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Cheap flights from Ontario to Cincinnati from $121

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 7/22. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Cincinnati

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:49 am - 12:31 pm
ONT
-
CVG
22h 42m
1 stop
Multiple Airlines Logo
9:30 pm - 8:03 am
CVG
-
ONT
13h 33m
1 stop
$245Multiple Airlines
Wed, Jul 22 - Mon, Jul 27
Frontier Logo
4:34 pm - 8:25 pm
ONT
-
CVG
24h 51m
1 stop
Frontier Logo
9:30 pm - 3:54 pm
CVG
-
ONT
21h 24m
1 stop
$258Frontier
Thu, Aug 6 - Thu, Aug 13
Multiple Airlines Logo
1:38 pm - 3:52 pm
ONT
-
CVG
23h 14m
1 stop
Multiple Airlines Logo
8:36 pm - 10:04 am
CVG
-
ONT
16h 28m
1 stop
$260Multiple Airlines
Wed, Jul 22 - Tue, Jul 28
Frontier Logo
4:34 pm - 8:25 pm
ONT
-
CVG
24h 51m
1 stop
Frontier Logo
9:30 pm - 3:54 pm
CVG
-
ONT
21h 24m
1 stop
$264Frontier
Thu, Aug 6 - Thu, Aug 13
Frontier Logo
3:34 pm - 7:35 pm
ONT
-
CVG
25h 01m
1 stop
Frontier Logo
8:40 pm - 3:09 pm
CVG
-
ONT
21h 29m
1 stop
$271Frontier
Tue, Aug 18 - Mon, Aug 24
Multiple Airlines Logo
6:00 am - 12:31 pm
ONT
-
CVG
27h 31m
1 stop
Multiple Airlines Logo
8:36 pm - 10:04 am
CVG
-
ONT
16h 28m
1 stop
$272Multiple Airlines
Wed, Jul 22 - Tue, Jul 28
Frontier Logo
8:07 am - 11:59 pm
ONT
-
CVG
12h 52m
1 stop
Frontier Logo
6:05 am - 10:43 am
CVG
-
ONT
7h 38m
1 stop
$277Frontier
Wed, Sep 30 - Sat, Oct 10
Frontier Logo
1:38 pm - 8:25 pm
ONT
-
CVG
27h 47m
1 stop
Frontier Logo
8:36 pm - 10:04 am
CVG
-
ONT
16h 28m
1 stop
$284Frontier
Wed, Jul 22 - Tue, Jul 28
Multiple Airlines Logo
1:38 pm - 3:52 pm
ONT
-
CVG
23h 14m
1 stop
Multiple Airlines Logo
8:36 pm - 10:04 am
CVG
-
ONT
16h 28m
1 stop
$287Multiple Airlines
Wed, Jul 22 - Tue, Jul 28
Frontier Logo
10:49 am - 11:13 am
ONT
-
CVG
21h 24m
2 stops
Frontier Logo
9:30 pm - 8:03 am
CVG
-
ONT
13h 33m
1 stop
$289Frontier
Wed, Jul 22 - Mon, Jul 27

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Frontier flights from Ontario to Cincinnati

Our best Frontier deals on Ontario to Cincinnati flight tickets
Frontier
Aug 6
ONT4:34 pmOntario
24h 51m
1 stop
CVG8:25 pmCincinnati Cinci./N. Kentucky
Aug 13
CVG9:30 pmCincinnati Cinci./N. Kentucky
21h 24m
1 stop
ONT3:54 pmOntario
$258
Frontier
Aug 6
ONT4:34 pmOntario
24h 51m
1 stop
CVG8:25 pmCincinnati Cinci./N. Kentucky
Aug 13
CVG9:30 pmCincinnati Cinci./N. Kentucky
21h 24m
1 stop
ONT3:54 pmOntario
$264
Frontier
Aug 18
ONT3:34 pmOntario
25h 01m
1 stop
CVG7:35 pmCincinnati Cinci./N. Kentucky
Aug 24
CVG8:40 pmCincinnati Cinci./N. Kentucky
21h 29m
1 stop
ONT3:09 pmOntario
$271

