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Cheap flights from Ontario to Cincinnati from $73

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 2/2. 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
10:18 am - 11:57 pm
ONT
-
CVG
10h 39m1 stop
Frontier Logo
2:10 pm - 7:32 pm
CVG
-
ONT
8h 22m1 stop
$148Frontier
Fri, Feb 6 - Sun, Feb 8
Frontier Logo
8:48 pm - 11:57 pm
ONT
-
CVG
24h 09m1 stop
Frontier Logo
2:10 pm - 12:10 pm
CVG
-
ONT
25h 00m1 stop
$149Frontier
Thu, Jan 22 - Sun, Jan 25
Frontier Logo
7:00 am - 1:15 pm
ONT
-
CVG
27h 15m1 stop
Frontier Logo
7:16 pm - 11:59 pm
CVG
-
ONT
7h 43m1 stop
$166Frontier
Wed, Mar 4 - Mon, Mar 9
Frontier Logo
2:34 pm - 11:38 pm
ONT
-
CVG
6h 04m1 stop
Frontier Logo
6:55 am - 11:59 pm
CVG
-
ONT
20h 04m1 stop
$183Frontier
Thu, Jan 8 - Thu, Jan 15
Frontier Logo
10:18 am - 11:57 pm
ONT
-
CVG
10h 39m1 stop
Frontier Logo
2:11 pm - 9:34 pm
CVG
-
ONT
34h 23m2 stops
$186Frontier
Fri, Feb 6 - Mon, Feb 9
Frontier Logo
10:18 am - 11:57 pm
ONT
-
CVG
10h 39m1 stop
Frontier Logo
10:10 am - 7:32 pm
CVG
-
ONT
12h 22m2 stops
$203Frontier
Fri, Feb 6 - Sun, Feb 8
Frontier Logo
7:00 am - 1:13 pm
ONT
-
CVG
27h 13m1 stop
Frontier Logo
6:10 am - 11:56 pm
CVG
-
ONT
20h 46m1 stop
$204Frontier
Sat, Jan 10 - Mon, Jan 12
Frontier Logo
6:30 am - 11:56 pm
ONT
-
CVG
14h 26m1 stop
Frontier Logo
6:15 am - 11:59 pm
CVG
-
ONT
20h 44m1 stop
$221Frontier
Thu, Feb 19 - Fri, Feb 20
Frontier Logo
6:45 am - 1:13 pm
ONT
-
CVG
27h 28m1 stop
Frontier Logo
6:10 am - 11:59 pm
CVG
-
ONT
20h 49m1 stop
$234Frontier
Wed, Dec 24 - Thu, Jan 1
Frontier Logo
2:34 pm - 10:52 am
ONT
-
CVG
17h 18m2 stops
Frontier Logo
6:55 am - 11:59 pm
CVG
-
ONT
20h 04m1 stop
$235Frontier
Thu, Jan 8 - Thu, Jan 15

Alaska Airlines flights from Ontario to Cincinnati

Our best Alaska Airlines deals on Ontario to Cincinnati flight tickets
Alaska Airlines
Jan 10
ONT4:03 pmOntario
24h 46m
1 stop
CVG7:49 pmCincinnati Cinci./N. Kentucky
Jan 17
CVG8:00 amCincinnati Cinci./N. Kentucky
15h 36m
1 stop
ONT8:36 pmOntario
$274
Find similar
Alaska Airlines
Jan 8
ONT4:03 pmOntario
24h 46m
1 stop
CVG7:49 pmCincinnati Cinci./N. Kentucky
Jan 12
CVG8:00 amCincinnati Cinci./N. Kentucky
18h 56m
1 stop
ONT11:56 pmOntario
$285
Find similar
Alaska Airlines
Feb 27
ONT4:02 pmOntario
25h 37m
1 stop
CVG8:39 pmCincinnati Cinci./N. Kentucky
Mar 4
CVG8:09 amCincinnati Cinci./N. Kentucky
17h 35m
1 stop
ONT10:44 pmOntario
$294
Find similar

