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Cheap flights from Ontario to Louisville from C$ 249

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Louisville departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Ontario to Louisville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:30 a.m. - 8:20 p.m.
YYZ
-
SDF
10h 50m
1 stop
Multiple Airlines Logo
9:10 p.m. - 2:05 p.m.
SDF
-
YYZ
16h 55m
1 stop
C$ 410Multiple Airlines
Fri, 5 Jun - Mon, 8 Jun
United Airlines Logo
10:44 a.m. - 4:41 p.m.
YOW
-
SDF
5h 57m
1 stop
United Airlines Logo
1:55 p.m. - 9:35 p.m.
SDF
-
YOW
7h 40m
1 stop
C$ 421United Airlines
Tue, 31 Mar - Tue, 21 Apr
Multiple Airlines Logo
6:30 a.m. - 2:27 p.m.
YYZ
-
SDF
7h 57m
1 stop
Multiple Airlines Logo
9:10 p.m. - 2:05 p.m.
SDF
-
YYZ
16h 55m
1 stop
C$ 442Multiple Airlines
Thu, 4 Jun - Mon, 8 Jun
Multiple Airlines Logo
6:30 a.m. - 2:27 p.m.
YYZ
-
SDF
7h 57m
1 stop
Multiple Airlines Logo
9:10 p.m. - 2:05 p.m.
SDF
-
YYZ
16h 55m
1 stop
C$ 446Multiple Airlines
Sun, 7 Jun - Mon, 8 Jun
Multiple Airlines Logo
9:30 a.m. - 2:27 p.m.
YYZ
-
SDF
28h 57m
1 stop
Multiple Airlines Logo
9:10 p.m. - 2:05 p.m.
SDF
-
YYZ
16h 55m
1 stop
C$ 460Multiple Airlines
Wed, 3 Jun - Mon, 8 Jun
American Airlines Logo
11:33 a.m. - 9:30 p.m.
YYZ
-
SDF
9h 57m
1 stop
American Airlines Logo
6:00 a.m. - 5:43 p.m.
SDF
-
YYZ
11h 43m
1 stop
C$ 506American Airlines
Wed, 22 Apr - Sat, 25 Apr
American Airlines Logo
1:10 p.m. - 11:20 p.m.
YYZ
-
SDF
10h 10m
1 stop
American Airlines Logo
12:07 p.m. - 9:29 p.m.
SDF
-
YYZ
9h 22m
1 stop
C$ 516American Airlines
Fri, 20 Mar - Fri, 27 Mar
Delta Logo
5:40 a.m. - 9:16 p.m.
YOW
-
SDF
15h 36m
2 stops
Delta Logo
5:35 p.m. - 12:39 a.m.
SDF
-
YOW
7h 04m
2 stops
C$ 569Delta
Sat, 4 Apr - Wed, 8 Apr
Delta Logo
7:30 p.m. - 11:25 a.m.
YUL
-
SDF
15h 55m
1 stop
Delta Logo
6:35 a.m. - 6:35 p.m.
SDF
-
YUL
12h 00m
1 stop
C$ 594Delta
Mon, 23 Mar - Mon, 30 Mar
Air Canada Logo
11:10 a.m. - 10:13 p.m.
YOW
-
SDF
11h 03m
1 stop
Air Canada Logo
5:35 a.m. - 10:26 a.m.
SDF
-
YOW
4h 51m
1 stop
C$ 751Air Canada
Sat, 14 Mar - Sat, 21 Mar

United Airlines flights from Region of Ontario to Louisville

Our best United Airlines deals on Region of Ontario to Louisville flight tickets
United Airlines
31 Mar
YOW10:44 a.m.Ottawa
5h 57m
1 stop
SDF4:41 p.m.Louisville Intl
21 Apr
SDF1:55 p.m.Louisville Intl
7h 40m
1 stop
YOW9:35 p.m.Ottawa
C$ 421
United Airlines
31 Mar
YOW10:00 a.m.Ottawa
4h 47m
1 stop
SDF2:47 p.m.Louisville Intl
16 Apr
SDF5:00 a.m.Louisville Intl
10h 20m
2 stops
YOW3:20 p.m.Ottawa
C$ 506
United Airlines
31 Mar
YOW6:00 a.m.Ottawa
10h 41m
2 stops
SDF4:41 p.m.Louisville Intl
16 Apr
SDF7:20 a.m.Louisville Intl
8h 00m
2 stops
YOW3:20 p.m.Ottawa
C$ 517

Delta flights from Region of Ontario to Louisville

Our best Delta deals on Region of Ontario to Louisville flight tickets
Delta
4 Apr
YOW5:40 a.m.Ottawa
15h 36m
2 stops
SDF9:16 p.m.Louisville Intl
8 Apr
SDF5:35 p.m.Louisville Intl
7h 04m
2 stops
YOW12:39 a.m.Ottawa
C$ 569
Delta
17 Apr
YYZ6:00 a.m.Toronto Pearson Intl
10h 27m
1 stop
SDF4:27 p.m.Louisville Intl
22 Apr
SDF6:55 a.m.Louisville Intl
10h 26m
2 stops
YYZ5:21 p.m.Toronto Pearson Intl
C$ 577
Delta
23 Mar
YUL7:30 p.m.Montreal Pierre Elliott Trudeau Intl
15h 55m
1 stop
SDF11:25 a.m.Louisville Intl
30 Mar
SDF6:35 a.m.Louisville Intl
12h 00m
1 stop
YUL6:35 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 594

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Louisville 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, momondo users made 96,600 searches. Data last updated 22 February 2026.
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

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Fri 5/6

9:30 a.m.-8:20 p.m.

