Reid International Airport on Sat, Dec 14, arriving at Ontario International Airport. One-way Prices start from CAD 19 including taxes and charges.

      • LAS14:05
        1h 9m
        Nonstop
        ONT15:14
        Wed, Dec 25|Las Vegas - Ontario|Frontier Airlines
        CAD 19
        CAD 19

        Choose Frontier Airlines flights from Las Vegas to Ontario. The one-way direct flight with Frontier Airlines departs from Harry Reid International Airport on Wed, Dec 25, arriving at Ontario International Airport. One-way Prices start from CAD 19 including taxes and charges.

      • LAS06:00
        1h 9m
        Nonstop
        ONT07:09
        Mon, Dec 30|Las Vegas - Ontario|Frontier Airlines
        CAD 20
        CAD 20

        Choose Frontier Airlines flights from Las Vegas to Ontario. The one-way direct flight with Frontier Airlines departs from Harry Reid International Airport on Mon, Dec 30, arriving at Ontario International Airport. One-way Prices start from CAD 20 including taxes and charges.

      • LAS13:00
        3h 5m
        Nonstop
        ONT14:00
        Thu, Dec 19|Las Vegas - Ontario|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to fly from Las Vegas to Ontario?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Find Cheapest Airlines Flying from Las Vegas to Ontario

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From CAD 12
Southwest Airlines
From CAD 111
American Airlines
From CAD 170
Alaska Airlines
From CAD 200
United Airlines
From CAD 202
Delta Air Lines
From CAD 430
Hawaiian Airlines
From CAD 712

Find more flights and airlines

Alternative Routes for Las Vegas to Ontario Flights

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Las Vegas to Ontario.

  • Cheapest
    Frontier Airlines
    LAS
    11:20
    1h 9m
    Nonstop
    ONT
    12:29
    Harry Reid International Airport - Ontario International Airport
    Thu, Dec 19Frontier Airlines
    CAD 12
  • Frontier Airlines
    LAS
    11:20
    1h 9m
    Nonstop
    ONT
    12:29
    Harry Reid International Airport - Ontario International Airport
    Thu, Dec 19Frontier Airlines
    CAD 12
    Find More Flights

FAQ

  • When are flight tickets from Las Vegas (LAS) to Ontario (ONT) the cheapest?

    Airlines adjust prices for flights from Las Vegas to Ontario based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much are flights from Las Vegas (LAS) to Ontario (ONT) cost?

    According to Trip.com's data, the lowest price is around CAD 205.

  • What's the most popular airline for direct flights from Las Vegas (LAS) to Ontario (ONT)?

    Southwest Airlines operates 1 direct flights from Las Vegas (LAS) to Ontario (ONT).

How to find a cheap flight from Las Vegas to Ontario

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 Las Vegas to Ontario. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information for Las Vegas to Ontario Flights

Cheapest direct flight priceCAD 12
Cheapest return ticket priceCAD 47
Off-season travel monthFebruary
Peak season for travelMarch
Flight distance12,242.65km
Popular airlineFrontier Airlines

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