Cheap flights from Ontario to Austin from $61
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 9/6. 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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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 cheapest month to fly to Austin?
The cheapest month to fly to Austin from Ontario is in April. Flight prices, which tend to average around $258, are often lower during this time because this is during the off-season. If you’re not able to fly to Austin in April, then September is your next best option. Flight prices from Ontario to Austin during September average around $283.
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 Saturday when prices can be found for as low as $304. 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 $384.
What is the cheapest time of day to depart on your flight to Austin?
In the afternoon is the cheapest time of day to fly from Ontario to Austin when you can find flight prices for as low as $331. Flying to Austin in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Austin are more costly at noon, with an average ticket price of $351. Departure times at noon 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 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 $321 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 $241 on momondo.
What cabin class options are available on Ontario to Austin Bergstrom flights?
There are 1 cabin classes available to choose from on Ontario to Austin Bergstrom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Ontario to Austin Bergstrom?
Frontier, American Airlines, and Southwest are the most popular carriers operating from Ontario to Austin Bergstrom
What airlines fly to Austin?
American Airlines, Delta and Southwest are the top three most popular airlines that fly to Austin from Ontario according to our data. American Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Austin. Keep in mind that there are 8 different airlines that fly to Austin on a routine basis, so you have a few additional options to choose from.
How many flights depart from Ontario to Austin on average per day?
The number of flights available between Ontario and Austin is 3 per day as of June 2025. The most frequent departure time is 1:00PM, with 76% of daily flights leaving in the afternoon.
How many flights depart from Ontario to Austin on average per week?
23 flights are operational weekly from Ontario to Austin as of June 2025. The most popular departure day for this route is Mon, with 26% of flights per week taking off on this day.
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
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 5h 04m 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 June 2025, there are 5 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 (22.80% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (12.40%), Airbus A319 (10.40%), and Airbus A320neo (8.00%).
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 46% of all bookings. The subsequent popular airlines are Frontier at 25%, American Airlines at 24%, and Delta at 3%.
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 $118 | Free Cancellation | Rating 5.9 3,290 reviews | |||
| PriceFrom $120 | Free Cancellation | Rating 8.0 7,973 reviews | |||
| PriceFrom $216 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $231 | Free Cancellation | Rating 8.0 4,278 reviews | |||
| PriceFrom $312 | Free Cancellation | Rating 7.4 8,852 reviews |
Southwest Flights From Ontario to Austin
Southwest is one of the most popular airlines flying from Ontario to Austin, operating 14 flights/week on average for this route. A good Southwest flight deal for Ontario to Austin starts from $231 round-trip, up to an average price of $356. Our users have rated Southwest at 8.0/10.
United Airlines Flights From Ontario to Austin
United Airlines is also a popular choice for this route. United Airlines flight deals for Ontario to Austin start from as low as $312 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $409. United Airlines operates 9 flights to Austin from Ontario in an average week. Users have rated it 7.4/10 across 8,852 reviews.
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.