How does KAYAK find such low prices on flights from Ontario to Louisville?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Louisville. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Louisville?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Ontario is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Ontario to Louisville?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Ontario with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Louisville?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$166 CHEAP FLIGHTS from Ontario to Louisville

KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals

Cheap Flight Deals from Ontario to Louisville

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Ontario to Louisville

Fri, Jun 13 - Tue, Jun 17

7:00 am - 4:32 pmYYZ-SDF

9h 32m2 stops

5:03 am - 2:05 pmSDF-YYZ

9h 02m1 stop

$338

Find Deal

Fri, Jun 13 - Tue, Jun 17

10:40 am - 3:22 pmYYZ-SDF

28h 42m1 stop

5:03 am - 2:05 pmSDF-YYZ

9h 02m1 stop

$341

Find Deal

Tue, Aug 5 - Tue, Aug 12

6:00 am - 2:54 pmYUL-SDF

8h 54m1 stop

12:20 pm - 9:30 pmSDF-YUL

9h 10m1 stop

$422Delta

Find Deal

Thu, Aug 7 - Tue, Aug 12

6:00 am - 2:54 pmYUL-SDF

8h 54m1 stop

6:05 am - 9:30 pmSDF-YUL

15h 25m1 stop

$428Delta

Find Deal

Tue, Aug 5 - Sun, Aug 10

10:30 am - 9:53 pmYUL-SDF

11h 23m2 stops

7:02 am - 4:55 pmSDF-YUL

9h 53m1 stop

$507American Airlines

Find Deal

Sat, Aug 9 - Tue, Aug 12

10:30 am - 10:47 pmYUL-SDF

12h 17m2 stops

7:12 am - 4:55 pmSDF-YUL

9h 43m1 stop

$511American Airlines

Find Deal

Sun, Jun 1 - Sun, Jun 8

6:30 am - 12:01 pmYYZ-SDF

5h 31m1 stop

7:50 am - 11:18 amSDF-YYZ

3h 28m1 stop

$516WestJet

Find Deal

Thu, Aug 7 - Mon, Aug 11

4:40 pm - 10:27 amYUL-SDF

17h 47m2 stops

10:00 am - 9:44 pmSDF-YUL

11h 44m2 stops

$557United Airlines

Find Deal

Sat, Aug 9 - Sat, Aug 9

7:00 am - 11:47 amYUL-SDF

4h 47m1 stop

3:20 pm - 11:55 pmSDF-YUL

8h 35m1 stop

$584WestJet

Find Deal

Thu, May 29 - Sat, May 31

6:40 am - 5:19 pmYOW-SDF

10h 39m1 stop

7:00 am - 6:52 pmSDF-YOW

11h 52m2 stops

$617United Airlines

Find Deal

Useful Info

Low season	January
High season	February
Cheapest flight	$166

Best time to beat the crowds but there is an average 15% increase in price.

Most popular time to fly and prices are also 16% lower on average.

Flight from Toronto to Louisville

How does KAYAK find such low prices on flights from Ontario to Louisville?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Louisville.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Louisville?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Ontario to Louisville?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Ontario with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Louisville?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Louisville

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Louisville

Louisville (SDF)

$166 Find Cheap Flights from Ontario to Louisville

KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

Cheap Flight Deals from Ontario to Louisville

Recent round-trip flight deals from Ontario to Louisville

Recent one-way flight deals from Ontario to Louisville

Recent last minute flight deals from Ontario to Louisville

Good to know

FAQs for booking flights from Ontario to Louisville

How does KAYAK find such low prices on flights from Ontario to Louisville?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Louisville.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Louisville?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Ontario to Louisville?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Ontario with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Louisville?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Louisville

Information on the airport you'll fly into in Louisville

Cabin class types available on flights to Ontario

Complete your trip to Louisville with a hotel stay or car rental

Find direct flights for Louisville

Flights to other popular destinations

Flights from domestic origins to Louisville

Choose which airport to fly into in Louisville

Find deals for your return flight