Cheap Flights from Austin to Ontario
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Flights from Austin to Ontario
Flight deals from Austin to Ontario
We've found these cheap flights for you. You can book one-way or return flight tickets.
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Round-trip
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One way
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Cheapest nonstop
AUS 13:003hDirectONT 14:00Austin - Ontario | Wed, Aug 6 | Southwest Airlines
SIN 07:452h 55mDirectAUS 12:40Ontario - Austin | Wed, Aug 13 | Southwest AirlinesHK$1,810 HK$2,09814% OFF14% OFFHK$2,098 HK$1,810 -
AUS 15:052h 55mDirectONT 16:00Austin - Ontario | Tue, Jul 22 | Southwest Airlines
SIN 06:353hDirectAUS 11:35Ontario - Austin | Tue, Jul 29 | Southwest AirlinesHK$1,846 HK$2,09812% OFF12% OFFHK$2,098 HK$1,846
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AUS 18:007h 59m1 stopsONT 23:59Austin - Ontario | Sat, Jun 21 | Hawaiian Airlines
SIN 06:153h 2mDirectAUS 11:17Ontario - Austin | Sat, Jun 28 | Delta Air LinesHK$1,313 HK$2,09837% OFF37% OFFHK$2,098 HK$1,313 -
AUS 17:358h 22m1 stopsONT 23:57Austin - Ontario | Wed, Jun 11 | Hawaiian Airlines
SIN 05:306h 45m1 stopsAUS 14:15Ontario - Austin | Sat, Jun 14 | Spirit AirlinesHK$1,37035% OFFHK$2,098 HK$1,370
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AUS 13:5323h 59m1 stopsONT 11:52Austin - Ontario | Sun, Jun 15 | Frontier Airlines
SIN 05:3011h 44m1 stopsAUS 19:14Ontario - Austin | Fri, Jun 20 | Spirit AirlinesHK$1,38634% OFFHK$2,098 HK$1,386 -
AUS 13:538h 58m1 stopsONT 20:51Austin - Ontario | Thu, Jun 12 | Frontier Airlines
SIN 08:352h 49mDirectAUS 13:24Ontario - Austin | Sun, Jun 15 | Spirit AirlinesHK$1,39434% OFFHK$2,098 HK$1,394
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AUS 06:0019h 50m1 stopsONT 23:50Austin - Ontario | Mon, Jul 21 | Frontier Airlines
SIN 20:107h 57m1 stopsAUS 06:07Ontario - Austin | Mon, Jul 28 | Alaska AirlinesHK$1,43232% OFFHK$2,098 HK$1,432
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AUS 13:538h 58m1 stopsONT 20:51Austin - Ontario | Mon, Jun 23 | Frontier Airlines
SIN 08:352h 49mDirectAUS 13:24Ontario - Austin | Sun, Jun 29 | Spirit AirlinesHK$1,45830% OFFHK$2,098 HK$1,458
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AUS 07:158h 11m1 stopsONT 13:26Austin - Ontario | Thu, Jul 31 | Hawaiian Airlines
SIN 18:503h 3mDirectAUS 23:53Ontario - Austin | Wed, Aug 6 | Delta Air LinesHK$1,45830% OFFHK$2,098 HK$1,458
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AUS 13:548h 58m1 stopsONT 20:52Austin - Ontario | Mon, Jul 28 | Frontier Airlines
SIN 07:453h 7mDirectAUS 12:52Ontario - Austin | Wed, Jul 30 | American AirlinesHK$1,49328% OFFHK$2,098 HK$1,493
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AUS 07:158h 11m1 stopsONT 13:26Austin - Ontario | Tue, Aug 5 | Alaska Airlines
SIN 10:303h 13mDirectAUS 15:43Ontario - Austin | Tue, Aug 12 | Delta Air LinesHK$1,52427% OFFHK$2,098 HK$1,524 -
AUS 07:0018h 50m1 stopsONT 23:50Austin - Ontario | Tue, Jun 24 | Frontier Airlines
SIN 08:352h 49mDirectAUS 13:24Ontario - Austin | Sun, Jun 29 | Spirit AirlinesHK$1,52827% OFFHK$2,098 HK$1,528
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AUS 13:0017h 25m1 stopsONT Invalid DateAustin - Ontario | Fri, Jun 13 | Normal Airline
ONT 15:006hDirectAUS 16:00Ontario - Austin | Sun, Jun 15 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
AUS 20:552h 55mDirectONT 21:50Austin - Ontario | Sat, Jul 5 | Southwest AirlinesHK$913 HK$1,08516% OFF16% OFFHK$1,085 HK$913
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AUS 13:003hDirectONT 14:00Austin - Ontario | Wed, Aug 6 | Southwest AirlinesHK$955 HK$1,08512% OFF12% OFFHK$1,085 HK$955
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AUS 13:548h 58m1 stopsONT 20:52Austin - Ontario | Mon, Jul 28 | Frontier AirlinesHK$566 HK$1,08548% OFF48% OFFHK$1,085 HK$566
