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Cheap Flights from Ontario International to Austin-Bergstrom

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Compare Ontario International to Austin-Bergstrom flight deals

Find the cheapest month or even day of the year to fly to Austin-Bergstrom

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Flight deals from Ontario International to Austin-Bergstrom

Looking for a cheap last-minute deal or the best return flight from Ontario International to Austin-Bergstrom? Find the lowest prices on one-way and return tickets right here.
Austin.Rs29,051 per passenger.Departing Tue, 15 Jul.One-way flight with Hawaiian Airlines.Outbound indirect flight with Hawaiian Airlines, departs from Ontario International on Tue, 15 Jul, arriving in Austin-Bergstrom.Price includes taxes and charges.From Rs29,051, select.
Austin.Rs29,142 per passenger.Departing Sat, 24 May.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Sat, 24 May, arriving in Austin-Bergstrom.Price includes taxes and charges.From Rs29,142, select.
Austin.Rs29,192 per passenger.Departing Mon, 15 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 15 Sep, arriving in Austin-Bergstrom.Price includes taxes and charges.From Rs29,192, select.
Austin.Rs29,698 per passenger.Departing Sun, 31 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Sun, 31 Aug, arriving in Austin-Bergstrom.Price includes taxes and charges.From Rs29,698, select.
Austin.Rs30,126 per passenger.Departing Tue, 10 Jun.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Ontario International on Tue, 10 Jun, arriving in Austin-Bergstrom.Price includes taxes and charges.From Rs30,126, select.
Austin.Rs33,203 per passenger.Departing Wed, 8 Oct.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 8 Oct, arriving in Austin-Bergstrom.Price includes taxes and charges.From Rs33,203, select.
Austin.Rs33,357 per passenger.Departing Wed, 11 Jun.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Wed, 11 Jun, arriving in Austin-Bergstrom.Price includes taxes and charges.From Rs33,357, select.
Austin.Rs33,385 per passenger.Departing Wed, 10 Sep.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Wed, 10 Sep, arriving in Austin-Bergstrom.Price includes taxes and charges.From Rs33,385, select.

Find the cheapest month to fly from Ontario International to Austin-Bergstrom

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Austin-Bergstrom flights are currently cheapest in July.
May
from Rs29,142
Jun
from Rs30,126
Jul
from Rs29,051
Aug
from Rs29,698
Sep
from Rs29,192
Oct
from Rs33,203
Nov
from Rs39,578
Dec
from Rs62,835
Jan
from Rs62,565
Feb
Find prices
Mar
Find prices
Apr
Find prices

Direct flights from Ontario International to Austin-Bergstrom

Ontario International to Austin-Bergstrom: Alternative routes

Compare routes from Ontario International to Austin below. You may find an airport to fly into that's cheaper, faster, or easier than Austin-Bergstrom.

Ontario to Austin: Flight information

The things to know before you go.
Cheapest flight foundRs29,051
Cheapest month to flyJuly
Average flight time2 hrs, 46 mins
Most popular airlineSouthwest Airlines
Average flights per week7

Finding cheap flights from Ontario International to Austin-Bergstrom: Frequently asked questions

The best price we found for a return flight from Ontario International to Austin-Bergstrom is Rs44,830. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 46 minutes is the average flight time from Ontario International to Austin-Bergstrom.
Southwest Airlines flies direct from Ontario International to Austin-Bergstrom.
As of May 2025, there are 7 flights per week flying from Ontario International to Austin-Bergstrom.
The cheapest month to fly from Ontario International to Austin-Bergstrom is usually May 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Austin-Bergstrom Airport on Sunday, 10 August 2025.
Yes – the average flight time is 2 hours and 46 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Austin-Bergstrom but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Austin is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to Austin-Bergstrom.

Flying from Ontario International Airport (ONT) to Austin-Bergstrom International Airport (AUS): what you need to know

  • Around 2 hours 45 minutes is how long you'll be travelling on a direct flight from Ontario International Airport to Austin-Bergstrom International Airport.

  • The timezone in Austin is UTC-5, which is two hours ahead of Ontario.

  • You can choose from five weekly Ontario International Airport to Austin-Bergstrom International Airport flights. The 06:20 departure with Southwest Airlines is the earliest available. Southwest Airlines operates the latest service of the day at 15:45.

