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Kentucky

$96+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SDF
abr. 22 — abr. 291
mar. 4/22
mar. 4/29
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 abril 17, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$198
(Frontier)

One-way from

$96
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$443
Provider with most accurate pricing for Los Angeles-Louisville Intl flight deals.
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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. 24% potential increase in price ($118 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in April 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 abril 17, 2025.

This Frontier deal was found by Cheapflights users on 4/16. 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.
mié. 4/1612:59 amONT - CVG
1 stop18h 19mFrontier
sáb. 4/265:39 pmCVG - ONT
1 stop9h 20mFrontier
Deal found 4/16$189
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/296:58 pmONT - BNA
1 stop8h 42mAlaska Airlines
mié. 7/309:00 amBNA - ONT
1 stop11h 04mAlaska Airlines
Deal found 4/17$267
This Gotogate deal was found by Cheapflights users on 4/16. 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.
mié. 5/2112:08 amONT - TYS
1 stop13h 27mFrontier
jue. 5/295:30 pmTYS - ONT
1 stop9h 21mFrontier
Deal found 4/16$268
This CheapOair deal was found by Cheapflights users on 4/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/1812:16 pmONT - BNA
1 stop28h 36mFrontier
vie. 5/237:18 pmBNA - ONT
1 stop6h 33mFrontier
Deal found 4/17$271
This Kissandfly.com deal was found by Cheapflights users on 4/17. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/312:59 amONT - BNA
1 stop15h 53mMultiple Airlines
mié. 5/74:26 pmBNA - ONT
1 stop9h 32mMultiple Airlines
Deal found 4/17$286
This Hawaiian Airlines deal was found by Cheapflights users on 4/16. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/257:17 pmONT - BNA
1 stop8h 23mHawaiian Airlines
lun. 9/295:27 pmBNA - ONT
1 stop8h 32mHawaiian Airlines
Deal found 4/16$288
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/2512:18 pmONT - BNA
1 stop6h 27mDelta
vie. 5/307:12 pmBNA - ONT
1 stop6h 30mDelta
Deal found 4/16$289
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/1012:18 pmONT - TYS
1 stop8h 33mDelta
mar. 5/135:45 amTYS - ONT
1 stop8h 23mDelta
Deal found 4/16$289
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/610:00 pmONT - LEX
1 stop8h 24mDelta
mar. 6/105:58 pmLEX - ONT
1 stop7h 27mDelta
Deal found 4/16$289
This American Airlines deal was found by Cheapflights users on 4/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/1010:00 amONT - TYS
2 stops10h 58mAmerican Airlines
mar. 5/132:56 pmTYS - ONT
2 stops10h 01mAmerican Airlines
Deal found 4/16$299
This American Airlines deal was found by Cheapflights users on 4/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/191:30 pmONT - LEX
2 stops7h 20mAmerican Airlines
sáb. 8/236:04 amLEX - ONT
2 stops8h 23mAmerican Airlines
Deal found 4/17$299
This United Airlines deal was found by Cheapflights users on 4/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/211:45 pmONT - BNA
1 stop7h 15mUnited Airlines
sáb. 5/244:57 pmBNA - ONT
1 stop7h 29mUnited Airlines
Deal found 4/16$308

Cheapflights Fare Finder

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 abril 17, 2025.
Use the filters below to find and compare flights from Ontario to Kentucky that are best for you.

Fly from

Ontario

Fly to

Kentucky

Route

Depart

Return

Price

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

jue. 5/1

6:35 pm-5:00 am

1 stop7h 25m

Cincinnati Cinci./N. Kentucky

lun. 5/5

6:30 am-1:38 pm

1 stop10h 08m

$198

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

mié. 5/21

12:08 am-4:35 pm

1 stop13h 27m

Knoxville McGhee Tyson

dom. 5/25

5:30 pm-11:51 pm

1 stop9h 21m

$241

OntarioNashville

ONT - BNA

ONTBNA

Ontario

dom. 5/18

12:16 pm-6:52 pm

1 stop28h 36m

Nashville Intl

vie. 5/23

7:18 pm-11:51 pm

1 stop6h 33m

$271

OntarioNashville

ONT - BNA

ONTBNA

Ontario

mar. 7/15

6:58 pm-5:40 am

1 stop8h 42m

Nashville Intl

sáb. 7/26

4:19 pm-11:59 pm

1 stop9h 40m

$272

OntarioNashville

ONT - BNA

ONTBNA

Ontario

sáb. 5/3

12:59 am-6:52 pm

1 stop15h 53m

Nashville Intl

mié. 5/7

4:26 pm-11:58 pm

1 stop9h 32m

$286

OntarioNashville

ONT - BNA

ONTBNA

Ontario

mié. 7/16

6:58 pm-5:40 am

1 stop8h 42m

Nashville Intl

mié. 7/23

4:19 pm-11:59 pm

1 stop9h 40m

$288

OntarioNashville

ONT - BNA

ONTBNA

Ontario

dom. 5/25

6:00 am-1:54 pm

1 stop5h 54m

Nashville Intl

jue. 5/29

7:12 pm-11:42 pm

1 stop6h 30m

$289

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

lun. 6/2

10:00 pm-9:40 am

1 stop8h 40m

Knoxville McGhee Tyson

mar. 6/10

4:11 pm-10:25 pm

1 stop9h 14m

$289

OntarioLexington

ONT - LEX

ONTLEX

Ontario

mié. 7/9

12:00 pm-11:56 pm

1 stop8h 56m

Lexington Blue Grass

mar. 7/15

6:29 pm-10:29 pm

1 stop7h 00m

$289

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

sáb. 5/10

10:00 am-11:58 pm

2 stops10h 58m

Knoxville McGhee Tyson

mar. 5/13

2:56 pm-9:57 pm

2 stops10h 01m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 59 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.

Cheapflights Insights

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

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 abril 17, 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 abril 17, 2025.
To help decide which airline to fly from Ontario to Kentucky, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,382 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 $96. Alaska Airlines flights start at $128 while deals on Hawaiian Airlines start at $144 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 abril 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$248Average$484FlexibilityNo cancel feeOn-time71%
DeltaCheapest$286Average$393FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$354Average$505FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$367Average$476FlexibilityNo cancel feeOn-time63%

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