App
Customer Support
GBP
Find Bookings
Trip.com
>
Cheap Flights
>
United States
>
California
>
Ontario
>
Flights from Austin to Ontario
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Flights from Austin to Ontario Starting at £32

For as little as £32, you can take your next adventure to Ontario without breaking the bank. Choose between one-way and return tickets from Austin below.

  • One way
  • Round-trip
      • Cheapest nonstop
        AUS14:55
        3h 15m
        Nonstop
        ONT16:10
        Tue, Mar 11|Austin - Ontario|Southwest Airlines
        £92£99
        7% OFF
        7% OFF
        £99£92

        Choose Southwest Airlines flights from Austin to Ontario. The one-way direct flight with Southwest Airlines departs from Austin-Bergstrom International Airport on Tue, Mar 11, arriving at Ontario International Airport. One-way Prices start from £92 including taxes and charges.

      • AUS14:55
        3h 15m
        Nonstop
        ONT16:10
        Wed, Mar 12|Austin - Ontario|Southwest Airlines
        £92£99
        7% OFF
        7% OFF
        £99£92

        Choose Southwest Airlines flights from Austin to Ontario. The one-way direct flight with Southwest Airlines departs from Austin-Bergstrom International Airport on Wed, Mar 12, arriving at Ontario International Airport. One-way Prices start from £92 including taxes and charges.

      • AUS06:10
        19h 49m
        1 stop
        ONT23:59
        Tue, Mar 4|Austin - Ontario|Frontier Airlines
        £32£99
        68% OFF
        68% OFF
        £99£32

        Choose Frontier Airlines flights from Austin to Ontario. The one-way connecting flight with Frontier Airlines departs from Austin-Bergstrom International Airport on Tue, Mar 4, arriving at Ontario International Airport. One-way Prices start from £32 including taxes and charges.

      • AUS22:51
        10h 35m
        1 stop
        ONT07:26
        Sun, Mar 9|Austin - Ontario|Frontier Airlines
        £36
        £36

        Choose Frontier Airlines flights from Austin to Ontario. The one-way connecting flight with Frontier Airlines departs from Austin-Bergstrom International Airport on Sun, Mar 9, arriving at Ontario International Airport. One-way Prices start from £36 including taxes and charges.

      • AUS17:11
        5h 5m
        1 stop
        ONT20:16
        Mon, Mar 3|Austin - Ontario|Frontier Airlines
        £38
        £38

        Choose Frontier Airlines flights from Austin to Ontario. The one-way connecting flight with Frontier Airlines departs from Austin-Bergstrom International Airport on Mon, Mar 3, arriving at Ontario International Airport. One-way Prices start from £38 including taxes and charges.

      • AUS18:34
        7h 35m
        1 stop
        ONT00:09
        Thu, Mar 6|Austin - Ontario|Frontier Airlines
        £38
        £38

        Choose Frontier Airlines flights from Austin to Ontario. The one-way connecting flight with Frontier Airlines departs from Austin-Bergstrom International Airport on Thu, Mar 6, arriving at Ontario International Airport. One-way Prices start from £38 including taxes and charges.

      • AUS18:34
        7h 35m
        1 stop
        ONT00:09
        Tue, Mar 11|Austin - Ontario|Frontier Airlines
        £38
        £38

        Choose Frontier Airlines flights from Austin to Ontario. The one-way connecting flight with Frontier Airlines departs from Austin-Bergstrom International Airport on Tue, Mar 11, arriving at Ontario International Airport. One-way Prices start from £38 including taxes and charges.

      • AUS06:10
        19h 56m
        1 stop
        ONT00:06
        Wed, Feb 19|Austin - Ontario|Frontier Airlines
        £39
        £39

        Choose Frontier Airlines flights from Austin to Ontario. The one-way connecting flight with Frontier Airlines departs from Austin-Bergstrom International Airport on Wed, Feb 19, arriving at Ontario International Airport. One-way Prices start from £39 including taxes and charges.

      • AUS17:11
        16h 15m
        1 stop
        ONT07:26
        Sun, Mar 2|Austin - Ontario|Frontier Airlines
        £39
        £39

        Choose Frontier Airlines flights from Austin to Ontario. The one-way connecting flight with Frontier Airlines departs from Austin-Bergstrom International Airport on Sun, Mar 2, arriving at Ontario International Airport. One-way Prices start from £39 including taxes and charges.

