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Cheap flights from Ontario to Cincinnati from $127

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 9/1. 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.
Frontier Logo
7:46 pm - 9:48 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
11h 02m1 stop Dallas/Fort Worth
Frontier Logo
11:09 am - 4:46 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
8h 37m1 stop Dallas/Fort Worth
$218Frontier
Thu, Sep 10 - Sat, Sep 12
Frontier Logo
6:15 am - 4:11 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 56m1 stop Denver Intl
Frontier Logo
5:16 pm - 11:47 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
9h 31m1 stop Denver Intl
$218Frontier
Sat, Sep 12 - Sat, Sep 19
American Airlines Logo
7:00 am - 6:45 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
8h 45m1 stop Dallas/Fort Worth
American Airlines Logo
7:35 pm - 11:52 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
7h 17m1 stop Dallas/Fort Worth
$317American Airlines
Tue, Oct 13 - Sat, Oct 17
American Airlines Logo
1:23 pm - 10:59 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 36m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
7:28 am - 12:38 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
8h 10m1 stop Phoenix Sky Harbor Intl
$317American Airlines
Tue, Nov 17 - Tue, Dec 8
Delta Logo
10:00 pm - 8:55 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
7h 55m1 stop Atlanta Hartsfield-Jackson
Delta Logo
3:00 pm - 6:41 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
6h 41m1 stop Atlanta Hartsfield-Jackson
$317Delta
Thu, Sep 24 - Sat, Sep 26
Delta Logo
10:00 pm - 8:55 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
7h 55m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:26 am - 12:14 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
7h 48m1 stop Salt Lake City
$317Delta
Mon, Sep 21 - Tue, Sep 29
Multiple Airlines Logo
9:16 am - 6:26 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 10m1 stop Dallas/Fort Worth
Multiple Airlines Logo
8:30 am - 2:47 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
9h 17m1 stop Seattle/Tacoma Intl
$334Multiple Airlines
Wed, Dec 9 - Wed, Dec 16
Multiple Airlines Logo
2:55 pm - 12:29 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 34m1 stop Denver Intl
Multiple Airlines Logo
7:30 am - 1:31 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
9h 01m1 stop Las Vegas Harry Reid Intl
$382Multiple Airlines
Thu, Oct 15 - Sun, Oct 18
Southwest Logo
5:50 am - 5:40 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
8h 50m2 stops Las Vegas Harry Reid Intl Chicago Midway
Southwest Logo
2:20 pm - 9:00 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
9h 40m2 stops Denver Intl Las Vegas Harry Reid Intl
$412Southwest
Sat, Sep 5 - Tue, Sep 15
Southwest Logo
9:30 pm - 9:55 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
9h 25m2 stops Las Vegas Harry Reid Intl Chicago Midway
Southwest Logo
6:50 am - 11:20 amCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
7h 30m1 stop Nashville Intl
$435Southwest
Thu, Oct 15 - Sun, Oct 18

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Frontier flights from Ontario to Cincinnati

Our best Frontier deals on Ontario to Cincinnati flight tickets
Frontier
Sep 10
ONT7:46 pmOntario
11h 02m
1 stop
CVG9:48 amCincinnati Cinci./N. Kentucky
Sep 12
CVG11:09 amCincinnati Cinci./N. Kentucky
8h 37m
1 stop
ONT4:46 pmOntario
$218
Frontier
Sep 1
ONT6:00 amOntario
10h 35m
1 stop
CVG7:35 pmCincinnati Cinci./N. Kentucky
Sep 5
CVG8:30 pmCincinnati Cinci./N. Kentucky
6h 20m
1 stop
ONT11:50 pmOntario
$242
Frontier
Aug 31
ONT6:00 amOntario
10h 25m
1 stop
CVG7:25 pmCincinnati Cinci./N. Kentucky
Sep 5
CVG8:30 pmCincinnati Cinci./N. Kentucky
6h 20m
1 stop
ONT11:50 pmOntario
$246

