Cheap flights from Ontario to Austin from $82
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Austin departing on 12/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Sat 12/12
6:10 am-10:55 am
Nonstop2h 45m
Austin Bergstrom
Tue 12/15
11:45 am-12:50 pm
Nonstop3h 05m
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Thu 12/10
12:50 pm-9:25 pm
1 stop6h 35m
Austin Bergstrom
Tue 12/15
11:45 am-12:50 pm
Nonstop3h 05m
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Sat 11/7
11:52 am-7:26 pm
1 stop5h 34m
Austin Bergstrom
Mon 11/9
12:38 pm-4:21 pm
1 stop5h 43m
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Wed 11/11
6:30 am-7:26 pm
1 stop10h 56m
Austin Bergstrom
Tue 11/17
8:21 pm-11:51 pm
1 stop5h 30m
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Sat 11/7
6:00 am-6:12 pm
1 stop10h 12m
Austin Bergstrom
Mon 11/9
12:38 pm-4:21 pm
1 stop5h 43m
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Sat 11/7
6:00 am-6:12 pm
1 stop10h 12m
Austin Bergstrom
Mon 11/9
12:38 pm-4:21 pm
1 stop5h 43m
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Sat 11/7
1:23 pm-7:49 pm
1 stop4h 26m
Austin Bergstrom
Mon 11/9
6:00 am-8:39 am
1 stop4h 39m
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Tue 11/10
9:50 am-5:20 pm
1 stop5h 30m
Austin Bergstrom
Sun 11/15
6:00 am-8:39 am
1 stop4h 39m
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Wed 11/18
1:15 pm-9:41 pm
1 stop6h 26m
Austin Bergstrom
Thu 11/26
2:29 pm-6:30 pm
1 stop6h 01m
OntarioAustin
ONT Ontario - AUS Austin Bergstrom
ONTAUS
Ontario
Sat 11/7
1:35 pm-9:42 pm
1 stop6h 07m
Austin Bergstrom
Mon 11/9
6:09 pm-11:49 pm
1 stop7h 40m
See travel insights to Austin from
How to get the cheapest flight ticket from Ontario to Austin
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Ontario and Austin?
Prices are currently low for flights on this route.
Typical prices usually range from $317 to $476.The lowest price recently found on this route was $164.
What is the cheapest month to fly to Austin?
The cheapest month to fly to Austin from Ontario is in January. Flight prices, which tend to average around $190, are often lower during this time because this is during the off-season. If you’re not able to fly to Austin in January, then August is your next best option. Flight prices from Ontario to Austin during August average around $298.
What is the cheapest day to depart on your flight to Austin?
The cheapest day to depart on your flight to Austin is on a Thursday when prices can be found for as low as $368. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to Austin for around $465.
What is the cheapest time of day to depart on your flight to Austin?
In the evening is the cheapest time of day to fly from Ontario to Austin when you can find flight prices for as low as $365. Flying to Austin in the evening is an ideal time because this is during off-peak travel hours. Flights to Austin are more costly in the morning, with an average ticket price of $396. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Ontario to Austin Bergstrom flight route?
Fly from Ontario to Austin Bergstrom for the best Ontario - Austin Bergstrom flight prices
How far in advance should I book a flight from Ontario to Austin?
You are more likely to see cheaper flights to Austin from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Austin for around $366 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Austin from Ontario for as low as $252 on momondo.
What cabin class options are available on Ontario to Austin flights?
There is only 1 cabin class available to choose from on Ontario to Austin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Ontario to Austin flights?
No. A direct flight is the cheapest option for a flight between Ontario to Austin.
How have Ontario to Austin flight prices changed over time?
As of October 2026, prices for Ontario to Austin flights are approximately 14% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Ontario to Austin Bergstrom?
Southwest, Delta, and Alaska Airlines are the most popular carriers operating from Ontario to Austin Bergstrom
What airlines fly to Austin?
Southwest, Delta and American Airlines are the top three most popular airlines that fly to Austin from Ontario according to our data. Southwest is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Austin. Keep in mind that there are 7 different airlines that fly to Austin on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Ontario and Austin?
Denver (DEN) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Ontario to Austin?
Flights via Phoenix (PHX) offer the lowest average round-trip price of $387.
Which layover airport has the shortest travel time from Ontario to Austin?
Flights connecting via Phoenix (PHX) have the shortest average one-way travel time: 4h 55m.
Which layover airport has the shortest connection time from Ontario to Austin?
Dallas (DFW) has the shortest average layover time for this route: 0h 53m.
When to book flights from Ontario to Austin
Cheap Ontario to Austin (ONT to AUS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ontario to Austin
Frequently asked questions about flying from Ontario to Austin
How far is Ontario to Austin Bergstrom by plane?
Ontario and Austin Bergstrom are 1190.2 mi apart from one another. Typically, this will take 2h 40m by plane in normal conditions.
When did momondo last update prices for flights from Ontario Airport to Austin Bergstrom Airport?
Prices for flights from Ontario Airport to Austin Bergstrom Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Austin Bergstrom Airport?
As of October 2026, there are 6 operators available to choose from for flights from Ontario Airport to Austin Bergstrom Airport.
How old do you have to be to fly from Ontario Airport to Austin Bergstrom Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Austin Bergstrom Airport.
What documentation or ID do you need to fly to Austin Bergstrom Airport?
The required travel and health documents for your Austin Bergstrom Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Austin Bergstrom Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Ontario to Austin?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ontario to Austin is Boeing 737 MAX 8 (26.67% of total bookings). The next most popular plane models are Boeing 737-800 (15.33%), Airbus A321-100/200 (6.67%), and Boeing 737 MAX 9 (6.00%).
What is the most popular airline from Ontario to Austin?
momondo data reveals that the most frequently booked airline on the route from Ontario to Austin is Southwest, representing 54% of all bookings. The subsequent popular airlines are Frontier at 22%, American Airlines at 14%, and Delta at 4%.
Best airlines flying from Ontario to Austin
Compare and see reviews for airlines that fly from Ontario to Austin with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $138 | Free Cancellation | Rating 7.8 8,646 reviews | |||
| PriceFrom $141 | Free Cancellation | Rating 5.6 2,551 reviews | |||
| PriceFrom $242 | Free Cancellation | Rating 7.0 12,146 reviews | |||
| PriceFrom $246 | Free Cancellation | Rating 7.1 3,048 reviews | |||
| PriceFrom $246 | Free Cancellation | Rating 7.9 4,224 reviews | |||
| PriceFrom $256 | Free Cancellation | Rating 7.4 10,319 reviews |
Southwest Flights From Ontario to Austin
Southwest is one of the most popular airlines flying from Ontario to Austin, operating 2 flights/week on average for this route. A good Southwest flight deal for Ontario to Austin starts from $246 round-trip, up to an average price of $454. Our users have rated Southwest at 7.9/10.
Traveling to a place near Austin?
Book flights to Austin if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Ontario to Austin?
It is quick and easy to find Ontario to Austin flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Austin that suits you.
Can I find flights from Ontario to Austin with flexible booking policies on momondo?
Flights from Ontario to Austin with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Ontario to Austin?
Once you have performed a search for Ontario to Austin flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Ontario to Austin right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Ontario to Austin flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.