What is the most punctual flight time for Los Angeles to Ontario flights?

Generally, flights departing at night tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

How many flights depart from Los Angeles to Ontario on average per week?

The number of flights available between Los Angeles and Ontario is 4 per week as of December 2025. The most frequent departure day is Mon, with 25% of weekly flights leaving on this day.

How often are flights from Los Angeles to Ontario delayed?

Historically, on average around 25% of flights between Los Angeles and Ontario have experienced a delay on any given week. The average delay length over the past 12 months has been 84 minutes.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Los Angeles to Ontario flights?

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 17% of their flights experiencing any sort of delay.

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

Prices for flights from Los Angeles Airport to Ontario Airport refresh daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Los Angeles Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The necessary travel and health documents for your Ontario 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.

$68 Cheap Flights from Los Angeles to Ontario in 2025/26

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Find the cheapest flights from Los Angeles to Los Angeles

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2:39 pm - 11:24 pm

LAX

ONT

8h 45m1 stop

8:27 pm - 10:25 am

ONT

LAX

13h 58m1 stop

$128Frontier

Sat, Jan 24 - Sun, Jan 25

4:07 pm - 10:09 am

LAX

ONT

18h 02m1 stop

3:07 pm - 9:22 am

ONT

LAX

18h 15m1 stop

$132Multiple Airlines

Wed, Jan 21 - Wed, Jan 28

2:46 pm - 7:53 pm

LAX

ONT

5h 07m1 stop

11:04 am - 3:12 pm

ONT

LAX

4h 08m1 stop

$134Multiple Airlines

Thu, Jan 22 - Thu, Jan 29

2:04 pm - 7:53 pm

LAX

ONT

5h 49m1 stop

7:15 am - 11:31 pm

ONT

LAX

16h 16m1 stop

$137Frontier

Fri, Jan 23 - Tue, Jan 27

9:17 am - 1:32 pm

LAX

ONT

4h 15m1 stop

10:18 am - 3:12 pm

ONT

LAX

4h 54m1 stop

$146Multiple Airlines

Fri, Jan 23 - Fri, Jan 30

9:17 am - 1:32 pm

LAX

ONT

4h 15m1 stop

10:18 am - 3:12 pm

ONT

LAX

4h 54m1 stop

$148Multiple Airlines

Fri, Jan 23 - Fri, Jan 30

4:07 pm - 7:36 am

LAX

ONT

15h 29m1 stop

6:49 pm - 8:20 am

ONT

LAX

13h 31m1 stop

$157Multiple Airlines

Sat, Jan 10 - Wed, Jan 14

9:17 am - 11:24 pm

LAX

ONT

14h 07m2 stops

8:27 pm - 8:22 am

ONT

LAX

11h 55m1 stop

$159Multiple Airlines

Sat, Jan 24 - Sun, Jan 25

4:07 pm - 7:36 am

LAX

ONT

15h 29m1 stop

2:34 pm - 7:22 pm

ONT

LAX

4h 48m1 stop

$160Multiple Airlines

Sat, Jan 10 - Thu, Jan 15

9:17 am - 5:44 pm

LAX

ONT

8h 27m1 stop

2:34 pm - 7:22 pm

ONT

LAX

4h 48m1 stop

$162Multiple Airlines

Fri, Jan 16 - Sun, Jan 18

Frontier flights from Los Angeles to Ontario

Our best Frontier deals on Los Angeles to Ontario flight tickets

Frontier

Jan 24

LAX2:39 pmLos Angeles

8h 45m

1 stop

ONT11:24 pmOntario

Jan 25

ONT8:27 pmOntario

13h 58m

1 stop

LAX10:25 amLos Angeles

$128

Find similar

Frontier

Jan 31

LAX2:39 pmLos Angeles

8h 45m

1 stop

ONT11:24 pmOntario

Feb 1

ONT5:21 pmOntario

15h 15m

2 stops

LAX8:36 amLos Angeles

$151

Find similar

Frontier

Jan 24

LAX2:39 pmLos Angeles

8h 45m

1 stop

ONT11:24 pmOntario

Jan 31

ONT3:04 pmOntario

17h 32m

2 stops

LAX8:36 amLos Angeles

$158

Find similar

Alaska Airlines flights from Los Angeles to Ontario

Our best Alaska Airlines deals on Los Angeles to Ontario flight tickets

Alaska Airlines

Dec 27

LAX5:45 pmLos Angeles

6h 29m

1 stop

ONT12:14 amOntario

Dec 31

ONT6:00 amOntario

14h 10m

2 stops

LAX8:10 pmLos Angeles

$1,901

Find similar

Alaska Airlines

Dec 27

LAX5:45 pmLos Angeles

6h 29m

1 stop

ONT12:14 amOntario

Dec 30

ONT6:05 pmOntario

6h 17m

1 stop

LAX12:22 amLos Angeles

$2,005

Find similar

Alaska Airlines

Dec 27

LAX5:45 pmLos Angeles

6h 29m

1 stop

ONT12:14 amOntario

Dec 31

ONT6:00 amOntario

8h 20m

1 stop

LAX2:20 pmLos Angeles

$2,053

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/24

2:39 pm-11:24 pm

1 stop8h 45m

Ontario

Sun 1/25

8:27 pm-10:25 am

1 stop13h 58m

$128

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Wed 1/21

4:07 pm-10:09 am

1 stop18h 02m

Ontario

Wed 1/28

3:07 pm-9:22 am

1 stop18h 15m

$132

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Thu 1/22

2:46 pm-7:53 pm

1 stop5h 07m

Ontario

Thu 1/29

11:04 am-3:12 pm

1 stop4h 08m

$134

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 1/23

2:04 pm-7:53 pm

1 stop5h 49m

Ontario

Tue 1/27

7:15 am-11:31 pm

1 stop16h 16m

$137

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 1/23

9:17 am-1:32 pm

1 stop4h 15m

Ontario

Fri 1/30

10:18 am-3:12 pm

1 stop4h 54m

$146

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 1/23

