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. Saturday 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 30% 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 85 minutes.

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

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

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.

$51 Cheap Flights from Los Angeles to Ontario in 2026

Find the cheapest flights from Los Angeles to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:44 am - 7:36 pmLAX Los Angeles-ONT Ontario

10h 52m1 stop San Francisco

12:07 pm - 10:22 pmONT Ontario-LAX Los Angeles

10h 15m1 stop San Francisco

$100Frontier

Thu, Sep 10 - Mon, Sep 14

8:44 am - 7:36 pmLAX Los Angeles-ONT Ontario

10h 52m1 stop San Francisco

11:45 am - 2:39 pmONT Ontario-LAX Los Angeles

26h 54m1 stop Denver Intl

$106Frontier

Thu, Sep 10 - Mon, Sep 14

8:44 am - 7:36 pmLAX Los Angeles-ONT Ontario

10h 52m1 stop San Francisco

6:15 am - 2:39 pmONT Ontario-LAX Los Angeles

8h 24m1 stop Denver Intl

$110Frontier

Thu, Sep 10 - Mon, Sep 14

8:44 am - 7:36 pmLAX Los Angeles-ONT Ontario

10h 52m1 stop San Francisco

11:45 am - 12:10 amONT Ontario-LAX Los Angeles

12h 25m1 stop Denver Intl

$111Frontier

Thu, Sep 10 - Wed, Sep 16

2:01 pm - 11:50 pmLAX Los Angeles-ONT Ontario

9h 49m1 stop Denver Intl

6:15 am - 1:44 pmONT Ontario-LAX Los Angeles

7h 29m1 stop Denver Intl

$115Frontier

Sat, Oct 24 - Wed, Nov 4

6:30 am - 10:30 amLAX Los Angeles-ONT Ontario

28h 00m1 stop Denver Intl

11:45 am - 12:10 amONT Ontario-LAX Los Angeles

12h 25m1 stop Denver Intl

$116Frontier

Tue, Sep 8 - Wed, Sep 16

8:44 am - 7:36 pmLAX Los Angeles-ONT Ontario

10h 52m1 stop San Francisco

11:45 am - 12:10 amONT Ontario-LAX Los Angeles

12h 25m1 stop Denver Intl

$122Frontier

Thu, Sep 17 - Thu, Sep 24

8:44 am - 7:36 pmLAX Los Angeles-ONT Ontario

10h 52m1 stop San Francisco

6:15 am - 2:39 pmONT Ontario-LAX Los Angeles

8h 24m1 stop Denver Intl

$123Frontier

Fri, Sep 11 - Tue, Sep 15

8:44 am - 7:36 pmLAX Los Angeles-ONT Ontario

10h 52m1 stop San Francisco

10:04 am - 8:14 pmONT Ontario-LAX Los Angeles

10h 10m1 stop Las Vegas Harry Reid Intl

$129Frontier

Thu, Sep 17 - Sat, Sep 19

6:05 am - 11:47 pmLAX Los Angeles-ONT Ontario

17h 42m1 stop Denver Intl

6:15 am - 2:39 pmONT Ontario-LAX Los Angeles

8h 24m1 stop Denver Intl

$136Frontier

Tue, Sep 15 - Tue, Sep 22

Cheap last minute flights

Enter your travel dates to find the best prices.

6:55 am - 4:22 pmLAX Los Angeles-ONT Ontario

9h 27m1 stop Las Vegas Harry Reid Intl

7:56 pm - 12:04 amONT Ontario-LAX Los Angeles

28h 08m2 stops Denver Intl Chicago O'Hare Intl

$477Frontier

Sun, Aug 23 - Tue, Aug 25

7:07 pm - 10:29 amLAX Los Angeles-ONT Ontario

15h 22m1 stop San Francisco

3:40 pm - 9:29 amONT Ontario-LAX Los Angeles

17h 49m1 stop Las Vegas Harry Reid Intl

$486Frontier

Wed, Aug 26 - Sun, Aug 30

7:07 pm - 10:29 amLAX Los Angeles-ONT Ontario

15h 22m1 stop San Francisco

10:49 am - 12:04 amONT Ontario-LAX Los Angeles

37h 15m2 stops Denver Intl Chicago O'Hare Intl

$511Frontier

Sat, Aug 22 - Mon, Aug 24

9:39 am - 11:50 pmLAX Los Angeles-ONT Ontario

14h 11m2 stops Dallas/Fort Worth Denver Intl

4:49 pm - 1:34 pmONT Ontario-LAX Los Angeles

20h 45m1 stop Seattle/Tacoma Intl

$523Frontier

Sat, Aug 22 - Tue, Aug 25

3:04 pm - 2:45 pmLAX Los Angeles-ONT Ontario

23h 41m1 stop Seattle/Tacoma Intl

3:13 pm - 12:11 amONT Ontario-LAX Los Angeles

8h 58m2 stops San Francisco Denver Intl

$526Frontier

Mon, Aug 24 - Wed, Aug 26

6:55 am - 3:54 pmLAX Los Angeles-ONT Ontario

8h 59m1 stop Las Vegas Harry Reid Intl

9:33 am - 12:04 amONT Ontario-LAX Los Angeles

38h 31m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$537Frontier

Sat, Aug 22 - Mon, Aug 31

6:30 am - 3:54 pmLAX Los Angeles-ONT Ontario

9h 24m2 stops Denver Intl Las Vegas Harry Reid Intl

3:40 pm - 9:29 amONT Ontario-LAX Los Angeles

17h 49m1 stop Las Vegas Harry Reid Intl

$538Frontier

Wed, Aug 26 - Sun, Aug 30

7:07 pm - 10:29 amLAX Los Angeles-ONT Ontario

15h 22m1 stop San Francisco

4:49 pm - 1:34 pmONT Ontario-LAX Los Angeles

20h 45m1 stop Seattle/Tacoma Intl

$555Frontier

Sat, Aug 22 - Tue, Aug 25

6:55 am - 4:22 pmLAX Los Angeles-ONT Ontario

9h 27m1 stop Las Vegas Harry Reid Intl

3:13 pm - 9:54 pmONT Ontario-LAX Los Angeles

6h 41m1 stop San Francisco

$558Frontier

Sun, Aug 23 - Tue, Aug 25

4:15 pm - 8:03 amLAX Los Angeles-ONT Ontario

15h 48m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

4:49 pm - 1:34 pmONT Ontario-LAX Los Angeles

20h 45m1 stop Seattle/Tacoma Intl

$574Frontier

Sun, Aug 23 - Tue, Aug 25

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Frontier flights from Los Angeles to Ontario

