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Uncover the best deals on Austin to Ontario flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest AUS - ONT Flights
Useful information for finding best airline tickets from Austin Bergstrom International to Ontario International on your next trip.
Cheapest Round Trip Flight
$285
Frontier Airlines
• 1 stop
• 7h 36m
Jul 03 – Jul 06
The cheapest round trip flight from Austin to Ontario (AUS-ONT-AUS) is currently $285
Cheapest Direct Flight
$343
Southwest Airlines
• nonstop
• 4h 15m
Jul 02
The cheapest nonstop flight from Austin to Ontario (AUS-ONT) is currently $343
Fastest Flight
4h 15m
The fastest nonstop flight from Austin to Ontario (AUS-ONT) takes 4h 15m
Top Airlines Flying from Austin to Ontario
Latest Flight Deals from Austin (AUS) to Ontario (ONT)
Compare and book low fare round-trip air tickets from Austin to Ontario. Ideal for travelers with confirmed return itineraries.
Jul 03 - Jul 06, Economy
Austin → Ontario
7h 36m
12:12 PM - 3:08 PM • 1 stop
Austin → Ontario
8h 50m
6:00 AM - 1:30 PM • 1 stop
Frontier Airlines
Jul 03 - Jul 06, Economy
Austin → Ontario
8h 55m
6:30 AM - 10:05 AM • 1 stop
Austin → Ontario
8h 50m
6:00 AM - 1:30 PM • 1 stop
Frontier Airlines
Jul 03 - Jul 06, Economy
Austin → Ontario
8h 54m
8:15 PM - 11:49 PM • 1 stop
Austin → Ontario
8h 50m
6:00 AM - 1:30 PM • 1 stop
Frontier Airlines
Jul 04 - Jul 04, Economy
Austin → Ontario
8h 55m
6:30 AM - 10:05 AM • 1 stop
Austin → Ontario
30h 18m
3:34 PM - 11:52 AM • 1 stop
Frontier Airlines
Jul 04 - Jul 04, Economy
Austin → Ontario
8h 49m
6:00 AM - 9:29 AM • 1 stop
Austin → Ontario
5h 13m
4:31 PM - 9:44 PM • nonstop
American Airlines
Flying to Ontario soon? We've surfaced some of the most affordable last-minute flights from Austin to Ontario, ideal for urgent plans or spontaneous trips.
Jul 03 - Jul 06, Economy
Austin → Ontario
7h 36m
12:12 PM - 3:08 PM • 1 stop
Austin → Ontario
8h 50m
6:00 AM - 1:30 PM • 1 stop
Frontier Airlines
Jul 03 - Jul 06, Economy
Austin → Ontario
8h 55m
6:30 AM - 10:05 AM • 1 stop
Austin → Ontario
8h 50m
6:00 AM - 1:30 PM • 1 stop
Frontier Airlines
Jul 03 - Jul 06, Economy
Austin → Ontario
8h 54m
8:15 PM - 11:49 PM • 1 stop
Austin → Ontario
8h 50m
6:00 AM - 1:30 PM • 1 stop
Frontier Airlines
Jul 04 - Jul 04, Economy
Austin → Ontario
8h 55m
6:30 AM - 10:05 AM • 1 stop
Austin → Ontario
30h 18m
3:34 PM - 11:52 AM • 1 stop
Frontier Airlines
Jul 04 - Jul 04, Economy
Austin → Ontario
8h 49m
6:00 AM - 9:29 AM • 1 stop
Austin → Ontario
5h 13m
4:31 PM - 9:44 PM • nonstop
American Airlines
Looking for the fastest way to Ontario? These direct flight options from AUS to ONT offer both convenience and value—no layovers, just straight to your destination.
Jul 02 - Jul 07, Economy
Austin → Ontario
4h 15m
8:10 PM - 9:05 PM • nonstop
Austin → Ontario
5h
11:15 AM - 4:15 PM • nonstop
Southwest Airlines
Jul 04 - Jul 06, Economy
Austin → Ontario
4h 15m
4:05 PM - 5:00 PM • nonstop
Austin → Ontario
5h
4:10 PM - 9:10 PM • nonstop
Southwest Airlines
Jul 03 - Jul 05, Economy
Austin → Ontario
4h 15m
8:10 PM - 9:05 PM • nonstop
Austin → Ontario
4h 15m
6:25 AM - 11:20 AM • nonstop
Southwest Airlines
Jul 07 - Jul 07, Economy
Austin → Ontario
4h 15m
2:30 PM - 3:25 PM • nonstop
Austin → Ontario
5h
7:50 PM - 12:50 AM • nonstop
Southwest Airlines
Jul 01 - Jul 05, Economy
Austin → Ontario
4h 15m
2:30 PM - 3:25 PM • nonstop
Austin → Ontario
4h 5m
12:20 PM - 5:05 PM • nonstop
Southwest Airlines
FAQs on Austin to Ontario Flights
What are the airports in Austin?
AUS
What’s the most popular airline flying from AUS to ONT?
The most popular airline flying from Austin to Ontario are
Can I fly from AUS to ONT non-stop?
Yes, you can fly AUS to ONT non-stop on
Which airlines fly nonstop between Austin and Ontario?
The non-stop flights between Austin and Ontario are .
What’s the earliest departure time from AUS to ONT Airport?
The earliest flight leaves AUS at 6:00 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my Austin to Ontario flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from AUS to ONT?
Read the fare rules of the Austin to Ontario air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Austin and Ontario?
operate flights between Austin and Ontario
How long does a flight from Austin to Ontario take?
It takes approximately 3 hour to fly non-stop from AUS to ONT, which is 1196.46 miles by air.
Which airlines provide the cheapest flights from Austin (AUS) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from AUS were found on F9 : USD 285
Do I need a passport to fly between AUS and ONT?
No
What’s the latest departure time from AUS to ONT ?
The last flight leaves AUS at 8:15 pm
Austin (AUS) to Ontario (ONT): Airport Information
| Origin Airport | Austin Bergstrom International , Austin, US |
| Destination Airport | Ontario International , Ontario, US |
| Distance | 1196 miles |
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