ONT - CVG

$94 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 2/27. 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
$190
Overall average: $432
Frontier
Thu 4/16Sun 4/19
ONT - CVG • 1 stop
Cheapest one-way
$94
Typical prices: $97-$164
Frontier
Fri 2/27
ONT - CVG • 1 stop
Top airlines
Frontier
Cheapest • from $190 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 22% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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, Apr 16 - Sun, Apr 19
Frontier Logo
8:59 pm - 6:15 am
ONT
-
CVG
6h 16m
1 stop
Frontier Logo
8:48 pm - 8:04 pm
CVG
-
ONT
26h 16m
1 stop
$190Frontier
Thu, Feb 26 - Sun, Mar 1
Frontier Logo
2:08 pm - 11:42 pm
ONT
-
CVG
6h 34m
1 stop
Frontier Logo
1:09 pm - 1:11 pm
CVG
-
ONT
27h 02m
1 stop
$196Frontier
Wed, Mar 25 - Tue, Mar 31
Frontier Logo
10:03 pm - 12:42 pm
ONT
-
CVG
11h 39m
1 stop
Frontier Logo
7:20 am - 11:59 pm
CVG
-
ONT
19h 39m
1 stop
$200Frontier
Thu, Apr 30 - Mon, May 4
Frontier Logo
12:59 am - 6:48 pm
ONT
-
CVG
14h 49m
1 stop
Frontier Logo
8:48 pm - 6:34 pm
CVG
-
ONT
24h 46m
1 stop
$201Frontier
Thu, Apr 16 - Sun, Apr 19
Frontier Logo
6:15 am - 7:23 pm
ONT
-
CVG
10h 08m
1 stop
Frontier Logo
1:05 pm - 11:24 pm
CVG
-
ONT
13h 19m
1 stop
$211Frontier
Fri, Mar 13 - Tue, Mar 17
Frontier Logo
3:30 pm - 5:42 am
ONT
-
CVG
11h 12m
1 stop
Frontier Logo
7:20 am - 11:59 pm
CVG
-
ONT
19h 39m
1 stop
$220Frontier
Thu, Feb 26 - Sun, Mar 1
Frontier Logo
7:22 pm - 12:22 am
ONT
-
CVG
26h 00m
1 stop
Frontier Logo
1:09 pm - 1:11 pm
CVG
-
ONT
27h 02m
1 stop
$222Frontier
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
7:22 pm - 12:22 am
ONT
-
CVG
26h 00m
1 stop
Frontier Logo
1:07 pm - 9:34 pm
CVG
-
ONT
35h 27m
2 stops
$226Frontier
Wed, Feb 25 - Tue, Mar 3
Frontier Logo
3:22 pm - 11:59 pm
ONT
-
CVG
29h 37m
1 stop
Frontier Logo
3:20 pm - 9:34 pm
CVG
-
ONT
33h 14m
2 stops
$228Frontier
Fri, Mar 13 - Tue, Mar 17
Frontier Logo
3:30 pm - 5:42 am
ONT
-
CVG
11h 12m
1 stop
Frontier Logo
7:20 am - 11:59 pm
CVG
-
ONT
19h 39m
1 stop
$231Frontier
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.

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 September, where tickets cost $327 (return) on average. On the other hand, the most expensive months are February and December, where the average cost of round-trip tickets is $512 and $488 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 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$94
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 22% 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 3 days, the lowest price for a flight from Ontario to Cincinnati was $94 for a one-way ticket and $190 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 $451 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $435 and an overall rating of 7.9.

  • 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.
8.0
SouthwestOverall score based on 4284 reviews
8.1Boarding
7.0Food
8.6Crew
7.5Entertainment
8.0Comfort
Airline reviews

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

2.0 MediocreDavid, Feb 2026
SAN - LAS
Read more Southwest reviews

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

Great flight but super high price. Glad it was a business trip and not personal

3 hour delay. Had to change plans and was still delayed.

We got exit row seats both flights. Everything was running on time

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

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

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

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

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

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

The flight crew where really good. Better then the crew from BNE to SFO

left on time, reasonable boarding process arrived early luggage came out quickly

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

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.

Flight was delayed for 2 hours, then last minute the change to on time. The satélite location is far and a nightmare to get to.

We flew in first class. The crew did not offer drinks before the flight took off, but they treated us well during the flight. The food was excellent. There was actually too much food served, but it was nice to have all the options.

For a 5 1/2 hour flite i considered the "business class" to be subpar. The seats were just ok, no amenities, really nothing more than a long domestic flight. Frankly disappointed.

It would be nice to have some low carb options in the snacks.

one crew said "he" didn't serve double alcohol drinks for travelers in exit rows. crew on prior flight did. Is this a AA rule, and the prior crew was being nice? Also, I think we deserve more than a 25% refund for losing first class seats when rescheduling a flight due to weather

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.

The entertainment options were at best, fair. It was exactly the same as my outbound flight. It would have been more entertaining if there were some series from Apple TV, HBO, Showtime or other carriers for me to catch up with.

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.

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

Overall experience was great. Flights were almost on time in departing and we arrived at our destination as scheduled. No issues with amenities or flight crew. Everything went well as as expected. Will fly again with American Airlines in the future!

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

Flight got delayed for 5 hours no good explanation was offered ;(

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

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

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

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

Information on your arrival and departure airports