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 10m.

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

Frontier is the most popular carrier operating from Ontario to Austin Bergstrom

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 connection time from Ontario to Austin?

Phoenix (PHX) has the shortest average layover time for this route: 0h 50m.

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 28% 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.

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

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

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

Las Vegas (LAS) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

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 December 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.

$51 Cheap Flights from Ontario to Austin in 2025/26

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Find the cheapest flights from Ontario to Austin

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7:15 am - 10:31 pm

ONT

AUS

13h 16m1 stop

9:39 pm - 12:10 pm

AUS

ONT

16h 31m1 stop

$116Frontier

Wed, Jan 28 - Sun, Feb 1

3:07 pm - 1:46 pm

ONT

AUS

20h 39m1 stop

10:40 am - 11:24 pm

AUS

ONT

14h 44m1 stop

$118Frontier

Wed, Jan 21 - Sat, Jan 24

6:20 am - 2:21 pm

ONT

AUS

6h 01m1 stop

3:33 pm - 7:10 pm

AUS

ONT

5h 37m1 stop

$128Frontier

Thu, Jan 29 - Mon, Feb 2

6:30 am - 11:45 am

ONT

AUS

27h 15m1 stop

12:40 pm - 9:17 pm

AUS

ONT

10h 37m1 stop

$129Frontier

Thu, Feb 26 - Sun, Mar 1

10:18 pm - 5:11 pm

ONT

AUS

16h 53m1 stop

1:03 pm - 5:44 pm

AUS

ONT

6h 41m1 stop

$144Frontier

Thu, Jan 15 - Sun, Jan 18

7:15 am - 9:42 pm

ONT

AUS

12h 27m1 stop

6:45 am - 11:59 pm

AUS

ONT

19h 14m1 stop

$149Frontier

Tue, Jan 13 - Thu, Jan 15

4:04 pm - 10:56 pm

ONT

AUS

28h 52m2 stops

10:55 am - 10:59 pm

AUS

ONT

14h 04m1 stop

$151Frontier

Tue, Jan 6 - Tue, Jan 13

6:30 am - 6:27 pm

ONT

AUS

9h 57m2 stops

6:45 am - 10:39 pm

AUS

ONT

17h 54m1 stop

$152Frontier

Mon, Mar 2 - Wed, Mar 4

6:20 am - 2:21 pm

ONT

AUS

6h 01m1 stop

4:16 pm - 9:17 pm

AUS

ONT

7h 01m1 stop

$155Frontier

Thu, Jan 22 - Sat, Feb 14

7:15 am - 10:40 pm

ONT

AUS

13h 25m1 stop

3:16 pm - 12:20 am

AUS

ONT

11h 04m1 stop

$156Frontier

Tue, Jan 20 - Thu, Jan 22

Frontier flights from Ontario to Austin

Our best Frontier deals on Ontario to Austin flight tickets

Frontier

Jan 28

ONT7:15 amOntario

13h 16m

1 stop

AUS10:31 pmAustin Bergstrom

Feb 1

AUS9:39 pmAustin Bergstrom

16h 31m

1 stop

ONT12:10 pmOntario

$116

Find similar

Frontier

Jan 21

ONT3:07 pmOntario

20h 39m

1 stop

AUS1:46 pmAustin Bergstrom

Jan 24

AUS10:40 amAustin Bergstrom

14h 44m

1 stop

ONT11:24 pmOntario

$118

Find similar

Frontier

Jan 29

ONT6:20 amOntario

6h 01m

1 stop

AUS2:21 pmAustin Bergstrom

Feb 2

AUS3:33 pmAustin Bergstrom

5h 37m

1 stop

ONT7:10 pmOntario

$128

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Wed 1/28

7:15 am-10:31 pm

1 stop13h 16m

Austin Bergstrom

Sun 2/1

9:39 pm-12:10 pm

1 stop16h 31m

$116

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Wed 1/21

3:07 pm-1:46 pm

1 stop20h 39m

Austin Bergstrom

Sat 1/24

10:40 am-11:24 pm

1 stop14h 44m

$118

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Thu 1/29

6:20 am-2:21 pm

1 stop6h 01m

Austin Bergstrom

Mon 2/2

3:33 pm-7:10 pm

1 stop5h 37m

$128

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Thu 2/26

6:30 am-11:45 am

1 stop27h 15m

Austin Bergstrom

Sun 3/1

12:40 pm-9:17 pm

1 stop10h 37m

$129

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Thu 1/15

10:18 pm-5:11 pm

1 stop16h 53m

Austin Bergstrom

Sun 1/18

1:03 pm-5:44 pm

1 stop6h 41m

$144

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Tue 1/13

7:15 am-9:42 pm

1 stop12h 27m

Austin Bergstrom

Thu 1/15

6:45 am-11:59 pm

1 stop19h 14m

$149

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Tue 1/6

4:04 pm-10:56 pm

2 stops28h 52m

Austin Bergstrom

Tue 1/13

10:55 am-10:59 pm

1 stop14h 04m

$151

