LAX - ONT

$53 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
$100
Typical prices: $174-$323
Frontier
Fri 9/21Fri 9/28
LAX - ONT • 1 stop
Cheapest one-way
$53
Typical prices: $77-$193
Frontier
Fri 9/21
LAX - ONT • 1 stop
When to travel
September
Cheapest • 30% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Las Vegas Harry Reid Intl (LAS)
Cheapest • Avg $239 (round-trip)
Dallas/Fort Worth (DFW)
Shortest trip • 11h 42m (one-way)
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Insights
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Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Los Angeles to Ontario

Mon, Sep 21 - Mon, Sep 28
Frontier Logo
8:44 am - 7:36 pmLAX  Los Angeles-ONT Ontario
10h 52m1 stop San Francisco
Frontier Logo
12:07 pm - 10:37 amONT  Ontario-LAX Los Angeles
22h 30m1 stop San Francisco
$100Frontier
Thu, Oct 1 - Mon, Oct 26
Frontier Logo
8:44 am - 7:36 pmLAX  Los Angeles-ONT Ontario
10h 52m1 stop San Francisco
Frontier Logo
12:01 pm - 9:01 pmONT  Ontario-LAX Los Angeles
9h 00m1 stop San Francisco
$106Frontier
Mon, Sep 28 - Mon, Oct 26
Frontier Logo
8:44 am - 7:36 pmLAX  Los Angeles-ONT Ontario
10h 52m1 stop San Francisco
Frontier Logo
12:01 pm - 9:01 pmONT  Ontario-LAX Los Angeles
9h 00m1 stop San Francisco
$107Frontier
Thu, Nov 5 - Mon, Nov 9
Frontier Logo
6:48 pm - 7:28 pmLAX  Los Angeles-ONT Ontario
24h 40m1 stop San Jose
Frontier Logo
12:01 pm - 10:28 pmONT  Ontario-LAX Los Angeles
10h 27m1 stop San Francisco
$112Frontier
Fri, Oct 2 - Mon, Oct 26
Frontier Logo
8:44 am - 7:36 pmLAX  Los Angeles-ONT Ontario
10h 52m1 stop San Francisco
Frontier Logo
12:01 pm - 9:01 pmONT  Ontario-LAX Los Angeles
9h 00m1 stop San Francisco
$119Frontier
Thu, Oct 1 - Wed, Oct 28
Frontier Logo
8:44 am - 7:36 pmLAX  Los Angeles-ONT Ontario
10h 52m1 stop San Francisco
Frontier Logo
11:52 am - 12:23 amONT  Ontario-LAX Los Angeles
12h 31m1 stop Denver Intl
$124Frontier
Mon, Sep 28 - Wed, Oct 28
Frontier Logo
8:44 am - 7:36 pmLAX  Los Angeles-ONT Ontario
10h 52m1 stop San Francisco
Frontier Logo
11:52 am - 12:23 amONT  Ontario-LAX Los Angeles
12h 31m1 stop Denver Intl
$125Frontier
Thu, Oct 1 - Mon, Oct 5
Frontier Logo
8:44 am - 7:36 pmLAX  Los Angeles-ONT Ontario
10h 52m1 stop San Francisco
Frontier Logo
12:07 pm - 10:37 amONT  Ontario-LAX Los Angeles
22h 30m1 stop San Francisco
$126Frontier
Thu, Oct 1 - Thu, Oct 29
Frontier Logo
8:44 am - 7:36 pmLAX  Los Angeles-ONT Ontario
10h 52m1 stop San Francisco
Frontier Logo
12:01 pm - 10:28 pmONT  Ontario-LAX Los Angeles
10h 27m1 stop San Francisco
$129Frontier
Mon, Sep 28 - Tue, Oct 27
Frontier Logo
8:44 am - 7:36 pmLAX  Los Angeles-ONT Ontario
10h 52m1 stop San Francisco
Frontier Logo
10:35 am - 4:16 pmONT  Ontario-LAX Los Angeles
5h 41m1 stop Las Vegas Harry Reid Intl
$130Frontier
Booking Insights

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 from Los Angeles to Ontario with more confidence.

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

Round-trip flights from Los Angeles to Ontario start at $100. Prices are below average for this route right now, with typical round-trip fares ranging from $174 to $323. The lowest price found in the past 5 days was $100 on Frontier.

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

Wednesday is the cheapest day of the week to fly from Los Angeles to Ontario, it is 23% cheaper than the average day. Monday is the most expensive day with flight prices 77% higher than average. Based on deals found by KAYAK users in the last 12 months.

Find deals

Key details for Los Angeles to Ontario flights

Low season

February

Cheapest flight

$53
Most popular time to fly with an average 1% increase in price.
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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).

  • 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.

  • 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) - 93% of one-stop connections
    • Dallas/Fort Worth (DFW) - 7% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

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

    Yes. Being flexible with your travel dates can save you up to 57% on the Los Angeles to Ontario route. Wednesday is the cheapest departure day at $174 round-trip on average, while Monday is the most expensive at $398, a difference of $224. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • At what point is a flight considered delayed from Los Angeles to Ontario?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Los Angeles to Ontario route, 100% of flights were delayed in the past 3 months, with delays averaging 56 minutes.

  • What popular places can I visit in Ontario?

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

  • 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 8h 45m 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.

  • 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 $100 to $934. That means the highest observed fare was about 9x 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 $69, which is 60% below the typical average for this route.

  • How do delay rates compare for morning and evening flights from Los Angeles to Ontario?

    Morning flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

  • 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 8h 45m, compared with 11h 42m via Dallas/Fort Worth (DFW).

  • 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

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

    Round-trip flights from Los Angeles to Ontario range from $174 to $323, with an average of $224 over the past 12 months. Anything below $174 counts as a good deal.

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 can be flexible, aim for a Wednesday departure instead of Monday. On this route, Wednesday flights average $174 - about $224 less than Monday (56% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Los Angeles to Ontario trip for September. Fares historically average $157 round-trip in that month - typically $668 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
    - Holiday Inn Ontario Airport By IHG

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)