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

Frontier and American Airlines are the most popular carriers operating from Kentucky to Ontario

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

As of November 2025, there are 6 flights per week flying from Kentucky to Ontario. The most common day of the week flights depart is Mon, with 33% of flights taking off on this day.

How long does it take to fly to Ontario?

Average flight duration from Kentucky to Ontario depends on which airport you fly into and out of. Flying from Louisville to Los Angeles is 4h 37m on average, while flying from Lexington to Los Angeles is 7h 03m on average. Los Angeles is the most popular airport in Ontario.

What airlines fly to Ontario?

American Airlines, Spirit Airlines and Delta are the top three most popular airlines that fly to Ontario from Kentucky according to our data. American Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 5 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Kentucky to Ontario Airport refresh daily.

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

As of November 2025, there are 5 operators available to choose from for flights from Kentucky to Ontario Airport.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Kentucky to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$65 Cheap Flights from Kentucky to Ontario in 2025/26

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Find the cheapest flights from Kentucky to Los Angeles

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:12 pm - 11:59 pmBNA-ONT

6h 47m1 stop

6:00 am - 6:17 pmONT-BNA

10h 17m1 stop

$130Frontier

Find Deal

Thu, Jan 29 - Mon, Feb 2

6:15 am - 11:59 pmCVG-ONT

20h 44m1 stop

7:30 am - 1:15 pmONT-CVG

26h 45m1 stop

$130Frontier

Find Deal

Thu, Jan 8 - Sat, Jan 10

7:25 pm - 11:55 pmBNA-ONT

6h 30m1 stop

3:04 pm - 10:59 pmONT-BNA

5h 55m1 stop

$179American Airlines

Find Deal

Thu, Dec 4 - Wed, Dec 10

5:05 am - 11:59 pmBNA-ONT

20h 54m2 stops

6:30 am - 12:59 amONT-BNA

16h 29m1 stop

$208Multiple Airlines

Find Deal

Fri, Jan 9 - Mon, Jan 12

9:00 pm - 9:17 pmBNA-ONT

26h 17m1 stop

12:30 pm - 10:27 pmONT-BNA

31h 57m2 stops

$218Multiple Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

3:55 pm - 11:29 pmBNA-ONT

9h 34m1 stop

7:10 am - 4:45 pmONT-BNA

7h 35m1 stop

$261Alaska Airlines

Find Deal

Thu, Dec 4 - Wed, Dec 10

3:55 pm - 11:29 pmBNA-ONT

9h 34m1 stop

7:10 am - 4:45 pmONT-BNA

7h 35m1 stop

$263Alaska Airlines

Find Deal

Thu, Dec 4 - Wed, Dec 10

5:43 pm - 10:02 pmBNA-ONT

6h 19m1 stop

11:59 pm - 8:48 amONT-BNA

6h 49m1 stop

$269American Airlines

Find Deal

Tue, Mar 10 - Wed, Mar 11

7:23 pm - 11:58 pmBNA-ONT

6h 35m1 stop

10:25 pm - 8:22 amONT-BNA

7h 57m1 stop

$283Delta

Find Deal

Thu, Dec 4 - Wed, Dec 10

7:23 pm - 11:58 pmBNA-ONT

6h 35m1 stop

6:00 am - 2:22 pmONT-BNA

6h 22m1 stop

$285Delta

Find Deal

Thu, Dec 4 - Wed, Dec 10

American Airlines flights from Kentucky to Ontario

Our best American Airlines deals on Kentucky to Ontario flight tickets

American Airlines

Dec 4

BNA7:25 pmNashville Intl

6h 30m

1 stop

ONT11:55 pmOntario

Dec 10

ONT3:04 pmOntario

5h 55m

1 stop

BNA10:59 pmNashville Intl

$179

Find similar

American Airlines

Mar 10

BNA5:43 pmNashville Intl

6h 19m

1 stop

ONT10:02 pmOntario

Mar 11

ONT11:59 pmOntario

6h 49m

1 stop

BNA8:48 amNashville Intl

$269

Find similar

American Airlines

Dec 2

BNA10:18 amNashville Intl

10h 04m

2 stops

ONT6:22 pmOntario

Dec 9

ONT6:17 amOntario

8h 08m

2 stops

BNA4:25 pmNashville Intl

$295

Find similar

Frontier flights from Kentucky to Ontario

Our best Frontier deals on Kentucky to Ontario flight tickets

Frontier

Jan 8

CVG6:15 amCincinnati Cinci./N. Kentucky

20h 44m

1 stop

ONT11:59 pmOntario

Jan 10

ONT7:30 amOntario

26h 45m

1 stop

CVG1:15 pmCincinnati Cinci./N. Kentucky

$130

Find similar

Frontier

Dec 4

CVG6:10 amCincinnati Cinci./N. Kentucky

7h 59m

1 stop

ONT11:09 amOntario

Dec 4

ONT2:59 pmOntario

5h 59m

1 stop

CVG11:58 pmCincinnati Cinci./N. Kentucky

$133

Find similar

Frontier

Nov 20

BNA8:46 pmNashville Intl

12h 34m

1 stop

ONT7:20 amOntario

Nov 24

ONT12:58 amOntario

12h 24m

1 stop

BNA3:22 pmNashville Intl

$134

Find similar

Fly from

Fly to

Route

Depart

Return

Price

