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Cheap flights from Ontario to Los Angeles from $136

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Los Angeles departing on 8/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:58 am - 9:54 pm
ONT
-
LAX
12h 56m
1 stop
Frontier Logo
6:30 am - 3:14 pm
LAX
-
ONT
8h 44m
1 stop
$151Frontier
Wed, Aug 12 - Sat, Aug 15
Frontier Logo
8:58 am - 9:54 pm
ONT
-
LAX
12h 56m
1 stop
Frontier Logo
6:30 am - 11:50 pm
LAX
-
ONT
17h 20m
2 stops
$192Frontier
Wed, Aug 12 - Sat, Aug 15
Frontier Logo
2:26 pm - 9:01 pm
ONT
-
LAX
6h 35m
1 stop
Frontier Logo
11:47 am - 4:10 pm
LAX
-
ONT
4h 23m
1 stop
$201Frontier
Thu, Oct 1 - Tue, Oct 6
Frontier Logo
8:58 am - 9:54 pm
ONT
-
LAX
12h 56m
1 stop
Frontier Logo
7:07 pm - 11:02 am
LAX
-
ONT
15h 55m
1 stop
$214Frontier
Wed, Aug 12 - Sun, Aug 16
Frontier Logo
8:58 am - 9:54 pm
ONT
-
LAX
12h 56m
1 stop
Frontier Logo
6:30 am - 3:14 pm
LAX
-
ONT
8h 44m
1 stop
$226Frontier
Wed, Aug 12 - Sat, Aug 15
Frontier Logo
3:40 pm - 3:05 pm
ONT
-
LAX
23h 25m
1 stop
Frontier Logo
7:52 pm - 11:02 am
LAX
-
ONT
15h 10m
1 stop
$237Frontier
Fri, Jul 31 - Fri, Aug 7
Frontier Logo
8:58 am - 9:48 pm
ONT
-
LAX
12h 50m
1 stop
Frontier Logo
8:49 pm - 10:04 am
LAX
-
ONT
13h 15m
1 stop
$247Frontier
Sat, Aug 15 - Mon, Aug 17
Frontier Logo
10:17 pm - 9:29 am
ONT
-
LAX
11h 12m
1 stop
Frontier Logo
7:07 pm - 2:03 pm
LAX
-
ONT
18h 56m
1 stop
$248Frontier
Fri, Aug 21 - Mon, Aug 24
Frontier Logo
10:17 pm - 9:29 am
ONT
-
LAX
11h 12m
1 stop
Frontier Logo
7:07 pm - 2:03 pm
LAX
-
ONT
18h 56m
1 stop
$249Frontier
Fri, Aug 21 - Mon, Aug 24
Frontier Logo
8:58 am - 9:59 pm
ONT
-
LAX
13h 01m
1 stop
Frontier Logo
6:30 am - 3:14 pm
LAX
-
ONT
8h 44m
1 stop
$260Frontier
Sat, Aug 1 - Sat, Aug 8

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Frontier flights from Ontario to Los Angeles

Our best Frontier deals on Ontario to Los Angeles flight tickets
Frontier
Aug 12
ONT8:58 amOntario
12h 56m
1 stop
LAX9:54 pmLos Angeles
Aug 15
LAX6:30 amLos Angeles
8h 44m
1 stop
ONT3:14 pmOntario
$151
Frontier
Aug 12
ONT8:58 amOntario
12h 56m
1 stop
LAX9:54 pmLos Angeles
Aug 15
LAX6:30 amLos Angeles
17h 20m
2 stops
ONT11:50 pmOntario
$192
Frontier
Oct 1
ONT2:26 pmOntario
6h 35m
1 stop
LAX9:01 pmLos Angeles
Oct 6
LAX11:47 amLos Angeles
4h 23m
1 stop
ONT4:10 pmOntario
$201

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Los Angeles that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 6, 2026.
Use the filters below to find and compare flights from Ontario to Los Angeles that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 8/12

8:58 am-9:54 pm

1 stop12h 56m

Los Angeles

Sat 8/15

6:30 am-3:14 pm

1 stop8h 44m

$151

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 8/12

8:58 am-9:54 pm

1 stop12h 56m

Los Angeles

Sat 8/15

6:30 am-11:50 pm

2 stops17h 20m

$192
Quickest round-trip

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Thu 10/1

2:26 pm-9:01 pm

1 stop6h 35m

Los Angeles

Tue 10/6

11:47 am-4:10 pm

1 stop4h 23m

$201

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 8/12

8:58 am-9:54 pm

1 stop12h 56m

Los Angeles

Sun 8/16

7:07 pm-11:02 am

1 stop15h 55m

$214

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 8/12

8:58 am-9:54 pm

1 stop12h 56m

Los Angeles

Sat 8/15

6:30 am-3:14 pm

1 stop8h 44m

$226

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Fri 7/31

3:40 pm-3:05 pm

1 stop23h 25m

Los Angeles

Fri 8/7

7:52 pm-11:02 am

1 stop15h 10m

$237

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sat 8/15

8:58 am-9:48 pm

1 stop12h 50m

Los Angeles

Mon 8/17

8:49 pm-10:04 am

1 stop13h 15m

$247

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Fri 8/21

10:17 pm-9:29 am

1 stop11h 12m

Los Angeles

Mon 8/24

7:07 pm-2:03 pm

1 stop18h 56m

$248

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Fri 8/21

10:17 pm-9:29 am

1 stop11h 12m

Los Angeles

Mon 8/24

7:07 pm-2:03 pm

1 stop18h 56m

$249

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sat 8/1

8:58 am-9:59 pm

1 stop13h 01m

Los Angeles

Sat 8/8

6:30 am-3:14 pm

1 stop8h 44m

$260

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

How to get the cheapest flight ticket from Ontario to Los Angeles

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Ontario to Los Angeles flights?

You could potentially save up to 67% on your flight if you consider stops on a Ontario to Los Angeles flight.

When to book flights from Ontario to Los Angeles

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Los Angeles according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Los Angeles (ONT to LAX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Los Angeles

Fastest flight time

4h 34m

Direct flights

None
The fastest flight from Ontario to Los Angeles takes 4h 34m
There are no direct flights from Ontario to Los Angeles. There are no popular flight routes from Ontario to Los Angeles.
Search flight deals

Frequently asked questions about flying from Ontario to Los Angeles

  • How far is Ontario to Los Angeles by plane?

    There are 38.0 mi between Ontario and Los Angeles. 4h 34m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Ontario Airport to Los Angeles Airport?

    Prices for flights from Ontario Airport to Los Angeles Airport are updated daily.

  • How old do you have to be to fly from Ontario Airport to Los Angeles Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Los Angeles Airport.

  • What documentation or ID do you need to fly to Los Angeles Airport?

    The necessary travel and health documents for your Los Angeles Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Los Angeles?

Book flights to Los Angeles if you plan to visit one of these locations
Avalon
Laguna Beach
Big Bear Lake
Temecula
Carlsbad
Riverside
Oceanside
Big Bear
Malibu
Inglewood
San Clemente
Pasadena
Newport Beach
Orange
Ventura
Huntington Beach
Irvine
Rancho Cucamonga
Buena Park
Garden Grove

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Los Angeles?

Finding the right flight to Los Angeles from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Los Angeles quick and easy, saving you time and money.

Can I find flights from Ontario to Los Angeles with flexible booking policies on momondo?

Yes. All flights to Los Angeles from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Los Angeles?

Once you have performed a search for Ontario to Los Angeles flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Los Angeles right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Los Angeles now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Los Angeles and let you know when they change.

An easier way to manage your Los Angeles trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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