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Cheap flights from Ontario to Louisville from C$ 250

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 2/5. 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.
United Airlines Logo
5:50 p.m. - 10:50 p.m.
YOW
-
SDF
5h 00m
1 stop
United Airlines Logo
6:00 a.m. - 10:03 a.m.
SDF
-
YOW
4h 03m
1 stop
C$ 420United Airlines
Mon, 1 Jun - Thu, 4 Jun
Multiple Airlines Logo
1:30 p.m. - 9:28 a.m.
YYZ
-
SDF
19h 58m
1 stop
Multiple Airlines Logo
10:33 a.m. - 8:55 p.m.
SDF
-
YYZ
10h 22m
1 stop
C$ 436Multiple Airlines
Thu, 7 May - Thu, 14 May
United Airlines Logo
5:20 p.m. - 11:59 p.m.
YOW
-
SDF
6h 39m
1 stop
United Airlines Logo
6:00 a.m. - 10:03 a.m.
SDF
-
YOW
4h 03m
1 stop
C$ 437United Airlines
Tue, 26 May - Fri, 29 May
United Airlines Logo
5:50 p.m. - 10:50 p.m.
YOW
-
SDF
5h 00m
1 stop
United Airlines Logo
6:00 a.m. - 10:03 a.m.
SDF
-
YOW
4h 03m
1 stop
C$ 444United Airlines
Mon, 1 Jun - Thu, 4 Jun
Air Canada Logo
9:05 a.m. - 10:50 p.m.
YOW
-
SDF
13h 45m
2 stops
Air Canada Logo
6:00 a.m. - 10:03 a.m.
SDF
-
YOW
4h 03m
1 stop
C$ 498Air Canada
Mon, 1 Jun - Thu, 4 Jun
Delta Logo
6:55 a.m. - 1:51 p.m.
YOW
-
SDF
6h 56m
2 stops
Delta Logo
7:50 a.m. - 5:35 p.m.
SDF
-
YOW
9h 45m
2 stops
C$ 528Delta
Tue, 26 May - Fri, 29 May
Air Canada Logo
9:00 a.m. - 10:30 p.m.
YOW
-
SDF
13h 30m
2 stops
Air Canada Logo
6:00 a.m. - 10:03 a.m.
SDF
-
YOW
4h 03m
1 stop
C$ 556Air Canada
Mon, 1 Jun - Thu, 4 Jun
Delta Logo
6:15 p.m. - 11:59 p.m.
YUL
-
SDF
5h 44m
1 stop
Delta Logo
5:45 p.m. - 11:56 p.m.
SDF
-
YUL
6h 11m
1 stop
C$ 596Delta
Tue, 15 Sep - Tue, 22 Sep
American Airlines Logo
7:55 a.m. - 12:45 p.m.
YUL
-
SDF
4h 50m
1 stop
American Airlines Logo
8:55 a.m. - 10:44 p.m.
SDF
-
YUL
13h 49m
1 stop
C$ 610American Airlines
Tue, 15 Sep - Tue, 22 Sep
American Airlines Logo
7:51 a.m. - 6:37 p.m.
YUL
-
SDF
10h 46m
1 stop
American Airlines Logo
6:25 p.m. - 12:29 p.m.
SDF
-
YUL
18h 04m
1 stop
C$ 628American Airlines
Sat, 30 May - Fri, 3 Jul

United Airlines flights from Region of Ontario to Louisville

Our best United Airlines deals on Region of Ontario to Louisville flight tickets
United Airlines
1 Jun
YOW5:50 p.m.Ottawa
5h 00m
1 stop
SDF10:50 p.m.Louisville Intl
4 Jun
SDF6:00 a.m.Louisville Intl
4h 03m
1 stop
YOW10:03 a.m.Ottawa
C$ 420
United Airlines
26 May
YOW5:20 p.m.Ottawa
6h 39m
1 stop
SDF11:59 p.m.Louisville Intl
27 May
SDF6:00 a.m.Louisville Intl
12h 48m
1 stop
YOW6:48 p.m.Ottawa
C$ 437
United Airlines
1 Jun
YOW5:50 p.m.Ottawa
5h 00m
1 stop
SDF10:50 p.m.Louisville Intl
4 Jun
SDF6:00 a.m.Louisville Intl
4h 03m
1 stop
YOW10:03 a.m.Ottawa
C$ 444

