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AUS - ONT

$72 Find cheap flights from Austin to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Austin to Ontario departing on 5/29. 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
Σαβ 6/8
Σαβ 6/15

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Austin to Ontario.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Austin to Ontario.
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Austin to Ontario 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
9:16 am - 1:24 pmAUS-ONT
6h 08m1 stop
12:59 am - 8:15 amONT-AUS
5h 16m1 stop
$140Frontier
Find Deal
Τρι, Ιουν 4 - Δευ, Ιουν 10
7:48 pm - 11:59 pmAUS-ONT
6h 11m1 stop
12:59 am - 8:16 amONT-AUS
5h 17m1 stop
$142Frontier
Find Deal
Τετ, Μαϊ 29 - Δευ, Ιουν 3
7:48 pm - 11:59 pmAUS-ONT
6h 11m1 stop
1:26 pm - 9:18 pmONT-AUS
5h 52m1 stop
$144Frontier
Find Deal
Τετ, Μαϊ 29 - Πεμ, Μαϊ 30
6:30 pm - 11:43 pmAUS-ONT
7h 13m1 stop
5:00 pm - 12:34 amONT-AUS
5h 34m1 stop
$248Delta
Find Deal
Τρι, Ιουλ 30 - Τρι, Αυγ 6
2:25 pm - 10:15 pmAUS-ONT
9h 50m1 stop
12:45 pm - 10:18 pmONT-AUS
7h 33m1 stop
$268Delta
Find Deal
Τρι, Ιουλ 30 - Παρ, Αυγ 9
11:30 am - 6:22 pmAUS-ONT
8h 52m1 stop
7:31 am - 5:50 pmONT-AUS
8h 19m1 stop
$274American Airlines
Find Deal
Κυρ, Μαϊ 26 - Παρ, Μαϊ 31
8:00 am - 12:15 pmAUS-ONT
6h 15m1 stop
5:20 am - 1:28 pmONT-AUS
6h 08m1 stop
$328United Airlines
Find Deal
Τρι, Ιουλ 30 - Τετ, Αυγ 7
6:00 am - 12:15 pmAUS-ONT
8h 15m1 stop
6:00 am - 3:21 pmONT-AUS
7h 21m1 stop
$348United Airlines
Find Deal
Σαβ, Αυγ 3 - Σαβ, Αυγ 10
9:14 am - 7:37 pmAUS-ONT
12h 23m1 stop
7:55 pm - 1:58 pmONT-AUS
16h 03m2 stops
Παρ, Αυγ 9 - Δευ, Αυγ 12
9:14 am - 4:37 pmAUS-ONT
9h 23m1 stop
7:55 pm - 1:58 pmONT-AUS
16h 03m2 stops
Δευ, Αυγ 5 - Παρ, Αυγ 9

Flights from Austin to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from Austin to Ontario 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 Austin to Ontario?

The average price of all flights from Austin to Ontario clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Ontario on a Wednesday and more expensive on a Sunday. On your return trip to Austin, you should consider flying back on a Monday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Austin to Ontario, 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 Austin to Ontario is October, where tickets cost $232 on average. On the other hand, the most expensive months are December and November, where the average cost of tickets is $512 and $419 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Austin to Ontario, 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 Austin to Ontario, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 29 days before departure.

Which airlines provide the cheapest flights from Austin to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Austin to Ontario found on KAYAK was with Frontier for $72. Frontier proposed a round-trip connection from $140 and Delta from $248.

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

Each day, there are 2 nonstop flights that take off from Austin and land in Ontario, with an average flight time of 2h 56m. The most common departure time is 3:00 pm and most flights take off in the afternoon. Each week, there are 14 flights and there are the same amount of flights each day 2.

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

Early birds can take the earliest flight from Austin at 3:20 pm and will be landing in Ontario at 4:10 pm.

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

If you prefer to fly at night, the latest flight from Austin to Ontario jets off at 7:30 pm and lands at 8:20 pm.

