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Cheap flights from Austin to Los Angeles from $59

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Austin to Los Angeles departing on 2/25. 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
0 bags

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Cheap round-trip flights

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Frontier Logo
8:30 am - 9:34 pm
AUS
-
ONT
15h 04m
1 stop
Frontier Logo
8:40 am - 11:13 pm
ONT
-
AUS
12h 33m
1 stop
$128Frontier
Wed, Feb 25 - Wed, Mar 4
Frontier Logo
9:59 pm - 1:26 pm
AUS
-
ONT
17h 27m
1 stop
Frontier Logo
7:17 pm - 2:59 pm
ONT
-
AUS
17h 42m
1 stop
$138Frontier
Thu, Feb 19 - Wed, Feb 25
Frontier Logo
8:30 am - 9:34 pm
AUS
-
ONT
15h 04m
1 stop
Frontier Logo
8:40 am - 9:21 am
ONT
-
AUS
22h 41m
1 stop
$139Frontier
Wed, Feb 25 - Wed, Mar 4
Frontier Logo
9:59 pm - 1:26 pm
AUS
-
ONT
17h 27m
1 stop
Frontier Logo
8:35 am - 11:13 pm
ONT
-
AUS
12h 38m
1 stop
$149Frontier
Thu, Feb 19 - Tue, Feb 24
Frontier Logo
8:30 am - 9:34 pm
AUS
-
ONT
15h 04m
1 stop
Frontier Logo
6:00 am - 9:21 am
ONT
-
AUS
25h 21m
1 stop
$154Frontier
Tue, Feb 17 - Sat, Feb 21
Multiple Airlines Logo
4:35 pm - 7:26 am
AUS
-
ONT
40h 51m
2 stops
Multiple Airlines Logo
8:40 am - 11:13 pm
ONT
-
AUS
12h 33m
1 stop
$160Multiple Airlines
Thu, Feb 19 - Wed, Feb 25
Frontier Logo
8:30 am - 9:34 pm
AUS
-
ONT
15h 04m
1 stop
Frontier Logo
8:35 am - 11:13 pm
ONT
-
AUS
12h 38m
1 stop
$161Frontier
Tue, Feb 17 - Tue, Feb 24
Frontier Logo
8:30 am - 9:34 am
AUS
-
ONT
27h 04m
1 stop
Frontier Logo
6:15 am - 12:16 am
ONT
-
AUS
16h 01m
1 stop
$163Frontier
Wed, Mar 4 - Sat, Mar 7
Frontier Logo
8:30 am - 9:34 pm
AUS
-
ONT
15h 04m
1 stop
Frontier Logo
7:17 pm - 11:29 am
ONT
-
AUS
14h 12m
1 stop
$165Frontier
Tue, Feb 17 - Wed, Feb 18
Frontier Logo
8:30 am - 9:34 pm
AUS
-
ONT
15h 04m
1 stop
Frontier Logo
2:08 pm - 12:16 am
ONT
-
AUS
8h 08m
1 stop
$171Frontier
Tue, Feb 17 - Thu, Feb 19

Frontier flights from Austin to Ontario

Our best Frontier deals on Austin to Ontario flight tickets
Frontier
Feb 25
AUS8:30 amAustin Bergstrom
15h 04m
1 stop
ONT9:34 pmOntario
Feb 28
ONT2:06 pmOntario
19h 37m
1 stop
AUS11:43 amAustin Bergstrom
$128
Frontier
Feb 19
AUS9:59 pmAustin Bergstrom
11h 23m
1 stop
ONT7:22 amOntario
Feb 25
ONT8:40 amOntario
12h 33m
1 stop
AUS11:13 pmAustin Bergstrom
$138
Frontier
Feb 24
AUS8:30 amAustin Bergstrom
15h 04m
1 stop
ONT9:34 pmOntario
Mar 3
ONT8:40 amOntario
12h 33m
1 stop
AUS11:13 pmAustin Bergstrom
$139

momondo Fare Finder

 
Customize your flight search to find flights from Austin to Ontario 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 January 27, 2026.
Use the filters below to find and compare flights from Austin to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Wed 2/25

