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Cheap flights from Louisville to Ontario from C$ 162

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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — YYZ
28 Feb — 7 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Louisville to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Louisville to Ontario
Explore the most affordable flight options available from Louisville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 January 2026.

Tue 24/23:33 p.m.
SDF
-
YYZ
1 stop19h 55m
Multiple Airlines
Tue 3/37:15 a.m.
YYZ
-
SDF
1 stop29h 06m
Multiple Airlines
Deal found 27/1C$ 422
Thu 26/23:33 p.m.
SDF
-
YYZ
1 stop30h 42m
Multiple Airlines
Thu 5/38:20 p.m.
YYZ
-
SDF
1 stop16h 01m
Multiple Airlines
Deal found 27/1C$ 438
Mon 2/31:19 p.m.
SDF
-
YYZ
1 stop10h 55m
Multiple Airlines
Fri 6/35:15 p.m.
YYZ
-
SDF
2 stops17h 50m
Multiple Airlines
Deal found 27/1C$ 447
Mon 13/412:03 p.m.
SDF
-
YYZ
1 stop12h 11m
Multiple Airlines
Wed 15/45:15 p.m.
YYZ
-
SDF
1 stop18h 58m
Multiple Airlines
Deal found 27/1C$ 464
Mon 16/312:03 p.m.
SDF
-
YUL
2 stops36h 35m
Multiple Airlines
Mon 23/38:00 a.m.
YUL
-
SDF
1 stop28h 19m
Multiple Airlines
Deal found 27/1C$ 498
Thu 16/41:03 p.m.
SDF
-
YYZ
1 stop11h 11m
Multiple Airlines
Sun 19/48:00 p.m.
YYZ
-
SDF
1 stop15h 38m
Multiple Airlines
Deal found 28/1C$ 524
Tue 17/31:14 p.m.
SDF
-
YUL
2 stops11h 16m
Multiple Airlines
Mon 23/38:00 a.m.
YUL
-
SDF
1 stop28h 19m
Multiple Airlines
Deal found 27/1C$ 532
Fri 13/312:03 p.m.
SDF
-
YUL
1 stop12h 27m
Multiple Airlines
Mon 23/38:00 a.m.
YUL
-
SDF
1 stop28h 19m
Multiple Airlines
Deal found 27/1C$ 557
Fri 6/31:19 p.m.
SDF
-
YYZ
2 stops9h 21m
Multiple Airlines
Mon 9/33:40 p.m.
YYZ
-
SDF
1 stop22h 58m
Multiple Airlines
Deal found 28/1C$ 561
Mon 16/312:03 p.m.
SDF
-
YUL
2 stops36h 35m
Multiple Airlines
Sun 22/34:35 p.m.
YUL
-
SDF
1 stop18h 33m
Multiple Airlines
Deal found 27/1C$ 566
Wed 1/46:33 a.m.
SDF
-
YYZ
1 stop11h 03m
American Airlines
Wed 8/411:44 a.m.
YYZ
-
SDF
1 stop9h 44m
American Airlines
Deal found 27/1C$ 574
Fri 10/47:05 p.m.
SDF
-
YUL
1 stop16h 39m
American Airlines
Tue 14/412:30 p.m.
YUL
-
SDF
1 stop10h 57m
American Airlines
Deal found 28/1C$ 589

Find flight deals from Louisville to Ontario

Keep the following information in mind while searching for Louisville to Ontario flight deals. Data was last updated 29 January 2026.

Round-trip from

C$ 422

One-way from

C$ 162

Popular in

December

Cheapest in

May
24/2-3/3
  • 24/2-3/3
  • 2 total stops
  • 49h 01m total
  • Louisville to Ontario
Search Deals
4/3
  • 4/3
  • 1 total stop
  • 10h 55m total
  • Louisville to Ontario
Search Deals
Highest demand for flights based on searches. 39% potential increase in price (C$ 659 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (C$ 74 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Ontario 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 29 January 2026.
Use the filters below to find and compare flights from Louisville to Ontario that are best for you.

