How many flights depart from Ontario to Austin on average per day?

The number of flights available between Ontario and Austin is 1 per day as of September 2025. The most frequent departure time is 11:00AM, with 50% of daily flights leaving at noon.

Which layover airport has the shortest connection time from Ontario to Austin?

Phoenix (PHX) has the shortest average layover time for this route: 1h 07m.

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

8 flights are operational weekly from Ontario to Austin as of September 2025. The most popular departure day for this route is Mon, with 25% of flights per week taking off on this day.

Which layover airport offers the lowest fares from Ontario to Austin?

Flights via Denver (DEN) offer the lowest average round-trip price of $193.

What is the cheapest airline that flies from Ontario to Austin Bergstrom?

United Airlines, American Airlines, and Frontier are the most popular carriers operating from Ontario to Austin Bergstrom

What airlines fly to Austin?

American Airlines, Southwest and Delta are the top three most popular airlines that fly to Austin from Ontario according to our data. American Airlines is the first choice among our users, with 29% of people opting to fly with this airline when traveling to Austin. Keep in mind that there are 7 different airlines that fly to Austin on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Ontario and Austin?

Phoenix (PHX) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Ontario to Austin?

Flights connecting via Phoenix (PHX) have the shortest average one-way travel time: 4h 40m.

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

Prices for flights from Ontario Airport to Austin Bergstrom Airport are refreshed on a daily basis.

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

As of September 2025, there are 4 operators available to choose from for flights from Ontario Airport to Austin Bergstrom Airport.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Austin Bergstrom Airport.

What documentation or ID do you need to fly to Austin Bergstrom Airport?

The required travel and health documents for your Austin Bergstrom Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Austin Bergstrom Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$71 Cheap Flights from Ontario to Austin in 2025/26

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Find the cheapest flights from Ontario to Austin

