ONT - CVG

$122 Find Cheap Flights from Ontario to Cincinnati

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 Cincinnati departing on 8/31. 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 Cincinnati

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Cincinnati, 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 Cincinnati, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$243
Typical prices: $278-$372
Frontier
Thu 8/13Thu 8/13
ONT - CVG • 1 stop
Cheapest one-way
$122
Typical prices: $125-$161
Frontier
Mon 8/31
ONT - CVG • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Ontario and Cincinnati. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $238 (round-trip)
Shortest trip • 6h 25m (one-way)
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When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 22% compared to booking last minute.
Insights
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When to travel
Cheapest • 21% price drop
Most popular
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Cincinnati!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Cincinnati (ONT-CVG)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Cincinnati 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 Cincinnati

Thu, Aug 13 - Thu, Aug 13
Frontier Logo
8:17 am - 6:22 pm
ONT
-
CVG
7h 05m
1 stop
Frontier Logo
8:34 pm - 11:50 pm
CVG
-
ONT
6h 16m
1 stop
$243Frontier
Tue, Aug 11 - Wed, Aug 19
Frontier Logo
6:00 am - 7:29 pm
ONT
-
CVG
10h 29m
1 stop
Frontier Logo
8:30 pm - 11:50 pm
CVG
-
ONT
6h 20m
1 stop
$248Frontier
Thu, Aug 6 - Mon, Aug 10
Frontier Logo
8:17 am - 6:22 pm
ONT
-
CVG
7h 05m
1 stop
Frontier Logo
9:27 pm - 8:03 am
CVG
-
ONT
13h 36m
1 stop
$256Frontier
Wed, Jul 29 - Tue, Aug 18
Frontier Logo
6:00 am - 7:31 pm
ONT
-
CVG
10h 31m
1 stop
Frontier Logo
8:30 pm - 11:50 pm
CVG
-
ONT
6h 20m
1 stop
$258Frontier
Thu, Aug 13 - Thu, Aug 13
Frontier Logo
8:17 am - 6:22 pm
ONT
-
CVG
7h 05m
1 stop
Frontier Logo
8:34 pm - 11:50 pm
CVG
-
ONT
6h 16m
1 stop
$259Frontier
Wed, Jul 29 - Wed, Aug 5
Frontier Logo
3:40 pm - 8:25 pm
ONT
-
CVG
25h 45m
1 stop
Frontier Logo
8:34 pm - 11:50 pm
CVG
-
ONT
6h 16m
1 stop
$261Frontier
Mon, Aug 10 - Thu, Aug 13
Frontier Logo
6:00 am - 7:29 pm
ONT
-
CVG
10h 29m
1 stop
Frontier Logo
8:34 pm - 11:50 pm
CVG
-
ONT
6h 16m
1 stop
$264Frontier
Sat, Aug 8 - Tue, Aug 11
Frontier Logo
6:00 am - 7:29 pm
ONT
-
CVG
10h 29m
1 stop
Frontier Logo
8:34 pm - 10:04 am
CVG
-
ONT
16h 30m
1 stop
$268Frontier
Sat, Aug 8 - Mon, Aug 10
Frontier Logo
6:00 am - 7:29 pm
ONT
-
CVG
10h 29m
1 stop
Frontier Logo
9:27 pm - 3:14 pm
CVG
-
ONT
20h 47m
1 stop
$271Frontier
Thu, Sep 24 - Mon, Sep 28
Frontier Logo
9:12 pm - 8:21 pm
ONT
-
CVG
20h 09m
1 stop
Frontier Logo
9:30 pm - 1:57 pm
CVG
-
ONT
19h 27m
1 stop
$274Frontier
Booking Insights

KAYAK's insights & trends for Ontario to Cincinnati flights

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

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 Cincinnati departing in August.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Cincinnati, 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 Cincinnati is October, where tickets cost $325 (return) on average. On the other hand, the most expensive months are February and July, where the average cost of round-trip tickets is $512 and $496 respectively.

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

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 Cincinnati, 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 Cincinnati, you should book around 2 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$122
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Ontario to Cincinnati

When to book flights from Ontario to Cincinnati

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

  • What is the cheapest flight from Ontario to Cincinnati?

    In the last 5 days, the lowest price for a flight from Ontario to Cincinnati was $122 for a one-way ticket and $243 for a round-trip.

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

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

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

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

  • Which airline alliances offer flights from Ontario to Cincinnati?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Cincinnati, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Cincinnati, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Ontario to Cincinnati are Southwest and Delta. With an average price for the route of $469 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $422 and an overall rating of 7.8.

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

    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 Cincinnati.

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

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

    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 Cincinnati with an airline and back to Ontario with another airline. Booking your flights between Ontario and CVG 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 Cincinnati?

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

Reviews of the top 5 airlines serving from Ontario to Cincinnati

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Cincinnati. 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 Cincinnati? 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
7.0Food
8.6Crew
7.5Entertainment
8.0Comfort
8.1Boarding
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.

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Other than a bit of a delay, everything was good. Again, the boarding process and picking seats is the only thing I don't enjoy.

