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$55+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — AUS
Jan 20 — Jan 271
Mon 1/20
Mon 1/27
1 adult, Economy
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The best prices from Ontario to Austin Bergstrom are usually found in August or September, booked 49 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 January 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$208
(Frontier)

One-way from

$55
(Frontier)

Popular in

December

Cheapest in

August

Average price

$339
Provider with most accurate pricing for Ontario-Austin Bergstrom flight deals.
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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
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High demand for flights, 1% potential price rise
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Best time to find cheap flights, 1% potential price drop
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Average for round-trip flights in January 2025
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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 January 15, 2025.

This Frontier deal was found by Cheapflights users on 1/15. 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.
Sun 3/3012:59 amONT - AUS
1 stop8h 13mFrontier
Sat 4/51:14 pmAUS - ONT
1 stop9h 58mFrontier
Deal found 1/15$208
This United Airlines deal was found by Cheapflights users on 1/14. 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.
Wed 2/56:15 amONT - AUS
2 stops11h 31mUnited Airlines
Tue 2/112:20 pmAUS - ONT
2 stops8h 31mUnited Airlines
Deal found 1/14$227
This KAYAK deal was found by Cheapflights users on 1/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/46:45 amONT - AUS
1 stop10h 15mSouthwest
Thu 2/612:05 pmAUS - ONT
1 stop11h 00mSouthwest
Deal found 1/14$237
This Orbitz deal was found by Cheapflights users on 1/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/16:45 amONT - AUS
1 stop7h 45mMultiple Airlines
Tue 2/49:00 amAUS - ONT
2 stops13h 13mMultiple Airlines
Deal found 1/13$247
This American Airlines deal was found by Cheapflights users on 1/14. 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.
Wed 2/126:10 amONT - AUS
2 stops7h 39mAmerican Airlines
Tue 2/186:00 amAUS - ONT
1 stop5h 11mAmerican Airlines
Deal found 1/14$283
This Alaska Airlines deal was found by Cheapflights users on 1/14. 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.
Fri 2/77:00 amONT - AUS
1 stop8h 59mAlaska Airlines
Tue 2/119:00 amAUS - ONT
2 stops13h 13mAlaska Airlines
Deal found 1/14$295
This Delta deal was found by Cheapflights users on 1/13. 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.
Sat 2/221:21 pmONT - AUS
1 stop5h 56mDelta
Mon 2/246:59 pmAUS - ONT
1 stop6h 52mDelta
Deal found 1/13$357

Find flights from Ontario to Austin within your budget

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 January 15, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Sun 3/30

12:59 am-11:12 am

1 stop8h 13m

Austin Bergstrom

Sat 4/5

1:14 pm-9:12 pm

1 stop9h 58m

$208

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Wed 2/5

6:15 am-4:15 pm

1 stop8h 00m

Austin Bergstrom

Tue 2/11

5:15 am-12:41 pm

2 stops9h 26m

$222

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Tue 2/4

6:45 am-7:00 pm

1 stop10h 15m

Austin Bergstrom

Thu 2/6

12:05 pm-9:05 pm

1 stop11h 00m

$237

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Sat 2/1

6:45 am-4:30 pm

1 stop7h 45m

Austin Bergstrom

Tue 2/4

9:00 am-8:13 pm

2 stops13h 13m

$247

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Wed 2/12

6:10 am-3:49 pm

2 stops7h 39m

Austin Bergstrom

Tue 2/18

6:00 am-9:11 am

1 stop5h 11m

$283

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Fri 2/7

7:00 am-5:59 pm

1 stop8h 59m

Austin Bergstrom

Tue 2/11

9:00 am-8:13 pm

2 stops13h 13m

$295

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Sat 2/22

1:21 pm-9:17 pm

1 stop5h 56m

Austin Bergstrom

Mon 2/24

6:59 pm-11:51 pm

1 stop6h 52m

$357

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Tue 3/11

12:59 am-11:12 am

1 stop8h 13m

$55

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Wed 2/12

1:00 pm-12:35 am

1 stop9h 35m

$119

OntarioAustin

ONT - AUS

ONTAUS

Ontario

Tue 4/15

12:00 pm-4:45 pm

Nonstop2h 45m

$126

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 13 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy2 starsTrust Score*2 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.

Travel insights for flights from Ontario to Austin

Get recent, data-driven insights about flights from Ontario to Austin including ideal travel times, pricing trends, and more.

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 January 10, 2025.

Booking 49 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 January 15, 2025.

It’s optimal to fly from Ontario to Austin in the evening. By choosing this option you can save up to 48% on the cost of your flight, compared to a flight in the morning.

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 December 16, 2024.

Travelers seeking maximum savings on their Ontario to Austin flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday 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 January 15, 2025.
Peruse reviews from past customers who have flown with Frontier, United Airlines and American Airlines 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
4,659 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Alaska Airlines
8.0
Very good
9,678 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

United Airlines
7.4
Good
8,964 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

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.

  • How popular is this Ontario to Austin flight route?

    This flight path from Ontario to Austin Bergstrom was viewed by 4 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 Frontier is currently your cheapest option to Austin, with prices starting at $208. Additional round-trip tickets that might be worth considering are offered by United Airlines and Southwest, with the lowest prices starting at $222 and $237, respectively. Frontier is priced at 37% 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 $55 on Frontier. Other airlines that offer cheap prices include Delta from $119 and Southwest from $126 one-way.

  • What are the cheapest flights from Ontario to Austin?

    Looking at all options, your cheapest flight can be booked for $144. While the most popular route (Ontario - Austin Bergstrom) can be booked for $115 on average our data indicates $306 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 d