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Cheap flights from Austin to Ontario from $78

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 7/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Austin to Los Angeles

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Austin to Los Angeles.
Frontier Logo
1:53 pm - 8:49 pmAUS-ONT
8h 56m1 stop
Frontier Logo
6:00 am - 3:44 pmONT-AUS
7h 44m1 stop
$178Frontier
Find Deal
Fri, May 30 - Sat, May 31
Frontier Logo
7:12 am - 11:08 pmAUS-ONT
17h 56m1 stop
Frontier Logo
12:59 am - 11:20 pmONT-AUS
20h 21m1 stop
$181Frontier
Find Deal
Wed, May 7 - Fri, May 9
Delta Logo
2:45 pm - 10:29 pmAUS-ONT
9h 44m1 stop
Delta Logo
1:00 pm - 9:06 pmONT-AUS
6h 06m1 stop
$237Delta
Find Deal
Wed, Jul 9 - Mon, Jul 14
Delta Logo
7:00 pm - 11:42 pmAUS-ONT
6h 42m1 stop
Delta Logo
6:00 am - 1:34 pmONT-AUS
5h 34m1 stop
$247Delta
Find Deal
Wed, Jun 4 - Thu, Jun 5
Southwest Logo
3:40 pm - 8:50 pmAUS-ONT
7h 10m1 stop
Southwest Logo
3:15 pm - 12:15 amONT-AUS
7h 00m1 stop
$255Southwest
Find Deal
Thu, Jul 3 - Mon, Jul 7
Southwest Logo
6:05 pm - 10:05 pmAUS-ONT
6h 00m1 stop
Southwest Logo
8:35 am - 6:30 pmONT-AUS
7h 55m2 stops
$256Southwest
Find Deal
Tue, Jul 15 - Tue, Aug 12
United Airlines Logo
11:20 am - 5:40 pmAUS-ONT
8h 20m1 stop
United Airlines Logo
6:39 pm - 5:40 amONT-AUS
9h 01m1 stop
$297United Airlines
Find Deal
Fri, Jul 4 - Fri, Jul 11
United Airlines Logo
7:10 am - 3:09 pmAUS-ONT
9h 59m2 stops
United Airlines Logo
4:15 pm - 11:59 pmONT-AUS
5h 44m1 stop
$302United Airlines
Find Deal
Tue, May 13 - Thu, May 15
American Airlines Logo
5:00 am - 10:04 amAUS-ONT
7h 04m1 stop
American Airlines Logo
11:59 pm - 8:54 amONT-AUS
6h 55m1 stop
$308American Airlines
Find Deal
Thu, Jul 3 - Mon, Jul 7
American Airlines Logo
2:53 pm - 6:08 pmAUS-ONT
5h 15m1 stop
American Airlines Logo
12:59 am - 9:34 amONT-AUS
6h 35m1 stop
$318American Airlines
Find Deal
Wed, Jul 30 - Sun, Aug 3

Southwest flights from Austin to Ontario

Our best Southwest deals on Austin to Ontario flight tickets
Southwest
Jul 3
AUS3:40 pmAustin Bergstrom
7h 10m
1 stop
ONT8:50 pmOntario
Jul 7
ONT3:15 pmOntario
7h 00m
1 stop
AUS12:15 amAustin Bergstrom
Southwest
Jul 15
AUS6:05 pmAustin Bergstrom
6h 00m
1 stop
ONT10:05 pmOntario
Aug 12
ONT8:35 amOntario
7h 55m
2 stops
AUS6:30 pmAustin Bergstrom
Southwest
Jul 15
AUS6:05 pmAustin Bergstrom
6h 00m
1 stop
ONT10:05 pmOntario
Aug 12
ONT12:45 pmOntario
2h 50m
AUS5:35 pmAustin Bergstrom

Frontier flights from Austin to Ontario

Our best Frontier deals on Austin to Ontario flight tickets
Frontier
Apr 26
AUS4:41 pmAustin Bergstrom
6h 42m
1 stop
ONT9:23 pmOntario
Apr 29
ONT12:10 pmOntario
9h 08m
1 stop
AUS11:18 pmAustin Bergstrom
Frontier
Apr 29
AUS4:41 pmAustin Bergstrom
19h 12m
1 stop
ONT9:53 amOntario
May 2
ONT12:59 amOntario
20h 21m
1 stop
AUS11:20 pmAustin Bergstrom
Frontier
May 7
AUS7:12 amAustin Bergstrom
17h 56m
1 stop
ONT11:08 pmOntario
May 9
ONT12:59 amOntario
20h 21m
1 stop
AUS11:20 pmAustin Bergstrom

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 $311. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Austin to Ontario for around $483.

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 $411 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 $337 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 $228 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.

How have Austin to Ontario flight prices changed over time?

As of April 2025, prices for Austin to Ontario flights are approximately 70% more expensive when compared to flights at the same time last year.

When to book flights from Austin to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Austin to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Best Price Found

$78

Fastest flight time

2h 55m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from Austin in the past 72 hours is $78. The best round-trip flight deal from Austin to Ontario found on momondo in the last 72 hours is $178.
The fastest flight from Austin to Ontario takes 2h 55m
Direct flights go from Austin to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)

  • 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 2h 55m.

  • 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?

  • 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?

  • What is the most popular airline from Austin to Ontario?


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
FrontierPriceFrom $108Free CancellationRating
5.9
3,283 reviews
Search Frontier flights
American AirlinesPriceFrom $191Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $230Free CancellationRating
8.0
4,287 reviews
Search Southwest flights
DeltaPriceFrom $256Free CancellationRating
8.0
7,920 reviews
Search Delta flights
United AirlinesPriceFrom $295Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
  • Southwest Flights From Austin to Ontario

    Across 5 Southwest flights from Austin to Ontario this week, the average price was $397, with the best Southwest deals starting from $230 round-trip. 4,287 users have rated Southwest on momondo, with an average score of 8.0/10.


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.


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