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.

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

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

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.

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 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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.

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.

$126 Cheap Flights from Cincinnati to Ontario in 2026

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Find the cheapest flights from Cincinnati to Los Angeles

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One-way

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Cheap round-trip 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

8:24 pm - 6:47 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 23m1 stop Las Vegas Harry Reid Intl

$261Frontier

Wed, Sep 30 - Mon, Oct 5

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

9h 31m1 stop Denver Intl

6:45 pm - 11:38 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

37h 53m2 stops Houston George Bush Intcntl Atlanta Hartsfield-Jackson

$263Frontier

Wed, Sep 30 - Mon, Oct 5

9:36 am - 7:28 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

12h 52m1 stop San Francisco

8:35 pm - 11:43 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

36h 08m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson

$342Multiple Airlines

Thu, Nov 5 - Mon, Nov 9

7:20 am - 7:07 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

26h 47m1 stop Las Vegas Harry Reid Intl

7:11 am - 4:12 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

30h 01m2 stops San Francisco Las Vegas Harry Reid Intl

$343Multiple Airlines

Sun, Nov 22 - Wed, Dec 2

4:36 pm - 9:57 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 21m1 stop Phoenix Sky Harbor Intl

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 - 9:35 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

6h 35m1 stop Dallas/Fort Worth

7:00 am - 6:45 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

8h 45m1 stop Dallas/Fort Worth

$385American Airlines

Thu, Oct 8 - Sat, Oct 17

7:30 pm - 11:55 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 25m1 stop Salt Lake City

6:00 am - 3:15 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 15m1 stop Salt Lake City

$385Delta

Wed, Oct 21 - Tue, Oct 27

7:30 pm - 11:55 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 25m1 stop Salt Lake City

6:00 am - 3:15 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 15m1 stop Salt Lake City

$385Delta

Thu, Oct 22 - Tue, Oct 27

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

8h 29m1 stop San Francisco

5:00 am - 5:04 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

9h 04m2 stops Denver Intl Chicago O'Hare Intl

$386United Airlines

Mon, Nov 23 - Wed, Dec 2

7:00 am - 12:30 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 30m2 stops Chicago O'Hare Intl Denver Intl

5:00 am - 5:25 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

9h 25m2 stops Denver Intl Chicago O'Hare Intl

$461United Airlines

Thu, Oct 29 - Sun, Nov 1

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

8:24 pm - 6:47 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 23m1 stop Las Vegas Harry Reid Intl

$380Frontier

Fri, Sep 18 - Fri, Sep 25

8:45 am - 4:59 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

11h 14m1 stop Las Vegas Harry Reid Intl

5:31 pm - 9:48 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

13h 17m1 stop Dallas/Fort Worth

$380Frontier

Tue, Sep 15 - Tue, Sep 22

9:36 am - 7:36 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

13h 00m1 stop San Francisco

12:07 pm - 8:17 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

29h 10m1 stop San Francisco

$446Multiple Airlines

Thu, Sep 17 - Mon, Sep 21

9:36 am - 7:36 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

13h 00m1 stop San Francisco

8:24 pm - 11:38 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

36h 14m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson

$525Multiple Airlines

Thu, Sep 17 - Mon, Sep 21

11:17 am - 10:51 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

14h 34m2 stops Chicago O'Hare Intl San Francisco

1:24 pm - 10:49 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 25m1 stop Denver Intl

$828United Airlines

Fri, Sep 18 - Fri, Sep 25

11:17 am - 10:51 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

14h 34m2 stops Chicago O'Hare Intl San Francisco

1:24 pm - 10:49 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 25m1 stop Denver Intl

$849United Airlines

Fri, Sep 18 - Fri, Sep 25

11:17 am - 6:17 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

10h 00m2 stops Charlotte Douglas Phoenix Sky Harbor Intl

1:04 pm - 12:41 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

8h 37m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

$867American Airlines

Fri, Sep 18 - Fri, Sep 25

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

9h 13m2 stops Charlotte Douglas Phoenix Sky Harbor Intl

12:37 pm - 11:25 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 48m1 stop Dallas/Fort Worth

$882American Airlines

Fri, Sep 18 - Fri, Sep 25

7:05 am - 11:05 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 00m1 stop Atlanta Hartsfield-Jackson

