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Cheap flights from Ontario (ONT) to Kentucky from $138

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — SDF
May 11 — May 181
From?
To?
Sat 5/11
Sat 5/18
1 adult, Economy
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How far in advance should I book a flight from Ontario to Kentucky?

Find a great deal and save up to 88% by booking at least 19 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ontario to Kentucky within the next two weeks, with the cheapest ticket starting at $121.

What is the cheapest month to fly from Ontario to Kentucky?

August can be a great time to fly to Kentucky from Ontario with a flight ticket averaging about $257. Cheapflights users have found deals in the month of August for as cheap as $87. The most expensive prices can be found in the month of March.

When is the cheapest time to fly from Ontario to Kentucky (ONT - KY)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Kentucky as you normally would.

Cheap American Airlines flights from Ontario to Kentucky

Explore cheap flight options specifically provided by American Airlines for the route between Ontario and Kentucky. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 6, 2024.
Check out some of the cheapest American Airlines flights we've come across from Ontario to Kentucky. It's recommended that users confirm their flight details before booking.
Sat 10/511:59 pmONT - SDF
1 stop7h 16mAmerican Airlines
Mon 10/76:02 pmSDF - ONT
1 stop6h 58mAmerican Airlines
Deal found 5/4$440
Sat 10/512:40 pmONT - SDF
2 stops8h 05mAmerican Airlines
Mon 10/76:02 pmSDF - ONT
1 stop6h 58mAmerican Airlines
Deal found 5/4$445
Mon 6/1012:49 pmONT - SDF
1 stop6h 40mAmerican Airlines
Tue 6/185:31 pmSDF - ONT
1 stop8h 28mAmerican Airlines
Deal found 5/5$460
Fri 7/57:16 pmONT - SDF
2 stops12h 00mAmerican Airlines
Sun 7/78:06 amSDF - ONT
1 stop8h 43mAmerican Airlines
Deal found 5/5$467
Mon 9/211:59 pmONT - SDF
1 stop7h 17mAmerican Airlines
Mon 9/94:02 pmSDF - ONT
1 stop8h 58mAmerican Airlines
Deal found 5/4$480
Mon 9/211:59 pmONT - SDF
1 stop7h 17mAmerican Airlines
Mon 9/94:02 pmSDF - ONT
2 stops8h 42mAmerican Airlines
Deal found 5/4$485
Mon 5/277:31 amONT - SDF
1 stop7h 11mAmerican Airlines
Sat 6/14:37 pmSDF - ONT
1 stop6h 31mAmerican Airlines
Deal found 5/5$493
Mon 5/2710:34 amONT - SDF
1 stop8h 48mAmerican Airlines
Sat 6/13:39 pmSDF - ONT
2 stops9h 50mAmerican Airlines
Deal found 5/5$496
Mon 5/276:45 amONT - SDF
2 stops7h 26mAmerican Airlines
Sat 6/13:39 pmSDF - ONT
2 stops9h 50mAmerican Airlines
Deal found 5/5$501

Cheap United Airlines flights from Ontario to Kentucky

Explore cheap flight options specifically provided by United Airlines for the route between Ontario and Kentucky. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 6, 2024.
Browse through some of the cheapest United Airlines flights traveling from Ontario to Kentucky. Check back soon if you're not seeing flights that suit your needs.
Thu 5/305:15 amONT - SDF
1 stop6h 17mUnited Airlines
Tue 6/43:28 pmSDF - ONT
1 stop8h 20mUnited Airlines
Deal found 5/4$498
Tue 5/145:15 amONT - LEX
1 stop6h 34mUnited Airlines
Sat 5/184:13 pmLEX - ONT
1 stop7h 40mUnited Airlines
Deal found 5/5$534
Mon 9/96:45 pmONT - LEX
2 stops13h 57mUnited Airlines
Mon 9/169:00 amLEX - ONT
1 stop15h 02mUnited Airlines
Deal found 5/4$539
Tue 7/231:35 pmONT - SDF
1 stop5h 53mUnited Airlines
Sun 7/283:35 pmSDF - ONT
1 stop8h 13mUnited Airlines
Deal found 5/4$552
Thu 6/205:15 amONT - SDF
1 stop6h 17mUnited Airlines
Wed 7/39:15 amSDF - ONT
2 stops16h 30mUnited Airlines
Deal found 5/5$574
Thu 5/235:15 amONT - SDF
1 stop6h 17mUnited Airlines
Tue 5/283:28 pmSDF - ONT
1 stop8h 20mUnited Airlines
Deal found 5/4$584
Mon 6/245:15 amONT - SDF
1 stop14h 03mUnited Airlines
Mon 7/13:35 pmSDF - ONT
1 stop8h 13mUnited Airlines
Deal found 5/4$585
Sat 10/51:55 pmONT - SDF
2 stops16h 57mUnited Airlines
Mon 10/75:50 pmSDF - ONT
2 stops21h 42mUnited Airlines
Deal found 5/4$589
Mon 6/176:25 pmONT - LEX
2 stops15h 51mUnited Airlines
Tue 6/259:36 amLEX - ONT
1 stop14h 12mUnited Airlines
Deal found 5/5$591

