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Latest Flight Deals from Austin to Ontario

Book one-way or return flights from Austin to Ontario from as little as NZD 74. Choose from the popular airlines below and book your flight today!

  • One way
  • Round-trip
      • AUS15:55
        10h 4m
        1 stop
        ONT23:59
        Tue, May 7|Austin - Ontario|Frontier Airlines
        NZD 74NZD 115
        36% OFF
        36% OFF
        NZD 115NZD 74
      • AUS09:06
        16h 53m
        1 stop
        ONT23:59
        Wed, May 15|Austin - Ontario|Frontier Airlines
        NZD 85NZD 115
        27% OFF
        27% OFF
        NZD 115NZD 85
      • AUS09:16
        6h 8m
        1 stop
        ONT13:24
        Tue, May 21|Austin - Ontario|Frontier Airlines
        NZD 86NZD 115
        26% OFF
        26% OFF
        NZD 115NZD 86
      • AUS15:55
        10h 4m
        1 stop
        ONT23:59
        Tue, Apr 30|Austin - Ontario|Frontier Airlines
        NZD 86
        NZD 86
      • AUS09:06
        16h 53m
        1 stop
        ONT23:59
        Wed, May 1|Austin - Ontario|Frontier Airlines
        NZD 87
        NZD 87
      • AUS16:49
        7h 8m
        1 stop
        ONT21:57
        Tue, May 7|Austin - Ontario|Spirit Airlines
        NZD 87
        NZD 87
      • AUS22:58
        24h 59m
        1 stop
        ONT21:57
        Mon, May 13|Austin - Ontario|Frontier Airlines
        NZD 88
        NZD 88
      • AUS22:17
        13h 7m
        1 stop
        ONT09:24
        Thu, May 16|Austin - Ontario|Frontier Airlines
        NZD 92
        NZD 92
      • AUS22:58
        10h 5m
        1 stop
        ONT07:03
        Mon, May 6|Austin - Ontario|Frontier Airlines
        NZD 92
        NZD 92
      • AUS22:54
        10h 14m
        1 stop
        ONT07:08
        Thu, May 2|Austin - Ontario|Frontier Airlines
        NZD 93
        NZD 93
      • AUS13:00
        3h 5m
        Direct
        ONT14:00
        Sat, May 4|Austin - Ontario|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Searching for the best last minute flight from Austin to Ontario? Find one-way or return flights that are affordable and fit your itinerary.

Trip.com monitors the ticket fares of flights from Austin to Ontario. Stay updated on price trends and snag the best deals for your upcoming trip.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Airlines Flying from Austin to Ontario

View airlines operating flights from Austin to Ontario. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From NZD 74
Spirit Airlines
From NZD 87
American Airlines
From NZD 131
Allegiant Air
From NZD 146
Delta Air Lines
From NZD 172
United Airlines
From NZD 194
Southwest Airlines
From NZD 197
Alaska Airlines
From NZD 233
ANA airlines

Find more flights and airlines

Alternative Routes from Austin to Ontario

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Austin to Ontario.

  • Cheapest
    Frontier Airlines
    AUS
    15:55
    10h 4m
    1 transfer
    ONT
    23:59
    Austin–Bergstrom International Airport - Ontario International Airport
    Tue, May 7Frontier Airlines
    NZD 74
  • Frontier Airlines
    AUS
    15:55
    10h 4m
    1 transfer
    ONT
    23:59
    Austin–Bergstrom International Airport - Ontario International Airport
    Tue, May 7Frontier Airlines
    NZD 74
    Find More Flights

How do I find the cheapest flights?

  • When are flight tickets from Austin (AUS) to Ontario (ONT) the cheapest?

    Airlines adjust prices for flights from Austin to Ontario based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Austin (AUS) to Ontario (ONT) cost?

    According to Trip.com's data, the lowest price is around NZD 545.

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.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com
Flight Information from Austin to Ontario

Cheapest nonstop flight price

NZD 74

Cheapest round-trip ticket price

NZD 260

Off-season for travel

February

Peak season for travel

June

Flight distance

10,754.2km

Popular airline

United Airlines

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