What airlines fly to Ontario?

American Airlines, Southwest 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.

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

Frontier, Delta, and United Airlines 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 6h 29m on average, while flying from Lexington to Los Angeles is 6h 58m 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 September 2026, 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 September 2026, 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.

$81 Cheap Flights from Kentucky to Ontario in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Kentucky to Los Angeles

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:11 pm - 10:35 amBNA Nashville Intl-ONT Ontario

21h 24m1 stop Denver Intl

6:25 am - 2:16 pmONT Ontario-BNA Nashville Intl

29h 51m1 stop Denver Intl

$164Frontier

Tue, Oct 27 - Tue, Nov 3

3:14 pm - 11:50 pmBNA Nashville Intl-ONT Ontario

10h 36m1 stop Denver Intl

11:52 am - 2:19 pmONT Ontario-BNA Nashville Intl

24h 27m1 stop Denver Intl

$166Frontier

Wed, Oct 14 - Wed, Oct 21

5:20 am - 11:06 amBNA Nashville Intl-ONT Ontario

7h 46m1 stop Atlanta Hartsfield-Jackson

1:35 pm - 11:12 pmONT Ontario-BNA Nashville Intl

7h 37m1 stop Salt Lake City

$260Delta

Sat, Oct 17 - Sat, Oct 24

7:25 am - 12:36 pmBNA Nashville Intl-ONT Ontario

7h 11m1 stop Salt Lake City

1:35 pm - 11:12 pmONT Ontario-BNA Nashville Intl

7h 37m1 stop Salt Lake City

$263Delta

Tue, Oct 6 - Wed, Oct 7

4:39 pm - 10:11 pmBNA Nashville Intl-ONT Ontario

7h 32m1 stop Houston George Bush Intcntl

1:05 pm - 11:15 pmONT Ontario-BNA Nashville Intl

8h 10m1 stop San Francisco

$263United Airlines

Thu, Dec 24 - Thu, Dec 31

5:00 am - 9:41 amBNA Nashville Intl-ONT Ontario

6h 41m1 stop Dallas/Fort Worth

11:59 pm - 9:17 amONT Ontario-BNA Nashville Intl

7h 18m1 stop Dallas/Fort Worth

$263American Airlines

Thu, Feb 25 - Sun, Feb 28

7:00 am - 1:30 pmBNA Nashville Intl-ONT Ontario

8h 30m1 stop Dallas/Fort Worth

11:59 pm - 9:18 amONT Ontario-BNA Nashville Intl

7h 19m1 stop Dallas/Fort Worth

$263American Airlines

Tue, Oct 13 - Tue, Oct 13

8:15 am - 2:01 pmBNA Nashville Intl-ONT Ontario

7h 46m1 stop San Francisco

6:00 am - 5:37 pmONT Ontario-BNA Nashville Intl

9h 37m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$268United Airlines

Tue, Sep 22 - Tue, Sep 29

9:03 am - 7:03 pmBNA Nashville Intl-ONT Ontario

12h 00m1 stop Seattle/Tacoma Intl

6:15 am - 2:18 pmONT Ontario-BNA Nashville Intl

6h 03m1 stop Denver Intl

$293Multiple Airlines

Thu, Oct 1 - Sun, Oct 4

3:46 pm - 6:09 pmBNA Nashville Intl-ONT Ontario

28h 23m1 stop Las Vegas Harry Reid Intl

4:01 pm - 5:40 amONT Ontario-BNA Nashville Intl

11h 39m1 stop Seattle/Tacoma Intl

$295Multiple Airlines

Sat, Nov 21 - Wed, Nov 25

Cheap last minute flights

Enter your travel dates to find the best prices.

