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Cheap flights from Ontario to Cincinnati from $80

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Cincinnati departing on 2/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to Cincinnati

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
2:08 pm - 11:42 pm
ONT
-
CVG
6h 34m
1 stop
Frontier Logo
1:07 pm - 9:34 pm
CVG
-
ONT
35h 27m
2 stops
$180Frontier
jue., feb. 26 - lun., mar. 2
Frontier Logo
6:05 am - 11:42 pm
ONT
-
CVG
14h 37m
1 stop
Frontier Logo
8:48 pm - 1:28 pm
CVG
-
ONT
19h 40m
1 stop
$182Frontier
jue., mar. 5 - lun., mar. 9
Frontier Logo
2:21 pm - 12:59 am
ONT
-
CVG
7h 38m
1 stop
Frontier Logo
6:42 pm - 7:26 am
CVG
-
ONT
15h 44m
1 stop
$185Frontier
vie., feb. 20 - vie., feb. 27
Frontier Logo
2:06 pm - 12:59 am
ONT
-
CVG
7h 53m
1 stop
Frontier Logo
7:00 am - 11:59 pm
CVG
-
ONT
19h 59m
1 stop
$195Frontier
jue., feb. 26 - lun., mar. 2
Frontier Logo
2:06 pm - 6:01 am
ONT
-
CVG
12h 55m
1 stop
Frontier Logo
11:58 am - 11:59 pm
CVG
-
ONT
15h 01m
1 stop
$202Frontier
jue., mar. 12 - vie., mar. 13
Frontier Logo
2:21 pm - 11:33 pm
ONT
-
CVG
30h 12m
2 stops
Frontier Logo
6:42 pm - 7:26 am
CVG
-
ONT
15h 44m
1 stop
$208Frontier
vie., feb. 20 - vie., feb. 27
Frontier Logo
2:08 pm - 11:42 pm
ONT
-
CVG
6h 34m
1 stop
Frontier Logo
7:20 am - 3:37 pm
CVG
-
ONT
11h 17m
2 stops
$213Frontier
jue., mar. 5 - lun., mar. 9
Frontier Logo
7:22 pm - 12:28 am
ONT
-
CVG
26h 06m
1 stop
Frontier Logo
1:09 pm - 1:11 pm
CVG
-
ONT
27h 02m
1 stop
$216Frontier
jue., feb. 12 - lun., feb. 16
Frontier Logo
2:08 pm - 11:42 pm
ONT
-
CVG
6h 34m
1 stop
Frontier Logo
11:58 am - 4:15 pm
CVG
-
ONT
7h 17m
1 stop
$218Frontier
jue., mar. 5 - lun., mar. 9
Frontier Logo
2:08 pm - 11:42 pm
ONT
-
CVG
6h 34m
1 stop
Frontier Logo
7:00 am - 11:59 pm
CVG
-
ONT
19h 59m
1 stop
$221Frontier
jue., feb. 26 - lun., mar. 2

United Airlines flights from Ontario to Cincinnati

Our best United Airlines deals on Ontario to Cincinnati flight tickets
United Airlines
Feb 24
ONT5:00 amOntario
6h 15m
1 stop
CVG2:15 pmCincinnati Cinci./N. Kentucky
Mar 3
CVG9:00 amCincinnati Cinci./N. Kentucky
11h 41m
2 stops
ONT5:41 pmOntario
$352
United Airlines
Feb 3
ONT5:05 amOntario
6h 17m
1 stop
CVG2:22 pmCincinnati Cinci./N. Kentucky
Feb 21
CVG3:25 pmCincinnati Cinci./N. Kentucky
8h 25m
1 stop
ONT8:50 pmOntario
$558
United Airlines
Feb 6
ONT6:39 pmOntario
12h 21m
2 stops
CVG10:00 amCincinnati Cinci./N. Kentucky
Feb 18
CVG4:50 pmCincinnati Cinci./N. Kentucky
8h 09m
1 stop
ONT9:59 pmOntario
$563

Frontier flights from Ontario to Cincinnati

Our best Frontier deals on Ontario to Cincinnati flight tickets
Frontier
Feb 26
ONT2:08 pmOntario
6h 34m
1 stop
CVG11:42 pmCincinnati Cinci./N. Kentucky
Mar 2
CVG1:07 pmCincinnati Cinci./N. Kentucky
35h 27m
2 stops
ONT9:34 pmOntario
$180
Frontier
Mar 5
ONT6:05 amOntario
14h 37m
1 stop
CVG11:42 pmCincinnati Cinci./N. Kentucky
Mar 9
CVG8:48 pmCincinnati Cinci./N. Kentucky
19h 40m
1 stop
ONT1:28 pmOntario
$182
Frontier
Feb 20
ONT2:21 pmOntario
7h 38m
1 stop
CVG12:59 amCincinnati Cinci./N. Kentucky
Feb 27
CVG6:42 pmCincinnati Cinci./N. Kentucky
15h 44m
1 stop
ONT7:26 amOntario
$185

momondo 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, momondo users made 832,500 searches. Data last updated enero 29, 2026.
Use the filters below to find and compare flights from Ontario to Cincinnati that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