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Thu 1/29

7:12 pm-11:59 pm

1 stop6h 47m

Ontario

Mon 2/2

6:00 am-6:17 pm

1 stop10h 17m

$130

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 1/8

6:15 am-11:59 pm

1 stop20h 44m

Ontario

Sat 1/10

7:30 am-1:15 pm

1 stop26h 45m

$130

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Thu 12/4

7:25 pm-11:55 pm

1 stop6h 30m

Ontario

Wed 12/10

3:04 pm-10:59 pm

1 stop5h 55m

$179

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Fri 1/9

5:05 am-11:59 pm

2 stops20h 54m

Ontario

Mon 1/12

6:30 am-12:59 am

1 stop16h 29m

$208

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Tue 12/2

9:00 pm-9:17 pm

1 stop26h 17m

Ontario

Tue 12/9

12:30 pm-10:27 pm

2 stops31h 57m

$218

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Thu 12/4

3:55 pm-11:29 pm

1 stop9h 34m

Ontario

Wed 12/10

7:10 am-4:45 pm

1 stop7h 35m

$261

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Thu 12/4

3:55 pm-11:29 pm

1 stop9h 34m

Ontario

Wed 12/10

7:10 am-4:45 pm

1 stop7h 35m

$263

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Tue 3/10

5:43 pm-10:02 pm

1 stop6h 19m

Ontario

Wed 3/11

11:59 pm-8:48 am

1 stop6h 49m

$269

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Thu 12/4

7:23 pm-11:58 pm

1 stop6h 35m

Ontario

Wed 12/10

10:25 pm-8:22 am

1 stop7h 57m

$283

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Thu 12/4

7:23 pm-11:58 pm

1 stop6h 35m

Ontario

Wed 12/10

6:00 am-2:22 pm

1 stop6h 22m

$285

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 Kentucky to Ontario

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 Ontario?

In general, September is the cheapest month to fly from Kentucky to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $343. If you aren’t able to travel during the month of September, then book flights to Ontario from Kentucky during August instead. Flights to Ontario in August, while not as cheap as those in September, still average around $344.

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

The cheapest day to depart on your flight to Ontario is on a Thursday when prices can be found for as low as $461. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Kentucky to Ontario for around $597.

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

In the evening is the cheapest time of day to fly from Kentucky to Ontario when you can find flight prices for as low as $417. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $665 on average. Flights to Ontario from Kentucky at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Cheap Kentucky to Ontario flight deals and tips

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

Fastest flight time	4h 25m
Direct flights	Every day
Airports in Ontario	1 airport

The fastest flight from Kentucky to Ontario takes 4h 25m

Direct flights go from Kentucky to Ontario every day.

There is 1 airport near Ontario: Ontario (ONT)

Search flight deals

When did momondo last update prices for flights from Kentucky to Ontario Airport?
Prices for flights from Kentucky to Ontario Airport refresh daily.
How many operators does momondo search for flights from Kentucky to Ontario Airport?
As of November 2025, there are 5 operators available to choose from for flights from Kentucky to Ontario Airport.
How old do you have to be to fly from Kentucky to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Kentucky to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Kentucky to Ontario

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $268	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights
Delta	PriceFrom $288	Free Cancellation	Rating 7.9 8,003 reviews	Search Delta flights
Southwest	PriceFrom $302	Free Cancellation	Rating 8.0 4,239 reviews	Search Southwest flights
United Airlines	PriceFrom $344	Free Cancellation	Rating 7.4 9,002 reviews	Search United Airlines flights

Why use momondo?

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

Finding the right flight to Ontario from Kentucky is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Ontario from Kentucky with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Kentucky to Ontario.

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

If you are not ready to book a flight from Kentucky to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.