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Cheap Flights from Ontario to Austin starting at S$ 65

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip

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

Cheapest time to fly from Ontario to Austin

We monitor flight fares to help you find the best deals effortlessly

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

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From S$ 65
Delta Air Lines
From S$ 133
Southwest Airlines
From S$ 160
United Airlines
From S$ 164
Alaska Airlines
From S$ 179
American Airlines
From S$ 357
ANA airlines

Find more flights and airlines

Alternative Routes from Ontario to Austin

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Ontario to Austin.

  • Cheapest
    Frontier Airlines
    ONT
    00:59
    19h 28m
    1 transfer
    AUS
    22:27
    Ontario International Airport - Austin-Bergstrom International Airport
    Tue, Apr 9Frontier Airlines
    S$ 65
  • Frontier Airlines
    ONT
    00:59
    19h 28m
    1 transfer
    AUS
    22:27
    Ontario International Airport - Austin-Bergstrom International Airport
    Tue, Apr 9Frontier Airlines
    S$ 65
    Find More Flights

Frequently Asked Questions

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

    Airlines adjust prices for flights from Ontario to Austin 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 is a flight from Ontario (ONT) to Austin (AUS) cost?

    According to Trip.com's data, the lowest price is around S$ 524.
  • What's the most popular airline for direct flights from Ontario (ONT) to Austin (AUS)?

    Delta Air Lines operates 2 direct flights from Ontario (ONT) to Austin (AUS).
  • How many airports in Austin?

    There are 1 airports near Austin: Austin-Bergstrom International Airport.

Find cheapest flight ticket from Ontario to Austin

Cheapest direct flight price

S$ 64

Cheapest return ticket price

S$ 205

Cheapest month

December

Peak season for travel

November