Short flight with plenty of open seats. Drinks and snacks were still provided even on such a short flight. <1 hr

I had a wonderful flight, but the only thing that annoyed me was how crowded TSA was. I still believe airports and all planes work together to bunch everyone together to drive up cost.

My experience with Southwest as a whole was good but coming out of Cancun to Chicago it was terrible. Not only was it a language barrier with customer service we stood there to ask questions and they act like they didn't even see you. So the first come approach is not all that great anymore.

Always a great experience. Crew is great at communicating things during flight

very disappointed by plane having no power outlets for our electronics

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.

I kept getting h notifications that the flight was delayed. At the airport it was only 2 mins delay. Very confusing. No WiFi on the plan. Snacks very salty. No alternative

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

The WiFi was horrific. I fly delta often and love their (usually reliable and free) WiFi. On this flight it was intermittent and when it did connect was extremely slow. I couldn’t get any work done while I was on the flight which was extremely frustrating. I was also in the exit row seat where there is now immediate seat in front of you, so while the leg room was nice, I couldn’t even watch the TV when the internet wasn’t working. Finally, for the last 20 mins of the flight, the announcement indicator came on the TV screens and took them over, even though no announcement was being made. Really disappointed.

The gate agent was most helpful in getting me on to fly standby. I greatly appreciate it.

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

The WiFi has been awful on my last few Delta Air Lines flights.

Great - This was the last flight before hurricane closures and did a quick turnaround to get the plane heading north. Much appreciated.

Was unsure of this flight due to high winds in CVG from Hurricane Helene. Crew did a great job of getting us to CVG safely.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Aircraft very cramped. Check-in was great with an agent helping us. Food was almost non-existent. Pre-flight went well once I got the app reloaded on my phone since we don’t fly much anymore.

My only real complaint was how much turbulence there was-and that probably can't be avoided. I felt really sick getting off the plane. But boarding was super easy, the flight attendants were friendly, the bathroom was clean. Everything else about the flight was perfectly fine. Thanks!

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

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

Really hard landing... as in slammed into the runway then hit the brakes really hard ...

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

United is today and old, the planes, the staff, the business processes. Yet they expect premium prices for a less than average flight experience. I should have remembered to stay away from them and will remember to stay away from them in the future since I'm traveling a lot again. In a nutshell, they suck eggs.

The flight was clean and on schedule, but connections could have been better

Seat horribly lacking in lumbar support. Bluetooth earphone connection Jair wouldn’t work. Food options were quite tasty and staff was professional and efficient as well as welcoming.

You can’t checking with no carry on bag, the entertainment was awesome and the crew very friendly and polite🫶

Plane temperature was so hot that everyone on the plane was sweating. Departure gates changed 3 times in the hour before the flight. Internet service was so poor in the terminal that updates weren't always being received.

Another uncoordinated American experience. Always surprises me at DFW for them of all places. Have to take this flight as there are no other good time options. We knew from the start that something was wrong, but the pilot wouldn't tell us. I just watched my Kayak app grow the delay by 10 minutes as it went to 3.5 hours. They were uncoordinated with maintenance (as maintenance, when finally arriving, knew within 15 minutes the plane wasn't going. No 'sorry' or 'this is what is going on' comment. The pilot seemed unfazed / didn't care about the process we were going through.

The business steward was absolutely amazing! Smiles and kindness! Wish all AA flights are like this one!

As previously stated the delay I experienced flying from Wichita to Chicago caused a host of issues. When I finally was able to be booked on the last remaining American flight from Chicago to Cincinnati, the gate changed four times with the last change occurring very near the scheduled boarding time. While I didn't have a problem moving from gate to gate, I did notice and make note of others that had mobility issues and had to move each time for the gate change.

Could we please end the loud announcements about credit card offers on your flights? We are trying to sleep, work, watch videos, etc. and if we need a credit card, we will ask for one. Flying is already not what it used to be.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

Sat on the ground in Cincinnati for 50 minutes before deplaning

We were delayed Al ost / hours after boarding so that maintenance had to add oil to the engines. Then the oil they grabbed had been left out in the Dallas record cold and was frozen. They had to go back to the hanger and grab some that was not frozen.

No overhead space so all carryons were checked. No internet.

Poor on time performance. Flight was delayed due to a lightbulb. No updates from the pilot. Plane was dirty and hot, AC didn't work well.

Cancelled and declined to find alternatives Earlier flight is 2 days later Sent the cancellation notification very late, wish I knew earlier would have stayed to watch the Miami open final game Very disappointing service

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

It's Frontier: low-frills but boarding first because I paid for a carry-on was an unexpected perk, and the fact that it was direct and fast makes up for the lack of amenities.

There was only room for a quarter of the passengers to sit at the gate at MCO. The gate attendant allowed people who did not require assistance to board early before they realized and started to turn people back. The flight was extremely uncomfortable due to pressure. My ears, eyes, sinuses and joints were very painful the whole flight. My sister also complained about her ears and sinuses as well as joints and while deplaning I heard several other passengers complain about the same issues. I’ve never felt that much discomfort flying before and I’ve been doing it for over 40 years.

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

Information on your arrival and departure airports