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Cheap flights from Ontario to Austin from $87

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 5/8. 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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Find the cheapest flights from Ontario to Austin

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Austin.
Frontier Logo
12:10 pm - 11:18 pmONT-AUS
9h 08m1 stop
Frontier Logo
6:00 am - 11:20 amAUS-ONT
7h 20m1 stop
$199Frontier
Find Deal
Tue, Apr 29 - Wed, Apr 30
Frontier Logo
12:16 pm - 11:20 pmONT-AUS
9h 04m1 stop
Frontier Logo
6:00 am - 11:15 amAUS-ONT
7h 15m1 stop
$200Frontier
Find Deal
Thu, May 8 - Mon, May 12
United Airlines Logo
6:41 pm - 5:40 amONT-AUS
8h 59m1 stop
United Airlines Logo
4:51 pm - 9:04 pmAUS-ONT
6h 13m1 stop
$217United Airlines
Find Deal
Sat, Jun 7 - Tue, Jun 10
Delta Logo
6:00 am - 1:34 pmONT-AUS
5h 34m1 stop
Delta Logo
7:00 pm - 11:42 pmAUS-ONT
6h 42m1 stop
$237Delta
Find Deal
Sat, May 10 - Wed, May 14
Southwest Logo
11:05 am - 10:25 pmONT-AUS
9h 20m1 stop
Southwest Logo
7:20 pm - 11:00 pmAUS-ONT
5h 40m1 stop
$239Southwest
Find Deal
Sat, May 31 - Sat, Jun 21
Delta Logo
10:01 am - 5:50 pmONT-AUS
5h 49m1 stop
Delta Logo
7:00 pm - 11:42 pmAUS-ONT
6h 42m1 stop
$245Delta
Find Deal
Sun, May 11 - Wed, May 14
American Airlines Logo
12:59 am - 8:56 amONT-AUS
5h 57m1 stop
American Airlines Logo
6:05 am - 10:04 amAUS-ONT
5h 59m1 stop
$254American Airlines
Find Deal
Fri, Jun 6 - Wed, Jun 11
Southwest Logo
6:15 am - 11:05 amONT-AUS
2h 50mnonstop
Southwest Logo
1:00 pm - 5:30 pmAUS-ONT
6h 30m1 stop
$258Southwest
Find Deal
Sat, Jun 7 - Tue, Jun 10
American Airlines Logo
12:59 am - 10:10 amONT-AUS
7h 11m1 stop
American Airlines Logo
5:00 am - 10:01 amAUS-ONT
7h 01m1 stop
$286American Airlines
Find Deal
Thu, Jul 3 - Tue, Jul 8
United Airlines Logo
1:36 pm - 11:59 pmONT-AUS
8h 23m2 stops
United Airlines Logo
5:15 am - 12:14 pmAUS-ONT
8h 59m2 stops
$335United Airlines
Find Deal
Tue, May 27 - Fri, May 30

Frontier flights from Ontario to Austin

Our best Frontier deals on Ontario to Austin flight tickets
Frontier
Apr 10
ONT12:59 amOntario
8h 13m
1 stop
AUS11:12 amAustin Bergstrom
Apr 22
AUS6:00 amAustin Bergstrom
7h 20m
1 stop
ONT11:20 amOntario
Frontier
Apr 11
ONT9:41 pmOntario
12h 43m
1 stop
AUS12:24 pmAustin Bergstrom
Apr 22
AUS4:41 pmAustin Bergstrom
19h 12m
1 stop
ONT9:53 amOntario
Frontier
Apr 16
ONT12:59 amOntario
9h 59m
1 stop
AUS12:58 pmAustin Bergstrom
Apr 21
AUS3:51 pmAustin Bergstrom
7h 00m
1 stop
ONT8:51 pmOntario

United Airlines flights from Ontario to Austin

Our best United Airlines deals on Ontario to Austin flight tickets
United Airlines
Jun 7
ONT6:41 pmOntario
8h 59m
1 stop
AUS5:40 amAustin Bergstrom
Jun 10
AUS4:51 pmAustin Bergstrom
6h 13m
1 stop
ONT9:04 pmOntario
United Airlines
May 27
ONT1:36 pmOntario
8h 23m
2 stops
AUS11:59 pmAustin Bergstrom
May 30
AUS5:15 amAustin Bergstrom
8h 59m
2 stops
ONT12:14 pmOntario
United Airlines
May 18
ONT6:08 amOntario
4h 53m
1 stop
AUS1:01 pmAustin Bergstrom
May 21
AUS5:15 amAustin Bergstrom
9h 09m
2 stops
ONT12:24 pmOntario

See travel insights to Austin from

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?

The cheapest month to fly to Austin from Ontario is in August. Flight prices, which tend to average around $278, are often lower during this time because this is during the off-season. If you’re not able to fly to Austin in August, then September is your next best option. Flight prices from Ontario to Austin during September average around $278.

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 $303. 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 $388.

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 $327. 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 $340. 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 21 weeks ahead of your departure date. In general, you can expect to find flights to Austin for around $333 when searching 21 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 $200 on momondo.

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

There are 1 cabin classes 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 April 2025, prices for Ontario to Austin flights are approximately 53% 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

$87

Fastest flight time

2h 45m

Direct flights

Every day

Airports in Austin

1 airport
The best one-way flight to Austin from Ontario in the past 72 hours is $87. The best round-trip flight deal from Ontario to Austin found on momondo in the last 72 hours is $199.
The fastest flight from Ontario to Austin takes 2h 45m
Direct flights go from Ontario to Austin every day.
There is 1 airport near Austin: Austin Bergstrom (AUS)

  • 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 45m 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $116Free CancellationRating
5.9
3,277 reviews
Search Frontier flights
American AirlinesPriceFrom $217Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $231Free CancellationRating
8.0
4,277 reviews
Search Southwest flights
DeltaPriceFrom $238Free CancellationRating
8.0
7,906 reviews
Search Delta flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
8,633 reviews
Search United Airlines flights
  • Southwest Flights From Ontario to Austin

    Southwest is one of the most popular airlines flying from Ontario to Austin, operating 1 flight/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 $356. Our users have rated Southwest at 8.0/10.

  • United Airlines Flights From Ontario to Austin

    United Airlines is also a popular choice for this route. United Airlines flight deals for Ontario to Austin start from as low as $328 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $410. United Airlines operates 14 flights to Austin from Ontario in an average week. Users have rated it 7.4/10 across 8,633 reviews.


Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
Fredericksburg
San Marcos
Round Rock
Georgetown
Wimberley
Cedar Park
Marble Falls
Dripping Springs
Pflugerville
Canyon Lake
Seguin
Horseshoe Bay
Bastrop
Buda
Kyle
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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