1 stop10h 50m

Louisville Intl

Mon 8/6

9:10 p.m.-2:05 p.m.

1 stop16h 55m

C$ 410

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Tue 31/3

10:44 a.m.-4:41 p.m.

1 stop5h 57m

Louisville Intl

Tue 21/4

1:55 p.m.-9:35 p.m.

1 stop7h 40m

C$ 421

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 4/6

6:30 a.m.-2:27 p.m.

1 stop7h 57m

Louisville Intl

Mon 8/6

9:10 p.m.-2:05 p.m.

1 stop16h 55m

C$ 442

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sun 7/6

6:30 a.m.-2:27 p.m.

1 stop7h 57m

Louisville Intl

Mon 8/6

9:10 p.m.-2:05 p.m.

1 stop16h 55m

C$ 446

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Wed 3/6

9:30 a.m.-2:27 p.m.

1 stop28h 57m

Louisville Intl

Mon 8/6

9:10 p.m.-2:05 p.m.

1 stop16h 55m

C$ 460

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Wed 22/4

11:33 a.m.-9:30 p.m.

1 stop9h 57m

Louisville Intl

Sat 25/4

6:00 a.m.-5:43 p.m.

1 stop11h 43m

C$ 506

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Fri 20/3

1:10 p.m.-11:20 p.m.

1 stop10h 10m

Louisville Intl

Fri 27/3

12:07 p.m.-9:29 p.m.

1 stop9h 22m

C$ 516

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Sat 4/4

5:40 a.m.-9:16 p.m.

2 stops15h 36m

Louisville Intl

Wed 8/4

5:35 p.m.-12:39 a.m.

2 stops7h 04m

C$ 569

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Mon 23/3

7:30 p.m.-11:25 a.m.

1 stop15h 55m

Louisville Intl

Mon 30/3

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

1 stop12h 00m

C$ 594

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Sat 14/3

11:10 a.m.-10:13 p.m.

1 stop11h 03m

Louisville Intl

Sat 21/3

5:35 a.m.-10:26 a.m.

1 stop4h 51m

C$ 751

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Louisville from

How to get the cheapest flight ticket from Region of Ontario to Louisville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Louisville Intl?

United Airlines, American Airlines, and Delta are the most popular carriers operating from Ontario to Louisville Intl

Which airlines fly to Louisville?

Air Canada, WestJet and United Airlines are the top three most popular airlines that fly to Louisville from Region of Ontario according to our data. Air Canada is the first choice among our users, with 42% of people opting to fly with this airline when travelling to Louisville. Keep in mind that there are 4 different airlines that fly to Louisville on a routine basis, so you have a few additional options to choose from.

Cheap Region of Ontario to Louisville flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Louisville

Fastest flight time

4h 16m

Direct flights

None
The fastest flight from Region of Ontario to Louisville takes 4h 16m
There are no direct flights from Region of Ontario to Louisville. There are no popular flight routes from Region of Ontario to Louisville.
Search flight deals

  • When did momondo last update prices for flights from Ontario to Louisville Intl Airport?

    Prices for flights from Ontario to Louisville Intl Airport are updated daily.

  • How many operators does momondo search for flights from Ontario to Louisville Intl Airport?

  • How old do you have to be to fly from Ontario to Louisville Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario to Louisville Intl Airport.

  • What documentation or ID do you need to fly to Louisville Intl Airport?

    The travel and health documents you'll need for your trip to Louisville Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Louisville Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Region of Ontario to Louisville

Compare and see reviews for airlines that fly from Region of Ontario to Louisville with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 397Free CancellationRating
7.1
10,738 reviews
Search Air Canada flights
WestJetPriceFrom C$ 464Free CancellationRating
7.2
3,270 reviews
Search WestJet flights
United AirlinesPriceFrom C$ 482Free CancellationRating
7.4
9,341 reviews
Search United Airlines flights
American AirlinesPriceFrom C$ 533Free CancellationRating
7.2
11,338 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Louisville?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Louisville . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to Louisville with flexible booking policies on momondo?

momondo does allow users to show only those flights to Louisville from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Louisville?

momondo provides multiple filters to help you find the best flight to Louisville from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Louisville right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Louisville now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Louisville and let you know when they change.

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