$80+ Cheap flights from Ontario to Austin (ONT - AUS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — AUS
Nov 22 — Nov 291
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Austin with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Ontario to Austin Bergstrom are usually found in January or August, booked 34 days in advance, depart on a Tuesday or Wednesday and return on a Monday
Cheap flight deals from Ontario to Austin
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to AustinExplore the most affordable flight options available from Ontario to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.
Explore the most affordable flight options available from Ontario to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.
This Booking.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/242:01 pm -
1 stop6h 03m
Tue 12/17:34 pm -
1 stop24h 37m
Deal found 10/21![Frontier logo]()
$169
This Booking.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:00 am -
1 stop8h 39m
Tue 12/88:52 pm -
1 stop23h 39m
Deal found 10/21![Frontier logo]()
$174
This Orbitz deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2010:55 am -
1 stop9h 09m
Tue 11/2410:59 pm -
1 stop10h 21m
Deal found 10/22![Frontier logo]()
$175
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:00 pm -
1 stop26h 39m
Thu 12/36:51 pm -
1 stop7h 26m
Deal found 10/21![Frontier logo]()
$180
This Expedia deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2210:48 pm -
1 stop18h 54m
Mon 1/48:27 pm -
1 stop13h 38m
Deal found 10/21![Frontier logo]()
$181
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:52 am -
1 stop5h 34m
Sat 11/141:17 pm -
1 stop5h 04m
Deal found 10/21![Frontier logo]()
$184
This Expedia deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:00 am -
1 stop8h 39m
Sat 12/56:31 pm -
1 stop5h 46m
Deal found 10/20![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:30 am -
1 stop10h 56m
Wed 11/188:21 pm -
1 stop5h 30m
Deal found 10/20![Frontier logo]()
$187
This Booking.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:52 am -
1 stop5h 34m
Fri 11/138:21 pm -
1 stop16h 21m
Deal found 10/23![Frontier logo]()
$192
This Booking.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:01 pm -
1 stop6h 03m
Sun 11/2210:59 pm -
1 stop17h 52m
Deal found 10/21![Frontier logo]()
$194
This CheapOair deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:35 pm -
1 stop13h 47m
Tue 11/178:21 pm -
1 stop16h 14m
Deal found 10/20![Frontier logo]()
$196
Best flights from Ontario to AustinDiscover carefully curated flight deals from Ontario to Austin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.
Discover carefully curated flight deals from Ontario to Austin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:50 am -
Nonstop2h 45m
Sun 11/155:15 am -
1 stop4h 45m
Deal found 10/21![Southwest logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:00 am -
1 stop10h 06m
Tue 12/87:15 am -
2 stops11h 41m
Deal found 10/22![Alaska Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:45 am -
1 stop7h 38m
Tue 12/812:15 pm -
2 stops10h 56m
Deal found 10/20![United Airlines logo]()
$360
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/69:15 am -
2 stops8h 45m
Sat 1/910:50 am -
2 stops7h 25m
Deal found 10/20![Southwest logo]()
$331
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:40 am -
1 stop7h 00m
Wed 11/255:55 pm -
Nonstop3h 05m
Deal found 10/20![Southwest logo]()
$336
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:32 pm -
1 stop5h 26m
Sun 11/156:27 am -
1 stop8h 02m
Deal found 10/22![United Airlines logo]()
$454
This Alaska Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:02 pm -
1 stop9h 12m
Mon 11/167:15 am -
2 stops10h 09m
Deal found 10/22![Alaska Airlines logo]()
$455
This Southwest deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/304:40 pm -
1 stop7h 10m
Sun 1/35:55 pm -
Nonstop3h 05m
Deal found 10/18![Southwest logo]()
$451
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/157:50 am -
Nonstop2h 45m
Sat 12/197:50 pm -
Nonstop3h 05m
Deal found 10/21![Southwest logo]()
$455
Last-minute flights from Ontario to AustinDiscover last-minute flight deals from Ontario to Austin. Data last updated October 23, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Austin. Data last updated October 23, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:52 am -
1 stop5h 34m
Fri 11/138:21 pm -
1 stop16h 21m
Deal found 10/23![Frontier logo]()
$192
This Orbitz deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:30 am -
1 stop10h 56m
Sun 11/151:08 pm -
1 stop24h 08m
Deal found 10/21![Frontier logo]()
$198
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:52 am -
1 stop5h 34m
Sat 11/141:17 pm -
1 stop5h 04m
Deal found 10/21![Frontier logo]()
$184
This Frontier deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:30 am -
1 stop10h 56m
Wed 1/138:02 pm -
1 stop6h 03m
Deal found 10/20![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:30 am -
1 stop10h 56m
Wed 11/188:21 pm -
1 stop5h 30m
Deal found 10/20![Frontier logo]()
$187
This CheapOair deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:35 pm -
1 stop13h 47m
Tue 11/178:21 pm -
1 stop16h 14m
Deal found 10/20![Frontier logo]()
$196
This Frontier deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1411:52 am -
1 stop5h 34m
Thu 11/191:08 pm -
1 stop5h 13m
Deal found 10/19![Frontier logo]()
$199
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:52 am -
1 stop5h 34m
Tue 11/2410:59 pm -
1 stop10h 21m
Deal found 10/22![Frontier logo]()
$180
This Orbitz deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2010:55 am -
1 stop9h 09m
Tue 11/2410:59 pm -
1 stop10h 21m
Deal found 10/22![Frontier logo]()
$175
This Booking.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:01 pm -
1 stop6h 03m
Sun 11/2210:59 pm -
1 stop17h 52m
Deal found 10/21![Frontier logo]()
$194
This Booking.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/242:01 pm -
1 stop6h 03m
Tue 12/17:34 pm -
1 stop24h 37m
Deal found 10/21![Frontier logo]()
$169
One-way flights from Ontario to AustinSearch for one-way flight options from Ontario to Austin. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
Search for one-way flight options from Ontario to Austin. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
This Super.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/242:01 pm -
1 stop6h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$80
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1511:00 am -
1 stop7h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:00 am -
1 stop8h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$86
This Super.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:52 am -
1 stop5h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1411:52 am -
1 stop5h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1910:51 pm -
1 stop18h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/298:56 am -
1 stop8h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$97
This Booking.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:00 am -
1 stop8h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$98
This Booking.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:35 pm -
1 stop23h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/611:00 am -
1 stop22h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$102
This Super.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:01 pm -
1 stop26h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$103
This Super.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:47 pm -
1 stop21h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$104
Find flight deals from Ontario to Austin
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Austin (AUS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $169 (Booking.com) |
One-way from | $80 (Super.com) |
Popular in | March |
Cheapest in | January |
Average price | $403 |
Good round-trip deal | $332 or less |
Good one-way deal | $255 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Austin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 23, 2026.