12:55 pm - 11:50 pmBNA Nashville Intl-ONT Ontario

12h 55m1 stop Denver Intl

6:15 am - 7:37 pmONT Ontario-BNA Nashville Intl

11h 22m1 stop Denver Intl

$204Frontier

Sun, Sep 6 - Mon, Sep 14

3:14 pm - 11:47 pmBNA Nashville Intl-ONT Ontario

10h 33m1 stop Denver Intl

6:15 am - 2:18 pmONT Ontario-BNA Nashville Intl

6h 03m1 stop Denver Intl

$204Frontier

Fri, Sep 11 - Sun, Sep 13

7:04 am - 11:47 amBNA Nashville Intl-ONT Ontario

6h 43m1 stop Dallas/Fort Worth

2:22 pm - 10:29 pmONT Ontario-BNA Nashville Intl

6h 07m1 stop Dallas/Fort Worth

$263American Airlines

Thu, Sep 10 - Fri, Sep 18

12:45 pm - 11:16 amBNA Nashville Intl-ONT Ontario

24h 31m2 stops Dallas/Fort Worth Seattle/Tacoma Intl

2:30 pm - 1:04 pmONT Ontario-BNA Nashville Intl

20h 34m1 stop Las Vegas Harry Reid Intl

$332Multiple Airlines

Wed, Sep 9 - Sun, Sep 13

12:40 pm - 7:15 pmBNA Nashville Intl-ONT Ontario

8h 35m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

6:00 am - 4:03 pmONT Ontario-BNA Nashville Intl

8h 03m1 stop Dallas/Fort Worth

$350American Airlines

Sun, Sep 6 - Sat, Sep 12

11:17 am - 8:01 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

11h 44m2 stops Chicago O'Hare Intl San Francisco

1:18 pm - 10:32 pmONT Ontario-CVG Cincinnati Cinci./N. Kentucky

6h 14m1 stop Denver Intl

$362United Airlines

Wed, Sep 9 - Fri, Sep 11

2:49 pm - 8:01 pmBNA Nashville Intl-ONT Ontario

7h 12m1 stop San Francisco

6:08 am - 10:45 pmONT Ontario-BNA Nashville Intl

14h 37m2 stops San Francisco Houston George Bush Intcntl

$426United Airlines

Tue, Sep 8 - Thu, Sep 10

5:14 am - 10:42 amBNA Nashville Intl-ONT Ontario

7h 28m1 stop Atlanta Hartsfield-Jackson

6:00 am - 1:57 pmONT Ontario-BNA Nashville Intl

5h 57m1 stop Salt Lake City

$461Delta

Sun, Sep 6 - Mon, Sep 7

9:36 am - 7:36 pmCVG Cincinnati Cinci./N. Kentucky-ONT Ontario

13h 00m1 stop San Francisco

12:07 pm - 6:47 amONT Ontario-CVG Cincinnati Cinci./N. Kentucky

15h 40m2 stops San Francisco Las Vegas Harry Reid Intl

$466Multiple Airlines

Thu, Sep 10 - Sun, Sep 13

4:30 pm - 8:05 pmLEX Lexington Blue Grass-ONT Ontario

6h 35m1 stop Atlanta Hartsfield-Jackson

10:00 pm - 9:22 amONT Ontario-LEX Lexington Blue Grass

8h 22m1 stop Atlanta Hartsfield-Jackson

$569Delta

Thu, Sep 10 - Mon, Sep 14

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Frontier flights from Kentucky to Ontario

