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Cheap flights from Austin to Los Angeles from $52

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 2/24. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:22 pm - 12:20 am
AUS
-
ONT
5h 58m1 stop
Frontier Logo
6:20 am - 2:21 pm
ONT
-
AUS
6h 01m1 stop
$128Frontier
lun., ene. 26 - jue., ene. 29
Frontier Logo
8:22 pm - 11:24 pm
AUS
-
ONT
29h 02m1 stop
Frontier Logo
7:15 am - 11:11 pm
ONT
-
AUS
13h 56m1 stop
$129Frontier
vie., ene. 30 - sáb., feb. 7
Frontier Logo
1:03 pm - 5:44 pm
AUS
-
ONT
6h 41m1 stop
Frontier Logo
3:07 pm - 1:46 pm
ONT
-
AUS
20h 39m1 stop
$141Frontier
dom., ene. 18 - mié., ene. 21
Frontier Logo
9:39 pm - 12:10 pm
AUS
-
ONT
16h 31m1 stop
Frontier Logo
8:30 am - 12:14 am
ONT
-
AUS
13h 44m2 stops
$149Frontier
dom., feb. 8 - mié., feb. 11
Frontier Logo
4:16 pm - 9:17 pm
AUS
-
ONT
7h 01m1 stop
Frontier Logo
8:30 am - 3:21 pm
ONT
-
AUS
4h 51m1 stop
$155Frontier
sáb., feb. 14 - sáb., feb. 21
Frontier Logo
9:39 pm - 12:10 pm
AUS
-
ONT
16h 31m1 stop
Frontier Logo
6:00 am - 12:16 am
ONT
-
AUS
16h 16m1 stop
$156Frontier
dom., feb. 8 - sáb., feb. 14
Frontier Logo
7:22 pm - 11:21 pm
AUS
-
ONT
5h 59m1 stop
Frontier Logo
7:52 am - 3:48 pm
ONT
-
AUS
5h 56m1 stop
$164Frontier
sáb., ene. 3 - mar., ene. 6
Frontier Logo
8:12 pm - 3:07 pm
AUS
-
ONT
20h 55m1 stop
Frontier Logo
6:20 am - 12:16 am
ONT
-
AUS
15h 56m1 stop
$165Frontier
lun., ene. 19 - lun., ene. 26
Frontier Logo
10:32 am - 7:36 am
AUS
-
ONT
23h 04m2 stops
Frontier Logo
7:15 am - 11:28 pm
ONT
-
AUS
14h 13m1 stop
$171Frontier
mié., ene. 7 - mié., ene. 14
Frontier Logo
7:22 pm - 3:09 pm
AUS
-
ONT
21h 47m1 stop
Frontier Logo
6:00 am - 2:06 pm
ONT
-
AUS
6h 06m1 stop
$174Frontier
lun., ene. 5 - lun., ene. 12

Frontier flights from Austin to Ontario

Our best Frontier deals on Austin to Ontario flight tickets
Frontier
Jan 26
AUS8:22 pmAustin Bergstrom
5h 58m
1 stop
ONT12:20 amOntario
Jan 29
ONT6:20 amOntario
6h 01m
1 stop
AUS2:21 pmAustin Bergstrom
$128
Find similar
Frontier
Jan 30
AUS8:22 pmAustin Bergstrom
29h 02m
1 stop
ONT11:24 pmOntario
Feb 7
ONT7:15 amOntario
13h 56m
1 stop
AUS11:11 pmAustin Bergstrom
$129
Find similar
Frontier
Jan 18
AUS1:03 pmAustin Bergstrom
6h 41m
1 stop
ONT5:44 pmOntario
Jan 21
ONT3:07 pmOntario
20h 39m
1 stop
AUS1:46 pmAustin Bergstrom
$141
Find similar

United Airlines flights from Austin to Ontario

Our best United Airlines deals on Austin to Ontario flight tickets
United Airlines
Dec 13
AUS1:08 pmAustin Bergstrom
6h 29m
1 stop
ONT5:37 pmOntario
Dec 17
ONT1:43 pmOntario
8h 16m
1 stop
AUS11:59 pmAustin Bergstrom
$446
Find similar
United Airlines
Dec 13
AUS1:08 pmAustin Bergstrom
6h 29m
1 stop
ONT5:37 pmOntario
Dec 16
ONT6:00 amOntario
8h 47m
2 stops
AUS4:47 pmAustin Bergstrom
$452
Find similar
United Airlines
Dec 13
AUS9:11 amAustin Bergstrom
5h 21m
1 stop
ONT12:32 pmOntario
Dec 17
ONT6:00 amOntario
11h 52m
2 stops
AUS7:52 pmAustin Bergstrom
$465
Find similar

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 diciembre 11, 2025.
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

lun. 1/26

8:22 pm-12:20 am

1 stop5h 58m

Ontario

jue. 1/29

6:20 am-2:21 pm

1 stop6h 01m

$128

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

vie. 1/30

8:22 pm-11:24 pm

1 stop29h 02m

Ontario

sáb. 2/7

7:15 am-11:11 pm

1 stop13h 56m

$129

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

dom. 1/18

1:03 pm-5:44 pm

1 stop6h 41m

Ontario

mié. 1/21

3:07 pm-1:46 pm

1 stop20h 39m

$141

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

dom. 2/8

9:39 pm-12:10 pm

1 stop16h 31m

Ontario

mié. 2/11

8:30 am-12:14 am

2 stops13h 44m

$149

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

sáb. 2/14

4:16 pm-9:17 pm

1 stop7h 01m

Ontario

sáb. 2/21

8:30 am-3:21 pm

1 stop4h 51m

$155

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

dom. 2/8

9:39 pm-12:10 pm

1 stop16h 31m

Ontario

sáb. 2/14

6:00 am-12:16 am

1 stop16h 16m

$156

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

sáb. 1/3

7:22 pm-11:21 pm

1 stop5h 59m

Ontario

mar. 1/6

7:52 am-3:48 pm

1 stop5h 56m

$164

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

lun. 1/19

8:12 pm-3:07 pm

1 stop20h 55m

Ontario

lun. 1/26

6:20 am-12:16 am

1 stop15h 56m

$165

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

mié. 1/7

10:32 am-7:36 am

2 stops23h 04m

Ontario

mié. 1/14

7:15 am-11:28 pm

1 stop14h 13m

$171

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

lun. 1/5

7:22 pm-3:09 pm

1 stop21h 47m

Ontario

lun. 1/12

6:00 am-2:06 pm

1 stop6h 06m

$174

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 Tuesday 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 morning is the cheapest time of day to fly from Austin to Ontario when you can find flight prices for as low as $327. Flying to Ontario in the morning 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 $354 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 $287 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?

No. A direct flight is the cheapest option for a flight between Austin to Ontario.

How have Austin to Ontario flight prices changed over time?

As of December 2025, prices for Austin to Ontario flights are approximately 47% 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

2h 55m

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 $399.
The fastest flight from Austin to Ontario takes 2h 55m
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 2h 55m.

  • 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 $130Free CancellationRating
5.8
3,084 reviews
Search Frontier flights
American AirlinesPriceFrom $216Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
DeltaPriceFrom $217Free CancellationRating
7.9
8,008 reviews
Search Delta flights
SouthwestPriceFrom $246Free CancellationRating
7.9
4,252 reviews
Search Southwest flights

  • Southwest Flights From Austin to Ontario

    Across 8 Southwest flights from Austin to Ontario this week, the average price was $394, with the best Southwest deals starting from $246 round-trip. 4,252 users have rated Southwest on momondo, with an average score of 7.9/10.

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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