Good to know

Low season

January

High season

December

Cheapest flight

$72
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 45% increase in price.
Flight from Austin to Ontario

When to book flights from Austin to Ontario

Are your dates flexible? Find out the best times to travel from Austin to Ontario 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 Austin to Ontario

  • What is the cheapest flight from Austin to Ontario?

    In the last 3 days, the lowest price for a flight from Austin to Ontario was $72 for a one-way ticket and $140 for a round-trip.

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

    No, a passport isn't needed to fly from Austin to Ontario. However, local authorities might ask for an official ID.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Austin to Ontario are Delta and United Airlines. With an average price for the route of $278 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 $416 and an overall rating of 7.4.

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

    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 Austin to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Austin 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 Austin to Ontario?

    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 Ontario with an airline and back to Austin with another airline. Booking your flights between Austin and ONT 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 Austin to Ontario?

    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 Ontario from Austin up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Austin to Ontario?

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

Nonstop departures

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

Nonstop returns

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
See more direct flights

Top 5 airlines serving from Austin to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Austin to Ontario. 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 Austin to Ontario? 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 10789 reviews
7.9Comfort
8.0Entertainment
8.2Boarding
7.4Food
8.6Crew
Airline reviews

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

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

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

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

I love the free wifi and headrest screens. I would consider Delta even more because of this but the seats aren't so great. The snacks aren't very good in my opinion. I bought a Bloody Mary and that was great! So just be comfortable with better snacks and the airline world will be yours.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Crew was not friendly when I went to request a seat change.

Really impressive staff at airport and on plane, especially given how busy it was

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

I arrived to the airport 2 hours before my American Airlines flight was scheduled to take off. I have TSA pre-check. The airport was crazy packed when I arrived. After momentarily standing in the pre-check line, the TSA agent said that I am not pre-check. Of course I said that I am because I entered my KTN number on all my traveling sites and programs. I had to get out of line and go back to the AA counter to discover that American Airlines did not add my KTN to my boarding pass. I had to call TSA to find out my number, then have AA enter it onto my boarding pass. The emblem would not load onto my boarding pass. By this time, I decided to use my Clear in order to get through TSA but the line was ridiculous long. By the time I made through TSA, I missed my 11:08am flight and was re-booked for the 5:30pm. This is after the AA employee told me I should have gotten to the airport early. AA use to be a dependable airline not I use them only if I have too.

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Flight was delayed two hours due to crew-scheduling issues.

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

They charged me 212.00 for a heavy check in bag at the gate. The pricing and process was so confusing - as if it was designed to purposefully gouge customers who need to board plane. That experience combined with the outrageous price charged will prevent me from ever flying Spirit again. And I’ll be sure to tell the story to anyone who cares to hear.

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

Horrendous. Wish they would have just shot me in the leg instead.

So bad. The check in process was laborious and the check in agent didn't seem to know how to manage the process efficiently and was confused about how to check in my son's sports equipment. The baggage fees were outrageous and so expensive. $90 for a carry on bag? And $200 additional for 2 check ins. The security lines were insanely long and the terminal was not very nice in the Spirit area. $5 for a water on board. It was my first and last time flying Spirit - I tried to save $ by flying them due to the accommodating schedule but I should have paid for Southwest, because it would've actually ended up less expensive due to the free bags with Southwest. There were no charging ports on the airplane, no wifi and really uncomfortable seating. The flight crew were great though, courteous and efficient in their boarding. Flight was delayed 1 hour, but we made up 15 minutes in flight.

My experience was better than expected. What I did find not so great was the seats. Very little room, they did not recline and the tray table was the size of a post card. There was no food to try, just standard snacks that you had to pay for and I don’t know of any entertainment. I would fly again even though everything was an upcharge. Flight was on time with little disturbance

thy don't even ofer water we have to buy it for $4.49 and paid for our cary on bags $100 each we never will fly in this company again.

