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$139+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — ONT
juin 17 — juin 241
mar. 6/17
mar. 6/24
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 27 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 juin 12, 2025.

Round-trip from

$272
(Gotogate)

One-way from

$139
(Alaska Airlines)

Popular in

December

Cheapest in

January

Average price

$426
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. 1% potential increase in price ($5 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 June 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 juin 12, 2025.

This Gotogate deal was found by Cheapflights users on 6/12. 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.
lun. 8/259:29 pmCVG - ONT
1 stop21h 49mFrontier
lun. 9/16:00 amONT - CVG
1 stop21h 35mFrontier
Deal found 6/12$272
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/306:31 amCVG - ONT
1 stop8h 46mDelta
ven. 7/411:49 amONT - CVG
1 stop7h 51mDelta
Deal found 6/11$279
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/135:35 amCVG - ONT
2 stops8h 57mAmerican Airlines
mer. 8/1311:59 pmONT - CVG
1 stop7h 18mAmerican Airlines
Deal found 6/11$284
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/136:00 amCVG - ONT
2 stops9h 14mUnited Airlines
mer. 8/136:31 pmONT - CVG
2 stops12h 59mUnited Airlines
Deal found 6/11$289
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/76:37 pmCVG - ONT
1 stop8h 36mAlaska Airlines
jeu. 8/142:21 pmONT - CVG
1 stop13h 46mAlaska Airlines
Deal found 6/12$296
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/28:45 pmCVG - ONT
1 stop5h 55mSouthwest
lun. 10/612:50 pmONT - CVG
1 stop8h 15mSouthwest
Deal found 6/10$297
This Hawaiian Airlines deal was found by Cheapflights users on 6/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/56:37 pmCVG - ONT
1 stop8h 22mHawaiian Airlines
mar. 9/96:00 amONT - CVG
1 stop8h 37mHawaiian Airlines
Deal found 6/10$370
This Trip.com deal was found by Cheapflights users on 6/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 6/2210:25 pmCVG - ONT
1 stop16h 27mMultiple Airlines
jeu. 6/266:00 amONT - CVG
1 stop15h 55mMultiple Airlines
Deal found 6/11$400

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 juin 12, 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

lun. 8/25

9:29 pm-4:18 pm

1 stop21h 49m

Ontario

lun. 9/1

6:00 am-6:35 am

1 stop21h 35m

$272

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

lun. 6/30

6:31 am-12:17 pm

1 stop8h 46m

Ontario

ven. 7/4

11:49 am-10:40 pm

1 stop7h 51m

$279

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

mer. 8/13

5:35 am-11:32 am

2 stops8h 57m

Ontario

mer. 8/13

11:59 pm-10:17 am

1 stop7h 18m

$284

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

mer. 8/13

6:00 am-12:14 pm

2 stops9h 14m

Ontario

mer. 8/13

6:31 pm-10:30 am

2 stops12h 59m

$289

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

jeu. 8/7

6:37 pm-12:13 am

1 stop8h 36m

Ontario

jeu. 8/14

2:21 pm-7:07 am

1 stop13h 46m

$296

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

mer. 7/30

6:30 am-1:00 pm

2 stops9h 30m

Ontario

mer. 8/13

10:55 am-10:25 pm

1 stop8h 30m

$339

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

ven. 9/5

6:37 pm-11:59 pm

1 stop8h 22m

Ontario

mar. 9/9

6:00 am-5:37 pm

1 stop8h 37m

$370

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

dim. 6/22

10:25 pm-11:52 am

1 stop16h 27m

Ontario

jeu. 6/26

6:00 am-12:55 am

1 stop15h 55m

$400

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

mar. 8/5

6:37 pm-12:13 am

1 stop8h 36m

$139

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

mer. 8/27

12:14 pm-7:11 pm

1 stop9h 57m

$140

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 16 results
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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 June 9, 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 juin 12, 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

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.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

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).

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 juin 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Cincinnati to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    According to our current data, Frontier ($272), Delta ($279), and American Airlines ($284) offers the cheapest pricing from Cincinnati to Ontario. You may be able to fly from Cincinnati to Ontario for 28% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Cincinnati to Ontario one-way?

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $139. Delta flights start at $140 while deals on Frontier start at $141 one-way.

  • 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

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Alternative routes for Cincinnati to Ontario

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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 juin 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$265FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$254Average$402FlexibilityNo cancel feeOn-time71%
DeltaCheapest$312Average$447FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$318Average$453FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$377Average$429FlexibilityNo cancel feeOn-time63%

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