Cheap flights from Austin, TX to Ontario, CA
Flights starting at $45. Choose between American Airlines, Frontier Airlines, or United Airlines to find the best price.
Make your travel wishlist, we'll do the rest
Hidden deals
Kiwi-Code uncovers prices airlines don't want you to see.
Effortless booking
Use our flexible filters to tailor your search.
Travel hacking
Look out for the travel hack star icon for even cheaper fares.
Tips to know when travelling to Ontario
Cheapest one-way trip | $45 |
---|---|
Cheapest round-trip | $91 |
Average round-trip | $165 |
Includes rare itinerary | Travel hack |
Most popular airline | American Airlines |
Search by stops
Search by carrier
Search by price
Search by departure date
One-way trips
Updated:

Receive exclusive deals by email
By subscribing you agree to receive offers according to the conditions described in our Privacy Policy.
Travelers usually depart from Austin–Bergstrom International, Austin, TX - Greyhound Station, Austin, TX Train Station, Austin, TX - Downtown Bus stop, or Austin-South Congress when they travel from Austin to Ontario. Book your trip to arrive at Ontario International, Ontario Bus Stop, Ontario, CA station, or Montclair (Ontario). The most popular airlines for this route are American Airlines, Frontier Airlines, United Airlines, Spirit Airlines, and Alaska Airlines. Austin and Ontario have 225 direct flights per week.
Check-in for a flight from Austin to Ontario
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
American Airlines | AAL | AA | No | No |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from Austin
- Flights from Austin to Las Vegas
- Flights from Austin to Denver
- Flights from Austin to Orlando
- Flights from Austin to Washington, D.C.
- Flights from Austin to San Francisco
- Flights from Austin to San Diego
- Flights from Austin to Chicago
- Flights from Austin to Philadelphia
- Flights from Austin to Seattle
- Flights from Austin to Salt Lake City
- Flights from Austin to Los Angeles
- Flights from Austin to Paris
- Flights from Austin to London
- Flights from Austin to Minneapolis
- Flights from Austin to Atlanta
- Flights from Austin to New Orleans
- Flights from Austin to Cincinnati
- Flights from Austin to New York
- Flights from Austin to Detroit
- Flights from Austin to Santa Ana
Flights to Ontario
- Flights from Denver to Ontario
- Flights from Orlando to Ontario
- Flights from Atlanta to Ontario
- Flights from Sacramento to Ontario
- Flights from Seattle to Ontario
- Flights from San Francisco to Ontario
- Flights from Washington, D.C. to Ontario
- Flights from San Jose to Ontario
- Flights from San Antonio to Ontario
- Flights from Raleigh to Ontario
- Flights from Phoenix to Ontario
- Flights from Charlotte to Ontario
- Flights from Portland to Ontario
- Flights from Detroit to Ontario
- Flights from Philadelphia to Ontario
- Flights from Las Vegas to Ontario
- Flights from Oakland to Ontario
- Flights from Nashville to Ontario
- Flights from Chicago to Ontario
- Flights from Fort Lauderdale to Ontario
Popular routes
- Flights from Riga to London
- Flights from Dubai to Mumbai
- Flights from Philadelphia to London
- Flights from Austin to Rome
- Flights from Chiang Mai to Siem Reap
- Flights from Denver to Las Vegas
- Flights from Quito to Bogotá
- Flights from New York to Orlando
- Flights from Cincinnati to Salt Lake City
- Flights from Phoenix to San Antonio
- Flights from Austin to Las Vegas
- Flights from Boston to Atlanta
- Flights from Phoenix to Omaha