Cheap Ontario to Kentucky flights in May & June 2024

Find cheap flight options from Ontario to Kentucky specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,719,943 searches. Prices were last updated on May 6, 2024.
These are some of the best deals we've found on flights to Kentucky in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Thu 6/610:00 pmONT - LEX
1 stop8h 37mDelta
Sun 6/236:26 pmLEX - ONT
1 stop7h 34mDelta
Deal found 5/5$276
Thu 6/610:00 pmONT - LEX
2 stops9h 10mDelta
Sun 6/236:26 pmLEX - ONT
1 stop7h 34mDelta
Deal found 5/5$281
Fri 5/1010:29 pmONT - LEX
1 stop8h 57mAmerican Airlines
Mon 5/138:22 pmLEX - ONT
1 stop6h 34mAmerican Airlines
Deal found 5/5$411
Fri 5/1010:29 pmONT - LEX
1 stop8h 57mAmerican Airlines
Mon 5/133:03 pmLEX - ONT
2 stops10h 26mAmerican Airlines
Deal found 5/5$415
Fri 5/109:30 amONT - LEX
2 stops10h 23mAmerican Airlines
Mon 5/131:08 pmLEX - ONT
2 stops12h 21mAmerican Airlines
Deal found 5/5$421
Fri 5/2410:00 pmONT - LEX
1 stop8h 25mDelta
Mon 5/273:44 pmLEX - ONT
1 stop7h 22mDelta
Deal found 5/5$424
Mon 6/1012:49 pmONT - SDF
1 stop6h 40mAmerican Airlines
Tue 6/185:31 pmSDF - ONT
1 stop8h 28mAmerican Airlines
Deal found 5/5$460
Tue 5/1412:50 pmONT - LEX
1 stop8h 05mDelta
Sat 5/186:00 amLEX - ONT
1 stop8h 40mDelta
Deal found 5/4$460
Tue 5/1412:50 pmONT - LEX
1 stop8h 05mDelta
Sat 5/186:00 amLEX - ONT
1 stop8h 40mDelta
Deal found 5/5$466

Ontario to Kentucky 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Kentucky in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 6, 2024.
These are some of the best deals we've found on flights to Kentucky in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Thu 6/610:00 pmONT - LEX
1 stop8h 37mDelta
Sun 6/236:26 pmLEX - ONT
1 stop7h 34mDelta
Deal found 5/5$276
Thu 6/610:00 pmONT - LEX
2 stops9h 10mDelta
Sun 6/236:26 pmLEX - ONT
1 stop7h 34mDelta
Deal found 5/5$281
Fri 5/1010:29 pmONT - LEX
1 stop8h 57mAmerican Airlines
Mon 5/138:22 pmLEX - ONT
1 stop6h 34mAmerican Airlines
Deal found 5/5$411
Fri 5/1010:29 pmONT - LEX
1 stop8h 57mAmerican Airlines
Mon 5/133:03 pmLEX - ONT
2 stops10h 26mAmerican Airlines
Deal found 5/5$415
Fri 5/109:30 amONT - LEX
2 stops10h 23mAmerican Airlines
Mon 5/131:08 pmLEX - ONT
2 stops12h 21mAmerican Airlines
Deal found 5/5$421
Fri 5/2410:00 pmONT - LEX
1 stop8h 25mDelta
Mon 5/273:44 pmLEX - ONT
1 stop7h 22mDelta
Deal found 5/5$424
Mon 6/1012:49 pmONT - SDF
1 stop6h 40mAmerican Airlines
Tue 6/185:31 pmSDF - ONT
1 stop8h 28mAmerican Airlines
Deal found 5/5$460
Tue 5/1412:50 pmONT - LEX
1 stop8h 05mDelta
Sat 5/186:00 amLEX - ONT
1 stop8h 40mDelta
Deal found 5/4$460
Tue 5/1412:50 pmONT - LEX
1 stop8h 05mDelta
Sat 5/186:00 amLEX - ONT
1 stop8h 40mDelta
Deal found 5/5$466

