CVG - ONT

$122 Find Cheap Flights from Cincinnati 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 Cincinnati to Ontario departing on 10/17. 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 Ontario

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

Cheapest round-trip
$248
Typical prices: $246-$381
Frontier
Mon 8/17Wed 8/19
CVG - ONT • 1 stop
Cheapest one-way
$122
Typical prices: $87-$260
Frontier
Sat 10/17
CVG - ONT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Cincinnati and Ontario. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $276 (round-trip)
Shortest trip • 6h 59m (one-way)
Insights
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When to travel
Cheapest • 25% price drop
Most popular
Good to know
Good to know
+1
+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 Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Cincinnati to Ontario (CVG-ONT)

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

Recent round-trip flight deals from Cincinnati to Ontario

Mon, Aug 17 - Wed, Aug 19
Frontier Logo
8:34 pm - 11:50 pm
CVG
-
ONT
6h 16m
1 stop
Frontier Logo
6:00 am - 7:25 pm
ONT
-
CVG
10h 25m
1 stop
$248Frontier
Wed, Jul 29 - Wed, Aug 5
Frontier Logo
8:36 pm - 11:50 pm
CVG
-
ONT
6h 14m
1 stop
Frontier Logo
6:00 am - 7:29 pm
ONT
-
CVG
10h 29m
1 stop
$253Frontier
Wed, Jul 29 - Sat, Aug 8
Frontier Logo
8:36 pm - 11:50 pm
CVG
-
ONT
6h 14m
1 stop
Frontier Logo
6:00 am - 7:29 pm
ONT
-
CVG
10h 29m
1 stop
$258Frontier
Wed, Jul 29 - Thu, Aug 6
Frontier Logo
8:36 pm - 11:50 pm
CVG
-
ONT
6h 14m
1 stop
Frontier Logo
8:17 am - 6:22 pm
ONT
-
CVG
7h 05m
1 stop
$261Frontier
Thu, Aug 20 - Mon, Aug 24
Frontier Logo
8:30 pm - 11:50 pm
CVG
-
ONT
6h 20m
1 stop
Frontier Logo
6:00 am - 7:25 pm
ONT
-
CVG
10h 25m
1 stop
$264Frontier
Wed, Jul 22 - Wed, Jul 29
Frontier Logo
8:36 pm - 10:04 am
CVG
-
ONT
16h 28m
1 stop
Frontier Logo
1:38 pm - 8:25 pm
ONT
-
CVG
27h 47m
1 stop
$268Frontier
Sat, Oct 24 - Wed, Nov 4
Frontier Logo
6:05 am - 10:43 am
CVG
-
ONT
7h 38m
1 stop
Frontier Logo
6:15 am - 8:29 pm
ONT
-
CVG
11h 14m
1 stop
$269Frontier
Sat, Jul 25 - Wed, Jul 29
Multiple Airlines Logo
8:26 pm - 10:04 am
CVG
-
ONT
16h 38m
1 stop
Multiple Airlines Logo
6:00 am - 12:31 pm
ONT
-
CVG
27h 31m
1 stop
$272Multiple Airlines
Sat, Oct 24 - Sat, Nov 7
Frontier Logo
6:05 am - 10:43 am
CVG
-
ONT
7h 38m
1 stop
Frontier Logo
6:15 am - 8:29 pm
ONT
-
CVG
11h 14m
1 stop
$278Frontier
Mon, Sep 28 - Wed, Oct 7
Frontier Logo
12:25 pm - 1:57 pm
CVG
-
ONT
28h 32m
1 stop
Frontier Logo
2:58 pm - 8:21 pm
ONT
-
CVG
26h 23m
1 stop
$279Frontier
Booking Insights

KAYAK's insights & trends for Cincinnati to Ontario flights

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Cincinnati 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 Cincinnati to Ontario is August, where tickets cost $316 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $516 and $511 respectively.

Good to know

Low seasonApril
Cheapest flight$122
Most popular time to fly and prices are also 9% lower on average.
Flight from Cincinnati to Ontario

When to book flights from Cincinnati to Ontario

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

  • What is the cheapest flight from Cincinnati to Ontario?

