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$75+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — ONT
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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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

Discover tips and strategies to find the most affordable flight options for your journey from Cincinnati (CVG) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 18, 2025.

Round-trip from

$150
(Mytrip)

One-way from

$75
(Mytrip)

Popular in

December

Cheapest in

January

Average price

$349
From Cincinnati Cinci./N. Kentucky to Ontario
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One-way flight from Cincinnati Cinci./N. Kentucky to Ontario
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Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 18, 2025.

This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/53:20 pmCVG - ONT
1 stop7h 34mFrontier
Tue 9/98:59 pmONT - CVG
1 stop22h 42mFrontier
Deal found 8/18$150
This Booking.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/98:00 amCVG - ONT
1 stop14h 54mFrontier
Sat 9/138:59 pmONT - CVG
1 stop25h 41mFrontier
Deal found 8/16$151
This Gotogate deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2812:02 pmCVG - ONT
1 stop9h 33mFrontier
Wed 10/18:59 pmONT - CVG
1 stop25h 41mFrontier
Deal found 8/16$152
This Booking.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1812:02 pmCVG - ONT
1 stop9h 33mFrontier
Sun 9/283:43 pmONT - CVG
1 stop6h 57mFrontier
Deal found 8/16$153
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:00 amCVG - ONT
1 stop15h 56mFrontier
Thu 9/118:59 pmONT - CVG
1 stop22h 13mFrontier
Deal found 8/18$158
This Booking.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/298:00 amCVG - ONT
1 stop15h 56mFrontier
Fri 10/34:08 pmONT - CVG
1 stop6h 32mFrontier
Deal found 8/17$159
This Frontier deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/113:20 pmCVG - ONT
1 stop7h 34mFrontier
Thu 9/1812:18 pmONT - CVG
1 stop8h 41mFrontier
Deal found 8/15$161
This Frontier deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1612:01 pmCVG - ONT
1 stop8h 53mFrontier
Mon 10/2711:53 amONT - CVG
1 stop10h 46mFrontier
Deal found 8/16$162
This Frontier deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1412:02 pmCVG - ONT
1 stop9h 33mFrontier
Fri 9/1912:13 pmONT - CVG
1 stop6h 49mFrontier
Deal found 8/15$163
This Frontier deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:00 amCVG - ONT
1 stop8h 43mFrontier
Thu 9/183:43 pmONT - CVG
1 stop6h 57mFrontier
Deal found 8/15$168
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1912:01 pmCVG - ONT
1 stop8h 48mFrontier
Sat 10/257:04 amONT - CVG
1 stop13h 55mFrontier
Deal found 8/16$169
This FlightHub deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/212:02 pmCVG - ONT
1 stop9h 33mFrontier
Sun 10/57:15 pmONT - CVG
1 stop23h 44mFrontier
Deal found 8/17$170

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cincinnati to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Cincinnati to Ontario that are best for you.

Fly from

Cincinnati

Fly to

Ontario

Route

Depart

Return

Price

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 9/5

3:20 pm-7:54 pm

1 stop7h 34m

Ontario

Tue 9/9

8:59 pm-10:41 pm

1 stop22h 42m

$150

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 9/15

1:14 pm-7:54 pm

1 stop9h 40m

Ontario

Fri 9/19

8:59 pm-10:41 pm

1 stop22h 42m

$150

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 10/14

8:00 am-11:50 pm

1 stop18h 50m

Ontario

Wed 10/22

6:53 am-11:59 pm

1 stop14h 06m

$150

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 9/9

8:00 am-7:54 pm

1 stop14h 54m

Ontario

Thu 9/11

8:59 pm-10:12 pm

1 stop22h 13m

$150

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 9/9

8:00 am-7:54 pm

1 stop14h 54m

Ontario

Wed 9/17

8:59 pm-1:40 am

1 stop25h 41m

$151

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Sat 9/6

8:00 am-7:54 pm

1 stop14h 54m

Ontario

Wed 9/10

8:59 pm-1:40 am

1 stop25h 41m

$151

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Mon 9/8

6:18 am-7:54 pm

1 stop16h 36m

Ontario

Thu 9/18

8:59 pm-10:13 pm

1 stop22h 14m

$151

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Sun 9/7

3:20 pm-7:59 pm

1 stop7h 39m

Ontario

Mon 9/8

8:59 pm-10:41 pm

1 stop22h 42m

$151

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Fri 9/5

6:18 am-7:54 pm

1 stop16h 36m

Ontario

Mon 9/8

8:59 pm-10:41 pm

1 stop22h 42m

$151

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 9/9

8:00 am-7:54 pm

1 stop14h 54m

Ontario

Sat 9/13

8:59 pm-1:40 am

1 stop25h 41m

$151

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 19 results
1
2

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

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

Use this chart to determine the optimal time to book a round-trip flight from Cincinnati to Ontario. Price data was last updated on August 8, 2025.

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?

Find hourly flight availability from Cincinnati to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

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?

Use this chart to determine the cheapest time to fly round-trip from Cincinnati to Ontario. Price data was last updated on December 16, 2024.

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.

How much does it cost to fly round-trip from Cincinnati to Ontario?

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

Share of 1-stop round-trip flights from Cincinnati to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.

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

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

Average round-trip fare for 1-stop flights from Cincinnati to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.

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

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

Shortest average travel time for 1-stop one-way flights from Cincinnati to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

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

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

Average layover duration for 1-stop one-way flights from Cincinnati to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

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

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated August 18, 2025.
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
4,246 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Overall

8.0

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
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Overall

8.0

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.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Overall

8.0

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.
United Airlines
7.4
Good
8,925 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Overall

8.0

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.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Overall

8.0

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.
Frontier
5.8
Fair
3,212 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Overall

8.0

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.

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?

    There are many flights that can get you from Cincinnati to Ontario in 7h 34m. Fly via Frontier to get the fastest option. The distance from Cincinnati to Ontario is about 1849 mi.

  • 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.

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Top 5 airlines flying from Cincinnati to Ontario

Discover the top 5 airlines that operate flights from Cincinnati to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$257FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$250Average$378FlexibilityNo cancel feeOn-time71%
DeltaCheapest$312Average$449FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$318Average$450FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$374Average$429FlexibilityNo cancel feeOn-time63%

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