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Mon 3/2

6:30 am-6:27 pm

2 stops9h 57m

Austin Bergstrom

Wed 3/4

6:45 am-10:39 pm

1 stop17h 54m

$152

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Thu 1/22

6:20 am-2:21 pm

1 stop6h 01m

Austin Bergstrom

Sat 2/14

4:16 pm-9:17 pm

1 stop7h 01m

$155

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Tue 1/20

7:15 am-10:40 pm

1 stop13h 25m

Austin Bergstrom

Thu 1/22

3:16 pm-12:20 am

1 stop11h 04m

$156

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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 $258, 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 $279.

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 $308. 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 $400.

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

In the evening is the cheapest time of day to fly from Ontario to Austin when you can find flight prices for as low as $322. Flying to Austin in the evening is an ideal time because this is during off-peak travel hours. Flights to Austin are more costly in the morning, with an average ticket price of $351. Departure times in the morning 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 $334 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 $271 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.

Can stopping save me money on Ontario to Austin flights?

You could potentially save up to 47% on your flight if you consider stops on a Ontario to Austin flight.

How have Ontario to Austin flight prices changed over time?

As of December 2025, prices for Ontario to Austin flights are approximately 22% 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	$201
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 $201. The best round-trip flight deal from Ontario to Austin found on momondo in the last 72 hours is $489.

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 6h 01m 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 December 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 MAX 8 (15.82% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (11.39%), Boeing 737-800 (10.76%), and Airbus A320-100/200 (9.49%).
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 18%, and Delta at 3%.

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 8,010 reviews	Search Delta flights
Frontier	PriceFrom $130	Free Cancellation	Rating 5.8 3,085 reviews	Search Frontier flights
American Airlines	PriceFrom $226	Free Cancellation	Rating 7.2 11,043 reviews	Search American Airlines flights
Southwest	PriceFrom $234	Free Cancellation	Rating 7.9 4,252 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 $234 round-trip, up to an average price of $363. Our users have rated Southwest at 7.9/10.

Fredericksburg

Wimberley

San Marcos

Round Rock

Georgetown

Canyon Lake

Marble Falls

Horseshoe Bay

Dripping Springs

Cedar Park

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 $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 Ontario to Austin departing on 1/28. 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.

Can stopping save me money on Ontario to Austin flights?

You could potentially save up to 47% on your flight if you consider stops on a Ontario to Austin flight.

How have Ontario to Austin flight prices changed over time?

As of December 2025, prices for Ontario to Austin flights are approximately 22% more expensive when compared to flights at the same time last year.

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

Frontier is the most popular carrier operating from Ontario to Austin Bergstrom

What airlines fly to Austin?

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

Las Vegas (LAS) was the most common stop: 50% 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 10m.

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

Phoenix (PHX) has the shortest average layover time for this route: 0h 50m.

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

4 flights are operational weekly from Ontario to Austin as of December 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