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Kentucky

$54+ Cheap flights from Ontario (ONT) to Kentucky

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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SDF
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Ontario to Kentucky

Keep the following information in mind while searching for Ontario to Kentucky flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$138
(Mytrip)

One-way from

$54
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$413
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From Ontario to Kentucky
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One-way flight from Ontario to Kentucky
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Highest demand for flights based on searches. 25% potential increase in price ($126 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Ontario to Kentucky

Cheapest flights from Ontario to Kentucky
Explore the most affordable flight options available from Ontario to Kentucky. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Mytrip deal was found by Cheapflights users on 2/20. 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.
Thu 5/110:15 pmONT - CVG
1 stop27h 45mFrontier
Mon 5/57:51 pmCVG - ONT
1 stop17h 03mFrontier
Deal found 2/20$138
This Frontier deal was found by Cheapflights users on 2/19. 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.
Wed 3/512:59 amONT - TYS
1 stop11h 24mFrontier
Sun 3/94:43 pmTYS - ONT
1 stop10h 26mFrontier
Deal found 2/19$170
This Delta deal was found by Cheapflights users on 2/20. 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.
Tue 4/15:40 amONT - CVG
1 stop10h 01mDelta
Wed 4/26:24 amCVG - ONT
1 stop18h 58mDelta
Deal found 2/20$263
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Thu 4/1712:59 amONT - BNA
1 stop10h 10mFrontier
Mon 4/216:00 pmBNA - ONT
1 stop7h 59mFrontier
Deal found 2/20$288
This Delta deal was found by Cheapflights users on 2/19. 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.
Mon 3/311:30 pmONT - BNA
1 stop6h 00mDelta
Tue 4/86:55 pmBNA - ONT
1 stop6h 57mDelta
Deal found 2/19$289
This Delta deal was found by Cheapflights users on 2/19. 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.
Sat 4/512:42 pmONT - TYS
1 stop8h 00mDelta
Wed 4/95:00 pmTYS - ONT
1 stop8h 36mDelta
Deal found 2/19$289
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 7/36:43 pmONT - BNA
1 stop8h 39mUnited Airlines
Wed 7/97:05 amBNA - ONT
1 stop7h 27mUnited Airlines
Deal found 2/19$290
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 3/316:00 amONT - BNA
1 stop15h 59mAlaska Airlines
Fri 4/44:15 pmBNA - ONT
1 stop9h 44mAlaska Airlines
Deal found 2/20$295
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Wed 3/126:10 amONT - BNA
2 stops6h 41mAmerican Airlines
Sat 3/153:42 pmBNA - ONT
1 stop8h 45mAmerican Airlines
Deal found 2/19$296
This American Airlines deal was found by Cheapflights users on 2/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/56:00 amONT - TYS
2 stops10h 08mAmerican Airlines
Wed 4/95:24 amTYS - ONT
2 stops9h 31mAmerican Airlines
Deal found 2/18$299
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 3/259:32 amONT - CVG
2 stops9h 22mAmerican Airlines
Sat 3/296:20 pmCVG - ONT
1 stop6h 40mAmerican Airlines
Deal found 2/20$308
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 3/256:45 pmONT - CVG
2 stops11h 52mUnited Airlines
Sat 3/292:10 pmCVG - ONT
2 stops9h 47mUnited Airlines
Deal found 2/20$314

Find flights from Ontario to Kentucky within your budget

Customize your flight search to find flights from Ontario to Kentucky 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 February 20, 2025.

Fly from

Ontario

Fly to

Kentucky

Route

Depart

Return

Price

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Thu 5/1

10:15 pm-5:00 am

1 stop27h 45m

Cincinnati Cinci./N. Kentucky

Mon 5/5

7:51 pm-9:54 am

1 stop17h 03m

$138

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Wed 3/5

12:59 am-3:23 pm

1 stop11h 24m

Knoxville McGhee Tyson

Sun 3/9

4:43 pm-12:09 am

1 stop10h 26m

$170

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Tue 4/1

5:40 am-6:41 pm

1 stop10h 01m

Cincinnati Cinci./N. Kentucky

Wed 4/2

6:24 am-10:22 pm

1 stop18h 58m

$263

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Sat 8/2

10:59 pm-8:18 am

1 stop7h 19m

Nashville Intl

Wed 8/13

7:16 pm-11:43 pm

1 stop6h 27m

$289

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Sat 4/5

12:42 pm-11:42 pm

1 stop8h 00m

Knoxville McGhee Tyson

Wed 4/9

5:00 pm-10:36 pm

1 stop8h 36m

$289

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Thu 7/3

6:43 pm-5:22 am

1 stop8h 39m

Nashville Intl

Wed 7/9

7:05 am-12:32 pm

1 stop7h 27m

$290

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Tue 4/8

12:50 pm-10:52 pm

2 stops8h 02m

Nashville Intl

Fri 4/11

5:01 am-9:54 am

1 stop6h 53m

$294

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Mon 3/31

6:00 am-11:59 pm

1 stop15h 59m

Nashville Intl

Fri 4/4

4:15 pm-11:59 pm

1 stop9h 44m

$295

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Sat 4/5

6:00 am-7:08 pm

2 stops10h 08m

Knoxville McGhee Tyson

Wed 4/9

5:24 am-11:55 am

2 stops9h 31m

$299

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Sun 4/6

12:59 am-1:09 pm

1 stop10h 10m

Nashville Intl

Thu 4/10

12:58 pm-11:59 pm

1 stop13h 01m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Kentucky

Have a flexible travel schedule? Discover the best time to fly to Kentucky from Ontario 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.

Travel insights for flights from Ontario to Kentucky

Get recent, data-driven insights about flights from Ontario to Kentucky including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Kentucky (average of $299). Flying from Ontario to Kentucky in April is currently the most expensive (average of $369). 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 ONT to KY?

Find hourly flight availability from Ontario to Kentucky. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Kentucky as you normally would.

Rainfall in Kentucky by month

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

In terms of precipitation, rainfall in Kentucky ranges from 3.1 - 5.3 inches per month. May is typically the wettest month, when rainfall can reach 5.3 in. September is typically the driest time to visit Kentucky when rainfall is around 3.1 in.

Temperature in Kentucky by month

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

If weather is an important factor for your trip to Kentucky, use this chart to help with planning. For those seeking warmer temperatures, July 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 January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Kentucky

Get insights into the airlines that provide service to Kentucky. 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 Kentucky. Reviews last updated February 20, 2025.
To help decide which airline to fly from Ontario to Kentucky, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Crew

8.7

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Crew

8.7

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Crew

8.7

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Crew

8.7

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Crew

8.7

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Crew

8.7

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

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

  • What airport do you fly from for flights from Ontario to Kentucky?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Kentucky. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $54. Alaska Airlines flights start at $104 while deals on Delta start at $132 one-way.

  • What are the most popular routes from Ontario to Kentucky?

    The most popular flight routes from Ontario to Kentucky are Ontario - Nashville Intl, Ontario - Cincinnati Cinci./N. Kentucky and Ontario - Louisville Intl.

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

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

  • How can I find direct flights from Ontario to Kentucky?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Kentucky 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 Ontario to Kentucky?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Kentucky (average of $299). Flying from Ontario to Kentucky in April is currently the most expensive (average of $369). 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 Ontario to Kentucky

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Ontario to Kentucky

Discover the top 4 airlines that operate flights from Ontario to Kentucky. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$248Average$496FlexibilityNo cancel feeOn-time71%
DeltaCheapest$277Average$447FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$354Average$491FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$367Average$486FlexibilityNo cancel feeOn-time63%
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