    In the last 5 days, the lowest price for a flight from Cincinnati to Ontario was $122 for a one-way ticket and $248 for a round-trip.

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

    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 Cincinnati to Ontario?

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

  • Which airline alliances offer flights from Cincinnati to Ontario?

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

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

    The two airlines most popular with KAYAK users for flights from Cincinnati to Ontario are Southwest and Delta. With an average price for the route of $500 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 $418 and an overall rating of 7.8.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Cincinnati 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 Cincinnati 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 Cincinnati with another airline. Booking your flights between Cincinnati 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 Cincinnati 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 Cincinnati 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 Cincinnati to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Cincinnati 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 Cincinnati 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.
7.9
SouthwestOverall score based on 4249 reviews
7.5Entertainment
8.0Comfort
8.1Boarding
7.0Food
8.6Crew
Airline reviews

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

2.0 MediocreIrene, Jun 2026
DEN - SFO
Read more Southwest reviews

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

Our flight to Oakland was great bc the plane was new but it was delayed by 15min not bad at all. Over all it was an 8/10

The flight in it self was good. The delays looking for pilots was unexpected.

Weather delay and crew and gate staff kept everyone informed.

Good flight. Connector flight was delayed so made a short turnaround in Atlanta which was stressful. Otherwise, great crew, Staff in ATL was very informative about the delay and ensured people their connections were fine. Notified the ones that were not. Great communication.

Seat was extremely hard which made even a short 1 hour 20 minute flight fairly uncomfortable.

Only water, tea or coffee served midflight, even to comfort seating. Man next to me needed two seats and took up a portion of my seat and Delta did nothing.

Delta made it easy, comfortable and timely. The crew was fantastic.

Zero updates from the pilots for 30 minutes in the tarmac

Delta flight attendants poorly managed the boarding process and overhead storage. My bag was checked last minute and no claim ticket was provided. My bag is now lost. Complete incompetence by all flight crew involved.

We were told our second flight was canceled, but it was not. We did not receive our bags for two days. I did not have my meds, so I was very sick for the first three days. Our house rental was $5700 for the week. Do the math. It will be difficult for us to fly Delta again.

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Crew was not helpful. Other passengers in first class were over served blatantly over intoxicated.

Crew was wonderful, very professional and pleasant. On time performance. Excellent flights,smooth. Thank you!

Know that the movies that you are going to be offered are the oldest be rated movies they could possibly get. They may have one or two new movies that they keep advertising but when you’re flying 15 hours, there is nothing to see past the first new movie.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

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

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

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

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Cabin was pitch black, even during meal service. The reading lights for seat 2E/F did not work, and seat 2E did not recline.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

Seat comfort is still an issue. Seats way too hard or lacking lumbar support. Entertainment system has lots of nice features like “Don’t wake me for meals”. The Bluetooth headphone pairing works well if you know how to make your pods available for pairing. While this trip I didn’t find any of the many many movies that interesting, there is plenty in there for all tastes. Crew were excellent. Captain was good about telling us how limg seat belt sign would be on while going around a storm system. Wi-Fi was quite good for only $8 bucks for mileage plus members. Be sure to load a credit card into your United app to pay for food or drinks.

Seat bottom cushions are not good. I’m 165# & they hurt my butt. Plenty of legroom.

The flight attendant was friendly and efficient. The temperature was kept nice and cool. The plane was nice, but filthy. There were visible spills on my tray table. The gate agent was somewhat rude with her announcements and in speaking with other customers.