Fly from

Louisville

Fly to

Ontario

Route

Depart

Return

Price

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Tue 24/2

3:33 p.m.-11:28 a.m.

1 stop19h 55m

Toronto Pearson Intl

Tue 3/3

7:15 a.m.-12:21 p.m.

1 stop29h 06m

C$ 422

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Mon 16/3

12:03 p.m.-12:38 a.m.

2 stops36h 35m

Montreal Pierre Elliott Trudeau Intl

Mon 23/3

8:00 a.m.-12:19 p.m.

1 stop28h 19m

C$ 498

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Mon 13/4

12:03 p.m.-12:14 a.m.

1 stop12h 11m

Toronto Pearson Intl

Wed 15/4

5:15 p.m.-2:38 p.m.

2 stops21h 23m

C$ 521

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Thu 16/4

1:03 p.m.-12:14 a.m.

1 stop11h 11m

Toronto Pearson Intl

Sun 19/4

8:00 p.m.-11:38 a.m.

1 stop15h 38m

C$ 524

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Wed 1/4

12:03 p.m.-12:14 a.m.

1 stop12h 11m

Toronto Pearson Intl

Wed 8/4

5:15 p.m.-1:26 p.m.

2 stops20h 11m

C$ 559

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 6/3

1:19 p.m.-10:40 p.m.

2 stops9h 21m

Toronto Pearson Intl

Mon 9/3

3:40 p.m.-2:38 p.m.

1 stop22h 58m

C$ 561

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Wed 1/4

6:33 a.m.-5:36 p.m.

1 stop11h 03m

Toronto Pearson Intl

Wed 8/4

11:44 a.m.-9:28 p.m.

1 stop9h 44m

C$ 574

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Mon 9/3

1:19 p.m.-12:14 a.m.

1 stop10h 55m

Toronto Pearson Intl

Sat 14/3

11:15 p.m.-11:08 a.m.

2 stops35h 53m

C$ 591

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Sun 8/3

8:14 p.m.-2:53 p.m.

1 stop18h 39m

Toronto Pearson Intl

Thu 12/3

7:15 a.m.-11:08 a.m.

2 stops27h 53m

C$ 599

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Mon 2/3

1:19 p.m.-12:14 a.m.

1 stop10h 55m

Toronto Pearson Intl

Fri 6/3

7:15 a.m.-11:05 a.m.

3 stops27h 50m

C$ 599

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/1

Showing 1-10 of 46 results
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Best time to book a flight from Louisville to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Louisville 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 Louisville to Ontario

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

Currently, April is the cheapest month in which you can book a flight from Louisville to Region of Ontario (average of C$ 262). Flying from Louisville to Region of Ontario in January is currently the most expensive (average of C$ 479). 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.

How much does it cost to fly round-trip from Louisville to Region of Ontario?

Related info for your journey

Find useful and relevant information for your journey from Louisville to Ontario. 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 from for flights from Louisville to Ontario?

    Most people fly from Louisville Intl (SDF) if they book a flight from Louisville to Ontario. Louisville Intl is conveniently located just 8.5 km from Louisville’s city centre.

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

    Airlines like American Airlines, Delta, and Air Canada fly from Louisville to Region of Ontario in about 11h 05m. The time it takes to get you to your destination can typically vary by up to 5h 34m. Louisville and Region of Ontario are separated by a distance of 663 km. This flight may include one or multiple stops.

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

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

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

    Yes. In addition to deals on Louisville to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Ontario.

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

    Yes. Cheapflights offers flight deals from Louisville to Ontario 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 Louisville to Region of Ontario?

    Currently, April is the cheapest month in which you can book a flight from Louisville to Region of Ontario (average of C$ 262). Flying from Louisville to Region of Ontario in January is currently the most expensive (average of C$ 479). 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 Louisville to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Louisville to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Louisville to Ontario.

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

Yes! Cheapflights helps users easily find flights from Louisville to Ontario with no change fees.

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