What’s the fastest layover option from Cincinnati to Ontario?

Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 6h 25m.

What’s the top layover airport for flights from Cincinnati to Ontario?

Las Vegas (LAS) – chosen by Cheapflights users on 67% of 1-stop itineraries from Cincinnati to Ontario on Cheapflights.

Which airport typically offers the quickest layover for flights from Cincinnati to Ontario?

Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 13m.

What’s the cheapest layover airport for flights from Cincinnati to Ontario?

Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $168.

How long is the flight from Cincinnati to Ontario?

There are many flights that can get you from Cincinnati to Ontario in 6h 40m. Fly via Frontier or Delta to get the fastest option. The distance from Cincinnati to Ontario is about 1849 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Cincinnati to Ontario round-trip?

According to our current data, Frontier ($148), American Airlines ($250), and Delta ($312) offers the cheapest pricing from Cincinnati to Ontario. You may be able to fly from Cincinnati to Ontario for 61% less than the average price by searching for these airlines.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

What are the most popular airlines that fly from Cincinnati to Ontario?

American Airlines, Delta and Frontier are the most popular airlines when flying from Cincinnati to Ontario.

What is the cheapest day to fly round-trip from Cincinnati to Ontario?

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 23% when planning your travel around this day of the week.

How far in advance should I book a flight from Cincinnati to Ontario?

To save on the cost of your flight from Cincinnati to Ontario, book at least 58 days before your planned departure. Booking around this time can save you about 74% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $306 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $362.

What is the cheapest month to fly from Cincinnati to Ontario?

The best pricing can be found in the month of July. Prices to Ontario from Cincinnati average $358. You can even find prices in July for less than $358, as users have found deals to Ontario from as low as $118. The month of December appears to be one of the more expensive times to travel to Ontario from Cincinnati. Flying in the targeted month can save you up to 17%.

Can I find deals for flights from Cincinnati to Ontario that include hotel bookings?

Yes. In addition to deals on Cincinnati to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Cincinnati to Ontario?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cincinnati to Ontario.

Can I find deals for business class flights from Cincinnati to Ontario?

Yes. Cheapflights offers flight deals from Cincinnati to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$80+ Flights from Cincinnati to Ontario

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Cincinnati to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Cincinnati Cinci./N. Kentucky to Ontario are usually found in January or March, booked 26 days in advance, depart on a Thursday or Sunday and return on a Wednesday

Cheap flight deals from Cincinnati to Ontario

Round-trip from	$150 (Mytrip)
One-way from	$80 (Kiwi.com)
Popular in	December
Cheapest in	January
Average price	$402

From Cincinnati Cinci./N. Kentucky to Ontario

Search Deals

One-way flight from Cincinnati Cinci./N. Kentucky to Ontario

Search Deals

Highest demand for flights based on searches. 0% potential increase in price ($0 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Cincinnati to Ontario

Cheapest flights from Cincinnati to Ontario
Explore the most affordable flight options available from Cincinnati to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Mon 10/206:05 amCVG - ONT

1 stop6h 30mFrontier

Sat 10/257:04 amONT - CVG

1 stop13h 55mFrontier

Deal found 9/14

$150

Tue 10/286:05 amCVG - ONT

1 stop20h 45mFrontier

Fri 10/316:53 amONT - CVG

1 stop10h 27mFrontier

Deal found 9/14

$151

Sat 10/118:00 amCVG - ONT

1 stop18h 50mFrontier

Tue 10/147:04 amONT - CVG

1 stop13h 55mFrontier

Deal found 9/13

$152

Thu 10/23:21 pmCVG - ONT

1 stop19h 32mFrontier

Mon 10/612:13 pmONT - CVG

1 stop6h 46mFrontier

Deal found 9/15

$153

Mon 9/228:00 amCVG - ONT

1 stop9h 00mFrontier

Sat 9/278:59 pmONT - CVG

1 stop25h 41mFrontier

Deal found 9/12

$157

Thu 10/306:05 amCVG - ONT

1 stop8h 05mFrontier

Sat 11/812:05 pmONT - CVG

1 stop8h 54mFrontier

Deal found 9/13

$160

Mon 9/228:00 amCVG - ONT

1 stop9h 00mFrontier

Mon 10/612:13 pmONT - CVG

1 stop6h 46mFrontier

Deal found 9/13

$162

Thu 10/236:14 pmCVG - ONT

1 stop8h 36mFrontier

Mon 10/276:53 amONT - CVG

1 stop15h 46mFrontier

Deal found 9/14

$169

Tue 10/218:00 amCVG - ONT

1 stop18h 50mFrontier

Tue 10/286:53 amONT - CVG

1 stop15h 46mFrontier

Deal found 9/14

$170

Tue 10/148:00 amCVG - ONT

1 stop18h 50mFrontier

Mon 10/206:53 amONT - CVG

1 stop15h 46mFrontier

Deal found 9/15

$171

Mon 9/298:00 amCVG - ONT

1 stop15h 56mFrontier

Fri 10/38:59 pmONT - CVG

1 stop22h 42mFrontier

Deal found 9/14

$173

Mon 9/298:00 amCVG - ONT

1 stop9h 00mFrontier

Mon 10/612:13 pmONT - CVG

1 stop6h 46mFrontier

Deal found 9/14

$174

Best flights from Cincinnati to Ontario
Discover carefully curated flight deals from Cincinnati to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2025.

