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Cheap flights from Ontario to Cincinnati from $111

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 5/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
10:50 am - 11:41 am
ONT
-
CVG
21h 51m
2 stops
Frontier Logo
8:40 pm - 8:04 am
CVG
-
ONT
14h 24m
1 stop
$205Frontier
Tue, May 26 - Fri, May 29
Frontier Logo
4:39 pm - 7:35 pm
ONT
-
CVG
23h 56m
1 stop
Frontier Logo
8:36 pm - 10:05 am
CVG
-
ONT
16h 29m
1 stop
$210Frontier
Wed, May 27 - Tue, Jun 2
Frontier Logo
1:33 pm - 7:47 pm
ONT
-
CVG
27h 14m
1 stop
Frontier Logo
8:15 pm - 11:49 pm
CVG
-
ONT
6h 34m
1 stop
$211Frontier
Wed, Jun 17 - Wed, Jun 24
Frontier Logo
6:00 am - 7:31 pm
ONT
-
CVG
10h 31m
1 stop
Frontier Logo
8:36 pm - 10:05 am
CVG
-
ONT
16h 29m
1 stop
$223Frontier
Sat, May 30 - Sat, Jun 6
Frontier Logo
6:00 am - 7:31 pm
ONT
-
CVG
10h 31m
1 stop
Frontier Logo
8:36 pm - 11:49 pm
CVG
-
ONT
6h 13m
1 stop
$224Frontier
Tue, Aug 18 - Mon, Aug 24
Frontier Logo
6:00 am - 11:14 am
ONT
-
CVG
26h 14m
2 stops
Frontier Logo
8:15 pm - 11:49 pm
CVG
-
ONT
6h 34m
1 stop
$225Frontier
Wed, Jun 17 - Wed, Jun 24
Frontier Logo
10:50 am - 11:41 am
ONT
-
CVG
21h 51m
2 stops
Frontier Logo
8:40 pm - 3:09 pm
CVG
-
ONT
21h 29m
1 stop
$226Frontier
Tue, May 26 - Sun, May 31
Frontier Logo
6:00 am - 7:31 pm
ONT
-
CVG
10h 31m
1 stop
Frontier Logo
8:36 pm - 10:05 am
CVG
-
ONT
16h 29m
1 stop
$227Frontier
Fri, May 22 - Tue, May 26
Frontier Logo
6:00 am - 7:31 pm
ONT
-
CVG
10h 31m
1 stop
Frontier Logo
8:36 pm - 10:05 am
CVG
-
ONT
16h 29m
1 stop
$228Frontier
Fri, May 22 - Tue, May 26
Frontier Logo
6:00 am - 7:03 pm
ONT
-
CVG
10h 03m
1 stop
Frontier Logo
8:36 pm - 11:50 pm
CVG
-
ONT
6h 14m
1 stop
$230Frontier
Wed, Jul 8 - Thu, Jul 16

Frontier flights from Ontario to Cincinnati

Our best Frontier deals on Ontario to Cincinnati flight tickets
Frontier
May 26
ONT10:50 amOntario
21h 51m
2 stops
CVG11:41 amCincinnati Cinci./N. Kentucky
May 29
CVG8:40 pmCincinnati Cinci./N. Kentucky
14h 24m
1 stop
ONT8:04 amOntario
$205
Frontier
May 27
ONT4:39 pmOntario
23h 56m
1 stop
CVG7:35 pmCincinnati Cinci./N. Kentucky
Jun 2
CVG8:36 pmCincinnati Cinci./N. Kentucky
16h 29m
1 stop
ONT10:05 amOntario
$210
Frontier
Jun 17
ONT1:33 pmOntario
27h 14m
1 stop
CVG7:47 pmCincinnati Cinci./N. Kentucky
Jun 24
CVG8:15 pmCincinnati Cinci./N. Kentucky
6h 34m
1 stop
ONT11:49 pmOntario
$211

