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Cheap flights from Ontario to Louisville from $177

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 12/31. 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
0 bags

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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
5:11 pm - 10:30 pmYOW-SDF
5h 19m1 stop
United Airlines Logo
8:29 am - 9:18 pmSDF-YOW
12h 49m1 stop
$300United Airlines
Find Deal
Mon, Feb 2 - Wed, Feb 4
Multiple Airlines Logo
7:00 am - 10:31 amYYZ-SDF
27h 31m1 stop
Multiple Airlines Logo
7:44 pm - 5:44 pmSDF-YYZ
22h 00m1 stop
$301Multiple Airlines
Find Deal
Thu, Dec 4 - Sun, Dec 7
Multiple Airlines Logo
8:30 pm - 10:31 amYYZ-SDF
14h 01m1 stop
Multiple Airlines Logo
11:21 am - 8:13 pmSDF-YYZ
32h 52m2 stops
$302Multiple Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Multiple Airlines Logo
8:20 pm - 1:00 pmYYZ-SDF
16h 40m1 stop
Multiple Airlines Logo
3:28 pm - 2:20 pmSDF-YYZ
22h 52m2 stops
$305Multiple Airlines
Find Deal
Thu, Jan 8 - Sun, Jan 11
Air Canada Logo
9:45 am - 7:42 pmYOW-SDF
9h 57m1 stop
Air Canada Logo
6:15 am - 4:23 pmSDF-YOW
10h 08m2 stops
$352Air Canada
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Tue, Feb 24 - Wed, Feb 25
Air Canada Logo
10:50 am - 11:23 pmYOW-SDF
12h 33m2 stops
Air Canada Logo
9:50 am - 2:27 pmSDF-YOW
4h 37m1 stop
$353Air Canada
Find Deal
Mon, Feb 2 - Wed, Feb 4
Delta Logo
5:40 am - 1:49 pmYOW-SDF
8h 09m2 stops
Delta Logo
3:16 pm - 12:42 amSDF-YOW
9h 26m2 stops
$413Delta
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Wed, Dec 3 - Sun, Dec 7
Delta Logo
7:00 am - 1:12 pmYUL-SDF
6h 12m1 stop
Delta Logo
7:25 am - 11:58 amSDF-YUL
4h 33m1 stop
$552Delta
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Thu, Dec 25 - Thu, Jan 1
American Airlines Logo
7:00 am - 11:54 pmYUL-SDF
16h 54m1 stop
American Airlines Logo
7:53 am - 10:39 pmSDF-YUL
14h 46m1 stop
$567American Airlines
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Mon, Dec 15 - Sat, Jan 3
American Airlines Logo
2:26 pm - 8:50 amYUL-SDF
18h 24m1 stop
American Airlines Logo
8:00 am - 10:39 pmSDF-YUL
14h 39m1 stop
$615American Airlines
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Fri, Dec 19 - Sun, Dec 28

United Airlines flights from Region of Ontario to Louisville

Our best United Airlines deals on Region of Ontario to Louisville flight tickets
United Airlines
Feb 2
YOW5:11 pmOttawa
5h 19m
1 stop
SDF10:30 pmLouisville Intl
Feb 4
SDF8:29 amLouisville Intl
12h 49m
1 stop
YOW9:18 pmOttawa
$300
Find similar
United Airlines
Jan 1
YOW6:15 amOttawa
14h 17m
1 stop
SDF8:32 pmLouisville Intl
Jan 8
SDF2:05 pmLouisville Intl
7h 13m
1 stop
YOW9:18 pmOttawa
$420
Find similar
United Airlines
Dec 15
YOW2:17 pmOttawa
6h 25m
1 stop
SDF8:42 pmLouisville Intl
Dec 22
SDF9:55 amLouisville Intl
13h 59m
1 stop
YOW11:54 pmOttawa
$442
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Air Canada flights from Region of Ontario to Louisville

