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

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

How many flights depart from Cincinnati to Ontario on average per week?

6 flights are operational weekly from Cincinnati to Ontario as of November 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

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

Denver (DEN) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

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.

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

Flights via Denver (DEN) offer the lowest average round-trip price of $435.

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 36% 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.

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 November 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.

$90 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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Cheap round-trip flights

Enter your travel dates to find the best prices.

4:33 pm - 12:05 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

10h 32m1 stop Denver Intl

6:30 am - 3:20 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

29h 50m1 stop Denver Intl

$204Frontier

Wed, Jan 20 - Tue, Feb 2

7:02 pm - 10:17 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

6h 15m1 stop Denver Intl

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

8h 59m1 stop Denver Intl

$225Frontier

Sat, Dec 5 - Sat, Dec 12

8:14 am - 4:05 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

10h 51m1 stop Seattle/Tacoma Intl

11:30 am - 5:59 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

27h 29m1 stop Denver Intl

$291Multiple Airlines

Thu, Dec 3 - Thu, Dec 10

9:36 am - 11:23 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

16h 47m1 stop San Francisco

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

8h 59m1 stop Denver Intl

$297Multiple Airlines

Tue, Dec 8 - Wed, Dec 16

11:40 am - 6:44 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

10h 04m1 stop Dallas/Fort Worth

1:23 pm - 10:56 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 33m1 stop Phoenix Sky Harbor Intl

$385American Airlines

Wed, Dec 9 - Wed, Dec 16

7:28 am - 12:41 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 13m1 stop Phoenix Sky Harbor Intl

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

6h 35m1 stop Phoenix Sky Harbor Intl

$385American Airlines

Tue, Jan 5 - Sat, Jan 9

6:00 am - 11:07 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

8h 07m1 stop Atlanta Hartsfield-Jackson

6:00 am - 3:30 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 30m1 stop Salt Lake City

$385Delta

Thu, Dec 3 - Mon, Dec 7

3:00 pm - 7:55 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

7h 55m1 stop Atlanta Hartsfield-Jackson

1:11 pm - 11:08 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 57m1 stop Salt Lake City

$387Delta

Sat, Dec 5 - Fri, Dec 11

5:15 am - 12:34 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

10h 19m2 stops Chicago O'Hare Intl Denver Intl

6:40 pm - 9:32 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

11h 52m2 stops San Francisco Chicago O'Hare Intl

$467United Airlines

Fri, Dec 11 - Fri, Dec 11

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

8h 54m1 stop Denver Intl

5:45 am - 4:10 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 25m1 stop Houston George Bush Intcntl

$505United Airlines

Mon, Dec 7 - Tue, Dec 8

Cheap last minute flights

Enter your travel dates to find the best prices.

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

10h 19m1 stop Denver Intl

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

8h 59m1 stop Denver Intl

$315Frontier

Fri, Nov 13 - Fri, Dec 11

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

10h 19m1 stop Denver Intl

6:30 am - 3:22 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

5h 52m1 stop Denver Intl

$360Frontier

Wed, Nov 11 - Wed, Nov 18

4:32 pm - 10:42 amCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

21h 10m1 stop Denver Intl

11:30 am - 8:24 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

29h 54m2 stops Denver Intl Atlanta Hartsfield-Jackson

$366Frontier

Fri, Nov 13 - Fri, Dec 11

9:36 am - 7:30 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

12h 54m1 stop San Francisco

12:01 pm - 8:17 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

29h 16m1 stop San Francisco

$528Multiple Airlines

Thu, Nov 12 - Mon, Nov 16

9:36 am - 7:30 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

12h 54m1 stop San Francisco

12:01 pm - 11:43 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

20h 42m2 stops San Francisco Atlanta Hartsfield-Jackson

$549Multiple Airlines

Thu, Nov 12 - Mon, Nov 16

7:30 am - 4:21 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

11h 51m1 stop Las Vegas Harry Reid Intl

6:08 pm - 6:30 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

45h 22m2 stops Dallas/Fort Worth Fort Lauderdale

$685Multiple Airlines

Sun, Nov 15 - Fri, Nov 20

11:10 am - 5:56 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

9h 46m2 stops Chicago O'Hare Intl San Francisco

9:25 am - 7:45 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 20m1 stop San Francisco

$1,031United Airlines

Fri, Nov 13 - 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

$1,042United Airlines

Fri, Nov 13 - Sun, Nov 15

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

8h 29m1 stop San Francisco

7:00 am - 5:25 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

7h 25m1 stop Chicago O'Hare Intl

$1,042United Airlines

Fri, Nov 13 - Mon, Nov 16

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

$1,047Delta

Thu, Nov 12 - Wed, Nov 18

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Frontier flights from Cincinnati to Ontario