      • AUS06:10
        19h 49m
        1 stop
        ONT23:59
        Tue, Feb 25|Austin - Ontario|Frontier Airlines
        £40
        £40

        Choose Frontier Airlines flights from Austin to Ontario. The one-way connecting flight with Frontier Airlines departs from Austin-Bergstrom International Airport on Tue, Feb 25, arriving at Ontario International Airport. One-way Prices start from £40 including taxes and charges.

      • AUS01:00 pm
        3h 5m
        Nonstop
        ONT02:00 pm
        Fri, Feb 7|Austin - Ontario|Southwest Airlines
        Find More Flights
        Find More Flights

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

Austin to Los Angeles flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. F91815

    Frontier Airlines

    06:10

    AUS

    2.4h

    07:35

    DEN

    SMTWTFS
    Search

  2. F91499

    Frontier Airlines

    22:38

    DEN

    2.4h

    23:59

    ONT

    SMTWTFS

  3. F92889

    Frontier Airlines

    06:10

    AUS

    2.4h

    07:35

    DEN

    S--W--S
    Search

  4. F91261

    Frontier Airlines

    10:00

    DEN

    2.3h

    11:20

    ONT

    SMTWTFS

  5. F91815

    Frontier Airlines

    06:10

    AUS

    2.4h

    07:35

    DEN

    SMTWTFS
    Search

  6. F91261

    Frontier Airlines

    10:00

    DEN

    2.3h

    11:20

    ONT

    SMTWTFS

  7. F92889

    Frontier Airlines

    06:10

    AUS

    2.4h

    07:35

    DEN

    S--W--S
    Search

  8. F91499

    Frontier Airlines

    22:38

    DEN

    2.4h

    23:59

    ONT

    SMTWTFS

  9. F94683

    Frontier Airlines

    16:41

    AUS

    3.1h

    17:45

    LAS

    -----F-
    Search

  10. F94757

    Frontier Airlines

    10:36

    LAS

    1.1h

    11:44

    ONT

    SMTWTFS

  11. F94683

    Frontier Airlines

    16:41

    AUS

    3.1h

    17:45

    LAS

    -----F-
    Search

  12. F92231

    Frontier Airlines

    16:46

    LAS

    1.1h

    17:54

    ONT

    SMTWTFS

  13. F93645

    Frontier Airlines

    22:30

    AUS

    3.2h

    23:41

    LAS

    S--WT-S
    Search

  14. F91283

    Frontier Airlines

    08:49

    LAS

    1.1h

    09:53

    ONT

    S--WT--

  15. F93645

    Frontier Airlines

    22:30

    AUS

    3.2h

    23:41

    LAS

    S--WT-S
    Search

  16. F94757

    Frontier Airlines

    10:36

    LAS

    1.1h

    11:44

    ONT

    SMTWTFS

  17. F93645

    Frontier Airlines

    22:30

    AUS

    3.2h

    23:41

    LAS

    S--WT-S
    Search

  18. F92231

    Frontier Airlines

    16:46

    LAS

    1.1h

    17:54

    ONT

    SMTWTFS

  19. F93645

    Frontier Airlines

    22:30

    AUS

    3.2h

    23:41

    LAS

    S--WT-S
    Search

  20. F91357

    Frontier Airlines

    13:40

    LAS

    1.1h

    14:48

    ONT

    ---W---
Find more flights and airlines

Find the best time to fly from Austin to Ontario

These price trend charts carefully monitor and predict how flight prices from Austin to Ontario will change. Keep a close eye on them to understand when the best time to buy your tickets is.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

  • 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 £230.

  • What's the most popular airline for direct flights from Austin (AUS) to Ontario (ONT)?

    Delta Air Lines operates 2 direct flights from Austin (AUS) to Ontario (ONT).

How to find a cheap flight from Austin to Ontario

If you don’t know some of the key things to look out for when buying flight tickets, prices can often end up sky high or, worse, sold out! We’ve carefully compiled our six most important steps to help ensure you’re getting the best deals when planning your next journey.
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 direct flight price£32
Cheapest return ticket price£121
Off-season travel monthMarch
Peak season for travelJuly
Flight distance10,754.2km
Popular airlineAmerican Airlines

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.