Which airport is the most popular layover for flights between Cincinnati and Ontario?

Dallas (DFW) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Cincinnati Cinci./N. Kentucky to Ontario?

Frontier, Delta, and United Airlines are the most popular carriers operating from Cincinnati Cinci./N. Kentucky to Ontario

What airlines fly to Ontario?

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to Ontario from Cincinnati according to our data. Delta is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Cincinnati to Ontario?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 23m.

Which layover airport offers the lowest fares from Cincinnati to Ontario?

Flights via Denver (DEN) offer the lowest average round-trip price of $486.

Which layover airport has the shortest connection time from Cincinnati to Ontario?

Salt Lake City (SLC) has the shortest average layover time for this route: 1h 01m.

When did momondo last update prices for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport?

Prices for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport are updated daily.

How many operators does momondo search for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport?

As of September 2026, there are 4 operators available to choose from for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport.

How old do you have to be to fly from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$109 Cheap Flights from Cincinnati to Ontario in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Cincinnati to Los Angeles

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One-way

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4:32 pm - 11:50 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

10h 18m1 stop Denver Intl

11:52 am - 10:19 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

19h 27m2 stops Denver Intl Atlanta Hartsfield-Jackson

$237Frontier

Sat, Oct 24 - Sat, Oct 31

4:32 pm - 11:51 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

10h 19m1 stop Denver Intl

6:25 am - 3:22 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

5h 57m1 stop Denver Intl

$239Frontier

Wed, Nov 4 - Mon, Nov 9

4:32 pm - 10:29 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

20h 57m1 stop Denver Intl

5:07 pm - 4:47 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

20h 40m1 stop Las Vegas Harry Reid Intl

$322Multiple Airlines

Fri, Oct 16 - Wed, Oct 28

8:34 pm - 10:29 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

16h 55m1 stop Denver Intl

2:13 pm - 9:09 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

27h 56m1 stop Seattle/Tacoma Intl

$347Multiple Airlines

Thu, Oct 22 - Thu, Oct 29

6:00 am - 11:55 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 55m1 stop Dallas/Fort Worth

11:59 pm - 10:54 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 55m1 stop Dallas/Fort Worth

$385American Airlines

Mon, Feb 8 - Mon, Feb 22

5:40 am - 9:44 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 04m1 stop Dallas/Fort Worth

7:00 am - 7:09 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

9h 09m1 stop Dallas/Fort Worth

$385American Airlines

Tue, Jan 5 - Sat, Jan 9

6:00 am - 11:03 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 03m1 stop Atlanta Hartsfield-Jackson

6:00 am - 3:22 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 22m1 stop Salt Lake City

$385Delta

Thu, Nov 12 - Tue, Nov 17

5:09 pm - 9:57 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 48m1 stop Atlanta Hartsfield-Jackson

11:10 pm - 8:54 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 44m1 stop Atlanta Hartsfield-Jackson

$385Delta

Thu, Nov 12 - Mon, Nov 16

7:00 am - 12:29 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 29m1 stop San Francisco

1:29 pm - 10:40 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 11m1 stop Denver Intl

$500United Airlines

Sat, Oct 31 - Tue, Nov 3

7:00 am - 12:29 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 29m1 stop San Francisco

6:00 am - 3:51 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 51m1 stop Houston George Bush Intcntl

$500United Airlines

Tue, Oct 27 - Tue, Nov 3

Cheap last minute flights

Enter your travel dates to find the best prices.

5:16 pm - 11:47 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

9h 31m1 stop Denver Intl

6:15 am - 7:29 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

10h 14m1 stop Denver Intl

$469Frontier

Thu, Oct 1 - Thu, Oct 15

5:16 pm - 11:47 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

9h 31m1 stop Denver Intl

8:35 pm - 6:04 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 29m1 stop Las Vegas Harry Reid Intl

$474Frontier

Mon, Oct 5 - Thu, Oct 8

5:53 am - 12:06 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

9h 13m2 stops Charlotte Douglas Phoenix Sky Harbor Intl

1:05 pm - 10:10 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 05m1 stop Phoenix Sky Harbor Intl

$926American Airlines

Fri, Oct 2 - Mon, Oct 5

12:43 pm - 7:04 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

21h 21m3 stops Atlanta Hartsfield-Jackson Chicago O'Hare Intl Las Vegas Harry Reid Intl

