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ONT - AUS

$49 Find cheap flights from Ontario to Austin

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Austin departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 5/25
Sat 6/1

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Austin.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Austin.
In the last 7 days travelers have searched 44,979,812 times on KAYAK, and here is why:

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Cheap flight deals from Ontario to Austin (ONT-AUS)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Austin that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
10:58 pm - 9:50 pmONT-AUS
20h 52m1 stop
10:43 pm - 9:57 pmAUS-ONT
25h 14m1 stop
$159Frontier
Find Deal
Thu, May 2 - Sun, May 5
12:59 am - 8:16 amONT-AUS
5h 17m1 stop
7:48 pm - 11:59 pmAUS-ONT
6h 11m1 stop
$160Frontier
Find Deal
Sun, May 26 - Wed, May 29
8:54 pm - 8:16 amONT-AUS
9h 22m1 stop
8:23 pm - 4:40 pmAUS-ONT
22h 17m1 stop
$161Frontier
Find Deal
Fri, May 24 - Mon, May 27
1:20 pm - 9:02 pmONT-AUS
5h 42m1 stop
6:00 pm - 9:39 pmAUS-ONT
5h 39m1 stop
$258Delta
Find Deal
Wed, May 15 - Sat, May 18
11:59 pm - 8:20 amONT-AUS
6h 21m1 stop
7:03 pm - 10:29 pmAUS-ONT
5h 26m1 stop
$288American Airlines
Find Deal
Wed, May 15 - Fri, May 17
2:45 pm - 12:25 amONT-AUS
7h 40m1 stop
7:30 pm - 8:20 pmAUS-ONT
2h 50mnonstop
$297Southwest
Find Deal
Sun, Jun 2 - Wed, Jun 5
11:50 am - 12:05 amONT-AUS
10h 15m1 stop
5:40 am - 9:10 amAUS-ONT
5h 30m1 stop
$306Southwest
Find Deal
Sun, Jun 2 - Wed, Jun 5
12:53 pm - 9:05 pmONT-AUS
6h 12m2 stops
8:15 pm - 11:56 pmAUS-ONT
5h 41m1 stop
$313American Airlines
Find Deal
Sat, May 25 - Tue, May 28
6:50 am - 5:24 pmONT-AUS
8h 34m1 stop
6:00 pm - 11:43 pmAUS-ONT
7h 43m1 stop
$328Delta
Find Deal
Wed, May 15 - Fri, May 17
7:00 am - 5:44 pmONT-AUS
8h 44m1 stop
1:38 pm - 9:28 pmAUS-ONT
9h 50m1 stop
$372Alaska Airlines
Find Deal
Tue, Apr 30 - Wed, May 1

Flights from Ontario to Austin - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to Austin to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Austin?

The average price of all flights from Ontario to Austin clicked on KAYAK for each day over the last 12 months.
For Ontario to Austin, Monday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Austin back to Ontario, the best deals are generally found on Wednesday, with Sunday being the most expensive.

What is the cheapest month to fly from Ontario to Austin?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Austin, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Ontario to Austin is January, where tickets cost $138 on average. On the other hand, the most expensive months are March and June, where the average cost of tickets is $271 and $270 respectively.

How far in advance should I book a flight from Ontario to Austin?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Austin, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ontario to Austin, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 41 days before departure.

Which airlines provide the cheapest flights from Ontario to Austin?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $49. KAYAK users also found Ontario to Austin round-trip flights on Frontier from $159 and on Delta from $258.

How many flights are there between Ontario and Austin per day?

Each day, there are between 1 and 2 nonstop flights that take off from Ontario and land in Austin, with an average flight time of 2h 48m. The most common departure time is 7:00 am and most flights take off in the morning. Each week, there are 8 flights. The most frequent day of departure is Sunday, when 25% of all weekly flights depart. The fewest flights depart on a Saturday.

How long does a flight from Ontario to Austin take?

A direct flight to Austin will take on average 2h 45m to travel the 1,193 miles flying distance from Ontario.

