Cheap flights from Austin to Ontario from $49
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Austin to Ontario departing on 3/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Austin to Los Angeles
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Frontier flights from Austin to Ontario
Our best Frontier deals on Austin to Ontario flight tickets
American Airlines flights from Austin to Ontario
Our best American Airlines deals on Austin to Ontario flight tickets
See travel insights to Los Angeles from
How to get the cheapest flight ticket from Austin to Ontario
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 Ontario?
In general, September is the cheapest month to fly from Austin to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $265. If you aren’t able to travel during the month of September, then book flights to Ontario from Austin during January instead. Flights to Ontario in January, while not as cheap as those in September, still average around $283.
What is the cheapest day to depart on your flight to Ontario?
The cheapest day to depart on your flight to Ontario is on a Tuesday when prices can be found for as low as $309. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Austin to Ontario for around $424.
What is the cheapest time of day to depart on your flight to Ontario?
In the morning is the cheapest time of day to fly from Austin to Ontario when you can find flight prices for as low as $327. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $379 on average. Flights to Ontario from Austin at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Austin Bergstrom to Ontario flight route?
Fly from Austin Bergstrom to Ontario for the best Austin Bergstrom - Ontario flight prices
How far in advance should I book a flight to Ontario?
You are more likely to see cheaper flights to Ontario from Austin when booking 6 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $336 when searching 6 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Austin for as low as $221 on momondo.
What cabin class options are available on Austin Bergstrom to Ontario flights?
There are 1 cabin classes available to choose from on Austin Bergstrom to Ontario 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 Austin Bergstrom to Ontario?
Frontier, American Airlines, and Southwest are the most popular carriers operating from Austin Bergstrom to Ontario
What airlines fly to Ontario?
American Airlines, Delta and Spirit Airlines are the top three most popular airlines that fly to Ontario from Austin according to our data. American Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.
How many flights depart from Austin to Ontario on average per week?
As of February 2025, 4 flights take off from Austin and land in Ontario each week. The most common flight departure day for this route is Mon, with 25% of weekly flights taking off on this day.
When to book flights from Austin to Ontario
Cheap Austin to Ontario (AUS to ONT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Austin to Ontario
How far is Austin Bergstrom to Ontario by plane?
There are 1190.2 mi between Austin Bergstrom and Ontario. A reasonable flight in good conditions will take 3h 10m.
When did momondo last update prices for flights from Austin Bergstrom Airport to Ontario Airport?
Prices for flights from Austin Bergstrom Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Austin Bergstrom Airport to Ontario Airport?
As of February 2025, there are 5 operators available to choose from for flights from Austin Bergstrom Airport to Ontario Airport.
How old do you have to be to fly from Austin Bergstrom Airport to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Austin Bergstrom Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Austin to Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Austin to Ontario is Boeing 737 MAX 8 (48.00% of total bookings). The next most popular plane models are Boeing 737-700 Passenger/BBJ1 (winglets) (12.00%), Boeing 737-800 Passenger/BBJ2 (winglets) (12.00%), and Boeing 737-800 (10.00%).
What is the most popular airline from Austin to Ontario?
Based on momondo bookings for flights between Austin and Ontario, the leading airline is American Airlines, making up 49% of the total bookings. Other popular airlines include Frontier with 27%, Southwest with 17%, and Delta with 4%.
Best airlines flying from Austin to Ontario
Compare and see reviews for airlines that fly from Austin to Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $108 | Free Cancellation | Rating 6.0 3,355 reviews | |||
| PriceFrom $191 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $211 | Free Cancellation | Rating 8.0 8,219 reviews | |||
| PriceFrom $230 | Free Cancellation | Rating 8.1 4,411 reviews | |||
| PriceFrom $295 | Free Cancellation | Rating 7.4 8,765 reviews |
Southwest Flights From Austin to Ontario
Across 4 Southwest flights from Austin to Ontario this week, the average price was $421, with the best Southwest deals starting from $230 round-trip. 4,411 users have rated Southwest on momondo, with an average score of 8.1/10.
Why use momondo?
Why should I use momondo to find a flight deal from Austin to Ontario?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Austin to Ontario. momondo saves you time and could save you money on your trip.
Can I find flights from Austin to Ontario with flexible booking policies on momondo?
Yes. All flights to Ontario from Austin on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Austin to Ontario?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Austin.
I’m not ready to book a flight from Austin to Ontario right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Austin to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.