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Cheap flights from Austin to Los Angeles from $85

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 11/10. 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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0 bags

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Find the cheapest flights from Austin to Los Angeles

Cheap round-trip flights

Frontier Logo
3:15 pm - 9:52 pmAUS-ONT
8h 37m1 stop
Frontier Logo
7:00 am - 2:30 pmONT-AUS
5h 30m1 stop
$198Frontier
Find Deal
Sat, Aug 9 - Sat, Aug 16
Frontier Logo
7:44 am - 11:50 pmAUS-ONT
18h 06m1 stop
Frontier Logo
12:59 am - 11:16 pmONT-AUS
20h 17m1 stop
$199Frontier
Find Deal
Sat, Aug 23 - Fri, Aug 29
Frontier Logo
4:27 pm - 7:17 amAUS-ONT
16h 50m1 stop
Frontier Logo
8:59 pm - 11:32 pmONT-AUS
24h 33m1 stop
$200Frontier
Find Deal
Sat, Sep 6 - Sat, Sep 13
United Airlines Logo
1:39 pm - 8:33 pmAUS-ONT
8h 54m1 stop
United Airlines Logo
6:04 am - 3:23 pmONT-AUS
7h 19m1 stop
$232United Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2
American Airlines Logo
8:43 pm - 12:08 amAUS-ONT
5h 25m1 stop
American Airlines Logo
4:54 pm - 11:35 pmONT-AUS
4h 41m1 stop
$235American Airlines
Find Deal
Thu, Aug 21 - Mon, Aug 25
American Airlines Logo
6:00 am - 11:32 amAUS-ONT
7h 32m1 stop
American Airlines Logo
6:17 am - 1:20 pmONT-AUS
5h 03m1 stop
$237American Airlines
Find Deal
Wed, Aug 27 - Tue, Sep 2
Southwest Logo
4:10 pm - 5:20 pmAUS-ONT
3h 10mnonstop
Southwest Logo
9:55 am - 2:40 pmONT-AUS
2h 45mnonstop
$247Southwest
Find Deal
Tue, Dec 2 - Tue, Dec 16
Southwest Logo
10:55 am - 6:25 pmAUS-ONT
9h 30m1 stop
Southwest Logo
12:45 pm - 5:35 pmONT-AUS
2h 50mnonstop
$257Southwest
Find Deal
Wed, Aug 27 - Tue, Sep 2
Delta Logo
8:15 am - 12:14 pmAUS-ONT
5h 59m1 stop
Delta Logo
6:05 am - 1:04 pmONT-AUS
4h 59m1 stop
$287Delta
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Wed, Aug 20 - Wed, Aug 27
United Airlines Logo
1:39 pm - 8:33 pmAUS-ONT
8h 54mnonstop
United Airlines Logo
1:42 pm - 10:57 pmONT-AUS
7h 15m1 stop
$303United Airlines
Find Deal
Thu, Sep 4 - Tue, Sep 23

Frontier flights from Austin to Ontario

Our best Frontier deals on Austin to Ontario flight tickets
Frontier
Aug 9
AUS3:15 pmAustin Bergstrom
8h 37m
1 stop
ONT9:52 pmOntario
Aug 16
ONT7:00 amOntario
5h 30m
1 stop
AUS2:30 pmAustin Bergstrom
$198
Find similar
Frontier
Aug 23
AUS7:44 amAustin Bergstrom
18h 06m
1 stop
ONT11:50 pmOntario
Aug 29
ONT12:59 amOntario
20h 17m
1 stop
AUS11:16 pmAustin Bergstrom
$199
Find similar
Frontier
Sep 6
AUS4:27 pmAustin Bergstrom
16h 50m
1 stop
ONT7:17 amOntario
Sep 13
ONT8:59 pmOntario
24h 33m
1 stop
AUS11:32 pmAustin Bergstrom
$200
Find similar

