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Cheap flights from Ontario to Kentucky from $61

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Kentucky departing on 1/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Kentucky

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:00 am - 6:36 pmONT-BNA
10h 36m1 stop
Frontier Logo
7:31 pm - 10:59 pmBNA-ONT
29h 28m1 stop
$129Frontier
Find Deal
Fri, Jan 9 - Mon, Jan 12
Frontier Logo
6:20 am - 8:48 pmONT-CVG
11h 28m1 stop
Frontier Logo
1:45 pm - 12:20 amCVG-ONT
13h 35m1 stop
$140Frontier
Find Deal
Thu, Jan 22 - Sun, Jan 25
Multiple Airlines Logo
6:10 am - 6:32 pmONT-BNA
10h 22m1 stop
Multiple Airlines Logo
5:44 pm - 3:07 pmBNA-ONT
23h 23m2 stops
$192Multiple Airlines
Find Deal
Fri, Jan 16 - Tue, Jan 20
Multiple Airlines Logo
3:04 pm - 11:01 amONT-LEX
16h 57m2 stops
Multiple Airlines Logo
2:07 pm - 7:32 pmLEX-ONT
8h 25m1 stop
$285Multiple Airlines
Find Deal
Sat, Jan 24 - Sun, Jan 25
Delta Logo
10:30 pm - 10:27 amONT-LEX
8h 57m1 stop
Delta Logo
7:13 am - 11:31 amLEX-ONT
7h 18m1 stop
$289Delta
Find Deal
Tue, Jan 6 - Sat, Jan 31
Delta Logo
10:30 pm - 9:42 amONT-LEX
8h 12m1 stop
Delta Logo
5:00 pm - 9:05 pmLEX-ONT
7h 05m1 stop
$314Delta
Find Deal
Sat, Feb 7 - Sat, Feb 14
American Airlines Logo
9:59 am - 10:47 pmONT-TYS
9h 48m2 stops
American Airlines Logo
6:00 am - 10:08 amTYS-ONT
7h 08m1 stop
$324American Airlines
Find Deal
Sat, Jan 17 - Tue, Jan 20
United Airlines Logo
6:32 pm - 10:32 amONT-TYS
13h 00m2 stops
United Airlines Logo
1:59 pm - 10:53 pmTYS-ONT
11h 54m2 stops
$329United Airlines
Find Deal
Sat, Jan 17 - Tue, Jan 20
United Airlines Logo
11:59 pm - 10:15 amONT-TYS
7h 16m1 stop
United Airlines Logo
4:25 pm - 8:58 pmTYS-ONT
7h 33m1 stop
$368United Airlines
Find Deal
Mon, Dec 29 - Sat, Jan 10
American Airlines Logo
12:45 pm - 9:34 pmONT-SDF
5h 49m1 stop
American Airlines Logo
8:12 pm - 11:46 pmSDF-ONT
6h 34m1 stop
$379American Airlines
Find Deal
Thu, Dec 25 - Sun, Jan 4

Frontier flights from Ontario to Kentucky

Our best Frontier deals on Ontario to Kentucky flight tickets
Frontier
Jan 9
ONT6:00 amOntario
10h 36m
1 stop
BNA6:36 pmNashville Intl
Jan 12
BNA7:31 pmNashville Intl
29h 28m
1 stop
ONT10:59 pmOntario
$129
Find similar
Frontier
Jan 22
ONT6:20 amOntario
11h 28m
1 stop
CVG8:48 pmCincinnati Cinci./N. Kentucky
Jan 25
CVG1:45 pmCincinnati Cinci./N. Kentucky
13h 35m
1 stop
ONT12:20 amOntario
$140
Find similar
Frontier
Jan 8
ONT6:00 amOntario
10h 36m
1 stop
BNA6:36 pmNashville Intl
Jan 12
BNA7:31 pmNashville Intl
29h 28m
1 stop
ONT10:59 pmOntario
$147
Find similar