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 May 4, 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

Cheapest round-trip

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Tue 5/26

10:50 am-11:41 am

2 stops21h 51m

Cincinnati Cinci./N. Kentucky

Fri 5/29

8:40 pm-8:04 am

1 stop14h 24m

$205

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 5/27

4:39 pm-7:35 pm

1 stop23h 56m

Cincinnati Cinci./N. Kentucky

Tue 6/2

8:36 pm-10:05 am

1 stop16h 29m

$210

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 6/17

1:33 pm-7:47 pm

1 stop27h 14m

Cincinnati Cinci./N. Kentucky

Wed 6/24

8:15 pm-11:49 pm

1 stop6h 34m

$211

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Sat 5/30

6:00 am-7:31 pm

1 stop10h 31m

Cincinnati Cinci./N. Kentucky

Sat 6/6

8:36 pm-10:05 am

1 stop16h 29m

$223

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Tue 8/18

6:00 am-7:31 pm

1 stop10h 31m

Cincinnati Cinci./N. Kentucky

Mon 8/24

8:36 pm-11:49 pm

1 stop6h 13m

$224

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 6/17

6:00 am-11:14 am

2 stops26h 14m

Cincinnati Cinci./N. Kentucky

Wed 6/24

8:15 pm-11:49 pm

1 stop6h 34m

$225

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Tue 5/26

10:50 am-11:41 am

2 stops21h 51m

Cincinnati Cinci./N. Kentucky

Sun 5/31

8:40 pm-3:09 pm

1 stop21h 29m

$226

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Fri 5/22

6:00 am-7:31 pm

1 stop10h 31m

Cincinnati Cinci./N. Kentucky

Tue 5/26

8:36 pm-10:05 am

1 stop16h 29m

$227

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Fri 5/22

6:00 am-7:31 pm

1 stop10h 31m

Cincinnati Cinci./N. Kentucky

Tue 5/26

8:36 pm-10:05 am

1 stop16h 29m

$228
Quickest round-trip

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 7/8

6:00 am-7:03 pm

1 stop10h 03m

Cincinnati Cinci./N. Kentucky

Thu 7/16

8:36 pm-11:50 pm

1 stop6h 14m

$230

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 typical price of a round-trip flight between Ontario and Cincinnati?

What is the cheapest month to fly to Cincinnati?

The month of October is, on average, the cheapest month to fly to Cincinnati from Ontario, with most prices found around $325. If you aren’t able to travel to Cincinnati during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $327.

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

According to our data, Thursday is the cheapest day to fly to Cincinnati from Ontario. The lowest ticket price found for a Thursday departure recently was $347. 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 $439.

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 $196. 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 from Ontario 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 $415 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 $291 on momondo.

How have Ontario to Cincinnati flight prices changed over time?

As of May 2026, prices for Ontario to Cincinnati flights are approximately 173% 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 51m

Direct flights

None
The fastest flight from Ontario to Cincinnati takes 5h 51m
There are no direct flights from Ontario to Cincinnati. There are no popular flight routes from Ontario to Cincinnati.
Search flight deals

Frequently asked questions about flying from Ontario to Cincinnati

  • 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 51m.

  • 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 $150Free CancellationRating
5.6
2,965 reviews
Search Frontier flights
American AirlinesPriceFrom $278Free CancellationRating
7.1
11,673 reviews
Search American Airlines flights
DeltaPriceFrom $297Free CancellationRating
7.9
8,460 reviews
Search Delta flights
United AirlinesPriceFrom $304Free CancellationRating
7.4
9,680 reviews
Search United Airlines flights
SouthwestPriceFrom $312Free CancellationRating
7.9
4,307 reviews
Search Southwest 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
Williamstown
Middletown
Lawrenceburg
Blue Ash
West Chester
Fairfield
Oxford
Monroe
Dry Ridge
Hebron
Bethel
Trenton
Corinth
Georgetown
Edgewood

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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