Super cool and laid back, three lovely ladies. Couldn’t ask for better service.

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

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

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

The boarding time. I was in Section 1 the lady in charge just let people in section 3 without see us. Make a line , I have to step out and ask her. We were in the line and she just take my ticket and that’s it, so if I don’t ask her she could leave us at the end! We paid more for that privilege and. She doesn’t care….

See my previous comment which is mostly about our flight from Phoenix to SFO

The check in at the airport was awful. Told I need to pay for a bag. The item was taken at screening. I went back to get my $ back and they gave me a coupon with a QR code that doesn’t work. Worst costumer service ever!!!!!

4 hour delay because they used our aircraft to fly a different segment (per the captain)

Lost baggage on my connecting flight. 24 hours later, still no update on my bags.

I had to cancel within 1hour of the reservation an they put you through hell to . no live customer service desk. I'm handy caped and they make it almost impossible to cancel. They are steeling my money. You should not have that airline on your site. Contact me and I will give you all info. Of what the are doing to me just notable treatment they are set up like that to take people

Book cheap flights from Austin to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Austin to Ontario found on KAYAK in the last 72 hours.
5/29Τετ
1 stopFrontier
6h 11mAUS-ONT
$72
6/12Τετ
1 stopFrontier
15h 29mAUS-ONT
$76
6/6Πεμ
1 stopFrontier
11h 52mAUS-ONT
$78
6/1Σαβ
1 stopAmerican Airlines
6h 40mAUS-ONT
$144
5/26Κυρ
1 stopDelta
8h 04mAUS-ONT
$197
8/6Τρι
2 stopsUnited Airlines
18h 27mAUS-ONT
$228
5/15Τετ
1 stopUnited Airlines
6h 24mAUS-ONT
$244
6/12Τετ
2 stopsAlaska Airlines
18h 43mAUS-ONT
$255
5/29Τετ
2 stopsAlaska Airlines
18h 43mAUS-ONT
$260
7/19Παρ
2 stopsAmerican Airlines
7h 22mAUS-ONT
$341

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Last minute flights from Austin to Ontario

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 Austin to Ontario that are departing in the next 10 days.
5/13Δευ
multi-stopFrontier
10h 05mAUS-ONT
5/23Πεμ
multi-stopFrontier
16h 47mONT-AUS
$224
5/13Δευ
multi-stopFrontier
10h 05mAUS-ONT
5/22Τετ
multi-stopFrontier
15h 41mONT-AUS
$225
5/13Δευ
multi-stopDelta
7h 50mAUS-ONT
5/15Τετ
multi-stopDelta
8h 34mONT-AUS
$516
5/14Τρι
multi-stopDelta
6h 13mAUS-ONT
5/16Πεμ
multi-stopDelta
7h 52mONT-AUS
$537
5/11Σαβ
multi-stopAlaska Airlines
9h 50mAUS-ONT
5/18Σαβ
multi-stopAlaska Airlines
7h 34mONT-AUS
$597
5/13Δευ
multi-stopUnited Airlines
6h 24mAUS-ONT
5/17Παρ
multi-stopUnited Airlines
23h 50mONT-AUS
$628
5/14Τρι
multi-stopUnited Airlines
6h 24mAUS-ONT
5/17Παρ
multi-stopUnited Airlines
15h 50mONT-AUS
$631
5/10Παρ
multi-stopAmerican Airlines
5h 41mAUS-ONT
5/12Κυρ
multi-stopAmerican Airlines
6h 12mONT-AUS
$693
5/12Κυρ
multi-stopAmerican Airlines
5h 38mAUS-ONT
5/14Τρι
multi-stopAmerican Airlines
7h 44mONT-AUS
$851
5/13Δευ
multi-stopAlaska Airlines
15h 34mAUS-ONT
5/16Πεμ
multi-stopAlaska Airlines
7h 59mONT-AUS
$875

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Austin - Ontario Flights

Departure:

Austin (undefined)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Austin

Cabin classes: