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Cheap flights from Ontario to Louisville from C$ 240

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SDF
8 Apr — 15 Apr1
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 3 April 2025.

Round-trip from

C$ 401

One-way from

C$ 240

Popular in

January

Cheapest in

February

Average price

C$ 469
25/4-28/4
  • 25/4-28/4
  • 3 total stops
  • 27h 27m total
  • Ontario to Louisville
Search Deals
3/5
  • 3/5
  • 2 total stops
  • 15h 32m total
  • Ontario to Louisville
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 84 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
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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 3 April 2025.

Fri 25/46:45 a.m.YYZ - SDF
1 stop11h 46mMultiple Airlines
Mon 28/45:45 a.m.SDF - YYZ
2 stops15h 41mMultiple Airlines
Deal found 2/4C$ 401
Thu 8/53:45 p.m.YYZ - SDF
1 stop8h 33mAmerican Airlines
Sun 11/56:15 a.m.SDF - YYZ
1 stop4h 50mAmerican Airlines
Deal found 3/4C$ 408
Sat 31/512:00 p.m.YYZ - SDF
1 stop8h 26mUnited Airlines
Wed 4/66:00 a.m.SDF - YYZ
1 stop9h 59mUnited Airlines
Deal found 2/4C$ 413
Thu 8/511:30 a.m.YYZ - SDF
1 stop9h 06mDelta
Sun 11/52:38 p.m.SDF - YYZ
1 stop8h 20mDelta
Deal found 2/4C$ 415
Fri 18/44:50 p.m.YUL - SDF
1 stop4h 44mDelta
Sun 27/47:43 a.m.SDF - YUL
1 stop8h 17mDelta
Deal found 2/4C$ 445
Thu 12/66:25 p.m.YYZ - SDF
1 stop15h 15mWestJet
Mon 16/67:14 p.m.SDF - YYZ
1 stop22h 01mWestJet
Deal found 2/4C$ 486
Wed 24/97:00 a.m.YUL - SDF
1 stop6h 49mWestJet
Mon 29/92:59 p.m.SDF - YUL
1 stop8h 54mWestJet
Deal found 1/4C$ 722
Fri 18/410:15 a.m.YUL - SDF
2 stops10h 14mAir Canada
Sun 27/47:29 a.m.SDF - YUL
1 stop9h 57mAir Canada
Deal found 2/4C$ 828
Wed 30/45:55 a.m.YOW - SDF
2 stops15h 50mWestJet
Sun 4/59:32 a.m.SDF - YOW
2 stops14h 50mWestJet
Deal found 2/4C$ 1,028
Wed 30/45:25 p.m.YOW - SDF
1 stop5h 05mUnited Airlines
Sun 4/56:00 a.m.SDF - YOW
1 stop3h 58mUnited Airlines
Deal found 2/4C$ 1,159

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 3 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

Fri 25/4

6:45 a.m.-6:31 p.m.

1 stop11h 46m

Louisville Intl

Mon 28/4

5:45 a.m.-9:26 p.m.

2 stops15h 41m

C$ 401

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.-11:05 a.m.

1 stop4h 50m

C$ 408

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sat 31/5

12:00 p.m.-8:26 p.m.

1 stop8h 26m

Louisville Intl

Wed 4/6

6:00 a.m.-3:59 p.m.

1 stop9h 59m

C$ 413

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 8/5

11:30 a.m.-8:36 p.m.

1 stop9h 06m

Louisville Intl

Sun 11/5

2:38 p.m.-10:58 p.m.

1 stop8h 20m

C$ 415

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Fri 18/4

4:50 p.m.-9:34 p.m.

1 stop4h 44m

Louisville Intl

Sun 27/4

7:43 a.m.-4:00 p.m.

1 stop8h 17m

C$ 445

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 12/6

6:25 p.m.-9:40 a.m.

1 stop15h 15m

Louisville Intl

Mon 16/6

7:14 p.m.-5:15 p.m.

1 stop22h 01m

C$ 486

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Wed 24/9

7:00 a.m.-1:49 p.m.

1 stop6h 49m

Louisville Intl

Mon 29/9

2:59 p.m.-11:53 p.m.

1 stop8h 54m

C$ 722

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Fri 18/4

10:15 a.m.-8:29 p.m.

2 stops10h 14m

Louisville Intl

Sun 27/4

7:29 a.m.-5:26 p.m.

1 stop9h 57m

C$ 828

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 30/4

5:55 a.m.-9:45 p.m.

2 stops15h 50m

Louisville Intl

Sun 4/5

9:32 a.m.-12:22 a.m.

2 stops14h 50m

C$ 1,028

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 30/4

5:25 p.m.-10:30 p.m.

1 stop5h 05m

Louisville Intl

Sun 4/5

6:00 a.m.-9:58 a.m.

1 stop3h 58m

C$ 1,159

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 17 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 3 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 3 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
7,897 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

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
7,897 reviews
Delta
8.0
Very good
7,897 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

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
8,619 reviews
Delta
8.0
Very good
7,897 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

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
7,897 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

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
2,795 reviews
Delta
8.0
Very good
7,897 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

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
9,029 reviews
Delta
8.0
Very good
7,897 reviews
Check prices

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

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 Delta. According to our data, you can fly for as low as C$ 246. Users have also found prices from C$ 252 and C$ 302 on American Airlines and United Airlines, 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 Montreal Pierre Elliott Trudeau Intl - Louisville Intl or Ottawa - 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 3 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 199AverageC$ 741FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 206AverageC$ 422FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 360AverageC$ 470FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 372AverageC$ 731FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 421AverageC$ 517FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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

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