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

United Airlines and WestJet can get you from Region of Ontario to Louisville in just under 8h. Your travel time can differ by up to 28h 10m. The distance from Region of Ontario to Louisville is about 798 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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.

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).

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.

What are the most popular airlines that fly from Region of Ontario to Louisville?

United Airlines, American Airlines and WestJet are the most popular airlines when flying from Region of Ontario to Louisville.

What is the cheapest time of day to fly from ON to SDF?

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.

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.

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.

C$ 324+ Cheap Flights from Ontario to Louisville

Cheap flight deals from Ontario to Louisville

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 12 November 2026.

Tue 15/1212:20 p.m. -

2 stops28h 12m

Thu 24/129:09 p.m. -

1 stop26h 28m

Deal found 11/11C$ 596

Tue 15/1212:20 p.m. -

2 stops28h 12m

Wed 23/1210:27 a.m. -

1 stop13h 10m

Deal found 11/11C$ 642

Tue 24/115:55 p.m. -

1 stop4h 35m

Wed 25/119:02 a.m. -

1 stop5h 01m

Deal found 10/11C$ 650

Sat 26/1210:00 a.m. -

1 stop4h 52m

Fri 1/17:00 a.m. -

1 stop7h 03m

Deal found 11/11C$ 651

Tue 15/123:35 p.m. -

1 stop8h 14m

Thu 24/121:16 p.m. -

1 stop8h 08m

Deal found 11/11C$ 656

Tue 24/117:35 a.m. -

1 stop9h 19m

Tue 1/127:41 a.m. -

1 stop5h 54m

Deal found 10/11C$ 657

Sun 22/116:30 a.m. -

1 stop10h 57m

Wed 25/119:10 p.m. -

1 stop22h 07m

Deal found 10/11C$ 711

Fri 4/125:25 p.m. -

1 stop6h 43m

Sun 6/127:41 a.m. -

1 stop5h 54m

Deal found 8/11C$ 730

Mon 21/125:55 p.m. -

1 stop4h 44m

Sat 26/128:45 a.m. -

1 stop12h 30m

Deal found 10/11C$ 733

Sat 26/123:25 p.m. -

1 stop6h 17m

Sun 3/16:13 a.m. -

1 stop4h 46m

Deal found 11/11C$ 735

Mon 23/117:35 a.m. -

1 stop10h 29m

Wed 25/119:10 p.m. -

1 stop22h 07m

Deal found 10/11C$ 741

Tue 15/125:30 a.m. -

2 stops11h 46m

Wed 6/16:15 p.m. -

2 stops29h 25m

Deal found 12/11C$ 745

Best flights from Ontario to Louisville
Discover carefully curated flight deals from Ontario to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 November 2026.

Wed 6/18:35 a.m. -

1 stop8h 00m

Thu 7/19:50 a.m. -

1 stop4h 35m

Deal found 11/11C$ 651

Tue 24/117:35 a.m. -

1 stop9h 19m

Tue 1/127:41 a.m. -

1 stop5h 54m

Deal found 7/11C$ 693

Sat 26/126:45 a.m. -

1 stop6h 33m

Sat 2/18:45 a.m. -

1 stop10h 25m

Deal found 11/11C$ 757

Fri 12/35:30 a.m. -

2 stops36h 10m

Thu 18/37:20 a.m. -

2 stops16h 20m

Deal found 9/11C$ 822

Sun 27/128:35 a.m. -

1 stop14h 04m

Fri 1/17:00 a.m. -

1 stop7h 03m

Deal found 11/11C$ 651

Tue 19/16:45 a.m. -

1 stop6h 41m

Thu 21/110:20 a.m. -

1 stop6h 27m

Deal found 8/11C$ 656

Sun 17/17:50 a.m. -

1 stop8h 27m

Fri 22/16:40 a.m. -

1 stop6h 44m

Deal found 8/11C$ 730

Fri 4/126:40 p.m. -

1 stop5h 19m

Sun 6/127:10 a.m. -

1 stop14h 05m

Deal found 8/11C$ 656

Fri 4/125:25 p.m. -

1 stop6h 43m

Sun 6/127:41 a.m. -

1 stop5h 54m

Deal found 8/11C$ 730

Thu 24/126:45 a.m. -

1 stop12h 02m

Thu 31/129:50 a.m. -

1 stop4h 35m

Deal found 8/11C$ 656

Tue 15/128:35 a.m. -

1 stop8h 04m

Wed 23/121:38 p.m. -

1 stop6h 21m

Deal found 11/11C$ 656

Tue 15/123:35 p.m. -

1 stop8h 14m

Thu 24/121:16 p.m. -

1 stop8h 08m

Deal found 11/11C$ 656

Sat 19/126:40 p.m. -

1 stop5h 18m

Thu 31/122:00 p.m. -

1 stop7h 15m

Deal found 10/11C$ 657

Tue 5/14:36 p.m. -

1 stop7h 39m

Thu 7/11:41 p.m. -

1 stop8h 15m

Deal found 7/11C$ 963

Tue 15/126:00 a.m. -

1 stop7h 23m

Wed 6/16:15 a.m. -

1 stop15h 41m

Deal found 12/11C$ 964

Wed 16/122:00 p.m. -

1 stop5h 35m

Wed 6/18:50 a.m. -

1 stop12h 33m

Deal found 12/11C$ 964

Sat 26/122:00 p.m. -

1 stop5h 20m

Sat 2/19:50 a.m. -

1 stop9h 37m

Deal found 11/11C$ 970

Mon 7/123:10 p.m. -

1 stop8h 49m

Wed 9/129:00 a.m. -

1 stop12h 16m

Deal found 11/11C$ 1,017

Fri 12/34:36 p.m. -

1 stop7h 19m

Thu 18/36:30 a.m. -

1 stop6h 51m

Deal found 9/11C$ 1,055

Find flight deals from Ontario to Louisville

Round-trip from	C$ 596
One-way from	C$ 324
Popular in	February
Cheapest in	November
Average price	C$ 694

15/12-24/12
3 total stops
54h 40m total
Ontario to Louisville

Search Deals

12/12-31/12
1 total stop
13h 32m total
Ontario to Louisville

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (C$ 66 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 35 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in November 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Sat 12/12

7:15 a.m.-8:47 p.m.

