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

Delta and United Airlines can get you from Region of Ontario to Louisville in just under 4h 26m. Your travel time can differ by up to 2h 13m. 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 Montreal Pierre Elliott Trudeau Intl - Louisville Intl. You may also consider Toronto Pearson 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$ 299+ Cheap Flights from Ontario to Louisville

Cheap flight deals from Ontario to Louisville

Enter your travel dates to find the best prices.

Cheapest

Best

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 30 September 2026.

Thu 12/1112:20 p.m. -

1 stop8h 09m

Thu 19/119:09 p.m. -

1 stop26h 41m

Deal found 28/9C$ 521

Thu 29/107:35 a.m. -

2 stops12h 54m

Sun 1/119:09 p.m. -

1 stop19h 06m

Deal found 26/9C$ 569

Mon 26/109:20 a.m. -

1 stop8h 58m

Sun 1/119:09 p.m. -

1 stop19h 06m

Deal found 26/9C$ 616

Sat 24/106:10 a.m. -

1 stop6h 44m

Sun 25/102:36 p.m. -

1 stop8h 20m

Deal found 28/9C$ 634

Wed 4/113:55 p.m. -

1 stop28h 34m

Mon 9/116:53 p.m. -

1 stop20h 07m

Deal found 29/9C$ 637

Sun 8/119:40 a.m. -

1 stop7h 38m

Sat 14/119:00 a.m. -

1 stop7h 15m

Deal found 29/9C$ 646

Mon 26/1011:38 a.m. -

1 stop8h 57m

Mon 2/118:05 a.m. -

1 stop9h 13m

Deal found 28/9C$ 654

Mon 9/117:05 a.m. -

1 stop10h 58m

Mon 16/116:53 p.m. -

1 stop22h 27m

Deal found 25/9C$ 658

Sun 18/105:20 p.m. -

1 stop6h 39m

Tue 20/102:12 p.m. -

1 stop4h 43m

Deal found 27/9C$ 844

Mon 9/115:10 a.m. -

2 stops9h 37m

Mon 16/115:10 a.m. -

2 stops12h 10m

Deal found 25/9C$ 959

Sun 18/105:20 p.m. -

1 stop6h 39m

Tue 20/107:00 a.m. -

2 stops8h 10m

Deal found 27/9C$ 968

Fri 9/106:25 a.m. -

1 stop11h 15m

Mon 12/106:30 p.m. -

1 stop14h 41m

Deal found 25/9C$ 987

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 30 September 2026.

Thu 12/1112:20 p.m. -

1 stop8h 09m

Thu 19/119:09 p.m. -

1 stop26h 41m

Deal found 29/9C$ 603

Sat 9/15:15 p.m. -

1 stop4h 26m

Tue 12/110:43 a.m. -

1 stop5h 35m

Deal found 28/9C$ 617

Wed 25/116:15 a.m. -

1 stop5h 41m

Wed 25/113:00 p.m. -

1 stop8h 57m

Deal found 26/9C$ 695

Sat 9/112:45 p.m. -

1 stop6h 14m

Tue 12/11:00 p.m. -

1 stop4h 59m

Deal found 25/9C$ 698

Sun 18/105:20 p.m. -

1 stop6h 39m

Tue 20/107:00 a.m. -

2 stops8h 10m

Deal found 27/9C$ 968

Sat 24/106:10 a.m. -

1 stop6h 44m

Sun 25/102:36 p.m. -

1 stop8h 20m

Deal found 28/9C$ 634

Sun 25/105:15 p.m. -

1 stop27h 27m

Sun 1/119:09 p.m. -

1 stop19h 06m

Deal found 27/9C$ 698

Sun 8/119:40 a.m. -

1 stop7h 38m

Sat 14/119:00 a.m. -

1 stop7h 15m

Deal found 29/9C$ 646

Sun 18/105:20 p.m. -

1 stop6h 39m

Tue 20/102:12 p.m. -

1 stop4h 43m

Deal found 27/9C$ 844

Tue 27/106:15 a.m. -

1 stop8h 26m

Sat 31/102:20 p.m. -

1 stop8h 36m

Deal found 26/9C$ 698

Mon 9/117:05 a.m. -

1 stop10h 58m

Mon 16/116:53 p.m. -

2 stops23h 05m

Deal found 25/9C$ 790

Mon 9/115:10 a.m. -

2 stops9h 37m

Mon 16/115:10 a.m. -

2 stops12h 10m

Deal found 25/9C$ 959

Thu 15/106:50 a.m. -

2 stops9h 59m

Mon 19/101:59 p.m. -

2 stops10h 21m

Deal found 29/9C$ 990

Sun 18/106:55 a.m. -

2 stops10h 23m

Tue 20/103:26 p.m. -

2 stops8h 54m

Deal found 29/9C$ 1,081

Find flight deals from Ontario to Louisville

Round-trip from	C$ 521
One-way from	C$ 299
Popular in	February
Cheapest in	May
Average price	C$ 880

12/11-19/11
2 total stops
34h 50m total
Ontario to Louisville

Search Deals

12/11-31/12
1 total stop
8h 09m total
Ontario to Louisville

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (C$ 48 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 33 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Thu 12/11

12:20 p.m.-8:29 p.m.