Our best Frontier deals on Kentucky to Ontario flight tickets

Frontier

Oct 27

BNA3:11 pmNashville Intl

21h 24m

1 stop

ONT10:35 amOntario

Nov 3

ONT6:25 amOntario

29h 51m

1 stop

BNA2:16 pmNashville Intl

$164

Frontier

Oct 14

BNA3:14 pmNashville Intl

10h 36m

1 stop

ONT11:50 pmOntario

Oct 21

ONT11:52 amOntario

24h 27m

1 stop

BNA2:19 pmNashville Intl

$166

Frontier

Oct 29

BNA3:11 pmNashville Intl

10h 40m

1 stop

ONT11:51 pmOntario

Nov 3

ONT6:25 amOntario

5h 51m

1 stop

BNA2:16 pmNashville Intl

$174

Delta flights from Kentucky to Ontario

Our best Delta deals on Kentucky to Ontario flight tickets

Delta

Oct 17

BNA5:20 amNashville Intl

7h 46m

1 stop

ONT11:06 amOntario

Oct 24

ONT1:35 pmOntario

7h 37m

1 stop

BNA11:12 pmNashville Intl

$260

Delta

Oct 17

BNA5:20 amNashville Intl

7h 46m

1 stop

ONT11:06 amOntario

Oct 24

ONT1:35 pmOntario

7h 37m

1 stop

BNA11:12 pmNashville Intl

$261

Delta

Oct 15

BNA10:54 amNashville Intl

9h 28m

1 stop

ONT6:22 pmOntario

Oct 19

ONT11:08 pmOntario

8h 41m

1 stop

BNA9:49 amNashville Intl

$263

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

NashvilleOntario

BNA Nashville Intl - ONT Ontario

BNAONT

Nashville Intl

Tue 10/27

3:11 pm-10:35 am

1 stop21h 24m

Ontario

Tue 11/3

6:25 am-2:16 pm

1 stop29h 51m

$164

NashvilleOntario

BNA Nashville Intl - ONT Ontario

BNAONT

Nashville Intl

Wed 10/14

3:14 pm-11:50 pm

1 stop10h 36m

Ontario

Wed 10/21

11:52 am-2:19 pm

1 stop24h 27m

$166

NashvilleOntario

BNA Nashville Intl - ONT Ontario

BNAONT

Nashville Intl

Sat 10/17

5:20 am-11:06 am

1 stop7h 46m

Ontario

Sat 10/24

1:35 pm-11:12 pm

1 stop7h 37m

$260

NashvilleOntario

BNA Nashville Intl - ONT Ontario

BNAONT

Nashville Intl

Tue 10/6

7:25 am-12:36 pm

1 stop7h 11m

Ontario

Wed 10/7

1:35 pm-11:12 pm

1 stop7h 37m

$263

NashvilleOntario

BNA Nashville Intl - ONT Ontario

BNAONT

Nashville Intl

Thu 12/24

4:39 pm-10:11 pm

1 stop7h 32m

Ontario

Thu 12/31

1:05 pm-11:15 pm

1 stop8h 10m

$263

Quickest round-trip

NashvilleOntario

BNA Nashville Intl - ONT Ontario

BNAONT

Nashville Intl

Thu 2/25

5:00 am-9:41 am

1 stop6h 41m

Ontario

Sun 2/28

11:59 pm-9:17 am

1 stop7h 18m

$263

NashvilleOntario

BNA Nashville Intl - ONT Ontario

BNAONT

Nashville Intl

Tue 10/13

7:00 am-1:30 pm

1 stop8h 30m

Ontario

Tue 10/13

11:59 pm-9:18 am

1 stop7h 19m

$263

NashvilleOntario

BNA Nashville Intl - ONT Ontario

BNAONT

Nashville Intl

Tue 9/22

8:15 am-2:01 pm

1 stop7h 46m

Ontario

Tue 9/29

6:00 am-5:37 pm

2 stops9h 37m

$268

NashvilleOntario

BNA Nashville Intl - ONT Ontario

BNAONT

Nashville Intl

Thu 10/1

9:03 am-7:03 pm

1 stop12h 00m

Ontario

Sun 10/4

6:15 am-2:18 pm

1 stop6h 03m

$293

NashvilleOntario

BNA Nashville Intl - ONT Ontario

BNAONT

Nashville Intl

Sat 11/21

3:46 pm-6:09 pm

1 stop28h 23m

Ontario

Wed 11/25

4:01 pm-5:40 am

1 stop11h 39m

$295

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, March 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 $359. If you aren’t able to travel during the month of March, then book flights to Ontario from Kentucky during June instead. Flights to Ontario in June, while not as cheap as those in March, still average around $385.

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	$81
Fastest flight time	4h 05m
Direct flights	Every day
Airports in Ontario	1 airport

The best one-way flight to Ontario from Kentucky in the past 72 hours is $81. The best round-trip flight deal from Kentucky to Ontario found on momondo in the last 72 hours is $164.

The fastest flight from Kentucky to Ontario takes 4h 05m

Direct flights go from Kentucky to Ontario every day.

There is 1 airport in Ontario. From Kentucky there are direct flights to Ontario (ONT).

Search flight deals

Frequently asked questions about flying from Kentucky to Ontario

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 September 2026, 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
Delta	PriceFrom $288	Free Cancellation	Rating 7.8 8,570 reviews	Search Delta flights
American Airlines	PriceFrom $324	Free Cancellation	Rating 7.1 12,050 reviews	Search American Airlines flights
Southwest	PriceFrom $331	Free Cancellation	Rating 8.0 4,200 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.

An easier way to manage your Ontario trip

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Cheap flights from Kentucky to Los Angeles from $81

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kentucky to Los Angeles departing on 11/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Kentucky to Ontario

Our best Frontier deals on Kentucky to Ontario flight tickets

Delta flights from Kentucky to Ontario

Our best Delta deals on Kentucky to Ontario flight tickets

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How to get the cheapest flight ticket from Kentucky to Ontario

What is the cheapest month to fly to Ontario?

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

What airlines fly to Ontario?

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

How long does it take to fly to Ontario?

Cheap Kentucky to Ontario flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Ontario

Frequently asked questions about flying from Kentucky to Ontario

Best airlines flying from Kentucky to Ontario

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

Why use momondo?

An easier way to manage your Ontario 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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Fly your favorite airline to Los Angeles

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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