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$99+ Cheap flights from Ontario to Austin (ONT - AUS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — AUS
abr. 1 — abr. 81
mar. 4/1
mar. 4/8
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Austin Bergstrom are usually found in August or September, booked 35 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Ontario to Austin

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Austin (AUS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated marzo 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$212
(United Airlines)

One-way from

$99
(Southwest)

Popular in

December

Cheapest in

August

Average price

$347

Good round-trip deal

$298 or less

Good one-way deal

$187 or less
Provider with most accurate pricing for Ontario-Austin Bergstrom flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Austin Bergstrom flights.
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From Ontario to Austin Bergstrom
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One-way flight from Ontario to Austin Bergstrom
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Ontario to Austin Bergstrom.
Search Deals
Price to beat on a one-way flight from Ontario to Austin Bergstrom.
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Find flight deals from Ontario to Austin

Cheapest flights from Ontario to Austin
Explore the most affordable flight options available from Ontario to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 27, 2025.

This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/221:35 pmONT - AUS
1 stop6h 25mUnited Airlines
mar. 4/294:22 pmAUS - ONT
1 stop7h 36mUnited Airlines
Deal found 3/25$212
This Southwest deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/153:10 pmONT - AUS
1 stop5h 20mSouthwest
sáb. 4/195:50 pmAUS - ONT
Nonstop3h 10mSouthwest
Deal found 3/26$217
This Frontier deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/912:59 amONT - AUS
1 stop9h 59mFrontier
lun. 4/143:51 pmAUS - ONT
1 stop7h 00mFrontier
Deal found 3/26$218
This Alaska Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/177:17 pmONT - AUS
1 stop8h 58mAlaska Airlines
sáb. 4/197:59 pmAUS - ONT
1 stop15h 29mAlaska Airlines
Deal found 3/26$226
This American Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/287:30 amONT - AUS
1 stop7h 42mAmerican Airlines
lun. 6/26:10 pmAUS - ONT
1 stop5h 47mAmerican Airlines
Deal found 3/26$227
This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/296:00 amONT - AUS
1 stop9h 25mDelta
dom. 6/15:10 amAUS - ONT
1 stop6h 01mDelta
Deal found 3/25$237
This Hawaiian Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/126:00 amONT - AUS
1 stop10h 33mHawaiian Airlines
lun. 9/155:50 pmAUS - ONT
1 stop8h 09mHawaiian Airlines
Deal found 3/25$446
This Expedia deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/912:59 amONT - AUS
1 stop9h 59mMultiple Airlines
lun. 4/147:59 pmAUS - ONT
2 stops16h 40mMultiple Airlines
Deal found 3/25$467

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Austin 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, Cheapflights users made 2,558,603 searches. Data last updated marzo 27, 2025.
Use the filters below to find and compare flights from Ontario to Austin that are best for you.