Our best Frontier deals on Cincinnati to Ontario flight tickets

Frontier

Jan 20

CVG4:33 pmCincinnati Cinci./N. Kentucky

10h 32m

1 stop

ONT12:05 amOntario

Feb 2

ONT6:30 amOntario

29h 50m

1 stop

CVG3:20 pmCincinnati Cinci./N. Kentucky

$204

Frontier

Dec 5

CVG7:02 pmCincinnati Cinci./N. Kentucky

6h 15m

1 stop

ONT10:17 pmOntario

Dec 12

ONT6:00 amOntario

8h 59m

1 stop

CVG5:59 pmCincinnati Cinci./N. Kentucky

$225

Frontier

Dec 4

CVG7:02 pmCincinnati Cinci./N. Kentucky

8h 15m

1 stop

ONT12:17 amOntario

Dec 10

ONT11:30 amOntario

27h 29m

1 stop

CVG5:59 pmCincinnati Cinci./N. Kentucky

$233

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 1/20

4:33 pm-12:05 am

1 stop10h 32m

Ontario

Tue 2/2

6:30 am-3:20 pm

1 stop29h 50m

$204

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 12/5

7:02 pm-10:17 pm

1 stop6h 15m

Ontario

Sat 12/12

6:00 am-5:59 pm

1 stop8h 59m

$225

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 12/3

8:14 am-4:05 pm

1 stop10h 51m

Ontario

Thu 12/10

11:30 am-5:59 pm

1 stop27h 29m

$291

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 12/8

9:36 am-11:23 pm

1 stop16h 47m

Ontario

Wed 12/16

6:00 am-5:59 pm

1 stop8h 59m

$297

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 12/9

11:40 am-6:44 pm

1 stop10h 04m

Ontario

Wed 12/16

1:23 pm-10:56 pm

1 stop6h 33m

$385

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 1/5

7:28 am-12:41 pm

1 stop8h 13m

Ontario

Sat 1/9

1:24 pm-10:59 pm

1 stop6h 35m

$385

Quickest round-trip

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 12/3

6:00 am-11:07 am

1 stop8h 07m

Ontario

Mon 12/7

6:00 am-3:30 pm

1 stop6h 30m

$385

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 12/5

3:00 pm-7:55 pm

1 stop7h 55m

Ontario

Fri 12/11

1:11 pm-11:08 pm

1 stop6h 57m

$387

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 12/11

5:15 am-12:34 pm

2 stops10h 19m

Ontario

Fri 12/11

6:40 pm-9:32 am

2 stops11h 52m

$467

CincinnatiOntario

CVG Cincinnati Cinci./N. Kentucky - ONT Ontario

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 12/7

3:17 pm-9:11 pm

1 stop8h 54m

Ontario

Tue 12/8

5:45 am-4:10 pm

1 stop7h 25m

$505

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

Other information

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 $354 to $492.
The lowest price recently found on this route was $204.

What is the cheapest month to fly to Ontario?

In general, July 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 $358. If you aren’t able to travel during the month of July, then book flights to Ontario from Cincinnati during February instead. Flights to Ontario in February, while not as cheap as those in July, still average around $385.

How have Cincinnati to Ontario flight prices changed over time?

As of November 2026, prices for Cincinnati to Ontario flights are approximately 15% cheaper 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	$90
Fastest flight time	7h 04m
Direct flights	None

The best one-way flight to Ontario from Cincinnati in the past 72 hours is $90. The best round-trip flight deal from Cincinnati to Ontario found on momondo in the last 72 hours is $204.

The fastest flight from Cincinnati to Ontario takes 7h 04m

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 7h 04m.
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 November 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 (38% of total bookings). The next most popular airlines are Frontier (29%), Delta (20%), 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 $208	Free Cancellation	Rating 5.5 2,506 reviews	Search Frontier flights
Delta	PriceFrom $277	Free Cancellation	Rating 7.8 8,700 reviews	Search Delta flights
American Airlines	PriceFrom $328	Free Cancellation	Rating 7.0 12,225 reviews	Search American Airlines flights
United Airlines	PriceFrom $373	Free Cancellation	Rating 7.3 10,475 reviews	Search United Airlines flights

United Airlines Flights From Cincinnati to Ontario
United Airlines flight deals from Cincinnati to Ontario start from $373 round-trip. Over the 6 United Airlines flights for this route in a normal week, average airfare is usually $411 round-trip - but some users have found much cheaper deals with momondo.

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 $90

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 12/5. 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

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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?

How many flights depart from Cincinnati to Ontario on average per week?

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

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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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