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Cheap flights from Ontario to Louisville from $198

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 7/21. 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
6:00 am - 10:23 am
YOW
-
SDF
4h 23m
1 stop
United Airlines Logo
1:48 pm - 11:54 pm
SDF
-
YOW
10h 06m
1 stop
$351United Airlines
Sun, Jun 14 - Tue, Jun 30
United Airlines Logo
6:25 am - 8:36 pm
YOW
-
SDF
14h 11m
1 stop
United Airlines Logo
6:00 am - 9:56 am
SDF
-
YOW
3h 56m
1 stop
$354United Airlines
Wed, Aug 19 - Fri, Aug 21
United Airlines Logo
6:00 am - 11:59 pm
YOW
-
SDF
17h 59m
3 stops
United Airlines Logo
6:00 am - 9:56 am
SDF
-
YOW
3h 56m
1 stop
$368United Airlines
Wed, Aug 19 - Fri, Aug 21
Air Canada Logo
9:55 am - 7:05 pm
YOW
-
SDF
9h 10m
2 stops
Air Canada Logo
6:00 am - 9:56 am
SDF
-
YOW
3h 56m
1 stop
$415Air Canada
Wed, Aug 19 - Fri, Aug 21
Air Canada Logo
9:55 am - 4:38 pm
YOW
-
SDF
6h 43m
2 stops
Air Canada Logo
6:00 am - 9:56 am
SDF
-
YOW
3h 56m
1 stop
$428Air Canada
Wed, Aug 19 - Fri, Aug 21
Delta Logo
5:05 pm - 1:32 pm
YYZ
-
SDF
20h 27m
1 stop
Delta Logo
6:00 am - 11:40 pm
SDF
-
YYZ
17h 40m
1 stop
$446Delta
Thu, Jun 18 - Thu, Jun 25
American Airlines Logo
12:39 pm - 11:08 pm
YYZ
-
SDF
10h 29m
1 stop
American Airlines Logo
6:01 am - 4:48 pm
SDF
-
YYZ
10h 47m
1 stop
$454American Airlines
Sat, Jun 6 - Tue, Jun 9
Multiple Airlines Logo
6:30 am - 8:36 am
YYZ
-
SDF
26h 06m
2 stops
Multiple Airlines Logo
9:05 pm - 2:05 pm
SDF
-
YYZ
17h 00m
1 stop
$471Multiple Airlines
Tue, Jun 16 - Mon, Jun 22
Delta Logo
2:40 pm - 8:58 pm
YUL
-
SDF
6h 18m
1 stop
Delta Logo
5:59 pm - 8:33 am
SDF
-
YUL
14h 34m
1 stop
$472Delta
Wed, Jun 17 - Mon, Jun 22
Multiple Airlines Logo
9:30 am - 7:58 pm
YYZ
-
SDF
10h 28m
1 stop
Multiple Airlines Logo
9:10 pm - 2:05 pm
SDF
-
YYZ
16h 55m
1 stop
$474Multiple Airlines
Mon, Aug 3 - Fri, Aug 7

United Airlines flights from Region of Ontario to Louisville

Our best United Airlines deals on Region of Ontario to Louisville flight tickets
United Airlines
Jun 14
YOW6:00 amOttawa
4h 23m
1 stop
SDF10:23 amLouisville Intl
Jun 30
SDF1:48 pmLouisville Intl
10h 06m
1 stop
YOW11:54 pmOttawa
$351
United Airlines
Aug 19
YOW6:25 amOttawa
14h 11m
1 stop
SDF8:36 pmLouisville Intl
Aug 21
SDF6:00 amLouisville Intl
3h 56m
1 stop
YOW9:56 amOttawa
$354
United Airlines
Aug 19
YOW6:00 amOttawa
17h 59m
3 stops
SDF11:59 pmLouisville Intl
Aug 21
SDF6:00 amLouisville Intl
3h 56m
1 stop
YOW9:56 amOttawa
$368

Air Canada flights from Region of Ontario to Louisville

Our best Air Canada deals on Region of Ontario to Louisville flight tickets
Air Canada
Aug 19
YOW9:55 amOttawa
9h 10m
2 stops
SDF7:05 pmLouisville Intl
Aug 21
SDF6:00 amLouisville Intl
3h 56m
1 stop
YOW9:56 amOttawa
$415
Air Canada
Aug 19
YOW9:55 amOttawa
6h 43m
2 stops
SDF4:38 pmLouisville Intl
Aug 21
SDF6:00 amLouisville Intl
3h 56m
1 stop
YOW9:56 amOttawa
$428
Air Canada
Aug 19
YOW12:15 pmOttawa
6h 50m
2 stops
SDF7:05 pmLouisville Intl
Aug 21
SDF6:00 amLouisville Intl
3h 56m
1 stop
YOW9:56 amOttawa
$429

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 May 24, 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

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Sun 6/14

6:00 am-10:23 am

1 stop4h 23m

Louisville Intl

Tue 6/30

1:48 pm-11:54 pm

1 stop10h 06m

$351

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 8/19

6:25 am-8:36 pm

1 stop14h 11m

Louisville Intl

Fri 8/21

6:00 am-9:56 am

1 stop3h 56m

$354

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 8/19

6:00 am-11:59 pm

3 stops17h 59m

Louisville Intl

Fri 8/21

6:00 am-9:56 am

1 stop3h 56m

$368

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 8/19

9:55 am-7:05 pm

2 stops9h 10m

Louisville Intl

Fri 8/21

6:00 am-9:56 am

1 stop3h 56m

$415
Quickest round-trip

OttawaLouisville

YOW - SDF

YOWSDF

Ottawa

Wed 8/19

9:55 am-4:38 pm

2 stops6h 43m

Louisville Intl

Fri 8/21

6:00 am-9:56 am

1 stop3h 56m

$428

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Thu 6/18

5:05 pm-1:32 pm

1 stop20h 27m

Louisville Intl

Thu 6/25

6:00 am-11:40 pm

1 stop17h 40m

$446

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Sat 6/6

12:39 pm-11:08 pm

1 stop10h 29m

Louisville Intl

Tue 6/9

6:01 am-4:48 pm

1 stop10h 47m

$454

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Tue 6/16

6:30 am-8:36 am

2 stops26h 06m

Louisville Intl

Mon 6/22

9:05 pm-2:05 pm

1 stop17h 00m

$471

MontrealLouisville

YUL - SDF

YULSDF

Montreal Pierre Elliott Trudeau Intl

Wed 6/17

2:40 pm-8:58 pm

1 stop6h 18m

Louisville Intl

Mon 6/22

5:59 pm-8:33 am

1 stop14h 34m

$472

TorontoLouisville

YYZ - SDF

YYZSDF

Toronto Pearson Intl

Mon 8/3

9:30 am-7:58 pm

1 stop10h 28m

Louisville Intl

Fri 8/7

9:10 pm-2:05 pm

1 stop16h 55m

$474

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 December, then departing from Region of Ontario during the month March is also very affordable. Most momondo users find prices during this month for around $308.

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

You could potentially save up to 46% 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 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
United AirlinesPriceFrom $296Free CancellationRating
7.4
9,749 reviews
Search United Airlines flights
American AirlinesPriceFrom $331Free CancellationRating
7.1
11,631 reviews
Search American Airlines flights

Traveling to a place near Louisville?

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

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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