Our best Air Canada deals on Region of Ontario to Louisville flight tickets
Air Canada
Feb 24
YOW9:45 amOttawa
9h 57m
1 stop
SDF7:42 pmLouisville Intl
Feb 25
SDF6:15 amLouisville Intl
10h 08m
2 stops
YOW4:23 pmOttawa
$352
Find similar
Air Canada
Feb 2
YOW10:50 amOttawa
12h 33m
2 stops
SDF11:23 pmLouisville Intl
Feb 4
SDF9:50 amLouisville Intl
4h 37m
1 stop
YOW2:27 pmOttawa
$353
Find similar
Air Canada
Dec 25
YUL10:30 amMontreal Pierre Elliott Trudeau Intl
8h 41m
2 stops
SDF7:11 pmLouisville Intl
Jan 1
SDF9:05 amLouisville Intl
9h 18m
2 stops
YUL6:23 pmMontreal Pierre Elliott Trudeau Intl
$613
Find similar

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 832,500 searches. Data last updated November 17, 2025.
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

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 2/2

5:11 pm-10:30 pm

1 stop5h 19m

Louisville Intl

Wed 2/4

8:29 am-9:18 pm

1 stop12h 49m

$300

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 12/4

7:00 am-10:31 am

1 stop27h 31m

Louisville Intl

Sun 12/7

7:44 pm-5:44 pm

1 stop22h 00m

$301

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 12/4

8:30 pm-10:31 am

1 stop14h 01m

Louisville Intl

Mon 12/8

11:21 am-8:13 pm

2 stops32h 52m

$302

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 1/8

8:20 pm-1:00 pm

1 stop16h 40m

Louisville Intl

Sun 1/11

3:28 pm-2:20 pm

2 stops22h 52m

$305

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Tue 2/24

9:45 am-7:42 pm

1 stop9h 57m

Louisville Intl

Wed 2/25

6:15 am-4:23 pm

2 stops10h 08m

$352

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Mon 2/2

10:50 am-11:23 pm

2 stops12h 33m

Louisville Intl

Wed 2/4

9:50 am-2:27 pm

1 stop4h 37m

$353

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 12/3

5:40 am-1:49 pm

2 stops8h 09m

Louisville Intl

Sun 12/7

3:16 pm-12:42 am

2 stops9h 26m

$413

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Thu 12/25

7:00 am-1:12 pm

1 stop6h 12m

Louisville Intl

Thu 1/1

7:25 am-11:58 am

1 stop4h 33m

$552

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Mon 12/15

7:00 am-11:54 pm

1 stop16h 54m

Louisville Intl

Sat 1/3

7:53 am-10:39 pm

1 stop14h 46m

$567

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Fri 12/19

2:26 pm-8:50 am

1 stop18h 24m

Louisville Intl

Sun 12/28

8:00 am-10:39 pm

1 stop14h 39m

$615

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 month to fly to Louisville?

If you are unable to visit Louisville during the month of February, then departing from Region of Ontario during the month April is also very affordable. Most momondo users find prices during this month for around $328.

What is the cheapest day to depart on your flight to Louisville?

On average, the least expensive day to fly to Louisville from Region of Ontario is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $271. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Region of Ontario to Louisville on a Monday will generally be more expensive and average around $503. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Louisville?

Our data shows that the cheapest Region of Ontario to Louisville flights are usually those with departure times in the afternoon. Our users have found flights to Louisville in the afternoon for as low as $327. At noon is when there is more demand to fly to Louisville, so prices are often more expensive at around $473 per ticket.

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

You could potentially save up to 12% 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

Direct flights

None
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 refresh 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 for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for 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 required for your trip to Louisville Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Louisville Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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
WestJetPriceFrom $321Free CancellationRating
7.2
3,163 reviews
Search WestJet flights

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
French Lick
Elizabethtown
West Baden Springs
Bardstown
Jeffersonville
Shepherdsville
New Albany
Elizabeth
Corydon
Charlestown
Springfield
Georgetown
Brandenburg

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Louisville from Ontario.

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 simply researching potential flights to Louisville, momondo offers a useful price alert feature which will track prices for flights to Louisville from Ontario and alert you when they change.

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