American Airlines flights from Ontario to Cincinnati

Our best American Airlines deals on Ontario to Cincinnati flight tickets
American Airlines
Jan 8
ONT9:59 amOntario
9h 01m
2 stops
CVG10:00 pmCincinnati Cinci./N. Kentucky
Jan 15
CVG10:00 amCincinnati Cinci./N. Kentucky
9h 05m
2 stops
ONT4:05 pmOntario
$362
Find similar
American Airlines
Dec 25
ONT9:53 amOntario
9h 33m
2 stops
CVG10:26 pmCincinnati Cinci./N. Kentucky
Dec 31
CVG11:24 amCincinnati Cinci./N. Kentucky
10h 04m
2 stops
ONT6:28 pmOntario
$474
Find similar

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 December 11, 2025.
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

Fri 2/6

10:18 am-11:57 pm

1 stop10h 39m

Cincinnati Cinci./N. Kentucky

Sun 2/8

2:10 pm-7:32 pm

1 stop8h 22m

$148

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Thu 1/22

8:48 pm-11:57 pm

1 stop24h 09m

Cincinnati Cinci./N. Kentucky

Sun 1/25

2:10 pm-12:10 pm

1 stop25h 00m

$149

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 3/4

7:00 am-1:15 pm

1 stop27h 15m

Cincinnati Cinci./N. Kentucky

Mon 3/9

7:16 pm-11:59 pm

1 stop7h 43m

$166

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Thu 1/8

2:34 pm-11:38 pm

1 stop6h 04m

Cincinnati Cinci./N. Kentucky

Thu 1/15

6:55 am-11:59 pm

1 stop20h 04m

$183

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Fri 2/6

10:18 am-11:57 pm

1 stop10h 39m

Cincinnati Cinci./N. Kentucky

Mon 2/9

2:11 pm-9:34 pm

2 stops34h 23m

$186

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Fri 2/6

10:18 am-11:57 pm

1 stop10h 39m

Cincinnati Cinci./N. Kentucky

Sun 2/8

10:10 am-7:32 pm

2 stops12h 22m

$203

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Sat 1/10

7:00 am-1:13 pm

1 stop27h 13m

Cincinnati Cinci./N. Kentucky

Mon 1/12

6:10 am-11:56 pm

1 stop20h 46m

$204

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Thu 2/19

6:30 am-11:56 pm

1 stop14h 26m

Cincinnati Cinci./N. Kentucky

Fri 2/20

6:15 am-11:59 pm

1 stop20h 44m

$221

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 12/24

6:45 am-1:13 pm

1 stop27h 28m

Cincinnati Cinci./N. Kentucky

Thu 1/1

6:10 am-11:59 pm

1 stop20h 49m

$234

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Thu 1/8

2:34 pm-10:52 am

2 stops17h 18m

Cincinnati Cinci./N. Kentucky

Thu 1/15

6:55 am-11:59 pm

1 stop20h 04m

$235

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 $330. 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 $289. 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 $417.

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 $195. In the morning is when there is more demand to fly to Cincinnati, so prices are often more expensive at around $499 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 $418 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 $184 on momondo.

How have Ontario to Cincinnati flight prices changed over time?

As of December 2025, prices for Ontario to Cincinnati flights are approximately 35% more expensive 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

5h 59m

Direct flights

None
The fastest flight from Ontario to Cincinnati takes 5h 59m
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 5h 59m.

  • 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 $139Free CancellationRating
5.8
3,084 reviews
Search Frontier flights
United AirlinesPriceFrom $304Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
DeltaPriceFrom $304Free CancellationRating
7.9
8,008 reviews
Search Delta flights
SouthwestPriceFrom $312Free CancellationRating
7.9
4,253 reviews
Search Southwest flights
American AirlinesPriceFrom $316Free CancellationRating
7.2
11,050 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
West Chester
Fairfield
Oxford
Dry Ridge
Monroe
Edgewood
Hebron
Bethel
Ghent
Trenton
Corinth

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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