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

Dallas (DFW) was the most common stop: 25% 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 is the most popular carrier operating from Cincinnati Cinci./N. Kentucky to Ontario

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

Flights connecting via Nashville (BNA) have the shortest average one-way travel time: 6h 20m.

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 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 October 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.

$128 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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:36 pm - 11:51 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

14h 15m2 stops Atlanta Hartsfield-Jackson Denver Intl

6:30 am - 9:19 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

23h 49m2 stops Denver Intl Atlanta Hartsfield-Jackson

$254Frontier

Wed, Nov 11 - Sat, Nov 14

7:02 pm - 10:45 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

18h 43m1 stop Denver Intl

6:00 am - 5:59 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

8h 59m1 stop Denver Intl

$258Frontier

Sat, Dec 5 - Sat, Dec 12

10:26 am - 7:44 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

24h 18m2 stops Atlanta Hartsfield-Jackson Dallas/Fort Worth

3:33 pm - 4:03 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

21h 30m1 stop Las Vegas Harry Reid Intl

$293Multiple Airlines

Sat, Dec 12 - Wed, Jan 6

7:02 pm - 10:45 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

18h 43m1 stop Denver Intl

7:00 am - 8:40 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

10h 40m1 stop Seattle/Tacoma Intl

$300Multiple Airlines

Sat, Dec 12 - Sat, Jan 9

7:26 am - 12:38 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 12m1 stop Phoenix Sky Harbor Intl

1:24 pm - 10:59 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 35m1 stop Phoenix Sky Harbor Intl

$329American Airlines

Sat, Dec 12 - Sat, Jan 9

7:40 am - 12:12 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 32m1 stop Dallas/Fort Worth

10:30 pm - 10:38 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

9h 08m1 stop Charlotte Douglas

$329American Airlines

Thu, Dec 3 - Mon, Dec 7

5:50 pm - 10:14 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 24m1 stop Atlanta Hartsfield-Jackson

7:00 am - 6:49 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

8h 49m1 stop Atlanta Hartsfield-Jackson

$329Delta

Tue, Feb 16 - Sat, Feb 20

5:50 pm - 10:14 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 24m1 stop Atlanta Hartsfield-Jackson

7:00 am - 5:21 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 21m1 stop Atlanta Hartsfield-Jackson

$329Delta

Sat, Jan 16 - Thu, Feb 18

3:17 pm - 9:11 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 54m1 stop Denver Intl

11:20 am - 9:50 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 30m1 stop San Francisco

$329United Airlines

Sat, Dec 12 - Sat, Jan 9

8:45 am - 12:40 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

6h 55m1 stop Denver Intl

6:00 am - 3:43 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 43m1 stop Houston George Bush Intcntl

$329United Airlines

Thu, Jan 28 - Thu, Feb 11

Cheap last minute flights

Enter your travel dates to find the best prices.

8:20 am - 9:40 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

28h 20m1 stop Las Vegas Harry Reid Intl

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

5h 57m1 stop Denver Intl

$398Frontier

Tue, Oct 27 - Fri, Oct 30

8:20 am - 4:21 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

11h 01m1 stop Las Vegas Harry Reid Intl

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

5h 57m1 stop Denver Intl

$420Frontier

Tue, Oct 27 - Fri, Oct 30

8:34 pm - 11:50 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

6h 16m1 stop Denver Intl

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

5h 57m1 stop Denver Intl

$420Frontier

Sun, Oct 25 - Wed, Oct 28

7:49 am - 12:14 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 25m1 stop Phoenix Sky Harbor Intl

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

6h 05m1 stop Phoenix Sky Harbor Intl

$872American Airlines

Sun, Oct 25 - Fri, Oct 30

6:00 am - 12:14 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

9h 14m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

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

6h 05m1 stop Phoenix Sky Harbor Intl

$906American Airlines

Tue, Oct 27 - Fri, Oct 30

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

7h 25m1 stop Salt Lake City

1:35 pm - 11:15 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 40m1 stop Salt Lake City

$925Delta

Mon, Oct 26 - Fri, Oct 30

8:55 am - 6:47 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

12h 52m1 stop Chicago O'Hare Intl

4:17 pm - 9:20 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

14h 03m2 stops San Francisco Chicago O'Hare Intl

$1,032United Airlines

Tue, Oct 27 - Fri, Oct 30

8:55 am - 8:51 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

14h 56m2 stops Chicago O'Hare Intl Denver Intl

4:17 pm - 9:20 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

14h 03m2 stops San Francisco Chicago O'Hare Intl

$1,037United Airlines

Tue, Oct 27 - Fri, Oct 30

11:58 am - 11:42 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

14h 44m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl

6:56 pm - 9:24 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

11h 28m2 stops Seattle/Tacoma Intl Chicago O'Hare Intl

$1,307Alaska Airlines

Fri, Oct 23 - Mon, Oct 26

6:19 am - 6:00 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

14h 41m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl

6:02 am - 9:09 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

12h 07m1 stop Seattle/Tacoma Intl

$1,365Alaska Airlines

Sat, Oct 24 - Sat, Oct 31

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Frontier flights from Cincinnati to Ontario