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:59 pm - 11:32 pmONT-AUS

24h 33m1 stop

6:00 am - 11:50 pmAUS-ONT

19h 50m1 stop

$210Frontier

Find Deal

Sun, Sep 28 - Wed, Oct 8

10:30 am - 12:33 amONT-AUS

12h 03m1 stop

6:00 am - 9:35 amAUS-ONT

5h 35m1 stop

$211Frontier

Find Deal

Thu, Oct 16 - Sun, Oct 19

6:00 am - 3:22 pmONT-AUS

7h 22m1 stop

6:00 am - 12:17 pmAUS-ONT

8h 17m1 stop

$231United Airlines

Find Deal

Sat, Dec 6 - Tue, Dec 9

6:38 pm - 4:54 amONT-AUS

8h 16m1 stop

12:49 pm - 10:31 pmAUS-ONT

11h 42m2 stops

$232United Airlines

Find Deal

Thu, Oct 30 - Sat, Nov 1

4:35 pm - 12:23 amONT-AUS

5h 48m1 stop

8:10 am - 12:16 pmAUS-ONT

6h 06m1 stop

$237Delta

Find Deal

Thu, Oct 23 - Tue, Oct 28

7:00 am - 4:47 pmONT-AUS

7h 47m1 stop

6:00 am - 11:53 amAUS-ONT

7h 53m1 stop

$239American Airlines

Find Deal

Fri, Dec 5 - Tue, Dec 9

12:55 pm - 7:37 pmONT-AUS

4h 42m1 stop

6:59 pm - 10:28 pmAUS-ONT

5h 29m1 stop

$240American Airlines

Find Deal

Fri, Dec 5 - Tue, Dec 9

6:00 am - 2:55 pmONT-AUS

6h 55m2 stops

5:15 pm - 10:05 pmAUS-ONT

6h 50m2 stops

$247Southwest

Find Deal

Tue, Oct 7 - Tue, Oct 14

1:20 pm - 8:58 pmONT-AUS

5h 38m1 stop

5:59 pm - 9:56 pmAUS-ONT

5h 57m1 stop

$254Delta

Find Deal

Fri, Dec 5 - Sat, Dec 6

10:10 am - 3:00 pmONT-AUS

2h 50mnonstop

5:55 am - 9:25 amAUS-ONT

5h 30m1 stop

$277Southwest

Find Deal

Tue, Oct 7 - Tue, Oct 14

Frontier flights from Ontario to Austin

Our best Frontier deals on Ontario to Austin flight tickets

Frontier

Sep 28

ONT8:59 pmOntario

24h 33m

1 stop

AUS11:32 pmAustin Bergstrom

Oct 8

AUS6:00 amAustin Bergstrom

19h 50m

1 stop

ONT11:50 pmOntario

$210

Find similar

Frontier

Oct 16

ONT10:30 amOntario

12h 03m

1 stop

AUS12:33 amAustin Bergstrom

Oct 19

AUS6:00 amAustin Bergstrom

5h 35m

1 stop

ONT9:35 amOntario

$211

Find similar

Frontier

Sep 20

ONT1:37 pmOntario

20h 07m

2 stops

AUS11:44 amAustin Bergstrom

Sep 22

AUS10:54 pmAustin Bergstrom

25h 02m

1 stop

ONT9:56 pmOntario

$212

Find similar

United Airlines flights from Ontario to Austin

Our best United Airlines deals on Ontario to Austin flight tickets

United Airlines

Dec 6

ONT6:00 amOntario

7h 22m

1 stop

AUS3:22 pmAustin Bergstrom

Dec 9

AUS6:00 amAustin Bergstrom

8h 17m

1 stop

ONT12:17 pmOntario

$231

Find similar

United Airlines

Oct 30

ONT6:38 pmOntario

8h 16m

1 stop

AUS4:54 amAustin Bergstrom

Nov 1

AUS12:49 pmAustin Bergstrom

11h 42m

2 stops

ONT10:31 pmOntario

$232

Find similar

United Airlines

Oct 14

ONT6:00 amOntario

7h 20m

1 stop

AUS3:20 pmAustin Bergstrom

Oct 17

AUS5:37 pmAustin Bergstrom

26h 03m

3 stops

ONT5:40 pmOntario

$313

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Sun 9/28

8:59 pm-11:32 pm

1 stop24h 33m

Austin Bergstrom

Wed 10/8

6:00 am-11:50 pm

1 stop19h 50m

$210

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Thu 10/16

10:30 am-12:33 am

1 stop12h 03m

Austin Bergstrom

Sun 10/19

6:00 am-9:35 am

1 stop5h 35m

$211

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Sat 12/6

6:00 am-3:22 pm

1 stop7h 22m

Austin Bergstrom

Tue 12/9

6:00 am-12:17 pm

1 stop8h 17m

$231

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Thu 10/30

6:38 pm-4:54 am

1 stop8h 16m

Austin Bergstrom

Sat 11/1

12:49 pm-10:31 pm

2 stops11h 42m

$232

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Thu 10/23

4:35 pm-12:23 am

1 stop5h 48m

Austin Bergstrom

Tue 10/28

8:10 am-12:16 pm

1 stop6h 06m

$237

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Fri 12/5

7:00 am-4:47 pm

1 stop7h 47m

Austin Bergstrom

Tue 12/9

6:00 am-11:53 am

1 stop7h 53m

$239

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Fri 12/5

12:55 pm-7:37 pm

1 stop4h 42m

Austin Bergstrom

Tue 12/9

6:59 pm-10:28 pm

1 stop5h 29m

$240

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Tue 10/7

6:00 am-2:55 pm

2 stops6h 55m

Austin Bergstrom

Tue 10/14

5:15 pm-10:05 pm

2 stops6h 50m

$247

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Fri 12/5

1:20 pm-8:58 pm

1 stop5h 38m

Austin Bergstrom

Sat 12/6

5:59 pm-9:56 pm

1 stop5h 57m

$254

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Tue 10/7

10:10 am-3:00 pm

Nonstop2h 50m

Austin Bergstrom

Tue 10/14

5:55 am-9:25 am

1 stop5h 30m

$277

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How to get the cheapest flight ticket from Ontario to Austin

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

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to Austin?

The cheapest month to fly to Austin from Ontario is in April. Flight prices, which tend to average around $259, are often lower during this time because this is during the off-season. If you’re not able to fly to Austin in April, then September is your next best option. Flight prices from Ontario to Austin during September average around $277.

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

The cheapest day to depart on your flight to Austin is on a Saturday 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 Ontario to Austin for around $386.

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

In the afternoon is the cheapest time of day to fly from Ontario to Austin when you can find flight prices for as low as $331. Flying to Austin in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Austin are more costly at noon, with an average ticket price of $357. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Ontario to Austin Bergstrom flight route?

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

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

You are more likely to see cheaper flights to Austin from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Austin for around $319 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Austin from Ontario for as low as $266 on momondo.

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

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

How have Ontario to Austin flight prices changed over time?

As of September 2025, prices for Ontario to Austin flights are approximately 14% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Austin

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

Estimated round-trip price

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

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

Best Price Found	$140
Fastest flight time	2h 40m
Direct flights	Every day
Airports in Austin	1 airport

The best one-way flight to Austin from Ontario in the past 72 hours is $140. The best round-trip flight deal from Ontario to Austin found on momondo in the last 72 hours is $301.

