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Ontario

$54+ Cheap flights from Kentucky to Ontario (ONT)

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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ONT
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Kentucky to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Kentucky (USKY) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$110
(Frontier)

One-way from

$54
(Trip.com)
From Kentucky to Ontario
Search Deals
One-way flight from Kentucky to Ontario
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Find flight deals from Kentucky to Ontario

Cheapest flights from Kentucky to Ontario
Explore the most affordable flight options available from Kentucky to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Frontier deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/26:00 pmBNA - ONT
1 stop7h 59mFrontier
Sun 4/612:59 amONT - BNA
1 stop10h 09mFrontier
Deal found 1/20$110
This Trip.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/187:59 pmCVG - ONT
1 stop22h 20mFrontier
Thu 2/279:35 pmONT - CVG
1 stop28h 39mFrontier
Deal found 1/20$130
This Expedia deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/66:00 amCVG - ONT
1 stop7h 27mMultiple Airlines
Mon 2/106:00 amONT - CVG
1 stop8h 29mMultiple Airlines
Deal found 1/20$251
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/196:36 pmTYS - ONT
1 stop6h 40mAmerican Airlines
Wed 2/266:59 amONT - TYS
1 stop7h 51mAmerican Airlines
Deal found 1/20$259
This Travelocity deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/17:00 amBNA - ONT
1 stop15h 17mMultiple Airlines
Sun 3/212:59 amONT - BNA
1 stop10h 24mMultiple Airlines
Deal found 1/20$283
This KAYAK deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/15:51 pmLEX - ONT
1 stop8h 01mDelta
Wed 3/51:10 pmONT - LEX
1 stop7h 38mDelta
Deal found 1/21$284
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/215:00 pmBNA - ONT
1 stop8h 51mDelta
Sat 2/227:05 amONT - BNA
1 stop7h 42mDelta
Deal found 1/19$289
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/256:24 amCVG - ONT
1 stop18h 58mDelta
Wed 3/265:40 amONT - CVG
1 stop10h 01mDelta
Deal found 1/19$303
This Alaska Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/116:50 pmBNA - ONT
1 stop31h 08mAlaska Airlines
Wed 2/197:00 amONT - BNA
1 stop9h 13mAlaska Airlines
Deal found 1/20$315
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/55:45 amTYS - ONT
2 stops9h 39mDelta
Wed 2/121:00 pmONT - TYS
1 stop7h 47mDelta
Deal found 1/20$319
This American Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/195:00 amBNA - ONT
2 stops9h 07mAmerican Airlines
Sun 2/2310:50 pmONT - BNA
1 stop9h 43mAmerican Airlines
Deal found 1/19$319
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/242:10 pmCVG - ONT
2 stops10h 49mUnited Airlines
Wed 2/265:05 amONT - CVG
2 stops8h 40mUnited Airlines
Deal found 1/21$343

Find flights from Kentucky to Ontario within your budget

Customize your flight search to find flights from Kentucky to Ontario 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 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Wed 4/2

6:00 pm-11:59 pm

1 stop7h 59m

Ontario

Sun 4/6

12:59 am-1:08 pm

1 stop10h 09m

$110

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 2/18

7:59 pm-3:19 pm

1 stop22h 20m

Ontario

Thu 2/27

9:35 pm-5:14 am

1 stop28h 39m

$130

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Thu 2/6

6:00 am-10:27 am

1 stop7h 27m

Ontario

Mon 2/10

6:00 am-5:29 pm

1 stop8h 29m

$251

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Wed 2/19

6:36 pm-10:16 pm

1 stop6h 40m

Ontario

Wed 2/26

6:59 am-5:50 pm

1 stop7h 51m

$259

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Sat 3/1

7:00 am-8:17 pm

1 stop15h 17m

Ontario

Sun 3/2

12:59 am-1:23 pm

1 stop10h 24m

$283

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Fri 2/21

5:00 pm-11:51 pm

1 stop8h 51m

Ontario

Tue 2/25

6:00 am-2:17 pm

1 stop6h 17m

$289

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Thu 2/20

4:04 pm-10:52 pm

1 stop9h 48m

Ontario

Thu 2/27

7:05 am-5:06 pm

1 stop7h 01m

$289

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 3/25

6:24 am-10:22 pm

1 stop18h 58m

Ontario

Wed 3/26

5:40 am-6:41 pm

1 stop10h 01m

$303

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Tue 2/11

6:50 pm-11:58 pm

1 stop31h 08m

Ontario

Wed 2/19

7:00 am-6:13 pm

1 stop9h 13m

$315

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Wed 2/19

5:00 am-12:07 pm

2 stops9h 07m

Ontario

Sun 2/23

10:50 pm-10:33 am

1 stop9h 43m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 58 results
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Best time to book a flight from Kentucky to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Kentucky with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Kentucky to Ontario

Get recent, data-driven insights about flights from Kentucky to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Kentucky to Ontario?

Currently, August is the cheapest month in which you can book a flight from Kentucky to Ontario (average of $246). Flying from Kentucky to Ontario in March is currently the most expensive (average of $310). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from KY to ONT?

Find hourly flight availability from Kentucky to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

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

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated January 21, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines and Delta from Kentucky to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,706 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
8,985 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Boarding

8.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

Find useful and relevant information for your journey from Kentucky to Ontario. 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 into for flights to Ontario from Kentucky?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Kentucky to Ontario.

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

    $54 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Alaska Airlines, with prices starting from $115 and $144, respectively.

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

    While some choose either Nashville Intl - Ontario or Knoxville McGhee Tyson - Ontario, Cincinnati Cinci./N. Kentucky - Ontario is the most popular route from Kentucky to Ontario.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Kentucky to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Kentucky to Ontario (average of $246). Flying from Kentucky to Ontario in March is currently the most expensive (average of $310). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Kentucky to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Kentucky to Ontario

Discover the top 4 airlines that operate flights from Kentucky to Ontario. 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 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$257Average$517FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$503FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$286Average$454FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$389Average$536FlexibilityNo cancel feeOn-time63%
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