Cheap flights from Austin to Ontario (AUS - ONT) from $69

This is the cheapest one-way flight price, found on 5/25. Prices may vary by date and flight preferences.
AUS — ONT
May 30 — Jun 61

The best prices from Austin Bergstrom to Ontario are usually found in January or December, booked 30 days in advance, depart on a Wednesday or Saturday and return on a Monday

How to find the cheapest flight from Austin (AUS) to Ontario (ONT)

All the information you need to plan the best AUS to ONT flight in 2023: compare Austin to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.

Popular in

July

Cheapest in

January

Round-trip from

$217

One-way from

$168
High demand for flights, 27% potential price rise
Best time to find cheap flights, 37% potential price drop
From Austin Bergstrom to Ontario
One-way flight from Austin Bergstrom to Ontario

AUS - ONT

Price

$217 - $468

ONT

Temperature

53.6 - 78.8 °F

ONT

Rainfall

0.1 - 3.4 inches

Cheap flights from Austin to Ontario in May, June 2023

The best prices found for AUS to ONT flights for May, June
Listed are some of the best fares we've found on flights departing from Austin to Ontario in 2023. For more flight deals, be sure to check back very soon.

Austin to Ontario 2023 flight deals

Cheap flights to Ontario from Austin found for this year
Listed are some of the best fares we've found on flights departing from Austin to Ontario in 2023. For more flight deals, be sure to check back very soon.

Cheap Undisclosed Carrier flights from Austin to Ontario

Take a look at some of the lowest-priced Undisclosed Carrier flights heading from Austin to Ontario. Come back soon if you're not finding the exact deal you're looking for.

Cheap Frontier flights from Austin to Ontario

Take a gander at the lowest prices we've found on Frontier flights from Austin to Ontario. Check back soon if you're not seeing flights that suit your needs.

Non-stop flights to Ontario from Austin

Save time with Austin to Ontario direct flight deals
For a quicker trip, book one of these direct flights from Austin to Ontario. Those looking to potentially save on 1 or 2-stop flights from Austin to Ontario should utilize the search form at the the top of the page.

Last minute flights from Austin to Ontario

Late deals on return flights to Ontario from Austin, departing today and this week
Users seeking a last-minute flight from Austin to Ontario should consider booking one of these fares. Users should be sure to double check the price, date, and time of their last-minute flight.

One-way flights to Ontario from Austin

The cheapest one-way flights from Austin to Ontario
Take a look at some of the best available options we've come across on one-way flights from Austin to Ontario. Those needing a return flight from Austin to Ontario can use the search form above.

Find flights from Austin to Ontario within your budget

Use the slider to find flights from Austin to Ontario that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$151 - $309

Route

Depart

Return

Price

Austin BergstromOntario

AUS - ONT

AUSONT

Austin Bergstrom

Thu 6/8

1 stop17h 50m

Ontario

Mon 6/12

1 stop17h 04m

Austin BergstromOntario

AUS - ONT

AUSONT

Austin Bergstrom

Sun 6/11

1 stop17h 56m

Ontario

Wed 6/21

1 stop17h 08m

Austin BergstromOntario

AUS - ONT

AUSONT

Austin Bergstrom

Thu 7/13

2 stops23h 41m

Ontario

Mon 7/17

2 stops15h 04m

Austin BergstromOntario

AUS - ONT

AUSONT

Austin Bergstrom

Fri 11/3

1 stop12h 23m

Ontario

Sun 11/5

2 stops12h 32m

Austin BergstromOntario

AUS - ONT

AUSONT

Austin Bergstrom

Thu 6/8

2 stops14h 51m

Ontario

Mon 6/12

1 stop17h 04m

Austin BergstromOntario

AUS - ONT

AUSONT

Austin Bergstrom

Thu 7/13

1 stop10h 42m

Ontario

Tue 7/18

1 stop15h 33m

Austin BergstromOntario

AUS - ONT

AUSONT

Austin Bergstrom

Fri 11/3

1 stop25h 16m

Ontario

Mon 11/6

1 stop12h 47m

Austin BergstromOntario

AUS - ONT

AUSONT

Austin Bergstrom

Tue 6/13

1 stop6h 21m

Ontario

Wed 6/21

1 stop5h 43m

Austin BergstromOntario

AUS - ONT

AUSONT

Austin Bergstrom

Thu 9/7

1 stop5h 54m

Ontario

Thu 9/7

1 stop5h 42m

Flights are sorted by cheapest first

Deals found on 5/23

Reviews of Airlines Servicing Ontario

To help decide which airline to fly from Austin to Ontario, see what other customers have to say about Undisclosed Carrier, Frontier and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
1,375 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

