How many flights depart from Ontario to Kentucky on average per week?

8 flights are operational weekly from Ontario to Kentucky as of May 2026. The most popular departure day for this route is Mon, with 25% of flights per week taking off on this day.

What is the cheapest airline that flies from Ontario to Kentucky?

Frontier, Delta, and United Airlines are the most popular carriers operating from Ontario to Kentucky

What airlines fly to Kentucky?

American Airlines, Spirit Airlines and Delta are the top three most popular airlines that fly to Kentucky from Ontario according to our data. American Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Kentucky. Keep in mind that there are 6 different airlines that fly to Kentucky on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Kentucky?

Prices for flights from Ontario Airport to Kentucky were last updated today.

How many operators does momondo search for flights from Ontario Airport to Kentucky?

As of May 2026, there are 7 operators available to choose from for flights from Ontario Airport to Kentucky.

How old do you have to be to fly from Ontario Airport to Kentucky?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Kentucky.

What documentation or ID do you need to fly to Kentucky?

The travel and health documents required for your trip to Kentucky can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kentucky. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$76 Cheap Flights from Ontario to Kentucky in 2026

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Find the cheapest flights from Ontario to Kentucky

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:50 am - 11:41 am

ONT

CVG

21h 51m

2 stops

8:40 pm - 8:04 am

CVG

ONT

14h 24m

1 stop

$205Frontier

Tue, May 26 - Fri, May 29

4:39 pm - 7:35 pm

ONT

CVG

23h 56m

1 stop

8:36 pm - 10:05 am

CVG

ONT

16h 29m

1 stop

$210Frontier

Wed, May 27 - Tue, Jun 2

8:00 pm - 10:25 am

ONT

LEX

11h 25m

2 stops

6:00 am - 9:29 am

LEX

ONT

6h 29m

1 stop

$336American Airlines

Wed, Oct 14 - Wed, Oct 21

10:00 pm - 8:50 am

ONT

LEX

7h 50m

1 stop

8:07 pm - 11:59 pm

LEX

ONT

6h 52m

1 stop

$340American Airlines

Sat, May 23 - Sat, May 30

10:00 pm - 9:21 am

ONT

LEX

8h 21m

1 stop

8:30 am - 4:17 pm

LEX

ONT

10h 47m

2 stops

$345Delta

Sat, May 23 - Sat, May 30

11:55 pm - 9:50 am

ONT

SDF

6h 55m

1 stop

7:55 pm - 10:50 pm

SDF

ONT

5h 55m

1 stop

$348Southwest

Tue, Jun 2 - Sat, Jun 6

10:00 pm - 9:24 am

ONT

LEX

8h 24m

1 stop

1:30 pm - 6:01 pm

LEX

ONT

7h 31m

1 stop

$349Delta

Fri, Aug 7 - Thu, Aug 13

12:40 pm - 10:30 pm

ONT

SDF

6h 50m

1 stop

2:55 pm - 10:00 pm

SDF

ONT

10h 05m

2 stops

$353Southwest

Tue, Jun 2 - Sat, Jun 6

7:00 am - 6:19 pm

ONT

PAH

9h 19m

1 stop

2:10 pm - 9:58 pm

PAH

ONT

9h 48m

1 stop

$579United Airlines

Sat, May 9 - Mon, May 18

7:00 am - 6:19 pm

ONT

PAH

9h 19m

1 stop

2:10 pm - 9:58 pm

PAH

ONT

9h 48m

1 stop

$614United Airlines

Sat, May 9 - Mon, May 18

American Airlines flights from Ontario to Kentucky

Our best American Airlines deals on Ontario to Kentucky flight tickets

American Airlines

Oct 14

ONT8:00 pmOntario

11h 25m

2 stops

LEX10:25 amLexington Blue Grass

Oct 21

LEX6:00 amLexington Blue Grass

6h 29m

1 stop

ONT9:29 amOntario

$336

American Airlines

May 23

ONT10:00 pmOntario

7h 50m

1 stop

LEX8:50 amLexington Blue Grass

May 30

LEX8:07 pmLexington Blue Grass

6h 52m

1 stop

ONT11:59 pmOntario

$340

American Airlines

Jun 9

ONT11:59 pmOntario

7h 37m

1 stop

SDF10:36 amLouisville Intl

Jun 10

SDF7:48 pmLouisville Intl

7h 11m

1 stop

ONT11:59 pmOntario

$341

Delta flights from Ontario to Kentucky

Our best Delta deals on Ontario to Kentucky flight tickets

Delta

May 24

ONT12:07 pmOntario

6h 58m

1 stop

BNA9:05 pmNashville Intl

Jun 2

BNA7:27 pmNashville Intl

6h 07m

1 stop

ONT11:34 pmOntario

$321

Delta

May 24

ONT10:00 pmOntario

8h 35m

1 stop

BNA8:35 amNashville Intl

Jun 2

BNA7:27 pmNashville Intl

6h 07m

1 stop

ONT11:34 pmOntario

$322

Delta

Sep 25

ONT10:59 pmOntario

8h 50m

1 stop

BNA9:49 amNashville Intl

Oct 2

BNA7:16 pmNashville Intl

6h 28m

1 stop

ONT11:44 pmOntario

$323

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Tue 5/26