What’s the earliest departure time from Ontario to Austin?

Early birds can take the earliest flight from Ontario at 7:15 am and will be landing in Austin at 12:05 pm.

What’s the latest departure time from Ontario to Austin?

If you prefer to fly at night, the latest flight from Ontario to Austin jets off at 2:45 pm and lands at 7:25 pm.

Good to know

Low season

January

High season

May

Cheapest flight

$49
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Ontario to Austin

When to book flights from Ontario to Austin

Are your dates flexible? Find out the best times to travel from Ontario to Austin based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Austin

  • Is there a lounge at ONT?

    If you have a significant wait for your flight from Ontario to Austin, you may want to head over to the Aspire Lounge. For about $37 per adult, you can enjoy food and beverage services as well as have access to charging stations and free Wi-Fi. The lounge in Terminal 4 is open from around 5 am to about 6 am daily, and the one in Terminal 2 is open from about 5 am, and closing times depend on the day of the week.

  • How do I get to downtown Austin from the airport?

    Your public transport options from AUS to downtown include MetroBus 20, which you can catch from just outside the lower level of the Barbara Jordan terminal for about $2.50. There is a taxi stand outside the car rental center with fares starting around $13.80, and you can also hail a ride from services like Lyft.

  • Where can I ask for information at the airport in Austin?

    If you need assistance at the airport or need to find out about your transportation options to Austin, there are information desks located by the baggage claim area near Doors B4 and B5.

  • Does Austin International offer increased accessibility facilities and services?

    Passengers who need additional assistance will find accessible facilities conveniently located across Austin International airport, including parking, restrooms, and elevators. There are videophones available, as well as raised lettering and braille signs. Walkways also have contrasting surfaces for visually impaired travelers, and there are pet relief areas for service animals.

  • What is the cheapest flight from Ontario to Austin?

    In the last 3 days, the lowest price for a flight from Ontario to Austin was $49 for a one-way ticket and $159 for a round-trip.

  • Do I need a passport to fly between Ontario and Austin?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Ontario to Austin?

    We unfortunately don’t have that data for this specific route.

  • On which days can I fly direct from Ontario to Austin?

    There are nonstop flights from Ontario to Austin on a daily basis.

  • Which is the best airline for flights from Ontario to Austin, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Austin are Delta and United Airlines. With an average price for the route of $271 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $395 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Ontario to Austin?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Austin.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Austin?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Austin from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Austin?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Austin with an airline and back to Ontario with another airline. Booking your flights between Ontario and AUS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Austin?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Austin from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from ONT to Austin

  • Ontario International Airport (ONT) serves the Ontario and San Bernadino regions and is about 2 miles from downtown Ontario. Austin–Bergstrom International Airport (AUS) serves the Greater Austin area and is about 5 miles from the city center. Austin International is a focus city for Allegiant Air.
  • While there are non-stop options from Orlando to Austin, you may get a better deal or match your schedule with routes that have one or more stops. This could be Delta stopping in Salt Lake City or United stopping in Denver and Houston.
  • Public transport to ONT includes the Route 61 bus from downtown Ontario to Terminal Way 2 or 4, just a short walk to the entrance. Expect a fare of about $2 a person. Service runs from around 4 am to about 9:30 pm during weekdays and on a shorter schedule on weekends. Or you could grab a cab or use a ride-sharing app like Lyft.
  • If you would rather drive and park your car at Ontario International, there are two daily parking lots. Lot 3 is within walking distance to either Terminal 2 or 4 and costs about $16 a day. Lot 5 is a little further away on John Bangs Drive for $13 a day, and there is a shuttle service to the terminals.
  • Most airlines servicing the flights from Ontario to Austin provide onboard entertainment of some type. You can check each flight's details on KAYAK to see what is available. For example, American Airlines offers free streaming services for your mobile device on flights with onboard Wi-Fi.
See more tips

Prefer to fly non-stop from Ontario to Austin?