The line at TSA took me 2.5-3 hours to get through and I was behind on my flight time by 20 minutes. I was told some flights would be delayed and they would wait but when I arrived the flight had already taken off. I showed up on time and even then 2 and a half hours was not enough time to make my flight. I had to rent a car and drive from Vegas to San Diego at 8:00pm. I just hoped the airport would have notified their passengers a lot better.

Alaska Airlines
8.0
Very good
1,375 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

The line at TSA took me 2.5-3 hours to get through and I was behind on my flight time by 20 minutes. I was told some flights would be delayed and they would wait but when I arrived the flight had already taken off. I showed up on time and even then 2 and a half hours was not enough time to make my flight. I had to rent a car and drive from Vegas to San Diego at 8:00pm. I just hoped the airport would have notified their passengers a lot better.

Delta
8.0
Very good
2,341 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

The line at TSA took me 2.5-3 hours to get through and I was behind on my flight time by 20 minutes. I was told some flights would be delayed and they would wait but when I arrived the flight had already taken off. I showed up on time and even then 2 and a half hours was not enough time to make my flight. I had to rent a car and drive from Vegas to San Diego at 8:00pm. I just hoped the airport would have notified their passengers a lot better.

United Airlines
7.6
Good
1,484 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

The line at TSA took me 2.5-3 hours to get through and I was behind on my flight time by 20 minutes. I was told some flights would be delayed and they would wait but when I arrived the flight had already taken off. I showed up on time and even then 2 and a half hours was not enough time to make my flight. I had to rent a car and drive from Vegas to San Diego at 8:00pm. I just hoped the airport would have notified their passengers a lot better.

American Airlines
7.4
Good
2,147 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

The line at TSA took me 2.5-3 hours to get through and I was behind on my flight time by 20 minutes. I was told some flights would be delayed and they would wait but when I arrived the flight had already taken off. I showed up on time and even then 2 and a half hours was not enough time to make my flight. I had to rent a car and drive from Vegas to San Diego at 8:00pm. I just hoped the airport would have notified their passengers a lot better.

Frontier
5.9
Fair
643 reviews
Alaska Airlines
8.0
Very good
1,375 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.1

Boarding

8.3

Food

7.2

Reviews

1 / 10

The line at TSA took me 2.5-3 hours to get through and I was behind on my flight time by 20 minutes. I was told some flights would be delayed and they would wait but when I arrived the flight had already taken off. I showed up on time and even then 2 and a half hours was not enough time to make my flight. I had to rent a car and drive from Vegas to San Diego at 8:00pm. I just hoped the airport would have notified their passengers a lot better.

Related info for your journey

Useful info, stats and facts about Austin to Ontario flights.

Alternative routes for Austin to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Austin to Ontario

The chart below displays the airlines Cheapflights users traveling from Austin to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Alaska AirlinesCheapest$93Average$439FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
FrontierCheapest$105Average$194FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Allegiant AirCheapest$106Average$236FlexibilityNo cancel feeOn-time88%COVID-19 safety
Search Allegiant Air flights
Spirit AirlinesCheapest$134Average$198FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
DeltaCheapest$148Average$312FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
United AirlinesCheapest$151Average$374FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$217Average$415FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from Austin to Ontario

See what time of day planes typically take off from Austin to Ontario
0%of flight departuresEarly morningMidnight to 6 am
100%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Austin to Ontario

See how many times per day planes take to the skies headed from Austin to Ontario
Sunday3daily flights
Monday2daily flights
Tuesday2daily flights
Wednesday2daily flights
Thursday2daily flights
Friday2daily flights
Saturday2daily flights
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