United Airlines flights from Ontario to Kentucky

Our best United Airlines deals on Ontario to Kentucky flight tickets
United Airlines
Jan 17
ONT6:32 pmOntario
13h 00m
2 stops
TYS10:32 amKnoxville McGhee Tyson
Jan 20
TYS1:59 pmKnoxville McGhee Tyson
11h 54m
2 stops
ONT10:53 pmOntario
$329
Find similar
United Airlines
Dec 29
ONT11:59 pmOntario
7h 16m
1 stop
TYS10:15 amKnoxville McGhee Tyson
Jan 10
TYS4:25 pmKnoxville McGhee Tyson
7h 33m
1 stop
ONT8:58 pmOntario
$368
Find similar
United Airlines
Dec 29
ONT11:59 pmOntario
7h 16m
1 stop
TYS10:15 amKnoxville McGhee Tyson
Jan 10
TYS11:07 amKnoxville McGhee Tyson
12h 51m
2 stops
ONT8:58 pmOntario
$373
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated November 26, 2025.
Use the filters below to find and compare flights from Ontario to Kentucky that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Fri 1/9

6:00 am-6:36 pm

1 stop10h 36m

Nashville Intl

Mon 1/12

7:31 pm-10:59 pm

1 stop29h 28m

$129

OntarioCincinnati

ONT - CVG

ONTCVG

Ontario

Thu 1/22

6:20 am-8:48 pm

1 stop11h 28m

Cincinnati Cinci./N. Kentucky

Sun 1/25

1:45 pm-12:20 am

1 stop13h 35m

$140

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Fri 1/16

6:10 am-6:32 pm

1 stop10h 22m

Nashville Intl

Tue 1/20

5:44 pm-3:07 pm

2 stops23h 23m

$192

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sat 1/24

3:04 pm-11:01 am

2 stops16h 57m

Lexington Blue Grass

Sun 1/25

2:07 pm-7:32 pm

1 stop8h 25m

$285

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Tue 1/6

10:30 pm-10:27 am

1 stop8h 57m

Lexington Blue Grass

Sat 1/31

7:13 am-11:31 am

1 stop7h 18m

$289

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sat 2/7

10:30 pm-9:42 am

1 stop8h 12m

Lexington Blue Grass

Sat 2/14

5:00 pm-9:05 pm

1 stop7h 05m

$314

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Sat 1/17

9:59 am-10:47 pm

2 stops9h 48m

Knoxville McGhee Tyson

Tue 1/20

6:00 am-10:08 am

1 stop7h 08m

$324

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Sat 1/17

6:32 pm-10:32 am

2 stops13h 00m

Knoxville McGhee Tyson

Tue 1/20

1:59 pm-10:53 pm

2 stops11h 54m

$329

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Mon 12/29

11:59 pm-10:15 am

1 stop7h 16m

Knoxville McGhee Tyson

Sat 1/10

4:25 pm-8:58 pm

1 stop7h 33m

$368

OntarioLouisville

ONT - SDF

ONTSDF

Ontario

Thu 12/25

12:45 pm-9:34 pm

1 stop5h 49m

Louisville Intl

Sun 1/4

8:12 pm-11:46 pm

1 stop6h 34m

$379

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Kentucky from

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

What is the cheapest month to fly to Kentucky?

If you’re not able to fly to Kentucky in February, then April is your next best option. Flight prices from Ontario to Kentucky during April average around $403.

What is the cheapest day to depart on your flight to Kentucky?

Our data shows that Saturday is the least expensive day to fly to Kentucky. Tickets to fly out on this day can be as low as $483. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $516. These prices are subject to change though, so be sure to set up a Price Alert for flights to Kentucky.

What is the cheapest time of day to depart on your flight to Kentucky?

According to our data, the cheapest time of day to fly to Kentucky is in the evening. momondo users have found flights departing from Ontario to Kentucky in the evening for as low as $492. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Kentucky is in the afternoon when prices are around $536.

Can stopping save me money on Ontario to Kentucky flights?

You could potentially save up to 17% 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

1 airport
The fastest flight from Ontario to Kentucky takes 3h 40m
Direct flights go from Ontario to Kentucky every day.
There is 1 airport near Kentucky: Nashville Intl (BNA)
Search flight deals

  • 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?

  • 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
American AirlinesPriceFrom $288Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
DeltaPriceFrom $288Free CancellationRating
7.9
7,999 reviews
Search Delta flights
SouthwestPriceFrom $342Free CancellationRating
8.0
4,254 reviews
Search Southwest flights
United AirlinesPriceFrom $343Free CancellationRating
7.4
9,046 reviews
Search United Airlines 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.

An easier way to manage your Kentucky trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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