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$151+ Cheap flights from Ontario to Louisville (SDF)

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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SDF
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Ontario to Louisville

Keep the following information in mind while searching for Ontario to Louisville flight deals. Data was last updated September 11, 2025.

Round-trip from

$238
(Mytrip)

One-way from

$151
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$394
From Ontario to Louisville Intl
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One-way flight from Ontario to Louisville Intl
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Highest demand for flights based on searches. 6% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Louisville

Cheapest flights from Ontario to Louisville
Explore the most affordable flight options available from Ontario to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:30 amYYZ - SDF
1 stop11h 33mMultiple Airlines
Sat 11/17:15 amSDF - YYZ
1 stop7h 05mMultiple Airlines
Deal found 9/10$238
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/244:00 pmYYZ - SDF
1 stop6h 47mMultiple Airlines
Fri 10/317:15 amSDF - YYZ
1 stop6h 50mMultiple Airlines
Deal found 9/9$256
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:30 amYYZ - SDF
1 stop11h 33mMultiple Airlines
Wed 10/295:31 pmSDF - YYZ
1 stop21h 09mMultiple Airlines
Deal found 9/9$259
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/74:00 pmYYZ - SDF
1 stop25h 55mMultiple Airlines
Tue 10/1410:01 amSDF - YYZ
1 stop12h 39mMultiple Airlines
Deal found 9/9$273
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/269:35 amYYZ - SDF
1 stop23h 56mMultiple Airlines
Sun 11/26:58 pmSDF - YYZ
1 stop24h 04mMultiple Airlines
Deal found 9/11$279
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/249:50 amYYZ - SDF
1 stop12h 57mMultiple Airlines
Sat 11/17:15 amSDF - YYZ
1 stop7h 05mMultiple Airlines
Deal found 9/9$294
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/64:00 pmYYZ - SDF
1 stop28h 50mMultiple Airlines
Tue 10/1410:01 amSDF - YYZ
1 stop12h 39mMultiple Airlines
Deal found 9/9$295
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/2512:30 pmYUL - SDF
1 stop10h 33mAmerican Airlines
Sat 11/16:45 amSDF - YUL
1 stop9h 54mAmerican Airlines
Deal found 9/10$358
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:45 amYUL - SDF
2 stops17h 00mMultiple Airlines
Mon 11/249:23 amSDF - YUL
1 stop29h 47mMultiple Airlines
Deal found 9/11$373
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/257:20 pmYUL - SDF
2 stops39h 32mMultiple Airlines
Sat 11/16:58 pmSDF - YUL
1 stop22h 30mMultiple Airlines
Deal found 9/10$386
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:45 amYUL - SDF
2 stops17h 00mMultiple Airlines
Sat 11/296:00 amSDF - YUL
1 stop18h 30mMultiple Airlines
Deal found 9/10$433
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:45 amYUL - SDF
1 stop26h 03mMultiple Airlines
Thu 11/2711:31 amSDF - YUL
2 stops37h 12mMultiple Airlines
Deal found 9/11$442

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Louisville 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 September 11, 2025.
Use the filters below to find and compare flights from Ontario to Louisville that are best for you.

Fly from

Ontario

Fly to

Louisville

Route

Depart

Return

Price

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sat 10/25

6:30 am-6:03 pm

1 stop11h 33m

Louisville Intl

Sat 11/1

7:15 am-2:20 pm

1 stop7h 05m

$238

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Fri 10/24

4:00 pm-10:47 pm

1 stop6h 47m

Louisville Intl

Fri 10/31

7:15 am-2:05 pm

1 stop6h 50m

$256

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sat 10/25

6:30 am-6:03 pm

1 stop11h 33m

Louisville Intl

Wed 10/29

5:31 pm-2:40 pm

1 stop21h 09m

$259

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Tue 10/7

4:00 pm-5:55 pm

1 stop25h 55m

Louisville Intl

Tue 10/14

10:01 am-10:40 pm

1 stop12h 39m

$273

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sun 10/26

9:35 am-9:31 am

1 stop23h 56m

Louisville Intl

Sun 11/2

6:58 pm-7:02 pm

1 stop24h 04m

$279

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 11/27

7:35 am-7:25 pm

1 stop11h 50m

Louisville Intl

Tue 12/2

6:00 am-2:05 pm

1 stop8h 05m

$289

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Fri 10/24

9:50 am-10:47 pm

1 stop12h 57m

Louisville Intl

Sat 11/1

7:15 am-2:20 pm

1 stop7h 05m

$294

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Mon 10/20

6:30 am-5:53 pm

1 stop11h 23m

Louisville Intl

Wed 10/22

5:31 pm-2:05 pm

1 stop20h 34m

$325

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sat 9/27

6:30 am-10:04 pm

1 stop15h 34m

Louisville Intl

Tue 9/30

10:14 am-11:41 pm

1 stop13h 27m

$330

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Fri 11/21

6:45 am-11:45 pm

2 stops17h 00m

Louisville Intl

Mon 11/24

9:23 am-3:10 pm

1 stop29h 47m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 36 results
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Best time to book a flight from Ontario to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Ontario 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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Louisville

What is the cheapest month to book a flight from Region of Ontario to Louisville?

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Louisville (average of $299). Flying from Region of Ontario to Louisville in April is currently the most expensive (average of $369). 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 ON to SDF?

Find hourly flight availability from Ontario to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

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

Related info for your journey

Find useful and relevant information for your journey from Ontario to Louisville. 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 Louisville from Ontario?

    Louisville Intl (SDF), located 5.3 mi from the city center, is the airport you fly into when you book flights from Ontario to Louisville.

  • How long is the flight from Region of Ontario to Louisville?

    A quick flight from Region of Ontario to Louisville can take about 7h 17m. United Airlines provides one of the quickest options available for as low as $585. There are 715 mi between Region of Ontario and Louisville.

  • What are the most popular routes from Region of Ontario to Louisville?

    When deciding which route to take from Region of Ontario to Louisville consider Toronto Pearson Intl - Louisville Intl, Montreal Pierre Elliott Trudeau Intl - Louisville Intl or Ottawa - Louisville Intl as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Louisville 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 Region of Ontario to Louisville?

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Louisville (average of $299). Flying from Region of Ontario to Louisville in April is currently the most expensive (average of $369). 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

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Alternative routes for Ontario to Louisville

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Ontario to Louisville

Discover the top airline that operate flights from Ontario to Louisville. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$296Average$428FlexibilityNo cancel feeOn-time60%

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