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LAX - ONT

$65 Find Cheap Flights from Los Angeles to Ontario - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$153
Typical prices: $179-$323
Frontier
Wed 11/14Fri 11/16
LAX - ONT • 1 stop
Cheapest one-way
$65
Typical prices: $77-$193
Frontier
Mon 10/29
LAX - ONT • 1 stop
When to travel
October
Cheapest • 28% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Las Vegas Harry Reid Intl (LAS)
Cheapest • Avg $289 (round-trip)
Dallas/Fort Worth (DFW)
Shortest trip • 11h 42m (one-way)
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Cheap Flights from Los Angeles to Ontario (LAX-ONT)

 

Cheap flights from Los Angeles to Ontario with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Sat, Nov 14 - Mon, Nov 16
Frontier Logo
7:03 pm - 7:30 pmLAX  Los Angeles-ONT Ontario
24h 27m1 stop San Francisco
Frontier Logo
12:01 pm - 10:28 pmONT  Ontario-LAX Los Angeles
10h 27m1 stop San Francisco
$153Frontier
Tue, Dec 8 - Sun, Dec 13
Frontier Logo
6:40 pm - 11:23 pmLAX  Los Angeles-ONT Ontario
4h 43m1 stop San Francisco
Frontier Logo
7:26 pm - 11:04 pmONT  Ontario-LAX Los Angeles
27h 38m1 stop San Francisco
$153Frontier
Thu, Nov 5 - Thu, Nov 12
Frontier Logo
8:44 am - 7:30 pmLAX  Los Angeles-ONT Ontario
10h 46m1 stop San Francisco
Frontier Logo
5:06 pm - 10:38 pmONT  Ontario-LAX Los Angeles
29h 32m1 stop Seattle/Tacoma Intl
$156Frontier
Wed, Nov 4 - Wed, Nov 11
Frontier Logo
6:15 am - 11:51 pmLAX  Los Angeles-ONT Ontario
17h 36m1 stop Denver Intl
Frontier Logo
6:30 am - 2:29 pmONT  Ontario-LAX Los Angeles
7h 59m1 stop Denver Intl
$168Frontier
Mon, Nov 23 - Thu, Dec 3
Frontier Logo
6:48 pm - 12:24 amLAX  Los Angeles-ONT Ontario
5h 36m1 stop San Francisco
Frontier Logo
7:26 pm - 10:58 pmONT  Ontario-LAX Los Angeles
27h 32m1 stop San Francisco
$169Frontier
Sat, Nov 14 - Mon, Nov 16
Frontier Logo
7:03 pm - 7:30 pmLAX  Los Angeles-ONT Ontario
24h 27m1 stop San Francisco
Frontier Logo
12:01 pm - 4:16 pmONT  Ontario-LAX Los Angeles
28h 15m2 stops San Francisco Las Vegas Harry Reid Intl
$175Frontier
Mon, Nov 9 - Mon, Nov 16
Frontier Logo
8:44 am - 7:30 pmLAX  Los Angeles-ONT Ontario
10h 46m1 stop San Francisco
Frontier Logo
8:35 pm - 10:54 pmONT  Ontario-LAX Los Angeles
26h 19m2 stops Las Vegas Harry Reid Intl San Francisco
$178Frontier
Mon, Nov 9 - Thu, Nov 12
Frontier Logo
8:44 am - 7:30 pmLAX  Los Angeles-ONT Ontario
10h 46m1 stop San Francisco
Frontier Logo
12:01 pm - 10:41 amONT  Ontario-LAX Los Angeles
22h 40m1 stop San Francisco
$201Frontier
Mon, Nov 9 - Mon, Nov 16
Frontier Logo
8:44 am - 7:30 pmLAX  Los Angeles-ONT Ontario
10h 46m1 stop San Francisco
Frontier Logo
2:23 pm - 9:19 amONT  Ontario-LAX Los Angeles
18h 56m1 stop Las Vegas Harry Reid Intl
$202Frontier
Wed, Nov 11 - Sat, Nov 21
Frontier Logo
7:03 pm - 7:30 pmLAX  Los Angeles-ONT Ontario
24h 27m1 stop San Francisco
Frontier Logo
8:31 pm - 1:12 pmONT  Ontario-LAX Los Angeles
16h 41m1 stop San Francisco
$203Frontier

Price, demand and travel trends for Los Angeles to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Los Angeles to Ontario?

Round-trip flights from Los Angeles to Ontario typically range from $179 to $323. The lowest price found in the past 5 days was $153, on Frontier.

What's the cheapest day of the week to fly from Los Angeles to Ontario?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Los Angeles to Ontario. It’s 22% cheaper than the average day, while Tuesday is the most expensive, with prices 271% higher.

Find deals

Key details for Los Angeles to Ontario flights

Low season

January

Cheapest flight

$65
One-way 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

Your Los Angeles to Ontario flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Los Angeles to Ontario?

    Only Economy Class is available on flights from Los Angeles to Ontario.

  • How long is a flight from Los Angeles to Ontario?

    There are currently no nonstop flights available from Los Angeles to Ontario. Flights with 1 layover take between 9h 57m and 11h 42m in total, depending on the connection.

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

    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.

  • How much should I expect to pay for a Los Angeles to Ontario flight?

    Round-trip flights from Los Angeles to Ontario range from $179 to $323, with an average of $222 over the past 12 months. Anything below $179 counts as a good deal.

  • Have flight prices from Los Angeles to Ontario changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $153 to $907. That means the highest observed fare was about 6x higher than the lowest one.

  • How are flight prices from Los Angeles to Ontario looking right now?

    One-way fares from Los Angeles to Ontario are currently lower than usual. Average one-way flight prices are about $132, which is 24% below the typical average for this route.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

    • Fox
    • Thrifty
    • Europcar
    • Dollar
    • Alamo

  • Which airports can I use when flying from Los Angeles to Ontario?

    Flights from Los Angeles to Ontario usually depart from Los Angeles (LAX) and arrive at Ontario (ONT).

  • Which airports do connecting flights from Los Angeles to Ontario pass through?

    Connecting flights from Los Angeles to Ontario most commonly pass through:

    • Las Vegas Harry Reid Intl (LAS) - 86% of one-stop connections
    • Dallas/Fort Worth (DFW) - 14% of one-stop connections

  • Can I save money by using flexible dates for flights from Los Angeles to Ontario?

    Yes. Flexible dates can save you up to 79% on flights from Los Angeles to Ontario. Wednesday is the cheapest departure day at $174 round-trip on average, while Tuesday is the most expensive at $825, a difference of $651.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Los Angeles to Ontario?

    Flying via Las Vegas Harry Reid Intl (LAS) gives the shortest average 1-stop total travel time at 9h 57m, compared with 11h 42m via Dallas/Fort Worth (DFW).

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Your guide to booking Los Angeles to Ontario flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Tuesday. On this route, Wednesday flights average $174, about $651 less than Tuesday fares (79% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Los Angeles to Ontario trip for October. Fares historically average $160 round-trip in that month - typically $665 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

    • Azure Hotel & Suites, Trademark Collection by Wyndham
    • La Quinta Inn & Suites by Wyndham Ontario Airport
    • Ontario Airport Inn

More options for your flight from Los Angeles to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario
Hotels in Ontario
Vacations in Ontario