  • Arrive at the airport on time so you don't miss your ONT to AUS flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

  • Travelling during a peak time like August? School holidays and other popular seasons can result in longer queues at airport checkpoints. Play it safe and arrive up to four hours ahead of international flights and two hours before a domestic departure.

  • Southwest Airlines has direct flights from Ontario International Airport to Austin-Bergstrom International Airport. Book with this popular airline, then get ready to see the sights in Austin — and maybe even more of United States if you have time.

  • The majority of travellers choose to travel with Southwest Airlines on this route.

  • Southwest Airlines tops the rankings as the most punctual carrier for ONT to AUS flights, with 83.33% of its services landing on schedule.

  • We make it a piece of cake to book a flight with a stopover. To see all your options for tickets from Ontario International Airport to Austin-Bergstrom International Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to visit the city of your choice. Some great stopovers between ONT and AUS include:

    • Phoenix Sky Harbour International Airport

    • Harry Reid Airport (formerly McCarran Airport)

    • Denver International Airport

How to find the cheapest flights from Ontario International Airport (ONT) to Austin-Bergstrom International Airport (AUS)

  • Currently, Rs29,051 is the lowest price we've seen for a one-way Ontario International Airport to Austin-Bergstrom International Airport flight. The best price for a return ticket is Rs44,830. Remember that fares can change due to availability at the time of booking.

  • Score cheap tickets from ONT to AUS by booking ten months ahead. Based on our research, that's the sweet spot for bagging a bargain.

  • September is the cheapest month for flights from Ontario International Airport to Austin-Bergstrom International Airport. If you want to fly at a different time of year, the 'Whole month' tool will show you the lowest prices across every month.

  • There's no need to check back in every day to see if fares have gone down when you create a Price Alert. We'll notify you as soon as a special offer becomes available on cheap flights from ONT to AUS.

  • Pick your ideal departure and arrival times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Ontario International Airport to Austin-Bergstrom International Airport.

Handy information about Ontario International Airport (ONT)

  • ONT is located at 2900 E. Airport Drive.

  • Ontario International Airport gets high marks for on-time performance. 83.6% of flights that take off from ONT arrive at their destination on time.

  • To reach Ontario International Airport from central Ontario, it'll take about 10 minutes if you're going by car. Of course, this depends on traffic. It's approximately 6 kilometres from the airport to the city centre.

  • Catching public transport? You can expect a journey time of around 1 hour 30 minutes.

  • Searching for a convenient hotel close to ONT? If you're boarding an early flight from Ontario International Airport to Austin-Bergstrom International Airport, these stays will have you sleeping moments from your departure gate:

Arriving at Austin-Bergstrom International Airport (AUS)

Getting from Austin-Bergstrom International Airport (AUS) to central Austin

  • The address for AUS is 3600 Presidential Blvd.

  • From Austin-Bergstrom International Airport, Austin is approximately 19 kilometres away. It takes around 25 minutes to reach the centre by car.

  • It'll take around 3 hours 25 minutes if you're travelling by public transport.

When to fly to Austin-Bergstrom International Airport (AUS)

  • The quietest month for a flight from Ontario International Airport to Austin-Bergstrom International Airport is April, while July is the most popular. Choose the best time to go to Austin based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • Book your flight from Ontario International Airport to Austin-Bergstrom International Airport for August if you want to explore Austin during its warmest month. You can expect temperatures of between 23ºC and 41ºC.

  • If you'd rather travel in cooler conditions, search for a cheap ticket from ONT to AUS in January. Average temperatures are between 3ºC and 19ºC then.

Explore more of United States

  • Austin has plenty going for it, but there are so many other parts of United States you'll want to see. Around 241 kilometres east of Austin, a trip to Houston will keep you on the go. Start with attractions like The Houston Museum of Natural Science, The Museum of Fine Arts, Houston, Beck Building and Hermann Park.

  • Around 121 kilometres south-west of Austin, San Antonio is another favourite stop in United States. Experience this destination's highlights firsthand at The San Antonio River Walk, San Antonio Missions National Historical Park and San Fernando Cathedral.

Plan the rest of your trip from Ontario to Austin

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.