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

7h 55m1 stop Atlanta Hartsfield-Jackson

$1,083Delta

Sun, Sep 13 - Sun, Sep 13

7:30 pm - 11:47 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 17m1 stop Salt Lake City

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

7h 55m1 stop Atlanta Hartsfield-Jackson

$1,421Delta

Fri, Sep 18 - Mon, Sep 28

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Frontier flights from Cincinnati to Ontario

Our best Frontier deals on Cincinnati to Ontario flight tickets

Frontier

Sep 30

CVG5:16 pmCincinnati Cinci./N. Kentucky

9h 31m

1 stop

ONT11:47 pmOntario

Oct 5

ONT8:24 pmOntario

7h 23m

1 stop

CVG6:47 amCincinnati Cinci./N. Kentucky

$261

Frontier

Sep 30

CVG5:16 pmCincinnati Cinci./N. Kentucky

9h 31m

1 stop

ONT11:47 pmOntario

Oct 5

ONT6:45 pmOntario

37h 53m

2 stops

CVG11:38 amCincinnati Cinci./N. Kentucky

$263

Frontier

Nov 6

CVG4:32 pmCincinnati Cinci./N. Kentucky

21h 10m

1 stop

ONT10:42 amOntario

Nov 14

ONT6:25 amOntario

5h 56m

1 stop

CVG3:21 pmCincinnati Cinci./N. Kentucky

$265

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 9/30

5:16 pm-11:47 pm

1 stop9h 31m

Ontario

Mon 10/5

8:24 pm-6:47 am

1 stop7h 23m

$261

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 9/30

5:16 pm-11:47 pm

1 stop9h 31m

Ontario

Mon 10/5

6:45 pm-11:38 am

2 stops37h 53m

$263

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 11/5

9:36 am-7:28 pm

1 stop12h 52m

Ontario

Mon 11/9

8:35 pm-11:43 am

2 stops36h 08m

$342

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sun 11/22

7:20 am-7:07 am

1 stop26h 47m

Ontario

Wed 12/2

7:11 am-4:12 pm

2 stops30h 01m

$343

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 1/5

4:36 pm-9:57 pm

1 stop8h 21m

Ontario

Sat 1/9

7:00 am-7:09 pm

1 stop9h 09m

$385

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 10/8

6:00 am-9:35 am

1 stop6h 35m

Ontario

Sat 10/17

7:00 am-6:45 pm

1 stop8h 45m

$385

Quickest round-trip

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 10/21

7:30 pm-11:55 pm

1 stop7h 25m

Ontario

Tue 10/27

6:00 am-3:15 pm

1 stop6h 15m

$385

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 10/22

7:30 pm-11:55 pm

1 stop7h 25m

Ontario

Tue 10/27

6:00 am-3:15 pm

1 stop6h 15m

$385

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 11/23

7:00 am-12:29 pm

1 stop8h 29m

Ontario

Wed 12/2

5:00 am-5:04 pm

2 stops9h 04m

$386

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 10/29

7:00 am-12:30 pm

2 stops8h 30m

Ontario

Sun 11/1

5:00 am-5:25 pm

2 stops9h 25m

$461

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 typical for flights on this route.

Typical prices usually range from $162 to $490.
The lowest price recently found on this route was $261.

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 40% 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	$126
Fastest flight time	6h 53m
Direct flights	None

The best one-way flight to Ontario from Cincinnati in the past 72 hours is $126. The best round-trip flight deal from Cincinnati to Ontario found on momondo in the last 72 hours is $261.

The fastest flight from Cincinnati to Ontario takes 6h 53m

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

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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 6h 53m.
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 Frontier (32% of total bookings). The next most popular airlines are American Airlines (28%), Delta (28%), and United Airlines (12%).

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 $157	Free Cancellation	Rating 5.6 2,607 reviews	Search Frontier flights
American Airlines	PriceFrom $336	Free Cancellation	Rating 7.1 12,050 reviews	Search American Airlines flights
Delta	PriceFrom $337	Free Cancellation	Rating 7.8 8,565 reviews	Search Delta flights
United Airlines	PriceFrom $373	Free Cancellation	Rating 7.4 10,205 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

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Cheap flights from Cincinnati to Los Angeles from $126

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 11/15. 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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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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