10:50 am-11:41 am

2 stops21h 51m

Cincinnati Cinci./N. Kentucky

Fri 5/29

8:40 pm-8:04 am

1 stop14h 24m

$205

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Wed 5/27

4:39 pm-7:35 pm

1 stop23h 56m

Cincinnati Cinci./N. Kentucky

Tue 6/2

8:36 pm-10:05 am

1 stop16h 29m

$210

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 10/14

8:00 pm-10:25 am

2 stops11h 25m

Lexington Blue Grass

Wed 10/21

6:00 am-9:29 am

1 stop6h 29m

$336

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sat 5/23

10:00 pm-8:50 am

1 stop7h 50m

Lexington Blue Grass

Sat 5/30

8:07 pm-11:59 pm

1 stop6h 52m

$340

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sat 5/23

10:00 pm-9:21 am

1 stop8h 21m

Lexington Blue Grass

Sat 5/30

8:30 am-4:17 pm

2 stops10h 47m

$345

Quickest round-trip

OntarioLouisville

ONT - SDF

ONTSDF

Ontario

Tue 6/2

11:55 pm-9:50 am

1 stop6h 55m

Louisville Intl

Sat 6/6

7:55 pm-10:50 pm

1 stop5h 55m

$348

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Fri 8/7

10:00 pm-9:24 am

1 stop8h 24m

Lexington Blue Grass

Thu 8/13

1:30 pm-6:01 pm

1 stop7h 31m

$349

OntarioLouisville

ONT - SDF

ONTSDF

Ontario

Tue 6/2

12:40 pm-10:30 pm

1 stop6h 50m

Louisville Intl

Sat 6/6

2:55 pm-10:00 pm

2 stops10h 05m

$353

OntarioPaducah

ONT - PAH

ONTPAH

Ontario

Sat 5/9

7:00 am-6:19 pm

1 stop9h 19m

Paducah Barkley Regional

Mon 5/18

2:10 pm-9:58 pm

1 stop9h 48m

$579

OntarioPaducah

ONT - PAH

ONTPAH

Ontario

Sat 5/9

7:00 am-6:19 pm

1 stop9h 19m

Paducah Barkley Regional

Mon 5/18

2:10 pm-9:58 pm

1 stop9h 48m

$614

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Kentucky

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Kentucky?

If you’re not able to fly to Kentucky in June, then July is your next best option. Flight prices from Ontario to Kentucky during July average around $120.

Can stopping save me money on Ontario to Kentucky flights?

You could potentially save up to 20% on your flight if you consider stops on a Ontario to Kentucky flight.

Cheap Ontario to Kentucky flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Kentucky

Fastest flight time	3h 40m
Direct flights	Every day
Airports in Kentucky	43 airports

The fastest flight from Ontario to Kentucky takes 3h 40m

Direct flights go from Ontario to Kentucky every day.

There are 43 airports in Kentucky. From Ontario there are direct flights to Nashville Intl (BNA).

Search flight deals

Frequently asked questions about flying from Ontario to Kentucky

When did momondo last update prices for flights from Ontario Airport to Kentucky?
Prices for flights from Ontario Airport to Kentucky were last updated today.
How many operators does momondo search for flights from Ontario Airport to Kentucky?
As of May 2026, there are 7 operators available to choose from for flights from Ontario Airport to Kentucky.
How old do you have to be to fly from Ontario Airport to Kentucky?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Kentucky.
What documentation or ID do you need to fly to Kentucky?
The travel and health documents required for your trip to Kentucky can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kentucky. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to Kentucky

Compare and see reviews for airlines that fly from Ontario to Kentucky with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $228	Free Cancellation	Rating 7.4 9,680 reviews	Search United Airlines flights
Delta	PriceFrom $238	Free Cancellation	Rating 7.9 8,460 reviews	Search Delta flights
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.1 11,673 reviews	Search American Airlines flights
Southwest	PriceFrom $341	Free Cancellation	Rating 7.9 4,307 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Kentucky?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Kentucky for you.

Can I find flights from Ontario to Kentucky with flexible booking policies on momondo?

Flights from Ontario to Kentucky with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Kentucky?

Once all potential Ontario to Kentucky flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Kentucky right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Kentucky from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.