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

Frontier, United Airlines, and Delta 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.

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 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 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.

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.

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 May 2026, there are 5 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.

$154 Cheap Flights from Cincinnati to Ontario in 2026

Q: 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 $565 to $446. The lowest price recently found on this route was $289.

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9:30 pm - 10:04 am

CVG

ONT

15h 34m

2 stops

1:38 pm - 3:52 pm

ONT

CVG

23h 14m

1 stop

$289Multiple Airlines

Mon, Jul 20 - Wed, Jul 29

8:15 pm - 11:49 pm

CVG

ONT

6h 34m

1 stop

6:00 am - 7:10 pm

ONT

CVG

10h 10m

1 stop

$310Frontier

Wed, Jun 24 - Wed, Jul 1

9:30 pm - 8:03 am

CVG

ONT

13h 33m

1 stop

1:38 pm - 3:52 pm

ONT

CVG

23h 14m

1 stop

$313Multiple Airlines

Mon, Jul 20 - Wed, Jul 29

8:15 pm - 11:49 pm

CVG

ONT

6h 34m

1 stop

6:00 am - 7:10 pm

ONT

CVG

10h 10m

1 stop

$319Frontier

Sat, Jun 27 - Wed, Jul 1

8:36 pm - 10:04 am

CVG

ONT

16h 28m

1 stop

3:40 pm - 8:25 pm

ONT

CVG

25h 45m

1 stop

$320Frontier

Tue, Jul 21 - Wed, Jul 29

8:15 pm - 10:05 am

CVG

ONT

16h 50m

1 stop

6:00 am - 7:31 pm

ONT

CVG

10h 31m

1 stop

$322Frontier

Tue, Jun 23 - Thu, Jun 25

8:15 pm - 11:49 pm

CVG

ONT

6h 34m

1 stop

6:00 am - 7:10 pm

ONT

CVG

10h 10m

1 stop

$324Frontier

Sat, Jun 27 - Wed, Jul 1

8:36 pm - 11:50 pm

CVG

ONT

6h 14m

1 stop

8:17 am - 6:22 pm

ONT

CVG

7h 05m

1 stop

$328Frontier

Thu, Jul 16 - Mon, Jul 20

9:28 pm - 11:55 pm

CVG

ONT

29h 27m

1 stop

11:19 am - 8:21 pm

ONT

CVG

6h 02m

1 stop

$329Frontier

Wed, Nov 11 - Sun, Nov 15

8:36 pm - 11:49 pm

CVG

ONT

6h 13m

1 stop

1:38 pm - 8:25 pm

ONT

CVG

27h 47m

1 stop

$334Frontier

Fri, Jul 3 - Wed, Jul 8

Frontier flights from Cincinnati to Ontario

Our best Frontier deals on Cincinnati to Ontario flight tickets

Frontier

Jun 17

CVG8:15 pmCincinnati Cinci./N. Kentucky

16h 50m

1 stop

ONT10:05 amOntario

Jun 24

ONT1:33 pmOntario

27h 14m

1 stop

CVG7:47 pmCincinnati Cinci./N. Kentucky

$310

Frontier

Jun 27

CVG8:15 pmCincinnati Cinci./N. Kentucky

6h 34m

1 stop

ONT11:49 pmOntario

Jul 1

ONT6:00 amOntario

10h 10m

1 stop

CVG7:10 pmCincinnati Cinci./N. Kentucky

$319

Frontier

Jul 21

CVG8:36 pmCincinnati Cinci./N. Kentucky

16h 28m

1 stop

ONT10:04 amOntario

Jul 29

ONT3:40 pmOntario

25h 45m

1 stop

CVG8:25 pmCincinnati Cinci./N. Kentucky

$320

Alaska Airlines flights from Cincinnati to Ontario

Our best Alaska Airlines deals on Cincinnati to Ontario flight tickets

Alaska Airlines

Jun 9

CVG7:08 pmCincinnati Cinci./N. Kentucky

19h 06m

1 stop

ONT11:14 amOntario

Jun 10

ONT5:54 pmOntario

8h 36m

1 stop

CVG5:30 amCincinnati Cinci./N. Kentucky

$607

Alaska Airlines

Jun 9

CVG2:16 pmCincinnati Cinci./N. Kentucky

23h 58m

2 stops

ONT11:14 amOntario

Jun 10

ONT5:54 pmOntario

8h 36m

1 stop

CVG5:30 amCincinnati Cinci./N. Kentucky

$712

Alaska Airlines

Jun 9

CVG1:38 pmCincinnati Cinci./N. Kentucky

13h 18m

2 stops

ONT11:56 pmOntario

Jun 10

ONT7:00 amOntario

23h 35m

2 stops