Tue 11/116:05 amCVG - ONT

1 stop20h 45mFrontier

Mon 11/176:53 amONT - CVG

1 stop15h 46mFrontier

Deal found 9/15

$173

Wed 10/227:59 pmCVG - ONT

1 stop6h 40mDelta

Wed 10/297:35 amONT - CVG

2 stops12h 24mDelta

Deal found 9/13

$342

Mon 9/228:00 amCVG - ONT

1 stop9h 00mFrontier

Fri 9/2612:13 pmONT - CVG

1 stop6h 49mFrontier

Deal found 9/15

$177

Thu 10/166:49 pmCVG - ONT

1 stop8h 14mAlaska Airlines

Wed 10/226:00 amONT - CVG

1 stop8h 49mAlaska Airlines

Deal found 9/13

$378

Fri 10/171:08 pmCVG - ONT

1 stop13h 42mFrontier

Mon 10/206:53 amONT - CVG

2 stops28h 03mFrontier

Deal found 9/14

$244

Tue 11/117:59 pmCVG - ONT

1 stop6h 53mDelta

Mon 11/1710:25 pmONT - CVG

1 stop7h 29mDelta

Deal found 9/14

$348

Fri 9/261:21 pmCVG - ONT

2 stops13h 17mFrontier

Sun 9/287:15 pmONT - CVG

2 stops19h 23mFrontier

Deal found 9/14

$299

Sat 10/186:00 amCVG - ONT

1 stop7h 26mDelta

Wed 10/296:00 amONT - CVG

1 stop5h 58mDelta

Deal found 9/13

$348

Wed 10/86:04 pmCVG - ONT

1 stop7h 18mDelta

Fri 10/1710:00 pmONT - CVG

1 stop8h 52mDelta

Deal found 9/13

$358

Tue 10/2811:26 amCVG - ONT

2 stops12h 54mDelta

Fri 10/317:35 amONT - CVG

2 stops12h 25mDelta

Deal found 9/14

$367

Wed 10/84:53 pmCVG - ONT

1 stop8h 29mDelta

Tue 10/1411:36 amONT - CVG

1 stop9h 23mDelta

Deal found 9/13

$378

Last-minute flights from Cincinnati to Ontario
Discover last-minute flight deals from Cincinnati to Ontario. Data last updated September 15, 2025 and is based on user searches.

Sun 9/2112:02 pmCVG - ONT

1 stop9h 33mFrontier

Mon 9/294:08 pmONT - CVG

1 stop6h 32mFrontier

Deal found 9/13

$162

Thu 10/23:21 pmCVG - ONT

1 stop19h 32mFrontier

Mon 10/612:13 pmONT - CVG

1 stop6h 46mFrontier

Deal found 9/15

$153

Tue 10/78:00 amCVG - ONT

1 stop18h 50mFrontier

Wed 10/86:53 amONT - CVG

1 stop14h 06mFrontier

Deal found 9/15

$151

Sat 10/118:00 amCVG - ONT

1 stop18h 50mFrontier

Thu 10/166:05 amONT - CVG

1 stop21h 49mFrontier

Deal found 9/15

$157

Tue 10/148:00 amCVG - ONT

1 stop18h 50mFrontier

Mon 10/206:53 amONT - CVG

1 stop15h 46mFrontier

Deal found 9/15

$171

Sun 10/199:10 pmCVG - ONT

1 stop13h 37mFrontier

Fri 10/248:34 amONT - CVG

1 stop12h 25mFrontier

Deal found 9/15

$159

Mon 10/206:05 amCVG - ONT

1 stop6h 30mFrontier

Sat 10/257:04 amONT - CVG

1 stop13h 55mFrontier

Deal found 9/14

$150

Mon 10/206:05 amCVG - ONT

1 stop6h 30mFrontier

Tue 10/286:53 amONT - CVG

1 stop15h 46mFrontier

Deal found 9/14

$169

Tue 10/218:00 amCVG - ONT

1 stop18h 50mFrontier

Tue 10/286:53 amONT - CVG

1 stop15h 46mFrontier

Deal found 9/14

$170

Fri 10/249:10 pmCVG - ONT

1 stop26h 32mFrontier

Tue 10/286:53 amONT - CVG

1 stop15h 46mFrontier

Deal found 9/15

$156

Fri 10/245:59 pmCVG - ONT

1 stop16h 50mFrontier

Mon 10/276:53 amONT - CVG

1 stop15h 46mFrontier

Deal found 9/15

$172

Thu 10/306:05 amCVG - ONT

1 stop8h 05mFrontier

Thu 11/612:05 pmONT - CVG

1 stop10h 34mFrontier

Deal found 9/13

$160

One-way flights from Cincinnati to Ontario
Search for one-way flight options from Cincinnati to Ontario. Find affordable one-way fares based on user searches. Data last updated September 15, 2025.

