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$80+ Cheap flights from Ontario to Cincinnati (ONT - CVG)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CVG
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Cincinnati Cinci./N. Kentucky are usually found in October or September, booked 28 days in advance, depart on a Wednesday or Monday and return on a Thursday

Cheap flight deals from Ontario to Cincinnati

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Cincinnati (CVG). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$150
(CheapOair)

One-way from

$80
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$336
From Ontario to Cincinnati Cinci./N. Kentucky
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One-way flight from Ontario to Cincinnati Cinci./N. Kentucky
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Highest demand for flights based on searches. 8% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Cincinnati

Cheapest flights from Ontario to Cincinnati
Explore the most affordable flight options available from Ontario to Cincinnati. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:53 amONT - CVG
1 stop15h 46mFrontier
Tue 11/46:05 amCVG - ONT
1 stop20h 45mFrontier
Deal found 9/14$150
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:30 amONT - CVG
1 stop12h 09mFrontier
Sun 10/1212:01 pmCVG - ONT
1 stop8h 48mFrontier
Deal found 9/14$152
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/158:00 amONT - CVG
1 stop19h 54mFrontier
Wed 10/228:00 amCVG - ONT
1 stop18h 50mFrontier
Deal found 9/14$156
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:53 amONT - CVG
1 stop7h 11mFrontier
Thu 10/166:14 pmCVG - ONT
1 stop8h 36mFrontier
Deal found 9/14$160
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:00 amONT - CVG
1 stop6h 43mFrontier
Sun 9/284:48 pmCVG - ONT
1 stop17h 29mFrontier
Deal found 9/14$162
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/206:53 amONT - CVG
1 stop15h 46mFrontier
Thu 10/236:14 pmCVG - ONT
1 stop8h 36mFrontier
Deal found 9/14$171
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/57:15 pmONT - CVG
1 stop23h 44mFrontier
Fri 10/105:59 pmCVG - ONT
1 stop16h 50mFrontier
Deal found 9/15$173
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2612:13 pmONT - CVG
1 stop6h 49mFrontier
Tue 9/308:00 amCVG - ONT
1 stop14h 54mFrontier
Deal found 9/14$177
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/58:59 pmONT - CVG
1 stop12h 20mFrontier
Tue 10/148:00 amCVG - ONT
1 stop18h 50mFrontier
Deal found 9/15$193
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2411:53 amONT - CVG
1 stop10h 56mFrontier
Mon 10/276:05 amCVG - ONT
1 stop6h 30mFrontier
Deal found 9/14$195
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/610:40 pmONT - CVG
2 stops18h 40mFrontier
Sat 11/88:00 amCVG - ONT
1 stop6h 10mFrontier
Deal found 9/15$197
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/58:59 pmONT - CVG
1 stop12h 20mFrontier
Thu 10/1612:01 pmCVG - ONT
1 stop8h 53mFrontier
Deal found 9/14$201

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Cincinnati that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Ontario to Cincinnati that are best for you.

Fly from

Ontario

Fly to

Cincinnati

Route

Depart

Return

Price

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Tue 10/28

6:53 am-1:39 am

1 stop15h 46m

Cincinnati Cinci./N. Kentucky

Sun 11/2

5:05 am-10:10 am

1 stop8h 05m

$150

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Fri 11/14

6:53 am-8:20 pm

1 stop10h 27m

Cincinnati Cinci./N. Kentucky

Sun 11/16

6:05 am-11:10 am

1 stop8h 05m

$150

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 10/29

6:53 am-1:39 am

1 stop15h 46m

Cincinnati Cinci./N. Kentucky

Tue 11/4

6:05 am-11:50 pm

1 stop20h 45m

$150

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Sun 10/5

7:15 pm-9:59 pm

1 stop23h 44m

Cincinnati Cinci./N. Kentucky

Fri 10/10

5:59 pm-7:49 am

1 stop16h 50m

$173

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Mon 10/6

12:13 pm-9:59 pm

1 stop6h 46m

Cincinnati Cinci./N. Kentucky

Fri 10/17

6:05 am-9:35 am

1 stop6h 30m

$201

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 11/12

6:53 am-5:10 pm

2 stops31h 17m

Cincinnati Cinci./N. Kentucky

Sat 11/15

8:00 am-11:10 am

1 stop6h 10m

$204

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 10/29

6:53 am-5:10 pm

2 stops31h 17m

Cincinnati Cinci./N. Kentucky

Sun 11/2

5:05 am-10:10 am

1 stop8h 05m

$204

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Fri 10/24

8:34 am-11:59 pm

1 stop12h 25m

Cincinnati Cinci./N. Kentucky

Mon 10/27

5:59 pm-11:50 pm

2 stops32h 51m

$212

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Fri 10/3

8:59 pm-10:41 pm

1 stop22h 42m

Cincinnati Cinci./N. Kentucky

Wed 10/8

8:00 am-11:50 pm

1 stop18h 50m

$225

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Fri 9/26

12:13 pm-10:02 pm

1 stop6h 49m

$81

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 19 results
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Best time to book a flight from Ontario to Cincinnati

Have a flexible travel schedule? Discover the best time to fly to Cincinnati from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Cincinnati. Price data was last updated on September 12, 2025.

To ensure you get the cheapest price possible for a flight from Ontario to Cincinnati, you should look to book at least 28 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Ontario to Cincinnati?

Currently, August is the cheapest month in which you can book a flight from Ontario to Cincinnati (average of $239). Flying from Ontario to Cincinnati in March is currently the most expensive (average of $292). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to CVG?

Find hourly flight availability from Ontario to Cincinnati. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

It’s optimal to fly from Ontario to Cincinnati in the evening. By choosing this option you can save up to 48% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from Ontario to Cincinnati?

Reviews of airlines servicing Cincinnati

Get insights into the airlines that provide service to Cincinnati. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cincinnati. Reviews last updated September 16, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Ontario to Cincinnati to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Cincinnati. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Cincinnati?

    For as low as $150, Frontier can have you in Cincinnati from Ontario in 15h 46m. Airlines will cover a distance of 1849 mi.

  • What are the cheapest airlines flying from Ontario to Cincinnati round-trip?

    Flying on Frontier is currently your cheapest option to Cincinnati, with prices starting at $157. Additional round-trip tickets that might be worth considering are offered by Delta and Southwest, with the lowest prices starting at $304 and $312, respectively. These flights start at 62% lower than the current average price 3 months from now.

  • Can I find deals for flights from Ontario to Cincinnati that include hotel bookings?

    Yes. In addition to deals on Ontario to Cincinnati flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Cincinnati?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Cincinnati.

  • Can I find deals for business class flights from Ontario to Cincinnati?

    Yes. Cheapflights offers flight deals from Ontario to Cincinnati by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Cincinnati?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Cincinnati (average of $239). Flying from Ontario to Cincinnati in March is currently the most expensive (average of $292). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Cincinnati?

Book flights to Cincinnati if you plan to visit one of these locations
Florence
Newport
Mason
Sharonville
West Chester
Covington
Hebron
Lawrenceburg
Fairfield
Blue Ash
Williamstown
Sparta
Middletown
Oxford
Edgewood
Dry Ridge

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Cincinnati

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to Cincinnati

Discover the top 5 airlines that operate flights from Ontario to Cincinnati. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$157Average$276FlexibilityNo cancel feeOn-time62%
DeltaCheapest$304Average$445FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$312Average$438FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$316Average$420FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$377Average$559FlexibilityNo cancel feeOn-time69%

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