My flight was delayed. We left at midnight. I got to Greensboro (GSO) at 1am. All of AA's flights in/out of Charlotte always seem to be delayed or canceled. It took me all day on Sunday to get to my destination of Cincinnati from Greensboro. I had to be rerouted through Chicago because my original flight was canceled as the door to plane was closing in GSO. The saddest part is I could have driven and arrived sooner. . . I recognize there is a lot going on that impacts travel. This week it was weather. Yesterday in Cincinnati it was President Trump. But as a frequent flyer, the flight from South Bend to Charlotte always runs late. The subsequent flight to Greensboro is always midnight to 2am. . . I do want to give props the Charlotte boarding crew. They had four flights going out of the same area at the same time. They turned it quickly and mitigated the grumbling from the crowd.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

There was a delay with the plan which cause the flight to leave later and once arrived in Chicago there was another delay and some passengers missed their connecting flights

Flight was delayed. Not much information on when the flight would take off. Eventually we were told it was maintenance. App was not giving updates.

Amazing I love American. I’ll never fly anyone else if I can help it.

The boarding experience was good; $20 for wifi per flight is uncompetitive compared to Delta, Southwest, and others, and puts American lower on my list given similar pricing.

Everything was great except for the wifi was junk. Crew was super friendly and helpful

It was fine. I didn't love the food but it was at least a real attempt at serving a meal, unlike my earlier flight from Nashville to Dallas.

One of the worst travel experiences I've had. Had a flight scheduled with CVG to RSW on VLSWQX this morning departing at 5:30. Two individuals at the gate and one was in training. Not her fault but she didn't have the ability to check people in resulting in at least 15 families that didn't make it on the plane because they weren't checked into the system in time. When arriving at the airport to drop off our prepaid checked bags, the bag drop off agent asked if we could check our bags at the gate because of the long line. We said no problem so arrived at the gate by 5:00. They told those people that had previously paid for checked bags to stand off to the side while they let others that either didn't have a checked bag or their bag was already on the plan through. Realizing the gate workers had an issue, they either called for help or this lady showed up late for work as she didn't arrive until 5:15. The worker who had been there training the other individual and working diligently to make sure all passengers got on board. He even said that at one point all people that are currently in line are fine but asked the person in training to stand outside the ticketing area around 5:15 to notify any late travels that the flight was in boarding process and they arrrived too late. At that point, we're sill standing off to the side with our pre-paid checked bags patiently waiting. When the new lady arrived she couldn't have been more rude. It was an awful seen. Essentially they had asked for those without an assigned seat to board last, those with pre-paid checked bag stand off to the site and any traveling with a larger items that needed to be checked at the gate (such as a stroller), wait on the side. They realized that the flight needed to leave on time so the gate attendant shut the gate. So anyone without a seat assignment, those that had pre-checked bags, and the worst one I saw was a mother with two infant children was in line with use because she was asked to stand to the side because her stroller. When they shut the door to the plan they told her she could no longer get on. Her checked bags were already on the plane with her car keys in them, and the lady told her we couldn't accept anyone else on because the door was shut. She didn't even have a way to get home from the airport. Truely evil behavior. I've flown Frontier enough to know customer service is not a top priority in the company's mission, but this was an all-time low. I'm sending this after an 18 hour drive that our family just completed to Bonita Springs . I felt really bad for the lady being trained and the other individual trying to help, but when the new lady came to the gate she was truly one of the rudest individuals I've ever met. One lady had been there since 4am but because she didn't have an assigned seat they wouldn't let her on the plan.

The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.

I chose the seats when booked the flight and paid for them. However after checking in I found we were assigned different seats!

Nothing about the flight was good. The crew was rude and unwilling to assist would never recommend this airline to anyone and for sure will not fly it again

Flight was cancelled and was not able to get another flight thru Frontier. Per frontier a refund was issued but I do not see a refund on my Afirm account.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Poor communication. Plane was available, but crew to fly. It was not so flight was delayed. Our flight was overbooked, so carry-on. Baggage was denied without proper notification before hand. Cost of bags to be checked is outrageous.

Was delayed because of the crew. More efficient in time management.

Was charged 99 dollars for a bag despite agents previously telling me it would be ok. Customer service was unhelpful

I will like you ( Frontier Airlines) to fly into LAX instead of ONT because I live in LA and the subway takes me to my house in just 15 minutes

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

Information on your arrival and departure airports