$108 Find Cheap Flights from Ontario to Indiana

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 Indiana departing on 8/12. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Indiana

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Indiana, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Indiana, as well as popular online travel agencies
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Cheap Flights from Ontario to Indiana

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Indianapolis
Indianapolis1 stop$240
South Bend
South Bend1 stop$349
Fort Wayne
Fort Wayne1 stop$349
Evansville
Evansville1 stop$527
Chicago
Chicago2 stops$283
Dayton
Dayton1 stop$349
Indianapolis
Indianapolis1 stop$240
South Bend
South Bend1 stop$349
Fort Wayne
Fort Wayne1 stop$349
Evansville
Evansville1 stop$527
Chicago
Chicago2 stops$283
Dayton
Dayton1 stop$349

Book Cheap Ontario to Indiana Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Indiana 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Indiana

Sat, Aug 8 - Mon, Aug 10
Frontier Logo
10:49 am - 8:08 pm
ONT
-
IND
6h 19m
1 stop
Frontier Logo
8:53 pm - 11:50 pm
IND
-
ONT
5h 57m
1 stop
$240Frontier
Wed, Jul 15 - Wed, Aug 19
Frontier Logo
10:49 am - 8:08 pm
ONT
-
IND
6h 19m
1 stop
Frontier Logo
8:49 pm - 11:50 pm
IND
-
ONT
6h 01m
1 stop
$247Frontier
Thu, Sep 3 - Sat, Sep 5
Southwest Logo
12:50 pm - 11:20 pm
ONT
-
MDW
8h 30m
2 stops
Southwest Logo
6:00 pm - 8:10 pm
MDW
-
ONT
4h 10mnonstop
$283Southwest
Wed, Sep 2 - Sat, Sep 5
United Airlines Logo
7:00 am - 1:10 pm
ONT
-
ORD
4h 10mnonstop
United Airlines Logo
8:06 pm - 10:35 pm
ORD
-
ONT
4h 29mnonstop
$283United Airlines
Wed, Aug 26 - Thu, Aug 27
Southwest Logo
6:40 am - 5:10 pm
ONT
-
MDW
8h 30m
2 stops
Southwest Logo
8:00 am - 3:05 pm
MDW
-
ONT
9h 05m
2 stops
$285Southwest
Wed, Aug 5 - Tue, Aug 11
American Airlines Logo
12:33 pm - 10:17 pm
ONT
-
SDF
6h 44m
1 stop
American Airlines Logo
7:03 am - 11:43 am
SDF
-
ONT
7h 40m
1 stop
$287American Airlines
Wed, Sep 9 - Thu, Sep 17
Delta Logo
12:17 pm - 10:45 pm
ONT
-
MDW
8h 28m
1 stop
Delta Logo
5:11 pm - 10:26 pm
MDW
-
ONT
7h 15m
1 stop
$288Delta
Tue, Aug 4 - Tue, Aug 11
American Airlines Logo
7:15 pm - 10:35 am
ONT
-
SDF
12h 20m
2 stops
American Airlines Logo
7:03 am - 11:43 am
SDF
-
ONT
7h 40m
1 stop
$292American Airlines
Thu, Aug 27 - Tue, Sep 1
Delta Logo
6:20 am - 6:29 pm
ONT
-
ORD
10h 09m
2 stops
Delta Logo
7:48 am - 12:16 pm
ORD
-
ONT
6h 28m
1 stop
$293Delta
Tue, Jul 21 - Wed, Jul 29
United Airlines Logo
6:10 am - 12:25 pm
ONT
-
ORD
4h 15mnonstop
United Airlines Logo
8:18 pm - 10:51 pm
ORD
-
ONT
4h 33mnonstop
$294United Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Indiana flights

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

How much is a round-trip flight from Ontario to Indiana?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Indiana departing in August.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Indiana, 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 Indiana is April, when tickets cost $131 (return) on average. On the other hand, the most expensive months are January and September, when the average cost of round-trip tickets is $292 and $292 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Indiana, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Indiana, you should book around 4 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$108
Most popular time to fly with an average 7% increase in price.
Flight from Ontario to Chicago O'Hare Airport

FAQs - booking Indiana flights

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

    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 Indiana.

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

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

    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 from Ontario to Indiana with an airline and back with another airline.