Ontario to Kentucky flights leaving soon

Find last-minute flight options from Ontario to Kentucky for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 6, 2024.
Have a look at some of the last-minute flights available departing from Ontario to Kentucky. To prevent any unwanted surprises, users should verify their flight info before booking.
Tue 5/1412:50 pmONT - LEX
1 stop8h 05mDelta
Sat 5/186:00 amLEX - ONT
1 stop8h 40mDelta
Deal found 5/4$460
Tue 5/1412:50 pmONT - LEX
1 stop8h 05mDelta
Sat 5/186:00 amLEX - ONT
1 stop8h 40mDelta
Deal found 5/5$466
Tue 5/145:15 amONT - LEX
1 stop6h 34mUnited Airlines
Sat 5/184:13 pmLEX - ONT
1 stop7h 40mUnited Airlines
Deal found 5/5$534
Tue 5/145:15 amONT - LEX
1 stop6h 34mUnited Airlines
Sat 5/182:03 pmLEX - ONT
2 stops12h 01mUnited Airlines
Deal found 5/5$592
Tue 5/145:20 pmONT - LEX
2 stops13h 05mDelta
Sat 5/186:00 amLEX - ONT
1 stop8h 40mDelta
Deal found 5/5$604
Wed 5/151:36 pmONT - SDF
1 stop6h 41mUnited Airlines
Tue 7/93:35 pmSDF - ONT
1 stop8h 13mUnited Airlines
Deal found 5/5$637
Wed 5/156:00 amONT - SDF
2 stops14h 17mUnited Airlines
Tue 7/93:35 pmSDF - ONT
1 stop8h 13mUnited Airlines
Deal found 5/5$677
Tue 5/145:15 amONT - LEX
2 stops9h 02mUnited Airlines
Sat 5/182:03 pmLEX - ONT
2 stops12h 01mUnited Airlines
Deal found 5/4$699
Sat 5/116:00 amONT - SDF
2 stops26h 44mUnited Airlines
Wed 5/159:04 amSDF - ONT
1 stop6h 36mUnited Airlines
Deal found 5/4$706

One-way flights to Kentucky from Ontario

Search for one-way flight options from Ontario to Kentucky. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 6, 2024.
Take a look at some of the one-way flights we've detected from Ontario to Kentucky. Those needing a return flight from Ontario to Kentucky can use the search form above.
Wed 8/147:00 amONT - LEX
1 stop7h 40mDelta
Deal found 5/5$138
Mon 6/37:39 amONT - SDF
1 stop9h 15mMultiple Airlines
Deal found 5/5$170
Wed 7/36:00 amONT - SDF
1 stop8h 59mAmerican Airlines
Deal found 5/5$204
Wed 7/39:24 amONT - SDF
2 stops10h 04mAmerican Airlines
Deal found 5/5$209
Wed 8/211:35 pmONT - SDF
1 stop6h 03mUnited Airlines
Deal found 5/3$249
Sat 8/171:30 pmONT - SDF
1 stop5h 58mUnited Airlines
Deal found 5/5$263
Sat 6/15:15 amONT - SDF
1 stop6h 11mUnited Airlines
Deal found 5/4$269
Mon 6/36:25 pmONT - SDF
1 stop24h 53mUnited Airlines
Deal found 5/4$272
Thu 6/137:05 amONT - LEX
1 stop7h 30mDelta
Deal found 5/5$275

Find flights from Ontario to Kentucky within your budget

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, Cheapflights users made 2,719,943 searches. Data last updated May 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$276 - $680

