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 37% 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.

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

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

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 30m on average, while flying from Lexington to Los Angeles is 6h 37m on average. Los Angeles is the most popular airport in Ontario.

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

As of July 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.

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 July 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.

$107 Cheap Flights from Kentucky to Ontario in 2025

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Find the cheapest flights from Kentucky to Los Angeles

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

7:27 pm - 11:50 pmBNA-ONT

6h 23m1 stop

5:09 pm - 12:56 amONT-BNA

5h 47m1 stop

$236Frontier

Find Deal

Mon, Aug 11 - Fri, Aug 22

7:00 am - 11:50 pmBNA-ONT

18h 50m1 stop

12:59 am - 12:02 amONT-BNA

21h 03m1 stop

$239Frontier

Find Deal

Tue, Aug 12 - Fri, Aug 15

5:15 am - 10:35 amBNA-ONT

7h 20m1 stop

6:00 am - 1:42 pmONT-BNA

5h 42m1 stop

$263Delta

Find Deal

Thu, Sep 4 - Thu, Sep 11

5:27 pm - 11:54 pmBNA-ONT

8h 27m1 stop

11:39 am - 12:08 amONT-BNA

10h 29m1 stop

$264Alaska Airlines

Find Deal

Fri, Sep 5 - Mon, Sep 8

5:15 am - 12:14 pmBNA-ONT

8h 59m2 stops

1:15 pm - 9:56 pmONT-BNA

6h 41m1 stop

$270Delta

Find Deal

Wed, Aug 27 - Wed, Sep 3

9:00 am - 6:28 pmBNA-ONT

11h 28m1 stop

7:22 pm - 5:40 amONT-BNA

8h 18m1 stop

$291Alaska Airlines

Find Deal

Tue, Aug 26 - Sun, Aug 31

12:20 pm - 5:52 pmTYS-ONT

8h 32m2 stops

11:59 pm - 1:03 pmONT-TYS

10h 04m2 stops

$299American Airlines

Find Deal

Fri, Aug 22 - Sun, Aug 24

6:00 am - 11:32 amBNA-ONT

7h 32m2 stops

12:22 pm - 11:15 pmONT-BNA

8h 53m2 stops

$302American Airlines

Find Deal

Tue, Aug 26 - Tue, Sep 2

4:15 pm - 6:25 pmBNA-ONT

4h 10mnonstop

6:45 am - 12:45 pmONT-BNA

4h 00mnonstop

$317Southwest

Find Deal

Wed, Aug 27 - Wed, Sep 3

4:15 pm - 6:25 pmBNA-ONT

4h 10mnonstop

3:35 pm - 12:05 amONT-BNA

6h 30m1 stop

$327Southwest

Find Deal

Wed, Aug 27 - Wed, Sep 3

Frontier flights from Kentucky to Ontario

Our best Frontier deals on Kentucky to Ontario flight tickets

Frontier

Aug 11

BNA7:27 pmNashville Intl

6h 23m

1 stop

ONT11:50 pmOntario

Aug 22

ONT5:09 pmOntario

5h 47m

1 stop

BNA12:56 amNashville Intl

$236

Find similar

Frontier

Aug 9

BNA7:00 amNashville Intl

18h 50m

1 stop

ONT11:50 pmOntario

Aug 11

ONT12:59 amOntario

21h 03m

1 stop

BNA12:02 amNashville Intl

$238

Find similar

Frontier

Aug 5

BNA6:20 amNashville Intl

28h 49m

1 stop

ONT9:09 amOntario

Aug 12

ONT5:21 pmOntario

28h 41m

1 stop

BNA12:02 amNashville Intl

$239

Find similar

United Airlines flights from Kentucky to Ontario

Our best United Airlines deals on Kentucky to Ontario flight tickets

United Airlines

Jan 17

LEX11:20 amLexington Blue Grass

11h 57m

2 stops

ONT8:17 pmOntario

Jan 24

ONT5:40 amOntario

8h 15m

2 stops

LEX4:55 pmLexington Blue Grass

$321

Find similar

United Airlines

Aug 27

CVG3:31 pmCincinnati Cinci./N. Kentucky

8h 12m

1 stop

ONT8:43 pmOntario

Sep 3

ONT5:10 amOntario

10h 17m

2 stops

CVG6:27 pmCincinnati Cinci./N. Kentucky

$324

Find similar

United Airlines

Sep 2

SDF9:31 amLouisville Intl

6h 01m

1 stop

ONT12:32 pmOntario

Sep 4

ONT5:10 amOntario

6h 18m

1 stop

SDF2:28 pmLouisville Intl

$326

Find similar

Fly from

Fly to

Route

Depart

Return

Price

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Mon 8/11

7:27 pm-11:50 pm

1 stop6h 23m

Ontario

Fri 8/22

5:09 pm-12:56 am

1 stop5h 47m

$236

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Tue 8/12

7:00 am-11:50 pm

1 stop18h 50m

Ontario

Fri 8/15

12:59 am-12:02 am

1 stop21h 03m

$239

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Thu 9/4

5:15 am-10:35 am

1 stop7h 20m

Ontario

Thu 9/11

6:00 am-1:42 pm

1 stop5h 42m

$263

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Fri 9/5

5:27 pm-11:54 pm

1 stop8h 27m

Ontario

Mon 9/8

11:39 am-12:08 am

1 stop10h 29m

$264

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Wed 8/27

5:15 am-12:14 pm

2 stops8h 59m

Ontario

Wed 9/3

1:15 pm-9:56 pm

1 stop6h 41m

$270

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Tue 8/26

9:00 am-6:28 pm

1 stop11h 28m

Ontario

Sun 8/31

7:22 pm-5:40 am

1 stop8h 18m

$291

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Fri 8/22

12:20 pm-5:52 pm

2 stops8h 32m

Ontario

Sun 8/24

11:59 pm-1:03 pm

2 stops10h 04m

$299

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Tue 8/26

6:00 am-11:32 am

2 stops7h 32m

Ontario

Tue 9/2

12:22 pm-11:15 pm

2 stops8h 53m

$302

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Wed 8/27

4:15 pm-6:25 pm

Nonstop4h 10m

Ontario

Wed 9/3

6:45 am-12:45 pm

Nonstop4h 00m

$317

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Wed 8/27

4:15 pm-6:25 pm

Nonstop4h 10m

Ontario

Wed 9/3

3:35 pm-12:05 am

1 stop6h 30m

$327

Flights are sorted by cheapest round-trip flights first.

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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, April 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 $364. If you aren’t able to travel during the month of April, then book flights to Ontario from Kentucky during June instead. Flights to Ontario in June, while not as cheap as those in April, still average around $411.

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

Best Price Found	$107
Fastest flight time	4h 10m
Direct flights	Every day
Airports in Ontario	1 airport

The best one-way flight to Ontario from Kentucky in the past 72 hours is $107. The best round-trip flight deal from Kentucky to Ontario found on momondo in the last 72 hours is $236.

The fastest flight from Kentucky to Ontario takes 4h 10m

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 July 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
United Airlines	PriceFrom $257	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $288	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Southwest	PriceFrom $315	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest 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.