jue. 2/26

2:08 pm-11:42 pm

1 stop6h 34m

Cincinnati Cinci./N. Kentucky

lun. 3/2

1:07 pm-9:34 pm

2 stops35h 27m

$180

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

jue. 3/5

6:05 am-11:42 pm

1 stop14h 37m

Cincinnati Cinci./N. Kentucky

lun. 3/9

8:48 pm-1:28 pm

1 stop19h 40m

$182

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

vie. 2/20

2:21 pm-12:59 am

1 stop7h 38m

Cincinnati Cinci./N. Kentucky

vie. 2/27

6:42 pm-7:26 am

1 stop15h 44m

$185

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

jue. 2/26

2:06 pm-12:59 am

1 stop7h 53m

Cincinnati Cinci./N. Kentucky

lun. 3/2

7:00 am-11:59 pm

1 stop19h 59m

$195

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

jue. 3/12

2:06 pm-6:01 am

1 stop12h 55m

Cincinnati Cinci./N. Kentucky

vie. 3/13

11:58 am-11:59 pm

1 stop15h 01m

$202

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

vie. 2/20

2:21 pm-11:33 pm

2 stops30h 12m

Cincinnati Cinci./N. Kentucky

vie. 2/27

6:42 pm-7:26 am

1 stop15h 44m

$208

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

jue. 3/5

2:08 pm-11:42 pm

1 stop6h 34m

Cincinnati Cinci./N. Kentucky

lun. 3/9

7:20 am-3:37 pm

2 stops11h 17m

$213

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

jue. 2/12

7:22 pm-12:28 am

1 stop26h 06m

Cincinnati Cinci./N. Kentucky

lun. 2/16

1:09 pm-1:11 pm

1 stop27h 02m

$216

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

jue. 3/5

2:08 pm-11:42 pm

1 stop6h 34m

Cincinnati Cinci./N. Kentucky

lun. 3/9

11:58 am-4:15 pm

1 stop7h 17m

$218

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

jue. 2/26

2:08 pm-11:42 pm

1 stop6h 34m

Cincinnati Cinci./N. Kentucky

lun. 3/2

7:00 am-11:59 pm

1 stop19h 59m

$221

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Cincinnati from

How to get the cheapest flight ticket from Ontario to Cincinnati

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Cincinnati?

The month of September is, on average, the cheapest month to fly to Cincinnati from Ontario, with most prices found around $327. If you aren’t able to travel to Cincinnati during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $332.

What is the cheapest day to depart on your flight to Cincinnati?

According to our data, Sunday is the cheapest day to fly to Cincinnati from Ontario. The lowest ticket price found for a Sunday departure recently was $274. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Wednesday is the most expensive day to depart from Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $414.

What is the cheapest time of day to depart on your flight to Cincinnati?

Our most recent data shows that the best time of day to fly to Cincinnati is at noon. Flights from Ontario to Cincinnati during this time can be as low as $192. In the morning is when there is more demand to fly to Cincinnati, so prices are often more expensive at around $472 per ticket.

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

You are more likely to see cheaper flights to Cincinnati from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Cincinnati for around $412 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cincinnati from Ontario for as low as $294 on momondo.

How have Ontario to Cincinnati flight prices changed over time?

As of January 2026, prices for Ontario to Cincinnati flights are approximately 32% cheaper when compared to flights at the same time last year.

When to book flights from Ontario to Cincinnati

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Cincinnati according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Cincinnati (ONT to CVG) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Cincinnati

Fastest flight time

6h 21m

Direct flights

None
The fastest flight from Ontario to Cincinnati takes 6h 21m
There are no direct flights from Ontario to Cincinnati. There are no popular flight routes from Ontario to Cincinnati.
Search flight deals

  • How far is Ontario to Cincinnati Cinci./N. Kentucky by plane?

    The straight-line distance from Ontario to Cincinnati Cinci./N. Kentucky is 1859.2 mi. A reasonable flight in good conditions will take 6h 21m.

  • When did momondo last update prices for flights from Ontario Airport to Cincinnati Cinci./N. Kentucky Airport?

    Prices for flights from Ontario Airport to Cincinnati Cinci./N. Kentucky Airport were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to Cincinnati Cinci./N. Kentucky Airport?

  • How old do you have to be to fly from Ontario Airport to Cincinnati Cinci./N. Kentucky Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Cincinnati Cinci./N. Kentucky Airport.

  • What documentation or ID do you need to fly to Cincinnati Cinci./N. Kentucky Airport?

    The travel and health documents required for your trip to Cincinnati Cinci./N. Kentucky Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Cincinnati Cinci./N. Kentucky Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Ontario to Cincinnati?

Best airlines flying from Ontario to Cincinnati

Compare and see reviews for airlines that fly from Ontario to Cincinnati with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $135Free CancellationRating
5.7
3,056 reviews
Search Frontier flights
United AirlinesPriceFrom $304Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
DeltaPriceFrom $304Free CancellationRating
7.9
8,128 reviews
Search Delta flights
SouthwestPriceFrom $312Free CancellationRating
8.0
4,267 reviews
Search Southwest flights
American AirlinesPriceFrom $314Free CancellationRating
7.2
11,205 reviews
Search American Airlines flights

Traveling to a place near Cincinnati?

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

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Cincinnati?

Finding the right flight to Cincinnati from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Cincinnati quick and easy, saving you time and money.

Can I find flights from Ontario to Cincinnati with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Cincinnati from Ontario with this policy.

How can momondo help me find flights from Ontario to Cincinnati?

momondo helps you find the best flight between Ontario and Cincinnati by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to Cincinnati right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Cincinnati now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Cincinnati and let you know when they change.

An easier way to manage your Cincinnati trip

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