CVG9:35 amCincinnati Cinci./N. Kentucky

$718

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 7/20

9:30 pm-10:04 am

2 stops15h 34m

Ontario

Wed 7/29

1:38 pm-3:52 pm

1 stop23h 14m

$289

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 6/24

8:15 pm-11:49 pm

1 stop6h 34m

Ontario

Wed 7/1

6:00 am-7:10 pm

1 stop10h 10m

$310

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 7/20

9:30 pm-8:03 am

1 stop13h 33m

Ontario

Wed 7/29

1:38 pm-3:52 pm

1 stop23h 14m

$313

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 6/27

8:15 pm-11:49 pm

1 stop6h 34m

Ontario

Wed 7/1

6:00 am-7:10 pm

1 stop10h 10m

$319

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 7/21

8:36 pm-10:04 am

1 stop16h 28m

Ontario

Wed 7/29

3:40 pm-8:25 pm

1 stop25h 45m

$320

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 6/23

8:15 pm-10:05 am

1 stop16h 50m

Ontario

Thu 6/25

6:00 am-7:31 pm

1 stop10h 31m

$322

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 6/27

8:15 pm-11:49 pm

1 stop6h 34m

Ontario

Wed 7/1

6:00 am-7:10 pm

1 stop10h 10m

$324

Quickest round-trip

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 7/16

8:36 pm-11:50 pm

1 stop6h 14m

Ontario

Mon 7/20

8:17 am-6:22 pm

1 stop7h 05m

$328

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 11/11

9:28 pm-11:55 pm

1 stop29h 27m

Ontario

Sun 11/15

11:19 am-8:21 pm

1 stop6h 02m

$329

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 7/3

8:36 pm-11:49 pm

1 stop6h 13m

Ontario

Wed 7/8

1:38 pm-8:25 pm

1 stop27h 47m

$334

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?

What is the cheapest month to fly to Ontario?

In general, August 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 $317. If you aren’t able to travel during the month of August, then book flights to Ontario from Cincinnati during September instead. Flights to Ontario in September, while not as cheap as those in August, still average around $320.

How have Cincinnati to Ontario flight prices changed over time?

As of May 2026, prices for Cincinnati to Ontario flights are approximately 24% 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

Fastest flight time	6h 13m
Direct flights	None

The fastest flight from Cincinnati to Ontario takes 6h 13m

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 13m.
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 May 2026, there are 5 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 (30% of total bookings). The next most popular airlines are Frontier (27%), Delta (25%), 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 $157	Free Cancellation	Rating 5.6 2,930 reviews	Search Frontier flights
American Airlines	PriceFrom $215	Free Cancellation	Rating 7.1 11,639 reviews	Search American Airlines flights
United Airlines	PriceFrom $316	Free Cancellation	Rating 7.4 9,751 reviews	Search United Airlines flights
Southwest	PriceFrom $318	Free Cancellation	Rating 7.9 4,264 reviews	Search Southwest flights
Delta	PriceFrom $325	Free Cancellation	Rating 7.9 8,423 reviews	Search Delta 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 $154

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 6/30. 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

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

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

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