Use the filters below to find and compare flights from Ontario to Austin that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Wed 12/2
1:30 pm-9:15 pm
2 stops5h 45m
Austin Bergstrom
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$129
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Thu 12/24
1:05 pm-10:13 pm
1 stop7h 08m
Austin Bergstrom
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$148
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Mon 12/14
6:00 am-2:08 pm
1 stop6h 08m
Austin Bergstrom
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$178
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Mon 1/11
6:37 pm-8:37 am
2 stops12h 00m
Austin Bergstrom
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$183
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Thu 1/7
11:20 am-11:14 pm
2 stops9h 54m
Austin Bergstrom
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$183
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Sun 1/10
6:37 pm-8:37 am
2 stops12h 00m
Austin Bergstrom
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$195
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Tue 12/29
6:00 am-1:49 pm
1 stop5h 49m
Austin Bergstrom
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$196
Quickest round-trip
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Thu 12/24
7:50 am-12:35 pm
Nonstop2h 45m
Austin Bergstrom
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$199
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Thu 11/12
12:02 pm-11:14 pm
1 stop9h 12m
Austin Bergstrom
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$239
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Tue 11/24
12:30 pm-5:15 pm
Nonstop2h 45m
Austin Bergstrom
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$239
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Ontario to Austin
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Austin in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Austin flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Austin flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Austin flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Austin flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Austin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Ontario to Austin
Have a flexible travel schedule? Discover the best time to fly to Austin from Ontario with our price prediction graph.
ONT-AUS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Austin
Prices
More
How far ahead should I book a flight from Ontario to Austin?
Booking 33 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Austin. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Ontario to Austin?
Currently, January is the cheapest month in which you can book a flight from Ontario to Austin (average of $200). Flying from Ontario to Austin in March is currently the most expensive (average of $452). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ONT to AUS?
Find hourly flight availability from Ontario to Austin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 23, 2026.
When flying from Ontario to Austin, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
What’s the top layover airport for flights from Ontario to Austin?
Share of 1-stop round-trip flights from Ontario to Austin chosen by Cheapflights users in the past 12 months, using the same layover each way.
Phoenix (PHX) – chosen by Cheapflights users on 50% of 1-stop itineraries from Ontario to Austin on Cheapflights.
What’s the cheapest layover airport for flights from Ontario to Austin?
Average round-trip fare for 1-stop flights from Ontario to Austin, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $190.
What’s the fastest layover option from Ontario to Austin?
Shortest average travel time for 1-stop one-way flights from Ontario to Austin, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Phoenix (PHX) have the shortest average one-way travel time for 1-stop routes: 4h 26m.
Which airport typically offers the quickest layover for flights from Ontario to Austin?
Average layover duration for 1-stop one-way flights from Ontario to Austin, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Phoenix (PHX) offer the fastest connection on this route, with an average layover time of 0h 57m.
Reviews of airlines servicing Austin
Get insights into the airlines that provide service to Austin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Austin. Reviews last updated October 23, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Ontario to Austin by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Comfort
8.0
Entertainment
7.4
Food
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Comfort
8.0
Entertainment
7.4
Food
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Comfort
8.0
Entertainment
7.4
Food
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Comfort
8.0
Entertainment
7.4
Food
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Comfort
8.0
Entertainment
7.4
Food
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Comfort
8.0
Entertainment
7.4
Food
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Related info for your journey
Find useful and relevant information for your journey from Ontario to Austin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Austin?
Book flights to Austin if you plan to visit one of these locationsCedar Park
Round Rock
San Marcos
Bastrop
Fredericksburg
Pflugerville
Georgetown
Dripping Springs
Seguin
Browse thousands of different options on Cheapflights for your next trip
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Other flights to Austin
Explore flights to Austin departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 23, 2026.
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Ontario and Austin flights
Browse other Ontario and Austin flight options. Last updated on October 23, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on October 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Ontario to Austin
Discover the top 6 airlines that operate flights from Ontario to Austin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$276 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$150 | Average$265 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$242 | Average$407 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$246 | Average$494 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$246 | Average$448 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$256 | Average$337 | FlexibilityNo cancel fee | On-time69% |