The fastest flight from Ontario to Austin takes 2h 40m

Direct flights go from Ontario to Austin every day.

There is 1 airport near Austin: Austin Bergstrom (AUS)

Search flight deals

How far is Ontario to Austin Bergstrom by plane?
Ontario and Austin Bergstrom are 1190.2 mi apart from one another. Typically, this will take 2h 50m by plane in normal conditions.
When did momondo last update prices for flights from Ontario Airport to Austin Bergstrom Airport?
Prices for flights from Ontario Airport to Austin Bergstrom Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Austin Bergstrom Airport?
As of September 2025, there are 4 operators available to choose from for flights from Ontario Airport to Austin Bergstrom Airport.
How old do you have to be to fly from Ontario Airport to Austin Bergstrom Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Austin Bergstrom Airport.
What documentation or ID do you need to fly to Austin Bergstrom Airport?
The required travel and health documents for your Austin Bergstrom Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Austin Bergstrom Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Ontario to Austin?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ontario to Austin is Boeing 737-800 Passenger/BBJ2 (winglets) (17.79% of total bookings). The next most popular plane models are Boeing 737-700 Passenger/BBJ1 (winglets) (15.34%), Boeing 737 MAX 9 (9.82%), and Boeing 737 MAX 8 (9.20%).
What is the most popular airline from Ontario to Austin?
momondo data reveals that the most frequently booked airline on the route from Ontario to Austin is Southwest, representing 58% of all bookings. The subsequent popular airlines are Frontier at 22%, American Airlines at 19%, and Delta at 2%.

Best airlines flying from Ontario to Austin

Compare and see reviews for airlines that fly from Ontario to Austin with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $120	Free Cancellation	Rating 7.9 7,954 reviews	Search Delta flights
Frontier	PriceFrom $130	Free Cancellation	Rating 5.8 3,172 reviews	Search Frontier flights
American Airlines	PriceFrom $226	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $231	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights

Southwest Flights From Ontario to Austin
Southwest is one of the most popular airlines flying from Ontario to Austin, operating 4 flights/week on average for this route. A good Southwest flight deal for Ontario to Austin starts from $231 round-trip, up to an average price of $350. Our users have rated Southwest at 8.0/10.

Fredericksburg

San Marcos

Wimberley

Round Rock

Georgetown

Canyon Lake

Marble Falls

Cedar Park

Horseshoe Bay

Dripping Springs

Pflugerville

Seguin

Kyle

Bastrop

Buda

Flatonia

Why use momondo?

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

It is quick and easy to find Ontario to Austin flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Austin that suits you.

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

Flights from Ontario to Austin with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Ontario to Austin flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Ontario to Austin flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Ontario to Austin from $71

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Austin departing on 10/29. 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 Ontario to Austin

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 Austin?

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

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

What is the cheapest Ontario to Austin Bergstrom flight route?

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

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

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

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

How have Ontario to Austin flight prices changed over time?

As of September 2025, prices for Ontario to Austin flights are approximately 14% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Ontario to Austin Bergstrom?

United Airlines, American Airlines, and Frontier are the most popular carriers operating from Ontario to Austin Bergstrom

What airlines fly to Austin?

Which airport is the most popular layover for flights between Ontario and Austin?

Phoenix (PHX) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Ontario to Austin?

Flights via Denver (DEN) offer the lowest average round-trip price of $193.

Which layover airport has the shortest travel time from Ontario to Austin?

Flights connecting via Phoenix (PHX) have the shortest average one-way travel time: 4h 40m.

Which layover airport has the shortest connection time from Ontario to Austin?

Phoenix (PHX) has the shortest average layover time for this route: 1h 07m.

How many flights depart from Ontario to Austin on average per day?

The number of flights available between Ontario and Austin is 1 per day as of September 2025. The most frequent departure time is 11:00AM, with 50% of daily flights leaving at noon.

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

8 flights are operational weekly from Ontario to Austin as of September 2025. The most popular departure day for this route is Mon, with 25% of flights per week taking off on this day.

When to book flights from Ontario to Austin

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in Austin

How far is Ontario to Austin Bergstrom by plane?

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

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

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

What documentation or ID do you need to fly to Austin Bergstrom Airport?

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

What is the most popular airline from Ontario to Austin?

Best airlines flying from Ontario to Austin

Compare and see reviews for airlines that fly from Ontario to Austin with momondo

Southwest Flights From Ontario to Austin

Traveling to a place near Austin?

Why use momondo?

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

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

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

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

An easier way to manage your Austin 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 Texas