In terms of precipitation, rainfall in Los Angeles ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit Los Angeles when rainfall is around 0.0 in.

If weather is an important factor for your trip to Los Angeles, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

What is the cheapest time of day to fly from ONT to LAX?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Los Angeles as you normally would.

Can I find deals for flights from Ontario to Los Angeles that include hotel bookings?

Yes. In addition to deals on Ontario to Los Angeles flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Los Angeles?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Los Angeles.

Can I find deals for business class flights from Ontario to Los Angeles?

Yes. Cheapflights offers flight deals from Ontario to Los Angeles by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$303+ Flights from Ontario to Los Angeles

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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Cheap flight deals from Ontario to Los Angeles

Round-trip from	$303 (SmartFares)

From Ontario to Los Angeles

Search Deals

Find flight deals from Ontario to Los Angeles

Cheapest flights from Ontario to Los Angeles
Explore the most affordable flight options available from Ontario to Los Angeles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Sat 8/237:10 amONT - LAX

1 stop5h 51mHawaiian Airlines

Mon 8/254:48 pmLAX - ONT

1 stop7h 05mHawaiian Airlines

Deal found 7/29

$303

Sat 9/65:49 pmONT - LAX

1 stop6h 12mAlaska Airlines

Mon 9/84:48 pmLAX - ONT

1 stop7h 06mAlaska Airlines

Deal found 7/29

$572

Sat 9/610:06 amONT - LAX

2 stops9h 48mMultiple Airlines

Mon 9/86:07 pmLAX - ONT

1 stop5h 47mMultiple Airlines

Deal found 7/29

$573

Best flights from Ontario to Los Angeles
Discover carefully curated flight deals from Ontario to Los Angeles that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Sat 8/237:10 amONT - LAX

1 stop5h 51mHawaiian Airlines

Mon 8/254:48 pmLAX - ONT

1 stop7h 05mHawaiian Airlines

Deal found 7/29

$303

Sat 9/65:49 pmONT - LAX

1 stop6h 12mAlaska Airlines

Mon 9/84:48 pmLAX - ONT

1 stop7h 06mAlaska Airlines

Deal found 7/29

$572

Sat 9/610:06 amONT - LAX

2 stops9h 48mMultiple Airlines

Mon 9/86:07 pmLAX - ONT

1 stop5h 47mMultiple Airlines

Deal found 7/29

$573

Last-minute flights from Ontario to Los Angeles
Discover last-minute flight deals from Ontario to Los Angeles. Data last updated July 31, 2025 and is based on user searches.

Sat 8/237:10 amONT - LAX

1 stop5h 51mHawaiian Airlines

Mon 8/254:48 pmLAX - ONT

1 stop7h 05mHawaiian Airlines

Deal found 7/29

$303

Fly from

Fly to

Route

Depart

Return

Price

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sat 8/23

7:10 am-1:01 pm

1 stop5h 51m

Los Angeles

Mon 8/25

4:48 pm-11:53 pm

1 stop7h 05m

$303

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sat 9/6

5:49 pm-12:01 am

1 stop6h 12m

Los Angeles

Mon 9/8

4:48 pm-11:54 pm

1 stop7h 06m

$572

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sat 9/6

10:06 am-7:54 pm

2 stops9h 48m

Los Angeles

Mon 9/8

6:07 pm-11:54 pm

1 stop5h 47m

$573

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Ontario to Los Angeles

Have a flexible travel schedule? Discover the best time to fly to Los Angeles from Ontario with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Ontario to Los Angeles?

Currently, January is the cheapest month in which you can book a flight from Ontario to Los Angeles (average of $246). Flying from Ontario to Los Angeles in March is currently the most expensive (average of $326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Los Angeles

Peruse reviews from past customers who have flown with Alaska Airlines and Hawaiian Airlines from Ontario to Los Angeles to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.8

Good

2,611 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Can I find deals for flights from Ontario to Los Angeles that include hotel bookings?
Yes. In addition to deals on Ontario to Los Angeles flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Los Angeles?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Los Angeles.
Can I find deals for business class flights from Ontario to Los Angeles?
Yes. Cheapflights offers flight deals from Ontario to Los Angeles by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ontario to Los Angeles?
Currently, January is the cheapest month in which you can book a flight from Ontario to Los Angeles (average of $246). Flying from Ontario to Los Angeles in March is currently the most expensive (average of $326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Stanton

Inglewood

Universal City

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Santa Clarita

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El Segundo

Hesperia

Glendale

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$303+ Cheap flights from Ontario to Los Angeles (ONT - LAX)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Los Angeles with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Los Angeles

Round-trip from

Find flight deals from Ontario to Los Angeles

Cheapest flights from Ontario to Los AngelesExplore the most affordable flight options available from Ontario to Los Angeles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Explore the most affordable flight options available from Ontario to Los Angeles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Los Angeles that are best for you.

Best time to book a flight from Ontario to Los Angeles

Have a flexible travel schedule? Discover the best time to fly to Los Angeles from Ontario with our price prediction graph.

Cheapflights Insights

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

What is the cheapest month to book a flight from Ontario to Los Angeles?

Reviews of airlines servicing Los Angeles

Peruse reviews from past customers who have flown with Alaska Airlines and Hawaiian Airlines from Ontario to Los Angeles to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Los Angeles. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Ontario to Los Angeles that include hotel bookings?

How can I find direct flights from Ontario to Los Angeles?

Can I find deals for business class flights from Ontario to Los Angeles?

What is the cheapest month to book a flight from Ontario to Los Angeles?

Traveling to a place near Los Angeles?

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Alternative routes for Ontario to Los Angeles

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Cheapest flights from Ontario to Los Angeles
Explore the most affordable flight options available from Ontario to Los Angeles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.