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.

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.

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.

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

The number of flights available between Los Angeles and Ontario is 3 per week as of December 2025. The most frequent departure day is Mon, with 33% of weekly flights leaving on this day.

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.

$67 Cheap Flights from Los Angeles to Ontario in 2025/26

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2:58 pm - 10:59 pm

LAX

ONT

8h 01m1 stop

7:15 am - 11:31 pm

ONT

LAX

16h 16m1 stop

$131Frontier

Tue, Jan 13 - Tue, Jan 20

9:17 am - 5:44 pm

LAX

ONT

8h 27m1 stop

8:48 pm - 9:27 am

ONT

LAX

12h 39m1 stop

$132Multiple Airlines

Thu, Jan 15 - Thu, Jan 22

9:17 am - 5:54 pm

LAX

ONT

8h 37m1 stop

7:15 am - 11:31 pm

ONT

LAX

16h 16m1 stop

$133Multiple Airlines

Wed, Jan 14 - Wed, Jan 21

9:12 am - 1:11 pm

LAX

ONT

3h 59m1 stop

6:43 pm - 8:15 am

ONT

LAX

13h 32m1 stop

$135Multiple Airlines

Thu, Feb 12 - Mon, Mar 2

9:17 am - 2:26 pm

LAX

ONT

5h 09m1 stop

10:18 pm - 8:22 am

ONT

LAX

10h 04m1 stop

$136Multiple Airlines

Sat, Jan 10 - Mon, Jan 12

3:25 pm - 9:50 am

LAX

ONT

18h 25m1 stop

10:18 pm - 8:22 am

ONT

LAX

10h 04m1 stop

$146Multiple Airlines

Tue, Jan 6 - Fri, Jan 16

9:17 am - 5:44 pm

LAX

ONT

8h 27m1 stop

9:10 pm - 8:20 am

ONT

LAX

11h 10m1 stop

$150Multiple Airlines

Fri, Jan 16 - Sat, Jan 17

2:58 pm - 10:59 pm

LAX

ONT

8h 01m1 stop

7:15 am - 10:54 am

ONT

LAX

27h 39m2 stops

$156Frontier

Tue, Jan 13 - Tue, Jan 20

9:17 am - 5:44 pm

LAX

ONT

8h 27m1 stop

10:18 am - 3:12 pm

ONT

LAX

4h 54m1 stop

$161Multiple Airlines

Fri, Jan 16 - Fri, Jan 23

9:17 am - 7:53 pm

LAX

ONT

10h 36m1 stop

8:05 pm - 1:16 pm

ONT

LAX

17h 11m2 stops

$162Multiple Airlines

Thu, Feb 5 - Mon, Feb 9

Frontier flights from Los Angeles to Ontario

Our best Frontier deals on Los Angeles to Ontario flight tickets

Frontier

Jan 13

LAX2:58 pmLos Angeles

8h 01m

1 stop

ONT10:59 pmOntario

Jan 20

ONT7:15 amOntario

16h 16m

1 stop

LAX11:31 pmLos Angeles

$131

Find similar

Frontier

Jan 14

LAX1:54 pmLos Angeles

9h 05m

1 stop

ONT10:59 pmOntario

Jan 21

ONT3:07 pmOntario

25h 11m

1 stop

LAX4:18 pmLos Angeles

$133

Find similar

Frontier

Jan 13

LAX2:58 pmLos Angeles

8h 01m

1 stop

ONT10:59 pmOntario

Jan 20

ONT7:15 amOntario

27h 39m

2 stops

LAX10:54 amLos Angeles

$156

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Tue 1/13

2:58 pm-10:59 pm

1 stop8h 01m

Ontario

Tue 1/20

7:15 am-11:31 pm

1 stop16h 16m

$131

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Thu 1/15

9:17 am-5:44 pm

1 stop8h 27m

Ontario

Thu 1/22

8:48 pm-9:27 am

1 stop12h 39m

$132

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Wed 1/14

9:17 am-5:54 pm

1 stop8h 37m

Ontario

Wed 1/21

7:15 am-11:31 pm

1 stop16h 16m

$133

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Thu 2/12

9:12 am-1:11 pm

1 stop3h 59m

Ontario

Mon 3/2

6:43 pm-8:15 am

1 stop13h 32m

$135

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/10

9:17 am-2:26 pm

1 stop5h 09m

Ontario

Mon 1/12

10:18 pm-8:22 am

1 stop10h 04m

$136

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Tue 1/6

3:25 pm-9:50 am

1 stop18h 25m

Ontario

Fri 1/16

10:18 pm-8:22 am

1 stop10h 04m

$146

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 1/16

9:17 am-5:44 pm

1 stop8h 27m

Ontario

Sat 1/17

9:10 pm-8:20 am

1 stop11h 10m

$150

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Tue 1/13

2:58 pm-10:59 pm

1 stop8h 01m

Ontario

Tue 1/20

7:15 am-10:54 am

2 stops27h 39m

$156

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 1/16

9:17 am-5:44 pm

1 stop8h 27m

Ontario

Fri 1/23

10:18 am-3:12 pm

1 stop4h 54m

$161

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Thu 2/5

9:17 am-7:53 pm

1 stop10h 36m

Ontario

Mon 2/9

8:05 pm-1:16 pm

2 stops17h 11m

$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	4h 17m
Direct flights	None

The fastest flight from Los Angeles to Ontario takes 4h 17m

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. 4h 17m 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 Las Vegasfrom $39

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Flights to Bostonfrom $49

Flights to Atlantafrom $46

Flights to Dallasfrom $51

Flights to Seattlefrom $58

Cheap flights from Los Angeles to Los Angeles from $67

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 1/15. 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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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 3 per week as of December 2025. The most frequent departure day is Mon, with 33% 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