Route

Depart

Return

Price

OntarioLexington Blue Grass

ONT - LEX

ONTLEX

Ontario

Thu 6/6

1 stop8h 37m

Lexington Blue Grass

Sun 6/23

1 stop7h 34m

$276

OntarioLexington Blue Grass

ONT - LEX

ONTLEX

Ontario

Thu 6/6

2 stops9h 10m

Lexington Blue Grass

Sun 6/23

1 stop7h 34m

$281

OntarioLexington Blue Grass

ONT - LEX

ONTLEX

Ontario

Fri 5/24

1 stop8h 25m

Lexington Blue Grass

Mon 5/27

1 stop7h 22m

$424

OntarioLouisville Intl

ONT - SDF

ONTSDF

Ontario

Sat 10/5

1 stop7h 16m

Louisville Intl

Mon 10/7

1 stop6h 58m

$440

OntarioLouisville Intl

ONT - SDF

ONTSDF

Ontario

Sat 10/5

2 stops8h 05m

Louisville Intl

Mon 10/7

1 stop6h 58m

$445

OntarioLouisville Intl

ONT - SDF

ONTSDF

Ontario

Mon 6/10

1 stop6h 40m

Louisville Intl

Tue 6/18

1 stop8h 28m

$460

OntarioLouisville Intl

ONT - SDF

ONTSDF

Ontario

Thu 5/30

1 stop6h 17m

Louisville Intl

Tue 6/4

1 stop8h 20m

$498

OntarioLexington Blue Grass

ONT - LEX

ONTLEX

Ontario

Mon 9/9

2 stops13h 57m

Lexington Blue Grass

Mon 9/16

1 stop15h 02m

$539

OntarioLouisville Intl

ONT - SDF

ONTSDF

Ontario

Sat 5/18

2 stops15h 27m

Louisville Intl

Tue 5/21

2 stops14h 13m

$680

Flights are sorted by cheapest first

Deals found on 5/5

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Kentucky

Get insights into the airlines that provide service to Kentucky. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kentucky. Reviews last updated May 6, 2024.
To help decide which airline to fly from Ontario to Kentucky, see what other customers have to say about American Airlines, United Airlines and Alaska Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,134 reviews
Check prices

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,134 reviews
Alaska Airlines
8.1
Very good
9,134 reviews
Check prices

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.1
Very good
10,826 reviews
Alaska Airlines
8.1
Very good
9,134 reviews
Check prices

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
11,118 reviews
Alaska Airlines
8.1
Very good
9,134 reviews
Check prices

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines
7.3
Good
14,713 reviews
Alaska Airlines
8.1
Very good
9,134 reviews
Check prices

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Kentucky. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Kentucky?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Kentucky. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • Can I find flights from Ontario to Kentucky for under $300 on Cheapflights?

    Yes, there are multiple flights from Ontario to Kentucky for under $300. The cheapest flight booked recently is on Delta for just $276, but on average you can expect to pay $469.

  • Are there last-minute flights available from Ontario to Kentucky for under $500?

    There are currently 20+ open flights from Ontario to Kentucky within the next 7 days for less than $500.

  • What are the cheapest airlines to fly from Ontario to Kentucky one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $138. American Airlines flights start at $204 while deals on United Airlines start at $249 one-way.

  • What are the most popular routes from Ontario to Kentucky?

    The most popular flight routes from Ontario to Kentucky are Ontario - Louisville Intl, Ontario - Lexington Blue Grass and Ontario - Paducah Barkley Regional.

  • What are the most popular airlines that fly from Ontario to Kentucky?

    When booking a flight from Ontario to Kentucky, you may want to consider flying on American Airlines, Delta or Spirit Airlines as they are the most popular for this route.

  • What does ONT to SDF mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Ontario Airport to Louisville Intl Airport flight would often be abbreviated as a ONT to SDF flight. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Lexington Blue Grass Airport (LEX), Paducah Barkley Regional Airport (PAH), Owensboro Daviess County Airport (OWB).

  • Can I find deals for flights from Ontario to Kentucky that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Kentucky flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Kentucky with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Kentucky flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Ontario to Kentucky that include hotel bookings?

    Yes. In addition to deals on Ontario to Kentucky flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Kentucky?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Kentucky.

  • Can I find deals for business class flights from Ontario to Kentucky?

    Yes. Cheapflights offers flight deals from Ontario to Kentucky by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Ontario to Kentucky that allow pets onboard?

    Many airlines flying from Ontario to Kentucky offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Kentucky?

    Yes, you can often find last-minute deals on Ontario to Kentucky flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Kentucky flight deals updated?

    The Ontario to Kentucky flight deals you see on this page were last updated on 5/5.

See more FAQs

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Alternative routes for Ontario to Kentucky
See prices for flight routes from nearby airports that may be better suited for you.

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Top 4 airlines flying from Ontario to Kentucky

Discover the top 4 airlines that operate flights from Ontario to Kentucky. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$97Average$150FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
American AirlinesCheapest$242Average$520FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$280Average$466FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$368Average$491FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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Ontario to Louisiana flights

Search flights from Ontario to Kentucky by cabin class

Find flights from Ontario to Kentucky, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Kentucky?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Kentucky from Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ontario to Kentucky?

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario to Kentucky for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ontario to Kentucky with no change fees?

Yes, we can. To see specific flights from Ontario to Kentucky with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Ontario to Kentucky become cheaper?

Not ready to book yet? You can track prices for flights from Ontario to Kentucky on Cheapflights with our Price Alert feature and get notified when better prices are available.

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