5:33 pm - 6:07 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

21h 34m2 stops Dallas/Fort Worth Minneapolis St Paul

$926Multiple Airlines

Sat, Oct 3 - Sat, Oct 10

5:53 am - 12:06 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

9h 13m2 stops Charlotte Douglas Phoenix Sky Harbor Intl

1:05 pm - 12:56 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

8h 51m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

$931American Airlines

Fri, Oct 2 - Mon, Oct 5

10:50 am - 10:51 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

15h 01m2 stops Chicago O'Hare Intl San Francisco

4:03 pm - 9:20 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

14h 17m2 stops San Francisco Chicago O'Hare Intl

$959United Airlines

Fri, Oct 2 - Mon, Oct 5

9:00 am - 9:59 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

15h 59m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

8:03 am - 11:59 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

12h 56m2 stops San Francisco Chicago O'Hare Intl

$959United Airlines

Wed, Sep 30 - Sat, Oct 3

10:30 am - 7:03 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

11h 33m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl

6:02 am - 11:13 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

14h 11m2 stops Seattle/Tacoma Intl Chicago O'Hare Intl

$1,207Alaska Airlines

Fri, Oct 2 - Sat, Oct 10

6:00 am - 11:09 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 09m1 stop Atlanta Hartsfield-Jackson

10:00 pm - 8:55 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 55m1 stop Atlanta Hartsfield-Jackson

$1,428Delta

Thu, Oct 1 - Thu, Oct 1

6:17 am - 12:14 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 57m2 stops Detroit Metropolitan Wayne County Salt Lake City

10:00 pm - 8:55 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 55m1 stop Atlanta Hartsfield-Jackson

$1,987Delta

Thu, Oct 1 - Thu, Oct 1

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Frontier flights from Cincinnati to Ontario

Our best Frontier deals on Cincinnati to Ontario flight tickets

Frontier

Oct 24

CVG4:32 pmCincinnati Cinci./N. Kentucky

10h 18m

1 stop

ONT11:50 pmOntario

Oct 31

ONT11:52 amOntario

19h 27m

2 stops

CVG10:19 amCincinnati Cinci./N. Kentucky

$237

Frontier

Nov 4

CVG4:32 pmCincinnati Cinci./N. Kentucky

10h 19m

1 stop

ONT11:51 pmOntario

Nov 9

ONT6:25 amOntario

5h 57m

1 stop

CVG3:22 pmCincinnati Cinci./N. Kentucky

$239

Frontier

Nov 2

CVG2:59 pmCincinnati Cinci./N. Kentucky

35h 52m

2 stops

ONT11:51 pmOntario

Nov 10

ONT6:25 amOntario

29h 57m

1 stop

CVG3:22 pmCincinnati Cinci./N. Kentucky

$240

Delta flights from Cincinnati to Ontario

Our best Delta deals on Cincinnati to Ontario flight tickets

Delta

Oct 13

CVG7:00 amCincinnati Cinci./N. Kentucky

8h 36m

1 stop

ONT12:36 pmOntario

Oct 27

ONT1:35 pmOntario

6h 40m

1 stop

CVG11:15 pmCincinnati Cinci./N. Kentucky

$511

Delta

Oct 12

CVG7:30 pmCincinnati Cinci./N. Kentucky

7h 25m

1 stop

ONT11:55 pmOntario

Oct 27

ONT1:35 pmOntario

6h 40m

1 stop

CVG11:15 pmCincinnati Cinci./N. Kentucky

$552

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 10/24

4:32 pm-11:50 pm

1 stop10h 18m

Ontario

Sat 10/31

11:52 am-10:19 am

2 stops19h 27m

$237

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 11/4

4:32 pm-11:51 pm

1 stop10h 19m

Ontario

Mon 11/9

6:25 am-3:22 pm

1 stop5h 57m

$239

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 10/16

4:32 pm-10:29 am

1 stop20h 57m

Ontario

Wed 10/28

5:07 pm-4:47 pm

1 stop20h 40m

$322

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 10/22

8:34 pm-10:29 am

1 stop16h 55m

Ontario

Thu 10/29

2:13 pm-9:09 pm

1 stop27h 56m

$347

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 2/8

6:00 am-11:55 am

1 stop8h 55m

Ontario

Mon 2/22

11:59 pm-10:54 am

1 stop7h 55m

$385

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 1/5

5:40 am-9:44 am

1 stop7h 04m

Ontario

Sat 1/9

7:00 am-7:09 pm

1 stop9h 09m

$385

Quickest round-trip

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 11/12

6:00 am-11:03 am

1 stop8h 03m

Ontario

Tue 11/17

6:00 am-3:22 pm

1 stop6h 22m

$385

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 11/12

5:09 pm-9:57 pm

1 stop7h 48m

Ontario

Mon 11/16

11:10 pm-8:54 am

1 stop6h 44m

$385

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 10/31

7:00 am-12:29 pm

1 stop8h 29m

Ontario

Tue 11/3

1:29 pm-10:40 pm

1 stop6h 11m

$500

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 10/27

7:00 am-12:29 pm

1 stop8h 29m

Ontario

Tue 11/3

6:00 am-3:51 pm

1 stop6h 51m

$500

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Cincinnati to Ontario

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

Prices

Airlines

Layovers

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

Prices are currently low for flights on this route.

