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$168+ 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 2/13. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SDF
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Ontario to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (CAON) to Louisville (SDF). 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

$275
(Air Canada)

One-way from

$168
(United Airlines)
From Ontario to Louisville Intl
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One-way flight from Ontario to Louisville Intl
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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 January 21, 2025.

This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/155:30 pmYYZ - SDF
1 stop4h 56mAir Canada
Tue 2/1810:05 amSDF - YYZ
1 stop5h 40mAir Canada
Deal found 1/21$275
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/167:45 amYYZ - SDF
1 stop5h 32mUnited Airlines
Fri 2/2110:05 amSDF - YYZ
1 stop6h 41mUnited Airlines
Deal found 1/20$279
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/37:05 amYYZ - SDF
1 stop13h 20mMultiple Airlines
Mon 3/107:03 pmSDF - YYZ
2 stops24h 27mMultiple Airlines
Deal found 1/20$293
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.
Fri 2/1411:08 amYUL - SDF
1 stop7h 49mUnited Airlines
Mon 2/1710:05 amSDF - YUL
1 stop8h 42mUnited Airlines
Deal found 1/21$299
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.
Tue 4/17:05 amYUL - SDF
1 stop4h 17mDelta
Fri 4/47:08 amSDF - YUL
1 stop9h 44mDelta
Deal found 1/20$308
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/46:30 amYYZ - SDF
1 stop16h 41mWestJet
Fri 4/1111:09 amSDF - YYZ
1 stop8h 57mWestJet
Deal found 1/21$330
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/176:10 amYUL - SDF
1 stop6h 48mWestJet
Mon 4/216:26 pmSDF - YUL
1 stop21h 36mWestJet
Deal found 1/19$331
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 7/23:59 pmYYZ - SDF
1 stop5h 37mDelta
Mon 7/216:26 pmSDF - YYZ
1 stop4h 29mDelta
Deal found 1/20$520
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/15:35 pmYUL - SDF
2 stops7h 03mAmerican Airlines
Thu 3/65:33 amSDF - YUL
2 stops11h 17mAmerican Airlines
Deal found 1/21$630

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sat 2/15

6:15 am-2:38 pm

1 stop8h 23m

Louisville Intl

Tue 2/18

10:05 am-4:46 pm

1 stop6h 41m

$275

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sat 2/15

12:20 pm-10:26 pm

2 stops10h 06m

Louisville Intl

Tue 2/18

2:10 pm-9:17 pm

1 stop7h 07m

$282

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Fri 2/14

11:08 am-6:57 pm

1 stop7h 49m

Louisville Intl

Mon 2/17

10:05 am-6:47 pm

1 stop8h 42m

$299

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Tue 4/1

7:05 am-11:22 am

1 stop4h 17m

Louisville Intl

Fri 4/4

7:08 am-4:52 pm

1 stop9h 44m

$308

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 5/8

11:30 am-8:19 pm

1 stop8h 49m

Louisville Intl

Sun 5/11

1:18 pm-11:53 pm

1 stop10h 35m

$324

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Fri 4/4

6:30 am-11:11 pm

1 stop16h 41m

Louisville Intl

Fri 4/11

11:09 am-8:06 pm

1 stop8h 57m

$330

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Thu 4/17

6:10 am-12:58 pm

1 stop6h 48m

Louisville Intl

Mon 4/21

6:26 pm-4:02 pm

1 stop21h 36m

$331

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 5/8

6:12 pm-10:32 pm

1 stop4h 20m

Louisville Intl

Sun 5/11

6:00 am-10:29 am

1 stop4h 29m

$538

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Sat 3/1

5:35 pm-12:38 am

2 stops7h 03m

Louisville Intl

Thu 3/6

5:33 am-4:50 pm

2 stops11h 17m

$630

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 2/13

12:45 pm-6:57 pm

1 stop6h 12m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 18 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.

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 January 21, 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 January 21, 2025.
To help decide which airline to fly from Ontario to Louisville, see what other customers have to say about United Airlines, WestJet and Delta. 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
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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

United Airlines
7.4
Good
8,985 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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

WestJet
7.2
Good
2,829 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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

Air Canada
7.0
Good
8,635 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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 United Airlines. According to our data, you can fly for as low as $168. Users have also found prices from $170 and $192 on Delta 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$263Average$327FlexibilityNo cancel feeOn-time71%
WestJetCheapest$296Average$402FlexibilityNo cancel feeOn-time60%
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