Air Canada flights from Region of Ontario to Louisville

Our best Air Canada deals on Region of Ontario to Louisville flight tickets
Air Canada
1 Jun
YOW9:05 a.m.Ottawa
13h 45m
2 stops
SDF10:50 p.m.Louisville Intl
4 Jun
SDF6:00 a.m.Louisville Intl
4h 03m
1 stop
YOW10:03 a.m.Ottawa
C$ 498
Air Canada
1 Jun
YOW9:00 a.m.Ottawa
13h 30m
2 stops
SDF10:30 p.m.Louisville Intl
4 Jun
SDF6:00 a.m.Louisville Intl
4h 03m
1 stop
YOW10:03 a.m.Ottawa
C$ 556
Air Canada
28 Jun
YOW9:55 a.m.Ottawa
10h 28m
2 stops
SDF8:23 p.m.Louisville Intl
5 Jul
SDF5:20 a.m.Louisville Intl
7h 57m
2 stops
YOW1:17 p.m.Ottawa
C$ 693

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 11 April 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

Cheapest round-trip
Quickest round-trip

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 1/6

5:50 p.m.-10:50 p.m.

1 stop5h 00m

Louisville Intl

Thu 4/6

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

1 stop4h 03m

C$ 420

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 7/5

1:30 p.m.-9:28 a.m.

1 stop19h 58m

Louisville Intl

Thu 14/5

10:33 a.m.-8:55 p.m.

1 stop10h 22m

C$ 436

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Tue 26/5

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

1 stop6h 39m

Louisville Intl

Fri 29/5

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

1 stop4h 03m

C$ 437

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 1/6

5:50 p.m.-10:50 p.m.

1 stop5h 00m

Louisville Intl

Thu 4/6

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

1 stop4h 03m

C$ 444

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 1/6

9:05 a.m.-10:50 p.m.

2 stops13h 45m

Louisville Intl

Thu 4/6

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

1 stop4h 03m

C$ 498

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Tue 26/5

6:55 a.m.-1:51 p.m.

2 stops6h 56m

Louisville Intl

Fri 29/5

7:50 a.m.-5:35 p.m.

2 stops9h 45m

C$ 528

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 1/6

9:00 a.m.-10:30 p.m.

2 stops13h 30m

Louisville Intl

Thu 4/6

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

1 stop4h 03m

C$ 556

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Tue 15/9

6:15 p.m.-11:59 p.m.

1 stop5h 44m

Louisville Intl

Tue 22/9

5:45 p.m.-11:56 p.m.

1 stop6h 11m

C$ 596

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Tue 15/9

7:55 a.m.-12:45 p.m.

1 stop4h 50m

Louisville Intl

Tue 22/9

8:55 a.m.-10:44 p.m.

1 stop13h 49m

C$ 610

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Sat 30/5

7:51 a.m.-6:37 p.m.

1 stop10h 46m

Louisville Intl

Fri 3/7

6:25 p.m.-12:29 p.m.

1 stop18h 04m

C$ 628

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

Can stopping save me money on Region of Ontario to Louisville flights?

You could potentially save up to 33% on your flight if you consider stops on a Region of Ontario to Louisville flight.

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

3h 44m

Direct flights

None
The fastest flight from Region of Ontario to Louisville takes 3h 44m
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

Frequently asked questions about flying from Ontario to Louisville

  • 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
United AirlinesPriceFrom C$ 425Free CancellationRating
7.4
9,571 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 494Free CancellationRating
7.1
10,916 reviews
Search Air Canada flights
American AirlinesPriceFrom C$ 539Free CancellationRating
7.1
11,569 reviews
Search American Airlines flights
WestJetPriceFrom C$ 635Free CancellationRating
7.2
3,320 reviews
Search WestJet 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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