Mon 10/68:00 amCVG - ONT

1 stop9h 00mFrontier

Deal found 9/14

$80

Mon 9/228:00 amCVG - ONT

1 stop9h 00mFrontier

Deal found 9/13

$81

Thu 10/24:48 pmCVG - ONT

1 stop7h 08mFrontier

Deal found 9/15

$82

Tue 11/116:05 amCVG - ONT

1 stop20h 45mFrontier

Deal found 9/14

$86

Mon 10/131:48 pmCVG - ONT

1 stop13h 02mFrontier

Deal found 9/15

$87

Tue 10/78:00 amCVG - ONT

1 stop18h 50mFrontier

Deal found 9/14

$88

Thu 9/254:48 pmCVG - ONT

1 stop7h 08mFrontier

Deal found 9/14

$95

Mon 9/298:00 amCVG - ONT

1 stop9h 00mFrontier

Deal found 9/14

$96

Fri 10/171:22 pmCVG - ONT

1 stop11h 30mMultiple Airlines

Deal found 9/14

$101

Tue 9/308:00 amCVG - ONT

1 stop14h 54mFrontier

Deal found 9/15

$102

Tue 9/238:00 amCVG - ONT

1 stop14h 54mFrontier

Deal found 9/15

$103

Sun 12/71:25 pmCVG - ONT

1 stop24h 32mFrontier

Deal found 9/14

$115

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 11/11

6:05 am-11:50 pm

1 stop20h 45m

Ontario

Mon 11/17

6:53 am-1:39 am

1 stop15h 46m

$173

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 9/22

8:00 am-2:00 pm

1 stop9h 00m

Ontario

Fri 9/26

12:13 pm-10:02 pm

1 stop6h 49m

$177

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 10/17

1:08 pm-11:50 pm

1 stop13h 42m

Ontario

Mon 10/20

6:53 am-1:56 pm

2 stops28h 03m

$244

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 9/26

1:21 pm-11:38 pm

2 stops13h 17m

Ontario

Sun 9/28

7:15 pm-5:38 pm

2 stops19h 23m

$299

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 10/22

7:59 pm-11:39 pm

1 stop6h 40m

Ontario

Wed 10/29

7:35 am-10:59 pm

2 stops12h 24m

$342

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 11/11

7:59 pm-11:52 pm

1 stop6h 53m

Ontario

Mon 11/17

10:25 pm-8:54 am

1 stop7h 29m

$348

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 10/18

6:00 am-10:26 am

1 stop7h 26m

Ontario

Wed 10/29

6:00 am-2:58 pm

1 stop5h 58m

$348

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Wed 10/8

6:04 pm-10:22 pm

1 stop7h 18m

Ontario

Fri 10/17

10:00 pm-9:52 am

1 stop8h 52m

$358

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 10/28

11:26 am-9:20 pm

2 stops12h 54m

Ontario

Fri 10/31

7:35 am-11:00 pm

2 stops12h 25m

$367

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 10/16

6:49 pm-12:03 am

1 stop8h 14m

Ontario

Wed 10/22

6:00 am-5:49 pm

1 stop8h 49m

$378

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 22 results

Best time to book a flight from Cincinnati to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Cincinnati with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Cincinnati to Ontario

Prices

How far ahead should I book a flight from Cincinnati to Ontario?

The best time to book flights from Cincinnati to Ontario is 26 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Cincinnati to Ontario?

Currently, August is the cheapest month in which you can book a flight from Cincinnati to Ontario (average of $246). Flying from Cincinnati to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CVG to ONT?

A simple way to save on the total cost of your ticket is to fly from Cincinnati to Ontario at noon. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Cincinnati to Ontario?