Find which airlines fly direct from Ontario to Austin Bergstrom, which days they fly and book direct flights.

Nonstop departures

Ontario to Austin Bergstrom

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Nonstop returns

Austin Bergstrom to Ontario

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights
See more direct flights

Top 5 airlines serving from Ontario to Austin

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Austin. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Austin? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10975 reviews
7.4food
8.2boarding
8.0entertainment
8.6crew
7.9comfort
Airline reviews

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

8.0 ExcellentAnonymous, Apr 2024ATL - SAT
Read more about Delta reviews

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Food service was bare-bone. Better bot to have any at all rather than hand out premade coffees and cookies to random few passengers.

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great!! I haven’t had a bad experience with them.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

The customer service was excellent! Check-in, baggage check-in, boarding, the flight went very smooth.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

It was delayed several hours which delayed our connection in Denver. Not happy.

Ok, but comfort was lacking as the seats were way to small

All good except paid for wifi that did not work

Some of these FA’s need attitude check. Snarky bitches

The plane boarded and deplaned twice before the crew timed out. Flight was 7 hours late departing. Horrible experience!

Got automatically assigned middle seats unless you fork out extra money for a seat assignment, not impressed.

Gossipy flight attendants talked the whole flight about bar hopping and dating.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

Apart from the delay due to unforeseen circumstances. The leg from sjc to dfw was fine. It was the leg from dfw to orf that we encountered issues mainly due to the flight attendant crew not being friendly. We had two small children and we needed some assistance to warm up milk so the baby would sleep. The crew just didn’t get it and made things very difficult. One made a remark that the baby’s dirty diaper smell was a “gift” to the plane in a rude way. Normally I’d brush that off as a funny comment if the rest of the trip the attendants were helpful or understanding of the difficulty we faced. But that wasn’t the case. We were met with rudeness on the second leg. Whereas on the first leg the crew were so nice and helpful.

Best price with timings that suited us. The flight was punctual.

Flight was delayed and missed connecting flight. Did not give warning about delay until we showed up at the airport. Not good.

It was wonderful upgrading to first. Plane was so cold thou. Crew was great. Wish there was a food option in first for such a long flight. Doesnt matter the time of day. Chintzy.

Not sure about entertainment as I didn't use any, soay e there should be an NA option on this survey. Otherwise everything was just as it should be. Of course I wish planes were more comfortable and had seats that would tilt back further.

1st flight was delayed because of broken radio, missed connection but they got us on very next plane 1 hr later. Return flights were both delayed by 1 hr each. Crews were fine. Planes ok, but had to check carry ons.

I love to be able to connect my own devices to the entertainment system. It works great!

It left on time and arrived a few minutes early. The whole process of checking in, seating (got my upgrade thankfully!), and the meals (superb multi-grain healthy salad) were great. It arrived on time (actually a few minutes early). American continue to keep up its promise of customer service. I love being part of the American traveller family.

Seats suck, not enough room, overcrowded planes, hectic situation all together.

On time and fast. Overall it was a pleasant experience.

3 hour delay was brutal though not Spirit Airlines fault. the control tower would not let us take off because of weather

Beware of all the extras. Nickel and dimed. Everything was extra. It turns a $90 fare in to a $400 fair quite easily.

It would have been nice to have been on the flight

Delayed several times. Flight was to arrive at midnight and it arrive at 3 am. A 3 hour delay is already bad but one that has you arriving in the wee hour is just disruptive and overall unacceptable. The complete lack of restitution is a joke in keeping with Spirit’s reputation of ranking bottom-low in the pecking order.

It wasn’t as horrible as I would have expected, however, to not provide water and change so much for bags is a ripoff to say the least.