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AUS 15:158h 37m1 stopsONT 21:52Austin - Ontario | Sat, Jul 12 | Frontier AirlinesHK$58846% OFFHK$1,085 HK$588
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AUS 13:538h 58m1 stopsONT 20:51Austin - Ontario | Mon, Jun 23 | Frontier AirlinesHK$62043% OFFHK$1,085 HK$620
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AUS 15:108h 41m1 stopsONT 21:51Austin - Ontario | Sat, Jun 14 | Frontier AirlinesHK$68037% OFFHK$1,085 HK$680
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AUS 13:538h 58m1 stopsONT 20:51Austin - Ontario | Mon, Jun 16 | Frontier AirlinesHK$69936% OFFHK$1,085 HK$699
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AUS 13:538h 58m1 stopsONT 20:51Austin - Ontario | Sun, Jun 15 | Frontier AirlinesHK$70335% OFFHK$1,085 HK$703
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AUS 20:0914h 1m1 stopsONT 08:10Austin - Ontario | Mon, Jun 23 | Spirit AirlinesHK$70435% OFFHK$1,085 HK$704 -
AUS 13:548h 58m1 stopsONT 20:52Austin - Ontario | Fri, Aug 1 | Frontier AirlinesHK$70535% OFFHK$1,085 HK$705
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AUS 18:007h 59m1 stopsONT 23:59Austin - Ontario | Tue, Jun 24 | Hawaiian AirlinesHK$70635% OFFHK$1,085 HK$706
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AUS 20:0914h 1m1 stopsONT 08:10Austin - Ontario | Mon, Jun 16 | Spirit AirlinesHK$70835% OFFHK$1,085 HK$708
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AUS 13:0017h 25m1 stopsONT Invalid DateAustin - Ontario | Fri, Jun 13 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Flight Information from Austin to Ontario
| Cheapest one-way flight price | HK$565 |
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| Cheapest return ticket price | HK$1,312 |
| Off-season travel month | February |
| Peak season for travel | June |
| Flight distance | 1,912.68km |
| Popular airline | Alaska Airlines |
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
FAQ
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When are flight tickets from Austin (AUS) to Ontario (ONT) the cheapest?
Airlines adjust prices for flights from Austin to Ontario based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much are flights from Austin (AUS) to Ontario (ONT) cost?
According to Trip.com's data, the lowest price is around HK$2,287.
How to find a cheap flight from Austin to Ontario
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Austin to Ontario. Book your flights at the right time and save more.
Be flexible with your travel dates to get the cheapest flight from Austin to Ontario.
Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from Austin to Ontario over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Sat, Jul 5, with one-way flights priced at just HK$913.
Compare cheap flight deals from Austin to Ontario across hundreds of airlines.
With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from Austin to Ontario. The cheapest airline for this route is Southwest Airlines.
Set up a Price Alert
By setting up a Price Alert for your journey from Austin to Ontario, you can easily keep an eye on ticket prices without having to check every day.
Don't miss out on cheap flight deals and promo codes from Austin to Ontario.
You can always find the latest offers through Trip.com Deals and Promo Codes for cheap flights. By signing up for a free membership, you'll get access to even more deals for your flights.
Book early or wait until the last minute.
It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.
Search for flights on the go.
For the best travel flight booking experience, download the Trip.com app. You can search for cheap flights from Austin to Ontario and snag some exclusive deals just for you.
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