8:30 am-9:34 pm

1 stop15h 04m

Ontario

Wed 3/4

8:40 am-11:13 pm

1 stop12h 33m

$128

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Thu 2/19

9:59 pm-1:26 pm

1 stop17h 27m

Ontario

Wed 2/25

7:17 pm-2:59 pm

1 stop17h 42m

$138

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Wed 2/25

8:30 am-9:34 pm

1 stop15h 04m

Ontario

Wed 3/4

8:40 am-9:21 am

1 stop22h 41m

$139

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Thu 2/19

9:59 pm-1:26 pm

1 stop17h 27m

Ontario

Tue 2/24

8:35 am-11:13 pm

1 stop12h 38m

$149

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Tue 2/17

8:30 am-9:34 pm

1 stop15h 04m

Ontario

Sat 2/21

6:00 am-9:21 am

1 stop25h 21m

$154

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Thu 2/19

4:35 pm-7:26 am

2 stops40h 51m

Ontario

Wed 2/25

8:40 am-11:13 pm

1 stop12h 33m

$160

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Tue 2/17

8:30 am-9:34 pm

1 stop15h 04m

Ontario

Tue 2/24

8:35 am-11:13 pm

1 stop12h 38m

$161

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Wed 3/4

8:30 am-9:34 am

1 stop27h 04m

Ontario

Sat 3/7

6:15 am-12:16 am

1 stop16h 01m

$163

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Tue 2/17

8:30 am-9:34 pm

1 stop15h 04m

Ontario

Wed 2/18

7:17 pm-11:29 am

1 stop14h 12m

$165

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Tue 2/17

8:30 am-9:34 pm

1 stop15h 04m

Ontario

Thu 2/19

2:08 pm-12:16 am

1 stop8h 08m

$171

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Austin 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

What is the cheapest month to fly to Ontario?

In general, August is the cheapest month to fly from Austin to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $285. If you aren’t able to travel during the month of August, then book flights to Ontario from Austin during July instead. Flights to Ontario in July, while not as cheap as those in August, still average around $299.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Saturday when prices can be found for as low as $342. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Austin to Ontario for around $550.

What is the cheapest time of day to depart on your flight to Ontario?

In the evening is the cheapest time of day to fly from Austin to Ontario when you can find flight prices for as low as $347. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $411 on average. Flights to Ontario from Austin at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Austin Bergstrom to Ontario flight route?

Fly from Austin Bergstrom to Ontario for the best Austin Bergstrom - Ontario flight prices

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from Austin when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $352 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Austin for as low as $293 on momondo.

What cabin class options are available on Austin Bergstrom to Ontario flights?

There is only 1 cabin class available to choose from on Austin Bergstrom to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Austin to Ontario flights?

You could potentially save up to 42% on your flight if you consider stops on a Austin to Ontario flight.

How have Austin to Ontario flight prices changed over time?

As of January 2026, prices for Austin to Ontario flights are approximately 19% more expensive when compared to flights at the same time last year.

When to book flights from Austin to Ontario

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

Cheap Austin to Ontario (AUS to ONT) flight deals and tips

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

Best Price Found

$233

Fastest flight time

3h 05m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from Austin in the past 72 hours is $233. The best round-trip flight deal from Austin to Ontario found on momondo in the last 72 hours is $336.
The fastest flight from Austin to Ontario takes 3h 05m
Direct flights go from Austin to Ontario every day.
There is 1 airport in Ontario. From Austin there are direct flights to Ontario (ONT).
Search flight deals

  • How far is Austin Bergstrom to Ontario by plane?

    There are 1190.2 mi between Austin Bergstrom and Ontario. A reasonable flight in good conditions will take 3h 05m.

  • When did momondo last update prices for flights from Austin Bergstrom Airport to Ontario Airport?

    Prices for flights from Austin Bergstrom Airport to Ontario Airport are updated daily.

  • How many operators does momondo search for flights from Austin Bergstrom Airport to Ontario Airport?

  • How old do you have to be to fly from Austin Bergstrom Airport to Ontario Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Austin Bergstrom Airport to Ontario Airport.

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

    The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Austin to Ontario?

  • What is the most popular airline from Austin to Ontario?

Best airlines flying from Austin to Ontario

Compare and see reviews for airlines that fly from Austin to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $144Free CancellationRating
5.7
3,056 reviews
Search Frontier flights
DeltaPriceFrom $177Free CancellationRating
7.9
8,118 reviews
Search Delta flights
American AirlinesPriceFrom $230Free CancellationRating
7.2
11,198 reviews
Search American Airlines flights
SouthwestPriceFrom $247Free CancellationRating
8.0
4,268 reviews
Search Southwest flights

  • Southwest Flights From Austin to Ontario

    Across 5 Southwest flights from Austin to Ontario this week, the average price was $392, with the best Southwest deals starting from $247 round-trip. 4,268 users have rated Southwest on momondo, with an average score of 8.0/10.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Austin to Ontario. momondo saves you time and could save you money on your trip.

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

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

How can momondo help me find flights from Austin to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Austin.

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

Of course. momondo tracks the price of Austin to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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