1 stop13h 32m

Louisville Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 324

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Tue 12/1

3:35 p.m.-8:29 p.m.

1 stop4h 54m

Louisville Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 367

Quickest round-trip

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Sun 27/12

5:55 p.m.-10:39 p.m.

1 stop4h 44m

Louisville Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 385

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Sat 12/12

12:00 p.m.-11:49 p.m.

2 stops11h 49m

Louisville Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 422

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Fri 25/12

12:00 p.m.-7:20 p.m.

2 stops7h 20m

Louisville Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 424

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Mon 16/11

7:35 a.m.-2:15 p.m.

1 stop6h 40m

Louisville Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 518

OttawaLouisville

YOW Ottawa - SDF Louisville Intl

YOWSDF

Ottawa

Fri 25/12

6:15 a.m.-5:20 p.m.

1 stop11h 05m

Louisville Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 528

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Wed 6/1

8:35 a.m.-4:35 p.m.

1 stop8h 00m

Louisville Intl

Thu 7/1

9:50 a.m.-2:25 p.m.

1 stop4h 35m

C$ 651

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Sun 27/12

8:35 a.m.-10:39 p.m.

1 stop14h 04m

Louisville Intl

Fri 1/1

7:00 a.m.-2:03 p.m.

1 stop7h 03m

C$ 651

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Tue 19/1

6:45 a.m.-1:26 p.m.

1 stop6h 41m

Louisville Intl

Thu 21/1

10:20 a.m.-4:47 p.m.

1 stop6h 27m

C$ 656

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 30 resultsSorted by cheapest first

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.

YYZ-SDF

YOW-SDF

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

CAON-SDF

YYZ-SDF

YOW-SDF

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

Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Louisville (average of C$ 671). Flying from Region of Ontario to Louisville in January is currently the most expensive (average of C$ 1,028). 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.

Related info for your journey

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.
How long is the flight from Region of Ontario to Louisville?
United Airlines and WestJet can get you from Region of Ontario to Louisville in just under 8h. Your travel time can differ by up to 28h 10m. The distance from Region of Ontario to Louisville is about 798 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
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, September is the cheapest month in which you can book a flight from Region of Ontario to Louisville (average of C$ 671). Flying from Region of Ontario to Louisville in January is currently the most expensive (average of C$ 1,028). 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

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Top 3 airlines flying from Ontario to Louisville

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	CheapestC$ 438	AverageC$ 761	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
WestJet	CheapestC$ 506	AverageC$ 832	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
American Airlines	CheapestC$ 555	AverageC$ 845	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

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

Cheapflights helps you search for flights from Ontario to Louisville via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Louisville?

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario to Louisville for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ontario to Louisville with no change fees?

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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Cheap flights from Ontario to Louisville from C$ 324

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to Louisville

Cheapest flights from Ontario to LouisvilleExplore 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 12 November 2026.

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 12 November 2026.

Best flights from Ontario to LouisvilleDiscover carefully curated flight deals from Ontario to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 November 2026.

Discover carefully curated flight deals from Ontario to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 November 2026.

Direct flights from Ontario to LouisvilleExplore direct flight options from Ontario to Louisville based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 November 2026.

Explore direct flight options from Ontario to Louisville based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 November 2026.

Last-minute flights from Ontario to LouisvilleDiscover last-minute flight deals from Ontario to Louisville. Data last updated 12 November 2026 and is based on user searches.

Discover last-minute flight deals from Ontario to Louisville. Data last updated 12 November 2026 and is based on user searches.

One-way flights from Ontario to LouisvilleSearch for one-way flight options from Ontario to Louisville. Find affordable one-way fares based on user searches. Data last updated 12 November 2026.

Search for one-way flight options from Ontario to Louisville. Find affordable one-way fares based on user searches. Data last updated 12 November 2026.

Find flight deals from Ontario to Louisville

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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.

Cheapflights Insights

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

Related info for your journey

What airport do you fly into for flights to Louisville from Ontario?

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

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

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

How can I find direct flights from Ontario to Louisville?

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Louisville

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Complete your trip

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Direct flights to United States

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Search flights from Ontario to Louisville by cabin class

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Ontario and Louisville flights

Browse other Ontario and Louisville flight options. Last updated on 12 November 2026.

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Top 3 airlines flying from Ontario to Louisville

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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 12 November 2026.

Best flights from Ontario to Louisville
Discover carefully curated flight deals from Ontario to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 November 2026.

Direct flights from Ontario to Louisville
Explore direct flight options from Ontario to Louisville based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 November 2026.

Last-minute flights from Ontario to Louisville
Discover last-minute flight deals from Ontario to Louisville. Data last updated 12 November 2026 and is based on user searches.

One-way flights from Ontario to Louisville
Search for one-way flight options from Ontario to Louisville. Find affordable one-way fares based on user searches. Data last updated 12 November 2026.