Southwest flights from Austin to Ontario

Our best Southwest deals on Austin to Ontario flight tickets
Southwest
Dec 2
AUS4:10 pmAustin Bergstrom
3h 10m
ONT5:20 pmOntario
Dec 16
ONT9:55 amOntario
2h 45m
AUS2:40 pmAustin Bergstrom
$247
Find similar
Southwest
Aug 27
AUS10:55 amAustin Bergstrom
9h 30m
1 stop
ONT6:25 pmOntario
Sep 2
ONT12:45 pmOntario
2h 50m
AUS5:35 pmAustin Bergstrom
$257
Find similar
Southwest
Aug 27
AUS7:50 amAustin Bergstrom
6h 10m
1 stop
ONT12:00 pmOntario
Sep 2
ONT6:20 amOntario
7h 10m
2 stops
AUS3:30 pmAustin Bergstrom
$267
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 July 30, 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

Sat 8/9

3:15 pm-9:52 pm

1 stop8h 37m

Ontario

Sat 8/16

7:00 am-2:30 pm

1 stop5h 30m

$198

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Sat 8/23

7:44 am-11:50 pm

1 stop18h 06m

Ontario

Fri 8/29

12:59 am-11:16 pm

1 stop20h 17m

$199

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Sat 9/6

4:27 pm-7:17 am

1 stop16h 50m

Ontario

Sat 9/13

8:59 pm-11:32 pm

1 stop24h 33m

$200

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Tue 8/26

1:39 pm-8:33 pm

1 stop8h 54m

Ontario

Tue 9/2

6:04 am-3:23 pm

1 stop7h 19m

$232

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Thu 8/21

8:43 pm-12:08 am

1 stop5h 25m

Ontario

Mon 8/25

4:54 pm-11:35 pm

1 stop4h 41m

$235

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Wed 8/27

6:00 am-11:32 am

1 stop7h 32m

Ontario

Tue 9/2

6:17 am-1:20 pm

1 stop5h 03m

$237

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Tue 12/2

4:10 pm-5:20 pm

Nonstop3h 10m

Ontario

Tue 12/16

9:55 am-2:40 pm

Nonstop2h 45m

$247

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Wed 8/27

10:55 am-6:25 pm

1 stop9h 30m

Ontario

Tue 9/2

12:45 pm-5:35 pm

Nonstop2h 50m

$257

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Wed 8/20

8:15 am-12:14 pm

1 stop5h 59m

Ontario

Wed 8/27

6:05 am-1:04 pm

1 stop4h 59m

$287

AustinOntario

AUS - ONT

AUSONT

Austin Bergstrom

Thu 9/4

1:39 pm-8:33 pm

Nonstop8h 54m

Ontario

Tue 9/23

1:42 pm-10:57 pm

1 stop7h 15m

$303

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, September 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 $265. If you aren’t able to travel during the month of September, then book flights to Ontario from Austin during January instead. Flights to Ontario in January, while not as cheap as those in September, still average around $283.

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 $309. 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 $458.

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 $334 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 $238 on momondo.

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

There are 1 cabin classes 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 25% 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 July 2025, prices for Austin to Ontario flights are approximately 43% 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

$85

Fastest flight time

3h 00m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from Austin in the past 72 hours is $85. The best round-trip flight deal from Austin to Ontario found on momondo in the last 72 hours is $198.
The fastest flight from Austin to Ontario takes 3h 00m
Direct flights go from Austin to Ontario every day.
There is 1 airport near Ontario: 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 00m.

  • 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 $108Free CancellationRating
5.9
3,237 reviews
Search Frontier flights
American AirlinesPriceFrom $188Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $221Free CancellationRating
8.0
7,980 reviews
Search Delta flights
SouthwestPriceFrom $230Free CancellationRating
8.0
4,241 reviews
Search Southwest flights

  • Southwest Flights From Austin to Ontario

    Across 5 Southwest flights from Austin to Ontario this week, the average price was $387, with the best Southwest deals starting from $230 round-trip. 4,241 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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