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Cheap flights from Louisville to Ontario from $128

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Ontario departing on 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Louisville to Ontario

Cheap round-trip flights

Logo
11:17 am - 11:52 pmSDF-YYZ
12h 35m1 stop
Logo
6:30 am - 10:28 pmYYZ-SDF
15h 58m1 stop
$292
Find Deal
Mon, Sep 22 - Sun, Sep 28
Logo
9:47 am - 11:52 pmSDF-YYZ
14h 05m1 stop
Logo
6:30 am - 10:28 pmYYZ-SDF
15h 58m1 stop
$307
Find Deal
Fri, Sep 12 - Sun, Sep 14
Logo
10:14 am - 10:40 pmSDF-YYZ
12h 26m1 stop
Logo
6:30 am - 10:28 pmYYZ-SDF
15h 58m1 stop
$314
Find Deal
Sat, Sep 13 - Sun, Sep 14
American Airlines Logo
5:20 pm - 3:11 pmSDF-YUL
21h 51m1 stop
American Airlines Logo
7:14 am - 8:19 pmYUL-SDF
13h 05m2 stops
$350American Airlines
Find Deal
Sat, Nov 8 - Tue, Nov 11
American Airlines Logo
7:29 am - 10:40 pmSDF-YUL
15h 11m2 stops
American Airlines Logo
7:30 am - 8:19 pmYUL-SDF
12h 49m2 stops
$355American Airlines
Find Deal
Sat, Nov 8 - Tue, Nov 11
United Airlines Logo
9:05 am - 6:33 pmSDF-YYZ
9h 28m1 stop
United Airlines Logo
12:20 pm - 10:24 pmYYZ-SDF
10h 04m1 stop
$448United Airlines
Find Deal
Wed, Sep 10 - Wed, Sep 17
United Airlines Logo
10:55 am - 6:35 pmSDF-YYZ
7h 40m1 stop
United Airlines Logo
11:00 am - 10:24 pmYYZ-SDF
11h 24m1 stop
$491United Airlines
Find Deal
Sat, Aug 23 - Sat, Aug 30
Delta Logo
6:00 am - 5:59 pmSDF-YYZ
11h 59m1 stop
Delta Logo
6:07 pm - 11:56 pmYYZ-SDF
5h 49m1 stop
$619Delta
Find Deal
Tue, Sep 2 - Mon, Sep 8
Delta Logo
10:45 am - 9:48 pmSDF-YUL
11h 03m2 stops
Delta Logo
6:00 am - 5:05 pmYUL-SDF
11h 05m2 stops
$626Delta
Find Deal
Wed, Aug 27 - Sat, Aug 30
WestJet Logo
6:36 am - 9:53 pmSDF-YYZ
15h 17m2 stops
WestJet Logo
6:30 am - 10:53 pmYYZ-SDF
16h 23m1 stop
$709WestJet
Find Deal
Mon, Dec 29 - Wed, Dec 31

United Airlines flights from Louisville to Region of Ontario

Our best United Airlines deals on Louisville to Region of Ontario flight tickets
United Airlines
Sep 10
SDF9:05 amLouisville Intl
9h 28m
1 stop
YYZ6:33 pmToronto Pearson Intl
Sep 17
YYZ12:20 pmToronto Pearson Intl
10h 04m
1 stop
SDF10:24 pmLouisville Intl
$448
Find similar
United Airlines
Aug 23
SDF10:55 amLouisville Intl
7h 40m
1 stop
YYZ6:35 pmToronto Pearson Intl
Aug 30
YYZ11:00 amToronto Pearson Intl
11h 24m
1 stop
SDF10:24 pmLouisville Intl
$491
Find similar
United Airlines
Oct 8
SDF7:00 amLouisville Intl
10h 26m
1 stop
YUL5:26 pmMontreal Pierre Elliott Trudeau Intl
Oct 18
YUL8:20 amMontreal Pierre Elliott Trudeau Intl
10h 13m
1 stop
SDF6:33 pmLouisville Intl
$522
Find similar

WestJet flights from Louisville to Region of Ontario

Our best WestJet deals on Louisville to Region of Ontario flight tickets
WestJet
Aug 7
SDF6:00 amLouisville Intl
14h 54m
2 stops
YYZ8:54 pmToronto Pearson Intl
Aug 8
YYZ6:15 amToronto Pearson Intl
5h 22m
1 stop
SDF11:37 amLouisville Intl
$690
Find similar
WestJet
Dec 29
SDF6:36 amLouisville Intl
15h 17m
2 stops
YYZ9:53 pmToronto Pearson Intl
Dec 31
YYZ6:30 amToronto Pearson Intl
16h 23m
1 stop
SDF10:53 pmLouisville Intl
$709
Find similar
WestJet
Aug 7
SDF10:39 amLouisville Intl
6h 36m
1 stop
YYZ5:15 pmToronto Pearson Intl
Aug 7
YYZ8:00 pmToronto Pearson Intl
13h 54m
2 stops
SDF9:54 amLouisville Intl
$762
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Louisville to Region of 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, momondo users made 832,500 searches. Data last updated July 31, 2025.
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