Cancelled my flight , currently stuck in Houston and will likely miss my cruise

The flight attendants were very personable, extremely friendly, and had a very good feeling of the energy around them not to mention they’re very funny and engaging. What made up for the discomfort of the seats and the fact that the plane sat for a long time on the Turmac. Not sure if the pilot was new, but the landing was very rough sort of like I was at a magic mountain theme park ride that was built in 1959

Unfortunately not great, my flight was canceled with no notice given. I attempted to reach out to spirit airlines and have yet to receive any correspondence. I then had to book a new flight at two times the cost of the original.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Terrible. Seats are bad and the baggage policy is inconsistent

Better than I expected but I did pay for a seat and carry on bags ahead of time.

I hope to avoid flying with them in the future. First flight got cancelled then got stuck with a 13 hour layover in Denver. The process was long and frustrating to many people.

Flight was delayed on the runway for 40 minutes the crew did not even offer even water to passengers to compensate for the flight delayed. The flight was delayed due to aircraft mechanical issues. Worst customer service ever

Everything was good, 20/30 minutes late waiting on a crew member. It’s hard to keep employees. Or serious employees I know. I remember one flight from Houston of Frontiers was almost 18 hours late. And another 4 hours late very poor. But I would rather be late and safe than the on the news. Thank you.

The flight was delayed and I had to cancel because I would have missed my connection and there were no other flights for the next two days. They also lost my bag!!

Book cheap flights from Ontario to Austin

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Austin found on KAYAK in the last 72 hours.
5/14Tue
1 stopFrontier
5h 39mONT-AUS
$49
5/14Tue
1 stopFrontier
5h 39mONT-AUS
$50
5/14Tue
1 stopFrontier
5h 39mONT-AUS
$52
5/10Fri
1 stop
8h 55mONT-AUS
$54
5/24Fri
1 stop
8h 50mONT-AUS
$76
7/23Tue
1 stopUnited Airlines
7h 21mONT-AUS
$159
7/27Sat
1 stopUnited Airlines
8h 16mONT-AUS
$183
5/9Thu
2 stopsAmerican Airlines
7h 50mONT-AUS
$312
5/23Thu
1 stopAmerican Airlines
5h 21mONT-AUS
$331
6/16Sun
1 stopDelta
5h 52mONT-AUS
$361

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Last minute flights from Ontario to Austin

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to Austin that are departing in the next 10 days.
4/29Mon
multi-stopFrontier
11h 56mONT-AUS
5/2Thu
multi-stopFrontier
10h 14mAUS-ONT
$156
4/29Mon
multi-stopFrontier
11h 56mONT-AUS
5/3Fri
multi-stopFrontier
15h 46mAUS-ONT
$215
4/30Tue
multi-stopAlaska Airlines
8h 44mONT-AUS
5/1Wed
multi-stopAlaska Airlines
9h 50mAUS-ONT
$372
4/30Tue
multi-stopDelta
8h 10mONT-AUS
5/1Wed
multi-stopDelta
10h 15mAUS-ONT
$491
4/28Sun
multi-stopAlaska Airlines
8h 44mONT-AUS
5/7Tue
multi-stopAlaska Airlines
9h 50mAUS-ONT
$498
4/28Sun
multi-stopDelta
5h 48mONT-AUS
5/8Wed
multi-stopDelta
6h 13mAUS-ONT
$506
4/29Mon
multi-stopUnited Airlines
5h 37mONT-AUS
5/1Wed
multi-stopUnited Airlines
7h 10mAUS-ONT
$540
4/30Tue
multi-stopUnited Airlines
14h 08mONT-AUS
5/1Wed
multi-stopUnited Airlines
7h 10mAUS-ONT
$551
4/30Tue
multi-stopAmerican Airlines
10h 06mONT-AUS
5/1Wed
multi-stopAmerican Airlines
5h 37mAUS-ONT
$590
4/30Tue
multi-stopAmerican Airlines
8h 10mONT-AUS
5/1Wed
multi-stopAmerican Airlines
8h 50mAUS-ONT
$637

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Ontario - Austin Flights

Departure:

Ontario (ONT)United States

Destination:

Austin (AUS)United States

Return flight deals:

Austin - Ontario

Cabin classes:

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