Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Cincinnati from $89

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 9/16. 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
11:45 am - 4:11 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
25h 26m1 stop Denver Intl
Frontier Logo
5:16 pm - 10:30 amCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
20h 14m1 stop Denver Intl
$200Frontier
Mon, Sep 14 - Tue, Sep 29
Frontier Logo
6:15 am - 4:11 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 56m1 stop Denver Intl
Frontier Logo
12:43 pm - 11:47 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
38h 04m2 stops Atlanta Hartsfield-Jackson Denver Intl
$203Frontier
Wed, Sep 9 - Fri, Sep 11
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
Delta Logo
1:25 pm - 11:07 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 42m1 stop Salt Lake City
Delta Logo
7:35 pm - 11:58 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
7h 23m1 stop Salt Lake City
$317Delta
Mon, Nov 23 - Wed, Dec 2
Delta Logo
11:15 pm - 8:54 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 39m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:30 pm - 11:55 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
7h 25m1 stop Salt Lake City
$317Delta
Mon, Oct 12 - Mon, Oct 19
American Airlines Logo
1:04 pm - 12:41 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
8h 37m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl
American Airlines Logo
6:00 am - 9:29 amCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
6h 29m1 stop Dallas/Fort Worth
$322American Airlines
Thu, Sep 17 - Tue, Sep 29
Multiple Airlines Logo
8:35 pm - 6:07 amONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 32m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
7:30 am - 7:04 amCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
26h 34m1 stop Las Vegas Harry Reid Intl
$324Multiple Airlines
Thu, Oct 15 - Sun, Oct 18
Multiple Airlines Logo
7:12 am - 11:25 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
13h 13m2 stops Portland Dallas/Fort Worth
Multiple Airlines Logo
8:45 am - 9:09 amCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
27h 24m1 stop Las Vegas Harry Reid Intl
$329Multiple Airlines
Sat, Sep 12 - Mon, Sep 14
United Airlines Logo
7:00 am - 7:18 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
9h 18m1 stop Chicago O'Hare Intl
United Airlines Logo
7:00 am - 12:29 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
8h 29mnonstop
$352United Airlines
Tue, Nov 3 - Wed, Nov 18
United Airlines Logo
5:00 am - 2:19 pmONT  Ontario-CVG Cincinnati Cinci./N. Kentucky
6h 19m1 stop Denver Intl
United Airlines Logo
4:53 pm - 9:40 pmCVG  Cincinnati Cinci./N. Kentucky-ONT Ontario
7h 47m1 stop Houston George Bush Intcntl
$417United Airlines
Wed, Oct 28 - Wed, Nov 4

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Frontier flights from Ontario to Cincinnati

Our best Frontier deals on Ontario to Cincinnati flight tickets
Frontier
Sep 14
ONT11:45 amOntario
25h 26m
1 stop
CVG4:11 pmCincinnati Cinci./N. Kentucky
Sep 29
CVG5:16 pmCincinnati Cinci./N. Kentucky
20h 14m
1 stop
ONT10:30 amOntario
$200
Frontier
Sep 9
ONT6:15 amOntario
6h 56m
1 stop
CVG4:11 pmCincinnati Cinci./N. Kentucky
Sep 11
CVG12:43 pmCincinnati Cinci./N. Kentucky
38h 04m
2 stops
ONT11:47 pmOntario
$203
Frontier
Sep 14
ONT11:45 amOntario
16h 02m
2 stops
CVG6:47 amCincinnati Cinci./N. Kentucky
Sep 29
CVG5:16 pmCincinnati Cinci./N. Kentucky
20h 14m
1 stop
ONT10:30 amOntario
$212

United Airlines flights from Ontario to Cincinnati

Our best United Airlines deals on Ontario to Cincinnati flight tickets
United Airlines
Aug 31
ONT5:00 amOntario
11h 12m
2 stops
CVG7:12 pmCincinnati Cinci./N. Kentucky
Sep 2
CVG3:25 pmCincinnati Cinci./N. Kentucky
8h 29m
1 stop
ONT8:54 pmOntario
$494
United Airlines
Aug 31
ONT5:00 amOntario
8h 55m
2 stops
CVG4:55 pmCincinnati Cinci./N. Kentucky
Sep 5
CVG2:05 pmCincinnati Cinci./N. Kentucky
9h 48m
2 stops
ONT8:53 pmOntario
$498
United Airlines
Aug 31
ONT1:18 pmOntario
6h 12m
1 stop
CVG10:30 pmCincinnati Cinci./N. Kentucky
Sep 3
CVG8:00 amCincinnati Cinci./N. Kentucky
7h 50m
1 stop
ONT12:50 pmOntario
$601

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 17, 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

Mon 9/14

11:45 am-4:11 pm

1 stop25h 26m

Cincinnati Cinci./N. Kentucky

Tue 9/29

5:16 pm-10:30 am

1 stop20h 14m

$200

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Wed 9/9

6:15 am-4:11 pm

1 stop6h 56m

Cincinnati Cinci./N. Kentucky

Fri 9/11

12:43 pm-11:47 pm

2 stops38h 04m

$203

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

Mon 11/23

1:25 pm-11:07 pm

1 stop6h 42m

Cincinnati Cinci./N. Kentucky

Wed 12/2

7:35 pm-11:58 pm

1 stop7h 23m

$317
Quickest round-trip

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Mon 10/12

11:15 pm-8:54 am

1 stop6h 39m

Cincinnati Cinci./N. Kentucky

Mon 10/19

7:30 pm-11:55 pm

1 stop7h 25m

$317

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Thu 9/17

1:04 pm-12:41 am

2 stops8h 37m

Cincinnati Cinci./N. Kentucky

Tue 9/29

6:00 am-9:29 am

1 stop6h 29m

$322

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Thu 10/15

8:35 pm-6:07 am

1 stop6h 32m

Cincinnati Cinci./N. Kentucky

Sun 10/18

7:30 am-7:04 am

1 stop26h 34m

$324

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Sat 9/12

7:12 am-11:25 pm

2 stops13h 13m

Cincinnati Cinci./N. Kentucky

Mon 9/14

8:45 am-9:09 am

1 stop27h 24m

$329

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Tue 11/3

7:00 am-7:18 pm

1 stop9h 18m

Cincinnati Cinci./N. Kentucky

Wed 11/18

7:00 am-12:29 pm

Nonstop8h 29m

$352

OntarioCincinnati

ONT Ontario - CVG Cincinnati Cinci./N. Kentucky

ONTCVG

Ontario

Wed 10/28

5:00 am-2:19 pm

1 stop6h 19m

Cincinnati Cinci./N. Kentucky

Wed 11/4

4:53 pm-9:40 pm

1 stop7h 47m

$417

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $412.
The lowest price recently found on this route was $200.

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 $388. 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 $539.

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 $430 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

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
2,682 reviews
Search Frontier flights
American AirlinesPriceFrom $299Free CancellationRating
7.1
11,950 reviews
Search American Airlines flights
DeltaPriceFrom $303Free CancellationRating
7.8
8,502 reviews
Search Delta flights
United AirlinesPriceFrom $304Free CancellationRating
7.4
10,104 reviews
Search United Airlines flights
SouthwestPriceFrom $312Free CancellationRating
8.0
4,217 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
Fairfield
Blue Ash
Williamstown
Lawrenceburg
Oxford
Hebron
Monroe
Dry Ridge
Trenton
Corinth
Bethel
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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 9/16
Wed 9/23
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States