Our best Frontier deals on Cincinnati to Ontario flight tickets

Frontier

Nov 11

CVG12:36 pmCincinnati Cinci./N. Kentucky

14h 15m

2 stops

ONT11:51 pmOntario

Nov 14

ONT6:30 amOntario

23h 49m

2 stops

CVG9:19 amCincinnati Cinci./N. Kentucky

$254

Frontier

Dec 5

CVG7:02 pmCincinnati Cinci./N. Kentucky

18h 43m

1 stop

ONT10:45 amOntario

Dec 12

ONT6:00 amOntario

8h 59m

1 stop

CVG5:59 pmCincinnati Cinci./N. Kentucky

$258

Frontier

Nov 11

CVG4:32 pmCincinnati Cinci./N. Kentucky

10h 19m

1 stop

ONT11:51 pmOntario

Nov 14

ONT6:30 amOntario

5h 51m

1 stop

CVG3:21 pmCincinnati Cinci./N. Kentucky

$260

American Airlines flights from Cincinnati to Ontario

Our best American Airlines deals on Cincinnati to Ontario flight tickets

American Airlines

Jan 5

CVG5:40 amCincinnati Cinci./N. Kentucky

9h 19m

1 stop

ONT11:59 amOntario

Jan 9

ONT6:20 amOntario

10h 36m

2 stops

CVG7:56 pmCincinnati Cinci./N. Kentucky

$334

American Airlines

Jan 14

CVG11:26 amCincinnati Cinci./N. Kentucky

9h 50m

2 stops

ONT6:16 pmOntario

Jan 21

ONT6:00 amOntario

7h 16m

1 stop

CVG4:16 pmCincinnati Cinci./N. Kentucky

$358

American Airlines

Dec 3

CVG3:22 pmCincinnati Cinci./N. Kentucky

9h 31m

2 stops

ONT9:53 pmOntario

Dec 7

ONT11:59 pmOntario

7h 50m

1 stop

CVG10:49 amCincinnati Cinci./N. Kentucky

$359

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 11/11

12:36 pm-11:51 pm

2 stops14h 15m

Ontario

Sat 11/14

6:30 am-9:19 am

2 stops23h 49m

$254

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 12/5

7:02 pm-10:45 am

1 stop18h 43m

Ontario

Sat 12/12

6:00 am-5:59 pm

1 stop8h 59m

$258

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 12/12

10:26 am-7:44 am

2 stops24h 18m

Ontario

Wed 1/6

3:33 pm-4:03 pm

1 stop21h 30m

$293

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 12/12

7:02 pm-10:45 am

1 stop18h 43m

Ontario

Sat 1/9

7:00 am-8:40 pm

1 stop10h 40m

$300

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 12/12

7:26 am-12:38 pm

1 stop8h 12m

Ontario

Sat 1/9

1:24 pm-10:59 pm

1 stop6h 35m

$329

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 12/3

7:40 am-12:12 pm

1 stop7h 32m

Ontario

Mon 12/7

10:30 pm-10:38 am

1 stop9h 08m

$329

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 2/16

5:50 pm-10:14 pm

1 stop7h 24m

Ontario

Sat 2/20

7:00 am-6:49 pm

1 stop8h 49m

$329

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 1/16

5:50 pm-10:14 pm

1 stop7h 24m

Ontario

Thu 2/18

7:00 am-5:21 pm

1 stop7h 21m

$329

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 12/12

3:17 pm-9:11 pm

1 stop8h 54m

Ontario

Sat 1/9

11:20 am-9:50 pm

1 stop7h 30m

$329

Quickest round-trip

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 1/28

8:45 am-12:40 pm

1 stop6h 55m

Ontario

Thu 2/11

6:00 am-3:43 pm

1 stop6h 43m

$329

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 $452 to $559.
The lowest price recently found on this route was $254.

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 October 2026, prices for Cincinnati to Ontario flights are approximately 136% 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	$128
Fastest flight time	6h 15m
Direct flights	None

The best one-way flight to Ontario from Cincinnati in the past 72 hours is $128. The best round-trip flight deal from Cincinnati to Ontario found on momondo in the last 72 hours is $254.

The fastest flight from Cincinnati to Ontario takes 6h 15m

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 6h 15m.
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 October 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 (34% of total bookings). The next most popular airlines are Frontier (31%), Delta (21%), and United Airlines (14%).

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 $208	Free Cancellation	Rating 5.5 2,521 reviews	Search Frontier flights
Delta	PriceFrom $277	Free Cancellation	Rating 7.8 8,654 reviews	Search Delta flights
American Airlines	PriceFrom $318	Free Cancellation	Rating 7.0 12,178 reviews	Search American Airlines flights
United Airlines	PriceFrom $373	Free Cancellation	Rating 7.3 10,391 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Sat 11/21

Sat 11/28

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Cincinnati

Complete your trip

Feeling lucky

Cheap flights from Cincinnati to Los Angeles from $128

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 12/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Cincinnati to Los Angeles

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Frontier flights from Cincinnati to Ontario

Our best Frontier deals on Cincinnati to Ontario flight tickets

American Airlines flights from Cincinnati to Ontario

Our best American Airlines deals on Cincinnati to Ontario flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Cincinnati to Ontario that are best for you.

See travel insights to Los Angeles from

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.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Cincinnati

According to popular flight searches on momondo this year

Complete your trip to Los Angeles

Explore popular destinations other users love

According to popular flight searches on momondo this year