LAX - ONT

$45 Find Cheap Flights from Los Angeles to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Los Angeles to Ontario departing on 11/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Los Angeles to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Los Angeles to Ontario, as well as popular online travel agencies
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Los Angeles to Ontario (LAX-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Los Angeles to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Los Angeles to Ontario

Thu, Nov 6 - Thu, Nov 13
Frontier Logo
3:27 pm - 9:57 pmLAX-ONT
6h 30m1 stop
Frontier Logo
6:00 am - 1:07 pmONT-LAX
7h 07m1 stop
$87Frontier
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Wed, Nov 5 - Wed, Nov 12
Frontier Logo
3:27 pm - 9:10 amLAX-ONT
17h 43m1 stop
Frontier Logo
8:00 am - 7:53 pmONT-LAX
11h 53m1 stop
$88Frontier
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Thu, Dec 4 - Mon, Dec 8
Frontier Logo
6:00 pm - 1:31 pmLAX-ONT
19h 31m1 stop
Frontier Logo
6:30 am - 8:06 pmONT-LAX
13h 36m1 stop
$99Frontier
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Tue, Nov 4 - Tue, Nov 11
Multiple Airlines Logo
9:04 am - 8:42 pmLAX-ONT
11h 38m1 stop
Multiple Airlines Logo
8:00 am - 9:44 amONT-LAX
25h 44m1 stop
$100Multiple Airlines
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Fri, Nov 7 - Mon, Nov 10
Frontier Logo
11:56 am - 9:57 pmLAX-ONT
10h 01m1 stop
Frontier Logo
6:00 am - 12:09 pmONT-LAX
6h 09m1 stop
$123Frontier
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Fri, Nov 7 - Mon, Nov 10
Frontier Logo
11:56 am - 9:57 pmLAX-ONT
10h 01m1 stop
Frontier Logo
6:00 am - 12:09 pmONT-LAX
6h 09m1 stop
$125Frontier
Find Deal
Thu, Nov 13 - Mon, Nov 17
Frontier Logo
3:27 pm - 9:57 pmLAX-ONT
6h 30m1 stop
Frontier Logo
10:43 pm - 7:53 pmONT-LAX
21h 10m1 stop
$129Frontier
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Wed, Nov 5 - Wed, Nov 12
Frontier Logo
3:27 pm - 8:42 pmLAX-ONT
5h 15m1 stop
Frontier Logo
8:45 am - 5:44 pmONT-LAX
8h 59m2 stops
$130Frontier
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Tue, Nov 4 - Tue, Nov 11
Multiple Airlines Logo
7:48 pm - 9:27 pmLAX-ONT
25h 39m2 stops
Multiple Airlines Logo
8:00 am - 9:44 amONT-LAX
25h 44m1 stop
$132Multiple Airlines
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Mon, Jan 19 - Mon, Feb 2
Alaska Airlines Logo
7:00 am - 1:06 pmLAX-ONT
6h 06m1 stop
Alaska Airlines Logo
4:03 pm - 10:59 pmONT-LAX
6h 56m1 stop
$339Alaska Airlines
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Everything you should know

Cheapest round-trip
$87
Frontier
Thu 11/6Thu 11/13
LAX - ONT • 1 stop
Cheapest one-way
$45
Frontier
Thu 11/6
LAX - ONT • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Booking Insights

KAYAK's insights & trends for Los Angeles to Ontario flights

Get data-powered insights and trends into flights from Los Angeles to Ontario to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Los Angeles to Ontario?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Los Angeles to Ontario were found on Frontier ($87) and Alaska Airlines ($339).

Find deals

Good to know

Low seasonSeptember
Cheapest flight$45
Best time to beat the crowds with an average 62% drop in price.
Most popular time to fly and prices are also 32% lower on average.
Flight from Los Angeles to Ontario

When to book flights from Los Angeles to Ontario

Are your dates flexible? Find out the best times to travel from Los Angeles to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Los Angeles to Ontario

  • What is the cheapest flight from Los Angeles to Ontario?

    In the last 3 days, the lowest price for a flight from Los Angeles to Ontario was $45 for a one-way ticket and $87 for a round-trip.

  • Do I need a passport to fly between Los Angeles and Ontario?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Los Angeles to Ontario?

    When flying out of Los Angeles you will be using Los Angeles. You will be landing at Ontario, also known as Ontario.

  • Which aircraft models fly most regularly from Los Angeles to Ontario?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Los Angeles to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Los Angeles to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Los Angeles to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Los Angeles is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Los Angeles to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Los Angeles with another airline. Booking your flights between Los Angeles and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Los Angeles to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Los Angeles up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Los Angeles to Ontario

Information on your arrival and departure airports

Los Angeles (LAX)
Ontario (ONT)

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