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$70+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ONT
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
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 December 18, 2024.

Round-trip from

$138
(CheapOair)

One-way from

$71
(Mytrip)
From Kentucky to Ontario
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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 December 18, 2024.

This FlightHub deal was found by Cheapflights users on 12/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/229:30 pmCVG - ONT
1 stop12h 39mFrontier
Thu 12/2610:31 pmONT - CVG
1 stop11h 13mFrontier
Deal found 12/17$207
This Priceline deal was found by Cheapflights users on 12/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/255:12 pmBNA - ONT
1 stop8h 47mFrontier
Tue 12/3112:59 amONT - BNA
1 stop9h 31mFrontier
Deal found 12/17$424
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/255:24 amTYS - ONT
1 stop9h 22mAmerican Airlines
Sun 12/297:30 pmONT - TYS
2 stops10h 10mAmerican Airlines
Deal found 12/17$458
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/296:29 amBNA - ONT
1 stop7h 17mAmerican Airlines
Fri 1/107:00 amONT - BNA
1 stop7h 20mAmerican Airlines
Deal found 12/17$506
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/258:00 amBNA - ONT
1 stop6h 40mUnited Airlines
Fri 2/75:10 amONT - BNA
1 stop6h 18mUnited Airlines
Deal found 12/17$521
This Southwest deal was found by Cheapflights users on 12/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:45 amSDF - ONT
1 stop7h 50mSouthwest
Tue 12/3111:45 amONT - SDF
1 stop7h 40mSouthwest
Deal found 12/17$528
This Delta deal was found by Cheapflights users on 12/18. 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.
Sat 12/216:48 pmTRI - ONT
1 stop7h 53mDelta
Tue 1/77:05 amONT - TRI
1 stop8h 16mDelta
Deal found 12/18$533
This Booking.com deal was found by Cheapflights users on 12/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/297:43 pmTYS - ONT
1 stop18h 17mFrontier
Wed 1/112:59 amONT - TYS
1 stop14h 54mFrontier
Deal found 12/17$543
This Southwest deal was found by Cheapflights users on 12/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/312:50 pmBNA - ONT
1 stop9h 20mSouthwest
Wed 1/11:35 pmONT - BNA
1 stop5h 50mSouthwest
Deal found 12/16$550
This Delta deal was found by Cheapflights users on 12/17. 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 12/187:20 amBNA - ONT
1 stop7h 05mDelta
Wed 12/255:30 amONT - BNA
1 stop6h 17mDelta
Deal found 12/17$553
This United deal was found by Cheapflights users on 12/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/188:55 amTYS - ONT
1 stop6h 45mUnited Airlines
Fri 1/36:10 amONT - TYS
1 stop8h 55mUnited Airlines
Deal found 12/17$578
This Delta deal was found by Cheapflights users on 12/17. 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 12/185:20 amTYS - ONT
1 stop8h 41mDelta
Tue 12/2412:55 pmONT - TYS
1 stop8h 00mDelta
Deal found 12/17$608

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

CincinnatiOntario

CVG - ONT

CVGONT

Cincinnati Cinci./N. Kentucky

Tue 3/4

8:20 am-6:58 pm

1 stop13h 38m

Ontario

Thu 3/6

2:43 pm-5:14 am

1 stop11h 31m

$138

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Fri 2/21

6:01 pm-12:09 am

1 stop8h 08m

Ontario

Tue 3/11

12:59 am-1:18 pm

1 stop10h 19m

$172

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Thu 1/9

7:00 am-3:11 pm

1 stop10h 11m

Ontario

Thu 1/23

11:33 am-11:59 pm

1 stop10h 26m

$194

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Wed 1/29

5:00 pm-11:53 pm

1 stop8h 53m

Ontario

Fri 2/7

6:00 am-2:17 pm

1 stop6h 17m

$256

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Thu 1/9

4:19 pm-11:44 pm

1 stop10h 25m

Ontario

Wed 1/15

7:45 am-3:19 pm

1 stop28h 34m

$268

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Tue 3/18

6:11 pm-11:54 pm

1 stop8h 43m

Ontario

Wed 4/2

3:08 pm-11:41 pm

1 stop5h 33m

$288

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 1/14

3:59 pm-10:52 pm

1 stop9h 53m

Ontario

Fri 1/24

7:05 am-5:06 pm

1 stop7h 01m

$288

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Fri 1/24

2:34 pm-10:45 pm

2 stops10h 11m

Ontario

Sun 1/26

11:59 pm-10:45 am

1 stop8h 46m

$293

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Tue 3/18

1:00 pm-11:55 pm

2 stops13h 55m

Ontario

Wed 4/2

12:39 pm-11:45 pm

1 stop8h 06m

$293

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 1/14

9:00 am-6:04 pm

2 stops12h 04m

Ontario

Sat 1/25

5:10 am-5:24 pm

2 stops9h 14m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 53 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, September is the cheapest month in which you can book a flight from Kentucky to Ontario (average of $236). Flying from Kentucky to Ontario in December is currently the most expensive (average of $298). 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 December 18, 2024.

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 December 18, 2024.
Peruse reviews from past customers who have flown with American Airlines, Delta and Alaska Airlines 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
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

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

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

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

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

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

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

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

United Airlines
7.4
Good
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

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
4,848 reviews

Crew

8.7

Food

7.2

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

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?

    $71 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Alaska Airlines and Delta, with prices starting from $128 and $133, respectively.

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

    While some choose either Cincinnati Cinci./N. Kentucky - Ontario or Louisville Intl - Ontario, Nashville Intl - 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, September is the cheapest month in which you can book a flight from Kentucky to Ontario (average of $236). Flying from Kentucky to Ontario in December is currently the most expensive (average of $298). 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$257Average$525FlexibilityNo cancel feeOn-time69%
DeltaCheapest$275Average$498FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$286Average$454FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$389Average$536FlexibilityNo cancel feeOn-time63%
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