Travelers seeking maximum savings on their Cincinnati to Ontario flight should consider departing on Saturday at noon when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from Cincinnati to Ontario, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Southwest

8.0

Very good

4,242 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Delta

8.0

Very good

7,954 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

United Airlines

7.4

Good

8,929 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Frontier

5.8

Fair

3,172 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

How long is the flight from Cincinnati to Ontario?
There are many flights that can get you from Cincinnati to Ontario in 6h 40m. Fly via Frontier or Delta to get the fastest option. The distance from Cincinnati to Ontario is about 1849 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Cincinnati to Ontario round-trip?
According to our current data, Frontier ($148), American Airlines ($250), and Delta ($312) offers the cheapest pricing from Cincinnati to Ontario. You may be able to fly from Cincinnati to Ontario for 61% less than the average price by searching for these airlines.
Can I find deals for flights from Cincinnati to Ontario that include hotel bookings?
Yes. In addition to deals on Cincinnati to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Cincinnati to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cincinnati to Ontario.
Can I find deals for business class flights from Cincinnati to Ontario?
Yes. Cheapflights offers flight deals from Cincinnati to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Cincinnati to Ontario?
Currently, August is the cheapest month in which you can book a flight from Cincinnati to Ontario (average of $246). Flying from Cincinnati to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Cincinnati to Ontario

Detroit to Las Vegas flights

Cleveland to Las Vegas flights

Detroit to Los Angeles flights

Cincinnati to Las Vegas flights

Columbus to Las Vegas flights

Pittsburgh to Las Vegas flights

Cleveland to Los Angeles flights

Detroit to San Francisco flights

Detroit to San Diego flights

Cincinnati to Los Angeles flights

Akron to Las Vegas flights

Detroit to Santa Ana flights

Cleveland to San Francisco flights

Pittsburgh to San Francisco flights

Columbus to San Francisco flights

Detroit to Ontario flights

Detroit to Burbank flights

Columbus to Los Angeles flights

Pittsburgh to Los Angeles flights

Cleveland to San Diego flights

Cleveland to Ontario flights

Dayton to Las Vegas flights

Cincinnati to San Diego flights

Pittsburgh to San Diego flights

Columbus to San Diego flights

Detroit to Sacramento flights

Cincinnati to San Francisco flights

Columbus to Ontario flights

Cincinnati to Santa Ana flights

Detroit to San Jose flights

Pittsburgh to Ontario flights

Detroit to Palm Springs flights

Pittsburgh to Santa Ana flights

Cincinnati to Sacramento flights

Columbus to Santa Ana flights

Columbus to Burbank flights

Akron to Los Angeles flights

Cleveland to Santa Ana flights

Pittsburgh to Palm Springs flights

Columbus to Palm Springs flights

Cincinnati to Reno flights

Pittsburgh to Burbank flights

Detroit to Medford flights

Pittsburgh to Sacramento flights

Detroit to Long Beach flights

Cleveland to Reno flights

Cincinnati to Burbank flights

Dayton to Los Angeles flights

Cleveland to San Jose flights

Complete your trip

Ontario car rentals

Los Angeles Airport car rentals

Ontario Airport car rentals

Burbank Bob Hope Airport car rentals

Long Beach Municipal Airport car rentals

Los Angeles car rentals

San Francisco car rentals

San Diego car rentals

San Jose car rentals

Fresno car rentals

Sacramento car rentals

Burbank car rentals

Other flights to Ontario

Top 5 airlines flying from Cincinnati to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$148	Average$257	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$250	Average$384	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$312	Average$465	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$316	Average$450	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$374	Average$426	FlexibilityNo cancel fee	On-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$80+ Cheap flights from Cincinnati to Ontario (CVG - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Cincinnati to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Cincinnati Cinci./N. Kentucky to Ontario are usually found in January or March, booked 26 days in advance, depart on a Thursday or Sunday and return on a Wednesday

Cheap flight deals from Cincinnati to Ontario

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Cincinnati to Ontario

Cheapest flights from Cincinnati to OntarioExplore the most affordable flight options available from Cincinnati to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Explore the most affordable flight options available from Cincinnati to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Cincinnati to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Cincinnati with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Cincinnati to Ontario

How far ahead should I book a flight from Cincinnati to Ontario?

What is the cheapest month to book a flight from Cincinnati to Ontario?

What is the cheapest time of day to fly from CVG to ONT?

What is the cheapest day to fly from Cincinnati to Ontario?

What’s the top layover airport for flights from Cincinnati to Ontario?

What’s the fastest layover option from Cincinnati to Ontario?

What’s the fastest layover option from Cincinnati to Ontario?

Which airport typically offers the quickest layover for flights from Cincinnati to Ontario?

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from Cincinnati to Ontario, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Cincinnati to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Cincinnati to Ontario?

What are the cheapest airlines flying from Cincinnati to Ontario round-trip?

Can I find deals for flights from Cincinnati to Ontario that include hotel bookings?

How can I find direct flights from Cincinnati to Ontario?

Can I find deals for business class flights from Cincinnati to Ontario?

What is the cheapest month to book a flight from Cincinnati to Ontario?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Cincinnati to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Cincinnati to Ontario

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Cincinnati to Ontario
Explore the most affordable flight options available from Cincinnati to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.