Alaska Airlines flights from Ontario to Cincinnati

Our best Alaska Airlines deals on Ontario to Cincinnati flight tickets
Alaska Airlines
Jun 28
ONT6:02 amOntario
20h 28m
1 stop
CVG5:30 amCincinnati Cinci./N. Kentucky
Jun 30
CVG1:38 pmCincinnati Cinci./N. Kentucky
13h 13m
2 stops
ONT11:51 pmOntario
$792
Alaska Airlines
Jun 28
ONT7:00 amOntario
23h 35m
2 stops
CVG9:35 amCincinnati Cinci./N. Kentucky
Jun 30
CVG1:38 pmCincinnati Cinci./N. Kentucky
13h 13m
2 stops
ONT11:51 pmOntario
$798
Alaska Airlines
Jun 29
ONT5:26 pmOntario
9h 04m
1 stop
CVG5:30 amCincinnati Cinci./N. Kentucky
Jul 7
CVG7:00 amCincinnati Cinci./N. Kentucky
9h 09m
1 stop
ONT1:09 pmOntario
$805

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 June 16, 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

Wed 7/22

10:49 am-12:31 pm

1 stop22h 42m

Cincinnati Cinci./N. Kentucky

Mon 7/27

9:30 pm-8:03 am

1 stop13h 33m

$245

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Thu 8/6

4:34 pm-8:25 pm

1 stop24h 51m

Cincinnati Cinci./N. Kentucky

Thu 8/13

9:30 pm-3:54 pm

1 stop21h 24m

$258

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 7/22

1:38 pm-3:52 pm

1 stop23h 14m

Cincinnati Cinci./N. Kentucky

Tue 7/28

8:36 pm-10:04 am

1 stop16h 28m

$260

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Thu 8/6

4:34 pm-8:25 pm

1 stop24h 51m

Cincinnati Cinci./N. Kentucky

Thu 8/13

9:30 pm-3:54 pm

1 stop21h 24m

$264

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Tue 8/18

3:34 pm-7:35 pm

1 stop25h 01m

Cincinnati Cinci./N. Kentucky

Mon 8/24

8:40 pm-3:09 pm

1 stop21h 29m

$271

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 7/22

6:00 am-12:31 pm

1 stop27h 31m

Cincinnati Cinci./N. Kentucky

Tue 7/28

8:36 pm-10:04 am

1 stop16h 28m

$272
Quickest round-trip

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 9/30

8:07 am-11:59 pm

1 stop12h 52m

Cincinnati Cinci./N. Kentucky

Sat 10/10

6:05 am-10:43 am

1 stop7h 38m

$277

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 7/22

1:38 pm-8:25 pm

1 stop27h 47m

Cincinnati Cinci./N. Kentucky

Tue 7/28

8:36 pm-10:04 am

1 stop16h 28m

$284

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 7/22

1:38 pm-3:52 pm

1 stop23h 14m

Cincinnati Cinci./N. Kentucky

Tue 7/28

8:36 pm-10:04 am

1 stop16h 28m

$287

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 7/22

10:49 am-11:13 am

2 stops21h 24m

Cincinnati Cinci./N. Kentucky

Mon 7/27

9:30 pm-8:03 am

1 stop13h 33m

$289

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 $326.

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

According to our data, Tuesday is the cheapest day to fly to Cincinnati from Ontario. The lowest ticket price found for a Tuesday departure recently was $359. 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 $498.

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 $252. 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 $413 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 $258 on momondo.

How have Ontario to Cincinnati flight prices changed over time?

As of June 2026, prices for Ontario to Cincinnati flights are approximately 4% 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 02m

Direct flights

None
The fastest flight from Ontario to Cincinnati takes 6h 02m
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 6h 02m.

  • 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
2,883 reviews
Search Frontier flights
American AirlinesPriceFrom $278Free CancellationRating
7.1
11,666 reviews
Search American Airlines flights
DeltaPriceFrom $297Free CancellationRating
7.9
8,405 reviews
Search Delta flights
United AirlinesPriceFrom $304Free CancellationRating
7.4
9,842 reviews
Search United Airlines flights
SouthwestPriceFrom $312Free CancellationRating
7.9
4,237 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
Middletown
Williamstown
Lawrenceburg
West Chester
Blue Ash
Fairfield
Oxford
Hebron
Monroe
Dry Ridge
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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