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Cheap flights from Louisville to Ontario from C$ 290

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — YYZ
23 Aug — 30 Aug1
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 24 July 2026.

Fri 6/118:54 p.m.
SDF
-
YYZ
1 stop18h 26m
Multiple Airlines
Mon 9/117:25 a.m.
YYZ
-
SDF
1 stop10h 38m
Multiple Airlines
Deal found 21/7C$ 518
Mon 14/911:15 a.m.
SDF
-
YYZ
1 stop9h 40m
Multiple Airlines
Wed 23/99:30 a.m.
YYZ
-
SDF
2 stops34h 59m
Multiple Airlines
Deal found 21/7C$ 584
Thu 10/99:09 p.m.
SDF
-
YYZ
1 stop17h 46m
Multiple Airlines
Fri 18/98:10 a.m.
YYZ
-
SDF
2 stops26h 01m
Multiple Airlines
Deal found 23/7C$ 631
Sat 29/86:08 a.m.
SDF
-
YYZ
1 stop10h 37m
American Airlines
Wed 2/911:01 a.m.
YYZ
-
SDF
1 stop10h 37m
American Airlines
Deal found 23/7C$ 652
Wed 2/96:05 a.m.
SDF
-
YYZ
1 stop5h 05m
American Airlines
Wed 9/95:45 p.m.
YYZ
-
SDF
1 stop5h 37m
American Airlines
Deal found 19/7C$ 662
Sat 22/86:28 a.m.
SDF
-
YYZ
1 stop6h 05m
American Airlines
Sat 29/811:39 a.m.
YYZ
-
SDF
1 stop6h 56m
American Airlines
Deal found 20/7C$ 664
Mon 31/811:19 a.m.
SDF
-
YUL
2 stops32h 13m
Multiple Airlines
Wed 30/96:47 p.m.
YUL
-
SDF
1 stop5h 12m
Multiple Airlines
Deal found 19/7C$ 683
Fri 11/95:50 p.m.
SDF
-
YUL
1 stop5h 37m
WestJet
Wed 16/96:00 a.m.
YUL
-
SDF
1 stop3h 52m
WestJet
Deal found 22/7C$ 686
Tue 8/912:34 p.m.
SDF
-
YUL
1 stop11h 10m
WestJet
Thu 10/96:00 a.m.
YUL
-
SDF
1 stop3h 52m
WestJet
Deal found 21/7C$ 687
Mon 19/103:24 p.m.
SDF
-
YUL
1 stop8h 35m
WestJet
Thu 29/106:50 p.m.
YUL
-
SDF
1 stop15h 04m
WestJet
Deal found 23/7C$ 688
Fri 7/81:17 p.m.
SDF
-
YYZ
1 stop8h 42m
Delta
Wed 12/86:00 a.m.
YYZ
-
SDF
1 stop7h 27m
Delta
Deal found 20/7C$ 688
Sun 18/107:00 a.m.
SDF
-
YUL
1 stop16h 59m
WestJet
Wed 21/1012:50 p.m.
YUL
-
SDF
1 stop4h 27m
WestJet
Deal found 23/7C$ 695

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 24 July 2026.

Round-trip from

C$ 518

One-way from

C$ 290

Popular in

October

Cheapest in

March

Average price

C$ 870
6/11-9/11
  • 6/11-9/11
  • 2 total stops
  • 29h 04m total
  • Louisville to Ontario
Search Deals
Delta
  • Delta
  • 18/8
  • 1 total stop
  • 8h 56m total
  • Louisville to Ontario
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (C$ 389 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (C$ 101 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 24 July 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 14/9

11:15 a.m.-8:55 p.m.

1 stop9h 40m

Toronto Pearson Intl

Wed 23/9

9:30 a.m.-8:29 p.m.

2 stops34h 59m

C$ 584

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 7/8

1:17 p.m.-9:59 p.m.

1 stop8h 42m

Toronto Pearson Intl

Wed 12/8

6:00 a.m.-1:27 p.m.

1 stop7h 27m

C$ 688

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Mon 31/8

5:59 p.m.-11:41 p.m.

1 stop5h 42m

Toronto Pearson Intl

Wed 30/9

11:38 a.m.-7:10 p.m.

1 stop7h 32m

C$ 688

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Fri 11/9

5:59 p.m.-8:35 a.m.

1 stop14h 36m

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

6:00 a.m.-9:52 a.m.

1 stop3h 52m

C$ 691

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 21/8

3:25 p.m.-11:57 p.m.

1 stop8h 32m

Toronto Pearson Intl

Sun 23/8

9:45 a.m.-5:19 p.m.

1 stop7h 34m

C$ 700

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Fri 20/11

10:15 a.m.-3:59 p.m.

1 stop5h 44m

Montreal Pierre Elliott Trudeau Intl

Fri 27/11

12:45 p.m.-5:40 p.m.

1 stop4h 55m

C$ 701

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Sun 4/10

9:09 p.m.-2:55 p.m.

1 stop17h 46m

Toronto Pearson Intl

Fri 9/10

1:30 p.m.-11:01 a.m.

1 stop21h 31m

C$ 708

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sun 30/8

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

1 stop7h 39m

Montreal Pierre Elliott Trudeau Intl

Wed 30/9

2:25 p.m.-8:43 p.m.

1 stop6h 18m

C$ 718

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Mon 31/8

7:55 a.m.-4:20 p.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 30/9

9:30 a.m.-5:10 p.m.

1 stop7h 40m

C$ 718

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Fri 16/10

5:40 p.m.-11:27 p.m.

1 stop5h 47m

Montreal Pierre Elliott Trudeau Intl

Sun 25/10

6:50 p.m.-12:02 a.m.

1 stop5h 12m

C$ 733

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/7

Showing 1-10 of 42 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, January is the cheapest month in which you can book a flight from Louisville to Region of Ontario (average of C$ 726). Flying from Louisville to Region of Ontario in December is currently the most expensive (average of C$ 1,292). 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

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 WestJet, Delta, and United Airlines fly from Louisville to Region of Ontario in about 5h 37m. The time it takes to get you to your destination can typically vary by up to 6h 24m. 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 - London.

  • 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, January is the cheapest month in which you can book a flight from Louisville to Region of Ontario (average of C$ 726). Flying from Louisville to Region of Ontario in December is currently the most expensive (average of C$ 1,292). 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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