Fly from

Ontario

Fly to

Austin

Route

Depart

Return

Price

OntarioAustin

ONT - AUS

ONTAUS

Ontario

sáb. 6/7

1:36 pm-11:46 pm

1 stop8h 10m

Austin Bergstrom

mar. 6/10

5:30 am-12:14 pm

1 stop8h 44m

$212

OntarioAustin

ONT - AUS

ONTAUS

Ontario

mar. 4/15

3:10 pm-10:30 pm

1 stop5h 20m

Austin Bergstrom

sáb. 4/19

5:50 pm-7:00 pm

Nonstop3h 10m

$217

OntarioAustin

ONT - AUS

ONTAUS

Ontario

mar. 4/8

12:59 am-11:08 am

1 stop8h 09m

Austin Bergstrom

vie. 4/11

3:51 pm-8:51 pm

1 stop7h 00m

$218

OntarioAustin

ONT - AUS

ONTAUS

Ontario

jue. 4/17

7:17 pm-6:15 am

1 stop8h 58m

Austin Bergstrom

sáb. 4/19

7:59 pm-9:28 am

1 stop15h 29m

$226

OntarioAustin

ONT - AUS

ONTAUS

Ontario

mié. 4/16

2:44 pm-10:12 pm

1 stop5h 28m

Austin Bergstrom

dom. 4/20

6:05 am-8:59 am

1 stop4h 54m

$227

OntarioAustin

ONT - AUS

ONTAUS

Ontario

vie. 5/30

12:18 pm-11:01 pm

1 stop8h 43m

Austin Bergstrom

mar. 6/3

7:00 pm-11:42 pm

1 stop6h 42m

$237

OntarioAustin

ONT - AUS

ONTAUS

Ontario

jue. 6/19

6:58 pm-6:07 am

1 stop9h 09m

Austin Bergstrom

dom. 6/22

6:00 pm-11:59 pm

1 stop7h 59m

$490

OntarioAustin

ONT - AUS

ONTAUS

Ontario

dom. 4/13

12:59 am-11:12 am

1 stop8h 13m

Austin Bergstrom

mié. 4/16

7:59 pm-10:39 am

2 stops16h 40m

$504

OntarioAustin

ONT - AUS

ONTAUS

Ontario

mié. 5/14

12:00 pm-4:45 pm

Nonstop2h 45m

$99

OntarioAustin

ONT - AUS

ONTAUS

Ontario

sáb. 4/26

1:35 pm-10:00 pm

1 stop6h 25m

$104

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 15 results
1
2

Compare providers for flights from Ontario to Austin

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Austin in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
CheapOairPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Austin flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Austin flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Austin flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Austin flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Austin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Austin

Have a flexible travel schedule? Discover the best time to fly to Austin from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Austin

How far ahead should I book a flight from Ontario to Austin?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Austin. Price data was last updated on March 21, 2025.

Booking 35 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Austin. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ontario to Austin?

Currently, January is the cheapest month in which you can book a flight from Ontario to Austin (average of $286). Flying from Ontario to Austin in March is currently the most expensive (average of $362). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to AUS?

Find hourly flight availability from Ontario to Austin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated marzo 27, 2025.

It’s optimal to fly from Ontario to Austin in the evening. By choosing this option you can save up to 55% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Ontario to Austin?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Austin. Price data was last updated on March 23, 2025.

Travelers seeking maximum savings on their Ontario to Austin flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Austin by month

Plan your trip to Austin by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Austin ranges from 2.1 - 4.2 inches per month. May is typically the wettest month, when rainfall can reach 4.2 in. July is typically the driest time to visit Austin when rainfall is around 2.1 in.

Temperature in Austin by month

Plan your trip to Austin by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Austin, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Austin

Get insights into the airlines that provide service to Austin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Austin. Reviews last updated marzo 27, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Ontario to Austin to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,792 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,895 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,334 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Crew

8.6

Food

7.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Austin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Ontario to Austin?

    If you wish to fly to Austin from Ontario, then you need to book flights from Ontario to Austin Bergstrom. There is 1 flight from Ontario (ONT) to Austin Bergstrom (AUS) per day to choose from. Flights to Austin from Ontario are available from 5 different airlines, which means you should have some options if you want to compare airfare deals. 2h 40m is how long a nonstop flight from Ontario to Austin Bergstrom typically takes.

  • How popular is this Ontario to Austin flight route?

    This flight path from Ontario to Austin Bergstrom was viewed by 6 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Ontario to Austin round-trip?

    Flying on United Airlines is currently your cheapest option to Austin, with prices starting at $212. Additional round-trip tickets that might be worth considering are offered by Southwest and Frontier, with the lowest prices starting at $217 and $218, respectively. United Airlines is priced at 36% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Ontario to Austin one-way?

    One-way options have recently been found by users for as low as $99 on Southwest. Other airlines that offer cheap prices include Alaska Airlines from $103 and United Airlines from $104 one-way.

  • What are the cheapest flights from Ontario to Austin?

    Looking at all options, your cheapest flight can be booked for $115. While the most popular route (Ontario - Austin Bergstrom) can be booked for $207 on average our data indicates $316 when flying from Ontario to Austin.

  • Can I find deals for flights from Ontario to Austin that include hotel bookings?

    Yes. In addition to deals on Ontario to Austin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Austin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Austin.

  • Can I find deals for business class flights from Ontario to Austin?

    Yes. Cheapflights offers flight deals from Ontario to Austin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Austin?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Austin (average of $286). Flying from Ontario to Austin in March is currently the most expensive (average of $362). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Ontario?

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

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Alternative routes for Ontario to Austin

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to Austin

Discover the top 5 airlines that operate flights from Ontario to Austin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated marzo 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$117Average$198FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$218Average$391FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$231Average$360FlexibilityNo cancel feeOn-time63%
DeltaCheapest$238Average$462FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$328Average$449FlexibilityNo cancel feeOn-time69%
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