1 stop8h 09m

Louisville Intl

Wed 31/12

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

Nonstop0h 00m

C$ 299

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Mon 9/11

7:35 a.m.-6:03 p.m.

1 stop10h 28m

Louisville Intl

Wed 31/12

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

Nonstop0h 00m

C$ 322

OttawaLouisville

YOW Ottawa - SDF Louisville Intl

YOWSDF

Ottawa

Fri 13/11

12:45 p.m.-3:26 p.m.

3 stops26h 41m

Louisville Intl

Wed 31/12

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

Nonstop0h 00m

C$ 377

OttawaLouisville

YOW Ottawa - SDF Louisville Intl

YOWSDF

Ottawa

Fri 13/11

6:15 a.m.-8:52 p.m.

1 stop14h 37m

Louisville Intl

Wed 31/12

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

Nonstop0h 00m

C$ 471

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Mon 9/11

8:40 p.m.-1:03 p.m.

2 stops16h 23m

Louisville Intl

Wed 31/12

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

Nonstop0h 00m

C$ 526

OttawaLouisville

YOW Ottawa - SDF Louisville Intl

YOWSDF

Ottawa

Fri 13/11

5:30 a.m.-5:17 p.m.

2 stops11h 47m

Louisville Intl

Wed 31/12

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

Nonstop0h 00m

C$ 531

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Thu 12/11

12:20 p.m.-8:29 p.m.

1 stop8h 09m

Louisville Intl

Thu 19/11

9:09 p.m.-11:50 p.m.

1 stop26h 41m

C$ 603

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Sat 9/1

5:15 p.m.-9:41 p.m.

1 stop4h 26m

Louisville Intl

Tue 12/1

10:43 a.m.-4:18 p.m.

1 stop5h 35m

C$ 617

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Sat 24/10

6:10 a.m.-12:54 p.m.

1 stop6h 44m

Louisville Intl

Sun 25/10

2:36 p.m.-10:56 p.m.

1 stop8h 20m

C$ 634

TorontoLouisville

YYZ Toronto Pearson Intl - SDF Louisville Intl

YYZSDF

Toronto Pearson Intl

Sun 8/11

9:40 a.m.-5:18 p.m.

1 stop7h 38m

Louisville Intl

Sat 14/11

9:00 a.m.-4:15 p.m.

1 stop7h 15m

C$ 646

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/9

Showing 1-10 of 21 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$ 670). Flying from Region of Ontario to Louisville in January is currently the most expensive (average of C$ 1,026). 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?
Delta and United Airlines can get you from Region of Ontario to Louisville in just under 4h 26m. Your travel time can differ by up to 2h 13m. 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 Montreal Pierre Elliott Trudeau Intl - Louisville Intl. You may also consider Toronto Pearson 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$ 670). Flying from Region of Ontario to Louisville in January is currently the most expensive (average of C$ 1,026). 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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Top 3 airlines flying from Ontario to Louisville

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	CheapestC$ 436	AverageC$ 777	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
WestJet	CheapestC$ 505	AverageC$ 856	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
American Airlines	CheapestC$ 553	AverageC$ 843	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$ 299

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 12/11. 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 30 September 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 30 September 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 30 September 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 30 September 2026.

Last-minute flights from Ontario to LouisvilleDiscover last-minute flight deals from Ontario to Louisville. Data last updated 30 September 2026 and is based on user searches.

Discover last-minute flight deals from Ontario to Louisville. Data last updated 30 September 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 30 September 2026.

Search for one-way flight options from Ontario to Louisville. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Find flight deals from Ontario to Louisville

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Use the filters below to find and compare flights from Ontario to Louisville that are best for you.

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

Complete your trip to Louisville by adding a car rental and/or hotel reservation to your travel itinerary.

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

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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 30 September 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 30 September 2026.

Last-minute flights from Ontario to Louisville
Discover last-minute flight deals from Ontario to Louisville. Data last updated 30 September 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 30 September 2026.