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

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

Top tips for finding cheap flights to Indiana

  • Looking for a cheap flight? 25% of our users found tickets from Ontario to the following destinations at these prices or less: Chicago $263 one-way - $427 round-trip; Chicago $249 one-way - $415 round-trip

Reviews of the top 4 airlines serving from Ontario to Indiana

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Indiana. 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 Indiana? 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.
7.9
SouthwestOverall score based on 4246 reviews
8.6Crew
7.0Food
8.1Boarding
7.5Entertainment
8.0Comfort
Airline reviews

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

4.0 OkaySteven, Jun 2026
ONT - LAS
Read more Southwest reviews

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

Was fine, delayed and feels like southwest is always late

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

This was a nicer flight - not fully booked and so we were able to spread out.

I liked receiving attention from aged and well experienced flight attendants. I disliked the non-gluten-free snack but I brought my own so I was OK.

Great staff. Clean plane, but we were delayed for more than an hour due to maintenance issues and had to board another plane.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

Service was professional and quick. Premium economy seat was comfortable given the class

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Over 2.5 hour maintenance delay on first morning flight with no acknowledgement, compensation or even gesture of good will. Aircraft had overnighted at airport so issue should have been addressed prior to boarding. Over 3.5 hours before first slow and deliberate beverage service.

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Pilots were fantastic - super smooth. First Class flight attendant was very attentive. Main Cabin flight attendant should try to smooth the rough edges of her voice - very shrill / punitive. Hurt my ears just to listen to her. Recognize they have a (tough) job to do - but tone over speakers needs to be less like scolding a 5 year old.

Delayed and horrible communication and sat on flight for an hour before taking off

Two hours delay, probably one hour because they didn’t bring catering and they had to bring water in board. There a change of aircraft. But delays galore at CLT so it must be a CLT and/or AA operation issue. The 1 hr additional delays because nobody could bring 2 packs of water sooner is probably the best example of this airline operates

It wa sort of on time; the cab was left with some trash

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

The flight was on time and arrived early. The crew were friendly and helpful.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

VERY disappointed at the agent checking in my luggage. I know that the weight limit is 23 kg, a little over 50 pounds (50.71 pounds). Yet the agent kept repeating "50 pounds". So I said, the limit is 23 kg, and she had the audacity to say 'no, it is 22 kg!" Imagine my surprise. Was she ignorant or was she poorly trained? Not sure. The boarding process was pretty good. The speakers were loud enough so I still could hear them despite inconsiderate passengers continuing to speak while the announcements were going on. During the flight, the teenage girl sitting behind me kept pressing her feet to the back of my chair. I turned around several times, yet she did not get the hint. I did not make a fuss since I sense I had a bad streak that night with AA, so I just did the best I can to lean forward and not let that bother me.

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.

The takeoff was the smoothest I've ever experienced on any airline and this is the first time I've flown on frontier so this was an extremely pleasant surprise!

A lady asked to stop the flight after the tunnel pulled away and we began to depart a flight that was already hours late. The attendance respectfully stopped the the plane and had the tunnel return. After the tunnel returned the passenger claimed to have changed her mind . The tunnel was then put in reverse and the passenger remained on the plane .. They should have sent the sick passenger off the plane like initially replaced. They existed a couple off the plane prior to that situation.. So.. all and all.. it was a long and flight.. .

We understand and comply with Frontier’s bag sizes. We’ve had some problems in past while having to await other passengers who do not understand the baggage restrictions or have not prepaid and that is usually our biggest concern (others delaying us) with flying Frontier. Flying OUT of ONT, however, has always been a great experience. I’ve also noted even on delayed Frontier flights very knowledgeable pilots who manage expectations well.

Long lines, rude staff, everything that's offered you have to pay for.

The last time I flew Frontier was in the 1960s when it was a “real” airline. We flew this time because of the price & schedule. As the saying goes, you get what you pay for.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

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

The plane was on time. Boarding went fast. Smooth flight and landing. I filled out info for a frontier credit card on the flight from Indy to Orlando and have have heard nothing back. I was supposed to get all these “instant” rewards and have received nothing g.

This isna terribly run airlines. If you're one minute late, they will deny your ticket. Don't waste your time or money

Flight was delayed for more than 3 hours, crew at ONT airport was rude, and when we got to DFW the airplane had an issue landing, we had to be taxied to the terminal, and the luggage was hold until the next day.

Everything you need to know for your flight from Ontario to Indiana

Information on your arrival and departure airports