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Cheap flights from Ontario to Louisville from C$ 209

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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SDF
29 Apr — 6 May1
1 adult

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 24 April 2025.

Round-trip from

C$ 341

One-way from

C$ 209

Popular in

January

Cheapest in

February

Average price

C$ 487
American Airlines
  • American Airlines
  • 8/5-11/5
  • 2 total stops
  • 17h 17m total
  • Ontario to Louisville
Search Deals
American Airlines
  • American Airlines
  • 7/5
  • 1 total stop
  • 12h 39m total
  • Ontario to Louisville
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 97 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 24 April 2025.

Thu 8/53:45 p.m.YYZ - SDF
1 stop8h 33mAmerican Airlines
Sun 11/56:15 a.m.SDF - YYZ
1 stop8h 44mAmerican Airlines
Deal found 24/4C$ 341
Thu 8/53:50 p.m.YYZ - SDF
1 stop5h 36mDelta
Sun 11/56:19 a.m.SDF - YYZ
1 stop5h 21mDelta
Deal found 23/4C$ 349
Sat 7/67:29 a.m.YUL - SDF
1 stop14h 48mAmerican Airlines
Sat 14/66:12 a.m.SDF - YUL
1 stop16h 32mAmerican Airlines
Deal found 23/4C$ 368
Sat 7/612:05 p.m.YYZ - SDF
2 stops10h 09mUnited Airlines
Sat 14/66:00 p.m.SDF - YYZ
1 stop5h 58mUnited Airlines
Deal found 23/4C$ 407
Wed 18/67:00 a.m.YUL - SDF
1 stop4h 48mDelta
Sat 21/63:20 p.m.SDF - YUL
1 stop8h 34mDelta
Deal found 23/4C$ 409
Thu 8/55:30 p.m.YYZ - SDF
1 stop5h 00mAir Canada
Wed 14/56:00 a.m.SDF - YYZ
2 stops9h 00mAir Canada
Deal found 23/4C$ 411
Sun 11/58:00 p.m.YYZ - SDF
2 stops15h 02mMultiple Airlines
Thu 15/511:23 a.m.SDF - YYZ
1 stop11h 21mMultiple Airlines
Deal found 23/4C$ 518
Sat 7/62:50 p.m.YUL - SDF
1 stop20h 58mWestJet
Sat 14/68:06 a.m.SDF - YUL
2 stops16h 31mWestJet
Deal found 23/4C$ 536
Sat 7/68:15 a.m.YUL - SDF
3 stops26h 03mMultiple Airlines
Sat 14/65:03 a.m.SDF - YUL
2 stops19h 34mMultiple Airlines
Deal found 23/4C$ 557
Thu 29/56:40 a.m.YOW - SDF
1 stop15h 34mUnited Airlines
Sat 31/57:00 a.m.SDF - YOW
1 stop14h 35mUnited Airlines
Deal found 23/4C$ 661
Sun 15/66:15 a.m.YYZ - SDF
1 stop5h 33mWestJet
Sun 15/63:24 p.m.SDF - YYZ
1 stop6h 35mWestJet
Deal found 23/4C$ 704
Thu 29/59:05 a.m.YOW - SDF
2 stops10h 41mAir Canada
Sat 31/58:55 a.m.SDF - YOW
1 stop5h 09mAir Canada
Deal found 22/4C$ 820

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 629,999 searches. Data last updated 24 April 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

Thu 8/5

3:45 p.m.-12:18 a.m.

1 stop8h 33m

Louisville Intl

Sun 11/5

6:15 a.m.-2:59 p.m.

1 stop8h 44m

C$ 341

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 8/5

3:50 p.m.-9:26 p.m.

1 stop5h 36m

Louisville Intl

Sun 11/5

6:19 a.m.-11:40 a.m.

1 stop5h 21m

C$ 349

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Sat 7/6

7:29 a.m.-10:17 p.m.

1 stop14h 48m

Louisville Intl

Sat 14/6

6:12 a.m.-10:44 p.m.

1 stop16h 32m

C$ 368

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sat 7/6

12:05 p.m.-10:14 p.m.

2 stops10h 09m

Louisville Intl

Sat 14/6

6:00 p.m.-11:58 p.m.

1 stop5h 58m

C$ 407

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Wed 18/6

7:00 a.m.-11:48 a.m.

1 stop4h 48m

Louisville Intl

Sat 21/6

3:20 p.m.-11:54 p.m.

1 stop8h 34m

C$ 409

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 8/5

5:30 p.m.-10:30 p.m.

1 stop5h 00m

Louisville Intl

Wed 14/5

6:00 a.m.-3:00 p.m.

2 stops9h 00m

C$ 411

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sun 11/5

8:00 p.m.-11:02 a.m.

2 stops15h 02m

Louisville Intl

Thu 15/5

11:23 a.m.-10:44 p.m.

1 stop11h 21m

C$ 518

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Sat 7/6

2:50 p.m.-11:48 a.m.

1 stop20h 58m

Louisville Intl

Sat 14/6

8:06 a.m.-12:37 a.m.

2 stops16h 31m

C$ 536

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Sat 7/6

8:15 a.m.-10:18 a.m.

3 stops26h 03m

Louisville Intl

Sat 14/6

5:03 a.m.-12:37 a.m.

2 stops19h 34m

C$ 557

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Thu 29/5

6:40 a.m.-10:14 p.m.

1 stop15h 34m

Louisville Intl

Sat 31/5

7:00 a.m.-9:35 p.m.

1 stop14h 35m

C$ 661

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/4

Showing 1-10 of 22 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, February is the cheapest month in which you can book a flight from Region of Ontario to Louisville (average of C$ 332). Flying from Region of Ontario to Louisville in September is currently the most expensive (average of C$ 487). 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 24 April 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 79.0 - 135.0 mm per month. May is typically the wettest month, when rainfall can reach 135.0 mm. September is typically the driest time to visit Louisville when rainfall is around 79.0 mm.

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 26.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 24 April 2025.
Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Ontario to Louisville. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews
Check prices

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

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
7,920 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

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
8,685 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

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
7,920 reviews
Check prices

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

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
2,816 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

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
9,197 reviews
Delta
8.0
Very good
7,920 reviews
Check prices

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

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?

    Located just 8.5 km from the city centre, Louisville Intl (SDF) is the airport most travelers will use when flying to Louisville from Ontario.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as C$ 209. Users have also found prices from C$ 215 and C$ 249 on United Airlines and Air Canada, respectively.

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

    The most popular route from Region of Ontario to Louisville is Toronto Pearson Intl - Louisville Intl. You may also consider Ottawa - Louisville Intl or Montreal Pierre Elliott Trudeau Intl - Louisville Intl.

  • 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, February is the cheapest month in which you can book a flight from Region of Ontario to Louisville (average of C$ 332). Flying from Region of Ontario to Louisville in September is currently the most expensive (average of C$ 487). 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 Ontario to Louisville

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to Louisville

Discover the top 5 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 629,999 searches. Data last updated 24 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 193AverageC$ 721FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 199AverageC$ 399FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 349AverageC$ 421FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 361AverageC$ 716FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 408AverageC$ 501FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Ontario to Louisville?

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Louisville flexibly with Cheapflights today.

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