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Cheap flights from Louisville to Ontario from C$ 247

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 22/7. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — YYZ
10 Jul — 17 Jul1
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 10 June 2026.

Mon 3/88:48 p.m.
SDF
-
YYZ
1 stop17h 17m
Multiple Airlines
Mon 10/89:30 a.m.
YYZ
-
SDF
1 stop10h 50m
Multiple Airlines
Deal found 8/6C$ 513
Mon 3/88:48 p.m.
SDF
-
YYZ
1 stop17h 17m
Multiple Airlines
Sat 15/86:30 a.m.
YYZ
-
SDF
2 stops28h 02m
Multiple Airlines
Deal found 8/6C$ 514
Fri 7/89:10 p.m.
SDF
-
YYZ
1 stop16h 55m
Multiple Airlines
Mon 10/89:30 a.m.
YYZ
-
SDF
1 stop10h 50m
Multiple Airlines
Deal found 8/6C$ 555
Fri 7/89:10 p.m.
SDF
-
YYZ
1 stop16h 55m
Multiple Airlines
Sat 15/86:30 a.m.
YYZ
-
SDF
2 stops28h 02m
Multiple Airlines
Deal found 8/6C$ 557
Mon 3/88:48 p.m.
SDF
-
YYZ
1 stop17h 17m
Multiple Airlines
Wed 12/89:30 a.m.
YYZ
-
SDF
2 stops25h 02m
Multiple Airlines
Deal found 8/6C$ 570
Mon 3/88:48 p.m.
SDF
-
YYZ
1 stop17h 17m
Multiple Airlines
Tue 11/86:30 a.m.
YYZ
-
SDF
2 stops31h 46m
Multiple Airlines
Deal found 8/6C$ 587
Mon 3/88:48 p.m.
SDF
-
YYZ
1 stop17h 17m
Multiple Airlines
Thu 13/86:30 a.m.
YYZ
-
SDF
2 stops31h 58m
Multiple Airlines
Deal found 8/6C$ 590
Fri 17/78:48 p.m.
SDF
-
YYZ
1 stop17h 17m
Multiple Airlines
Tue 21/76:30 a.m.
YYZ
-
SDF
1 stop28h 56m
Multiple Airlines
Deal found 8/6C$ 601
Thu 6/89:24 p.m.
SDF
-
YYZ
2 stops24h 41m
Multiple Airlines
Mon 10/89:30 a.m.
YYZ
-
SDF
1 stop10h 50m
Multiple Airlines
Deal found 8/6C$ 603
Mon 3/88:48 p.m.
SDF
-
YYZ
1 stop17h 17m
Multiple Airlines
Fri 14/88:10 a.m.
YYZ
-
SDF
2 stops12h 10m
Multiple Airlines
Deal found 8/6C$ 608
Fri 7/89:10 p.m.
SDF
-
YYZ
1 stop16h 55m
Multiple Airlines
Wed 12/89:30 a.m.
YYZ
-
SDF
2 stops25h 02m
Multiple Airlines
Deal found 8/6C$ 612
Fri 7/89:10 p.m.
SDF
-
YYZ
1 stop16h 55m
Multiple Airlines
Thu 13/86:30 a.m.
YYZ
-
SDF
2 stops13h 25m
Multiple Airlines
Deal found 8/6C$ 638

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 10 June 2026.

Round-trip from

C$ 513

One-way from

C$ 247

Popular in

December

Cheapest in

March

Average price

C$ 1,022
3/8-10/8
  • 3/8-10/8
  • 2 total stops
  • 28h 07m total
  • Louisville to Ontario
Search Deals
22/7
  • 22/7
  • 1 total stop
  • 25h 49m total
  • Louisville to Ontario
Search Deals
Highest demand for flights based on searches. 31% potential increase in price (C$ 562 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 10 June 2026.
Use the filters below to find and compare flights from Louisville to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Mon 6/7

8:48 p.m.-4:55 p.m.

1 stop20h 07m

Toronto Pearson Intl

Wed 22/7

9:30 a.m.-10:38 a.m.

2 stops25h 08m

C$ 654

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sun 26/7

11:14 a.m.-4:10 p.m.

1 stop4h 56m

Montreal Pierre Elliott Trudeau Intl

Sat 1/8

9:15 a.m.-2:37 p.m.

1 stop5h 22m

C$ 711

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Tue 11/8

6:15 a.m.-11:56 a.m.

1 stop5h 41m

Montreal Pierre Elliott Trudeau Intl

Fri 14/8

3:25 p.m.-10:59 p.m.

1 stop7h 34m

C$ 711

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Tue 4/8

11:45 a.m.-9:19 p.m.

1 stop9h 34m

Toronto Pearson Intl

Tue 11/8

6:00 a.m.-4:44 p.m.

1 stop10h 44m

C$ 741

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Wed 8/7

12:16 p.m.-2:05 p.m.

1 stop25h 49m

Toronto Pearson Intl

Wed 15/7

9:50 a.m.-2:33 p.m.

1 stop28h 43m

C$ 753

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 7/8

2:09 p.m.-11:41 p.m.

1 stop9h 32m

Toronto Pearson Intl

Tue 11/8

6:00 a.m.-4:44 p.m.

1 stop10h 44m

C$ 767

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sat 10/10

7:20 a.m.-12:15 p.m.

1 stop4h 55m

Montreal Pierre Elliott Trudeau Intl

Tue 13/10

6:00 a.m.-1:39 p.m.

1 stop7h 39m

C$ 771

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sat 5/12

10:00 a.m.-3:02 p.m.

1 stop5h 02m

Montreal Pierre Elliott Trudeau Intl

Tue 8/12

3:00 p.m.-8:00 p.m.

1 stop5h 00m

C$ 771

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 7/8

11:45 a.m.-11:41 p.m.

1 stop11h 56m

Toronto Pearson Intl

Fri 14/8

6:00 a.m.-8:59 p.m.

1 stop14h 59m

C$ 792

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Fri 24/7

6:00 a.m.-10:03 a.m.

1 stop4h 03m

Ottawa

Fri 31/7

5:20 p.m.-11:59 p.m.

1 stop6h 39m

C$ 813

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/6

Showing 1-10 of 51 resultsSorted by cheapest first
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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, May is the cheapest month in which you can book a flight from Louisville to Region of Ontario (average of C$ 360). Flying from Louisville to Region of Ontario in November is currently the most expensive (average of C$ 1,174). 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 United Airlines and Delta fly from Louisville to Region of Ontario in about 4h 56m. The time it takes to get you to your destination can typically vary by up to 4h 38m. Louisville and Region of Ontario are separated by a distance of 1278 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, May is the cheapest month in which you can book a flight from Louisville to Region of Ontario (average of C$ 360). Flying from Louisville to Region of Ontario in November is currently the most expensive (average of C$ 1,174). 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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