Our best Frontier deals on Los Angeles to Ontario flight tickets

Frontier

Sep 10

LAX8:44 amLos Angeles

10h 52m

1 stop

ONT7:36 pmOntario

Sep 14

ONT12:07 pmOntario

10h 15m

1 stop

LAX10:22 pmLos Angeles

$100

Frontier

Sep 10

LAX8:44 amLos Angeles

10h 52m

1 stop

ONT7:36 pmOntario

Sep 14

ONT11:45 amOntario

26h 54m

1 stop

LAX2:39 pmLos Angeles

$106

Frontier

Sep 10

LAX8:44 amLos Angeles

10h 52m

1 stop

ONT7:36 pmOntario

Sep 14

ONT6:15 amOntario

8h 24m

1 stop

LAX2:39 pmLos Angeles

$110

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesOntario

LAX Los Angeles - ONT Ontario

LAXONT

Los Angeles

Thu 9/10

8:44 am-7:36 pm

1 stop10h 52m

Ontario

Mon 9/14

12:07 pm-10:22 pm

1 stop10h 15m

$100

Los AngelesOntario

LAX Los Angeles - ONT Ontario

LAXONT

Los Angeles

Thu 9/10

8:44 am-7:36 pm

1 stop10h 52m

Ontario

Mon 9/14

11:45 am-2:39 pm

1 stop26h 54m

$106

Los AngelesOntario

LAX Los Angeles - ONT Ontario

LAXONT

Los Angeles

Thu 9/10

8:44 am-7:36 pm

1 stop10h 52m

Ontario

Mon 9/14

6:15 am-2:39 pm

1 stop8h 24m

$110

Los AngelesOntario

LAX Los Angeles - ONT Ontario

LAXONT

Los Angeles

Thu 9/10

8:44 am-7:36 pm

1 stop10h 52m

Ontario

Wed 9/16

11:45 am-12:10 am

1 stop12h 25m

$111

Quickest round-trip

Los AngelesOntario

LAX Los Angeles - ONT Ontario

LAXONT

Los Angeles

Sat 10/24

2:01 pm-11:50 pm

1 stop9h 49m

Ontario

Wed 11/4

6:15 am-1:44 pm

1 stop7h 29m

$115

Los AngelesOntario

LAX Los Angeles - ONT Ontario

LAXONT

Los Angeles

Tue 9/8

6:30 am-10:30 am

1 stop28h 00m

Ontario

Wed 9/16

11:45 am-12:10 am

1 stop12h 25m

$116

Los AngelesOntario

LAX Los Angeles - ONT Ontario

LAXONT

Los Angeles

Thu 9/17

8:44 am-7:36 pm

1 stop10h 52m

Ontario

Thu 9/24

11:45 am-12:10 am

1 stop12h 25m

$122

Los AngelesOntario

LAX Los Angeles - ONT Ontario

LAXONT

Los Angeles

Fri 9/11

8:44 am-7:36 pm

1 stop10h 52m

Ontario

Tue 9/15

6:15 am-2:39 pm

1 stop8h 24m

$123

Los AngelesOntario

LAX Los Angeles - ONT Ontario

LAXONT

Los Angeles

Thu 9/17

8:44 am-7:36 pm

1 stop10h 52m

Ontario

Sat 9/19

10:04 am-8:14 pm

1 stop10h 10m

$129

Los AngelesOntario

LAX Los Angeles - ONT Ontario

LAXONT

Los Angeles

Tue 9/15

6:05 am-11:47 pm

1 stop17h 42m

Ontario

Tue 9/22

6:15 am-2:39 pm

1 stop8h 24m

$136

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Best Price Found	$51
Fastest flight time	4h 48m
Direct flights	None

The best one-way flight to Ontario from Los Angeles in the past 72 hours is $51. The best round-trip flight deal from Los Angeles to Ontario found on momondo in the last 72 hours is $100.

The fastest flight from Los Angeles to Ontario takes 4h 48m

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

Search flight deals

Frequently asked questions about flying from Los Angeles to Ontario

How far is Los Angeles to Ontario by plane?
The distance between Los Angeles and Ontario is about 38.0 mi. 4h 48m 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Sun 9/20

Sun 9/27

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Cabin classes

Other United States destinations

Other flights from Los Angeles

Complete your trip

Feeling lucky

Cheap flights from Los Angeles to Los Angeles from $51

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 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Los Angeles to Los Angeles

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Frontier flights from Los Angeles to Ontario

Our best Frontier deals on Los Angeles to Ontario flight tickets

momondo Fare Finder

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?

How often are flights from Los Angeles to Ontario delayed?

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

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

When to book flights from Los Angeles to Ontario

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Los Angeles to Ontario

Why use momondo?

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

Cabin classes currently available on flights to Los Angeles

List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Los Angeles

According to popular flight searches on momondo this year

Complete your trip to Los Angeles

Explore popular destinations other users love

According to popular flight searches on momondo this year