Delta flights from Ontario to Cincinnati

Our best Delta deals on Ontario to Cincinnati flight tickets
Delta
Sep 21
ONT10:00 pmOntario
7h 55m
1 stop
CVG8:55 amCincinnati Cinci./N. Kentucky
Sep 29
CVG7:26 amCincinnati Cinci./N. Kentucky
7h 48m
1 stop
ONT12:14 pmOntario
$317
Delta
Sep 25
ONT12:19 pmOntario
7h 24m
1 stop
CVG10:43 pmCincinnati Cinci./N. Kentucky
Sep 26
CVG3:00 pmCincinnati Cinci./N. Kentucky
6h 41m
1 stop
ONT6:41 pmOntario
$362
Delta
Aug 24
ONT12:00 pmOntario
9h 25m
1 stop
CVG12:25 amCincinnati Cinci./N. Kentucky
Sep 8
CVG1:30 pmCincinnati Cinci./N. Kentucky
9h 54m
1 stop
ONT8:24 pmOntario
$489

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 August 11, 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 Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Thu 9/10

7:46 pm-9:48 am

1 stop11h 02m

Cincinnati Cinci./N. Kentucky

Sat 9/12

11:09 am-4:46 pm

1 stop8h 37m

$218

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Sat 9/12

6:15 am-4:11 pm

1 stop6h 56m

Cincinnati Cinci./N. Kentucky

Sat 9/19

5:16 pm-11:47 pm

1 stop9h 31m

$218

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Tue 10/13

7:00 am-6:45 pm

1 stop8h 45m

Cincinnati Cinci./N. Kentucky

Sat 10/17

7:35 pm-11:52 pm

1 stop7h 17m

$317

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Tue 11/17

1:23 pm-10:59 pm

1 stop6h 36m

Cincinnati Cinci./N. Kentucky

Tue 12/8

7:28 am-12:38 pm

1 stop8h 10m

$317
Quickest round-trip

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Thu 9/24

10:00 pm-8:55 am

1 stop7h 55m

Cincinnati Cinci./N. Kentucky

Sat 9/26

3:00 pm-6:41 pm

1 stop6h 41m

$317

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Mon 9/21

10:00 pm-8:55 am

1 stop7h 55m

Cincinnati Cinci./N. Kentucky

Tue 9/29

7:26 am-12:14 pm

1 stop7h 48m

$317

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Wed 12/9

9:16 am-6:26 pm

1 stop6h 10m

Cincinnati Cinci./N. Kentucky

Wed 12/16

8:30 am-2:47 pm

1 stop9h 17m

$334

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Thu 10/15

2:55 pm-12:29 am

1 stop6h 34m

Cincinnati Cinci./N. Kentucky

Sun 10/18

7:30 am-1:31 pm

1 stop9h 01m

$382

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Sat 9/5

5:50 am-5:40 pm

2 stops8h 50m

Cincinnati Cinci./N. Kentucky

Tue 9/15

2:20 pm-9:00 pm

2 stops9h 40m

$412

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Thu 10/15

9:30 pm-9:55 am

2 stops9h 25m

Cincinnati Cinci./N. Kentucky

Sun 10/18

6:50 am-11:20 am

1 stop7h 30m

$435

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?

Prices are currently low for flights on this route.

Typical prices usually range from $335 to $442.
The lowest price recently found on this route was $218.

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 $345. If you aren’t able to travel to Cincinnati during the month of October, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $360.

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 $382. 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, Sunday 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 $515.

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 in the afternoon. Flights from Ontario to Cincinnati during this time can be as low as $368. In the evening 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 $427 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 $269 on momondo.

How have Ontario to Cincinnati flight prices changed over time?

As of August 2026, prices for Ontario to Cincinnati flights are approximately 32% 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 49m

Direct flights

None
The fastest flight from Ontario to Cincinnati takes 5h 49m
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 49m.

  • 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
2,707 reviews
Search Frontier flights
American AirlinesPriceFrom $299Free CancellationRating
7.1
11,902 reviews
Search American Airlines flights
DeltaPriceFrom $303Free CancellationRating
7.8
8,506 reviews
Search Delta flights
United AirlinesPriceFrom $304Free CancellationRating
7.4
10,102 reviews
Search United Airlines flights
SouthwestPriceFrom $312Free CancellationRating
8.0
4,218 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
Sharonville
Newport
Covington
Middletown
West Chester
Blue Ash
Fairfield
Williamstown
Lawrenceburg
Oxford
Hebron
Monroe
Dry Ridge
Trenton
Bethel
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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