9:17 am-1:32 pm

1 stop4h 15m

Ontario

Fri 1/30

10:18 am-3:12 pm

1 stop4h 54m

$148

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/10

4:07 pm-7:36 am

1 stop15h 29m

Ontario

Wed 1/14

6:49 pm-8:20 am

1 stop13h 31m

$157

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/24

9:17 am-11:24 pm

2 stops14h 07m

Ontario

Sun 1/25

8:27 pm-8:22 am

1 stop11h 55m

$159

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/10

4:07 pm-7:36 am

1 stop15h 29m

Ontario

Thu 1/15

2:34 pm-7:22 pm

1 stop4h 48m

$160

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 1/16

9:17 am-5:44 pm

1 stop8h 27m

Ontario

Sun 1/18

2:34 pm-7:22 pm

1 stop4h 48m

$162

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

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

Airlines

Delays

Other information

What is the cheapest airline that flies from Los Angeles to Ontario?

Frontier is the most popular carrier operating from Los Angeles to Ontario

When to book flights from Los Angeles to Ontario

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

Estimated round-trip price

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

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

Fastest flight time	3h 59m
Direct flights	None

The fastest flight from Los Angeles to Ontario takes 3h 59m

There are no direct flights from Los Angeles to Ontario. There are no popular flight routes from Los Angeles to Ontario.

Search flight deals

How far is Los Angeles to Ontario by plane?
The distance between Los Angeles and Ontario is about 38.0 mi. 3h 59m is a normal flight duration for this route.
When did momondo last update prices for flights from Los Angeles Airport to Ontario Airport?
Prices for flights from Los Angeles Airport to Ontario Airport refresh daily.
How old do you have to be to fly from Los Angeles Airport to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Los Angeles Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario 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.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Los Angeles to Ontario for you.

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

Yes. momondo allows you to filter the results for Los Angeles to Ontario flights to just show those with flexible booking policies.

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

Once all potential Los Angeles to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Ontario from Los Angeles are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Ontario 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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Flights to San Franciscofrom $59

Flights to Las Vegasfrom $49

Flights to Washington, D.C.from $58

Flights to Bostonfrom $51

Flights to Atlantafrom $44

Flights to Dallasfrom $51

Flights to Seattlefrom $57

Cheap flights from Los Angeles to Los Angeles from $68

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Los Angeles to Los Angeles departing on 2/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

See travel insights to Los Angeles from

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

What is the cheapest airline that flies from Los Angeles to Ontario?

Frontier is the most popular carrier operating from Los Angeles to Ontario

How often are flights from Los Angeles to Ontario delayed?

Historically, on average around 25% of flights between Los Angeles and Ontario have experienced a delay on any given week. The average delay length over the past 12 months has been 84 minutes.

What is the most punctual flight time for Los Angeles to Ontario flights?

Generally, flights departing at night tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Los Angeles to Ontario flights?

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 17% of their flights experiencing any sort of delay.

How many flights depart from Los Angeles to Ontario on average per week?

The number of flights available between Los Angeles and Ontario is 4 per week as of December 2025. The most frequent departure day is Mon, with 25% of weekly flights leaving on this day.

When to book flights from Los Angeles to Ontario

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

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

Fastest flight time

Direct flights

How far is Los Angeles to Ontario by plane?

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

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

What documentation or ID do you need to fly to Ontario Airport?

Why use momondo?

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

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

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

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

An easier way to manage your Ontario 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California