Typical prices usually range from $278 to $532.
The lowest price recently found on this route was $237.

What is the cheapest month to fly to Ontario?

In general, January is the cheapest month to fly from Cincinnati to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $336. If you aren’t able to travel during the month of January, then book flights to Ontario from Cincinnati during July instead. Flights to Ontario in July, while not as cheap as those in January, still average around $358.

How have Cincinnati to Ontario flight prices changed over time?

As of September 2026, prices for Cincinnati to Ontario flights are approximately 54% more expensive when compared to flights at the same time last year.

When to book flights from Cincinnati to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Cincinnati to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Cincinnati to Ontario (CVG to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cincinnati to Ontario

Best Price Found	$109
Fastest flight time	7h 09m
Direct flights	None

The best one-way flight to Ontario from Cincinnati in the past 72 hours is $109. The best round-trip flight deal from Cincinnati to Ontario found on momondo in the last 72 hours is $237.

The fastest flight from Cincinnati to Ontario takes 7h 09m

There are no direct flights from Cincinnati to Ontario. There are no popular flight routes from Cincinnati to Ontario.

Search flight deals

Frequently asked questions about flying from Cincinnati to Ontario

How far is Cincinnati Cinci./N. Kentucky to Ontario by plane?
The distance between Cincinnati Cinci./N. Kentucky and Ontario is about 1859.2 mi. In terms of flight time, this usually takes a little over 7h 09m.
When did momondo last update prices for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport?
Prices for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport?
As of September 2026, there are 4 operators available to choose from for flights from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport.
How old do you have to be to fly from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Cincinnati Cinci./N. Kentucky Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Cincinnati to Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Cincinnati to Ontario is American Airlines (33% of total bookings). The next most popular airlines are Frontier (31%), Delta (23%), and United Airlines (13%).

Best airlines flying from Cincinnati to Ontario

Compare and see reviews for airlines that fly from Cincinnati to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $187	Free Cancellation	Rating 5.6 2,568 reviews	Search Frontier flights
Delta	PriceFrom $277	Free Cancellation	Rating 7.8 8,610 reviews	Search Delta flights
American Airlines	PriceFrom $336	Free Cancellation	Rating 7.0 12,096 reviews	Search American Airlines flights
United Airlines	PriceFrom $373	Free Cancellation	Rating 7.4 10,252 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Cincinnati to Ontario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Cincinnati to Ontario for you.

Can I find flights from Cincinnati to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Cincinnati to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Cincinnati to Ontario?

momondo helps you find the best flight between Cincinnati and Ontario 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 Cincinnati to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from Cincinnati. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ontario 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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Cheap flights from Cincinnati to Los Angeles from $109

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cincinnati to Los Angeles departing on 10/28. 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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Frontier flights from Cincinnati to Ontario

Our best Frontier deals on Cincinnati to Ontario flight tickets

Delta flights from Cincinnati to Ontario

Our best Delta deals on Cincinnati to Ontario flight tickets

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How to get the cheapest flight ticket from Cincinnati to Ontario

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

What is the cheapest month to fly to Ontario?

How have Cincinnati to Ontario flight prices changed over time?

What is the cheapest airline that flies from Cincinnati Cinci./N. Kentucky to Ontario?

What airlines fly to Ontario?

Which airport is the most popular layover for flights between Cincinnati and Ontario?

Which layover airport offers the lowest fares from Cincinnati to Ontario?

Which layover airport has the shortest travel time from Cincinnati to Ontario?

Which layover airport has the shortest connection time from Cincinnati to Ontario?

When to book flights from Cincinnati to Ontario

Cheap Cincinnati to Ontario (CVG to ONT) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Cincinnati to Ontario

Best airlines flying from Cincinnati to Ontario

Compare and see reviews for airlines that fly from Cincinnati to Ontario with momondo

Why use momondo?

An easier way to manage your Ontario 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California

Fly your favorite airline to Los Angeles

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Los Angeles

List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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