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Mon 9/22

11:17 am-11:52 pm

1 stop12h 35m

Toronto Pearson Intl

Sun 9/28

6:30 am-10:28 pm

1 stop15h 58m

$292

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 9/12

9:47 am-11:52 pm

1 stop14h 05m

Toronto Pearson Intl

Sun 9/14

6:30 am-10:28 pm

1 stop15h 58m

$307

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Sat 9/13

10:14 am-10:40 pm

1 stop12h 26m

Toronto Pearson Intl

Sun 9/14

6:30 am-10:28 pm

1 stop15h 58m

$314

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sat 11/8

5:20 pm-3:11 pm

1 stop21h 51m

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

7:14 am-8:19 pm

2 stops13h 05m

$350

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sat 11/8

7:29 am-10:40 pm

2 stops15h 11m

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

7:30 am-8:19 pm

2 stops12h 49m

$355

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Wed 9/10

9:05 am-6:33 pm

1 stop9h 28m

Toronto Pearson Intl

Wed 9/17

12:20 pm-10:24 pm

1 stop10h 04m

$448

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Sat 8/23

10:55 am-6:35 pm

1 stop7h 40m

Toronto Pearson Intl

Sat 8/30

11:00 am-10:24 pm

1 stop11h 24m

$491

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Tue 9/2

6:00 am-5:59 pm

1 stop11h 59m

Toronto Pearson Intl

Mon 9/8

6:07 pm-11:56 pm

1 stop5h 49m

$619

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Wed 8/27

10:45 am-9:48 pm

2 stops11h 03m

Montreal Pierre Elliott Trudeau Intl

Sat 8/30

6:00 am-5:05 pm

2 stops11h 05m

$626

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Mon 12/29

6:36 am-9:53 pm

2 stops15h 17m

Toronto Pearson Intl

Wed 12/31

6:30 am-10:53 pm

1 stop16h 23m

$709

Flights are sorted by cheapest round-trip flights first.

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

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

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 day to depart on your flight to Region of Ontario?

According to our data, Tuesday is the cheapest day to fly to Region of Ontario from Louisville. The lowest ticket price found for a Tuesday departure recently was $340. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Louisville to Region of Ontario on a Thursday will generally be more expensive and average around $448. 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 Region of Ontario?

According to our data, the cheapest time of day to fly to Region of Ontario is at noon. momondo users have found flights departing from Louisville to Region of Ontario at noon for as low as $319. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $376.

Cheap Louisville to Region of Ontario flight deals and tips

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

Best Price Found

$128

Fastest flight time

3h 44m

Direct flights

None

Airports in Region of Ontario

3 airports
The best one-way flight to Region of Ontario from Louisville in the past 72 hours is $128. The best round-trip flight deal from Louisville to Region of Ontario found on momondo in the last 72 hours is $292.
The fastest flight from Louisville to Region of Ontario takes 3h 44m
There are no direct flights from Louisville to Region of Ontario. Popular non-direct routes for this connection are Louisville Intl Airport - Ottawa Airport, Louisville Intl Airport - Montreal Pierre Elliott Trudeau Intl Airport and Louisville Intl Airport - Toronto Pearson Intl Airport.
There are 3 airports near Region of Ontario: Ottawa (YOW), Montreal Pierre Elliott Trudeau Intl (YUL), Toronto Pearson Intl (YYZ)
Search flight deals

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

    Prices for flights from Louisville Intl Airport to Ontario are refreshed on a daily basis.

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

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

    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 Louisville Intl Airport to Ontario.

  • What documentation or ID do you need to fly to Ontario?

    The travel and health documents you'll need for your trip to Ontario 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 Ontario. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Louisville to Region of Ontario

Compare and see reviews for airlines that fly from Louisville to Region of Ontario with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom $183Free CancellationRating
7.2
2,978 reviews
Search WestJet flights
United AirlinesPriceFrom $276Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
American AirlinesPriceFrom $276Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $303Free CancellationRating
8.0
7,981 reviews
Search Delta flights

Why use momondo?

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

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 Ontario from Louisville.

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

Yes. momondo enables you to select and highlight flights to Ontario from Louisville with this policy.

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

Once you have performed a search for Louisville to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Louisville to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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