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$173+ 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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SDF
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$241
(Kiwi.com)

One-way from

$173
(Delta)

Popular in

January

Cheapest in

February

Average price

$312
Provider with most accurate pricing for Toronto (YTO)-Louisville Intl flight deals.
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Provider most trusted by Cheapflights users for Toronto (YTO)-Louisville Intl flights.
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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. 11% potential increase in price ($51 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/192:55 pmYYZ - SDF
1 stop8h 03mMultiple Airlines
Wed 3/266:00 amSDF - YYZ
1 stop17h 55mMultiple Airlines
Deal found 2/19$241
This Air Canada deal was found by Cheapflights users on 2/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1610:05 amYYZ - SDF
1 stop4h 35mAir Canada
Fri 4/257:29 amSDF - YYZ
1 stop4h 20mAir Canada
Deal found 2/19$257
This CheapTicketsDeal deal was found by Cheapflights users on 2/19. 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 CheapTicketsDeal is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1612:15 pmYYZ - SDF
1 stop9h 19mWestJet
Fri 4/254:35 pmSDF - YYZ
1 stop6h 39mWestJet
Deal found 2/19$278
This Delta deal was found by Cheapflights users on 2/19. 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.
Sat 4/510:20 amYYZ - SDF
1 stop6h 59mDelta
Sat 4/127:35 amSDF - YYZ
1 stop4h 20mDelta
Deal found 2/19$291
This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/136:35 pmYUL - SDF
1 stop23h 46mMultiple Airlines
Wed 3/195:33 pmSDF - YUL
2 stops30h 17mMultiple Airlines
Deal found 2/19$298
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Sun 3/94:30 pmYYZ - SDF
1 stop8h 04mAmerican Airlines
Sat 3/227:45 amSDF - YYZ
1 stop7h 45mAmerican Airlines
Deal found 2/19$302
This Flightnetwork deal was found by Cheapflights users on 2/19. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/137:55 amYUL - SDF
1 stop15h 35mAir Canada
Wed 3/196:00 amSDF - YUL
1 stop6h 50mAir Canada
Deal found 2/19$310
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/131:15 pmYUL - SDF
1 stop10h 15mUnited Airlines
Wed 3/1910:05 amSDF - YUL
1 stop7h 45mUnited Airlines
Deal found 2/19$314
This FlightHub deal was found by Cheapflights users on 2/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/11:30 pmYUL - SDF
2 stops9h 45mWestJet
Fri 4/46:00 amSDF - YUL
1 stop10h 52mWestJet
Deal found 2/19$346
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/312:20 pmYYZ - SDF
2 stops10h 06mUnited Airlines
Sat 3/86:00 amSDF - YYZ
1 stop6h 06mUnited Airlines
Deal found 2/20$355
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 3/35:35 pmYUL - SDF
2 stops16h 49mAmerican Airlines
Thu 3/65:00 amSDF - YUL
1 stop8h 35mAmerican Airlines
Deal found 2/20$380
This Kissandfly.com deal was found by Cheapflights users on 2/20. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/312:55 pmYUL - SDF
1 stop21h 46mBritish Airways
Thu 3/65:00 amSDF - YUL
1 stop8h 35mBritish Airways
Deal found 2/20$385

Find flights from Ontario to Louisville within your budget

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 February 20, 2025.

Fly from

Ontario

Fly to

Louisville

Route

Depart

Return

Price

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Wed 3/19

2:55 pm-10:58 pm

1 stop8h 03m

Louisville Intl

Wed 3/26

6:00 am-11:55 pm

1 stop17h 55m

$241

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Wed 4/16

10:05 am-2:40 pm

1 stop4h 35m

Louisville Intl

Fri 4/25

7:29 am-11:49 am

1 stop4h 20m

$257

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Wed 4/16

12:15 pm-9:34 pm

1 stop9h 19m

Louisville Intl

Fri 4/25

4:35 pm-11:14 pm

1 stop6h 39m

$278

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sat 4/5

10:20 am-5:19 pm

1 stop6h 59m

Louisville Intl

Sat 4/12

7:35 am-11:55 am

1 stop4h 20m

$291

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Thu 3/13

6:35 pm-6:21 pm

1 stop23h 46m

Louisville Intl

Wed 3/19

5:33 pm-11:50 pm

2 stops30h 17m

$298

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sun 3/9

4:30 pm-12:34 am

1 stop8h 04m

Louisville Intl

Sat 3/22

7:45 am-3:30 pm

1 stop7h 45m

$302

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Thu 3/13

7:55 am-11:30 pm

1 stop15h 35m

Louisville Intl

Wed 3/19

6:00 am-12:50 pm

1 stop6h 50m

$310

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Thu 3/13

1:15 pm-11:30 pm

1 stop10h 15m

Louisville Intl

Wed 3/19

10:05 am-5:50 pm

1 stop7h 45m

$314

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Tue 4/1

1:30 pm-11:15 pm

2 stops9h 45m

Louisville Intl

Fri 4/4

6:00 am-4:52 pm

1 stop10h 52m

$346

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Mon 3/3

12:20 pm-10:26 pm

2 stops10h 06m

Louisville Intl

Sat 3/8

6:00 am-12:06 pm

1 stop6h 06m

$355

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 17 results
1
2

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.

Travel insights for flights from Ontario to Louisville

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

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 February 20, 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.

Rainfall in Louisville by month

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

In terms of precipitation, rainfall in Louisville ranges from 3.1 - 5.3 inches per month. May is typically the wettest month, when rainfall can reach 5.3 in. September is typically the driest time to visit Louisville when rainfall is around 3.1 in.

Temperature in Louisville by month

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

If weather is an important factor for your trip to Louisville, use this chart to help with planning. For those seeking warmer temperatures, July 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 January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. 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 Louisville. Reviews last updated February 20, 2025.
To help decide which airline to fly from Ontario to Louisville, see what other customers have to say about Delta, United Airlines and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,765 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

WestJet
7.2
Good
2,801 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Canada
7.0
Good
8,748 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines to fly from Region of Ontario to Louisville one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $173. Users have also found prices from $175 and $243 on United Airlines and WestJet, respectively.

  • 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 Ontario?

Book flights to Ontario if you plan to visit one of these locations
Jeffersonville
Corydon
Elizabethtown
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 2 airlines flying from Ontario to Louisville

Discover the top 2 airlines 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$263Average$327FlexibilityNo cancel feeOn-time71%
WestJetCheapest$296Average$379FlexibilityNo cancel feeOn-time60%
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