What airlines fly to Region of Ontario?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Region of Ontario from Louisville according to our data. Air Canada is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 4 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

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

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

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?

The number of operators available for flights from Louisville Intl Airport to Ontario is 3 as of August 2026.

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.

$165 Cheap Flights from Louisville to Ontario in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to Ontario

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:43 am - 10:55 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

12h 12m1 stop Fort Lauderdale

9:20 am - 11:48 amYYZ Toronto Pearson Intl-SDF Louisville Intl

26h 28m1 stop Fort Lauderdale

$352Multiple Airlines

Wed, Nov 25 - Sun, Dec 6

9:09 pm - 4:15 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

19h 06m1 stop Tampa

5:15 pm - 8:04 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

26h 49m1 stop Fort Lauderdale

$357Multiple Airlines

Sun, Nov 8 - Thu, Nov 12

10:43 am - 10:55 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

12h 12m1 stop Fort Lauderdale

12:20 pm - 8:29 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

8h 09m1 stop Tampa

$377Multiple Airlines

Wed, Nov 25 - Thu, Dec 3

6:29 am - 5:44 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

11h 15m1 stop Chicago O'Hare Intl

7:29 am - 4:23 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

8h 54m1 stop Chicago O'Hare Intl

$484American Airlines

Sat, Oct 10 - Sat, Oct 17

6:29 am - 5:44 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

11h 15m1 stop Chicago O'Hare Intl

7:29 am - 4:23 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

8h 54m1 stop Chicago O'Hare Intl

$485American Airlines

Sat, Oct 10 - Sat, Oct 17

11:08 am - 5:15 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

6h 07m1 stop Philadelphia

6:30 am - 5:29 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

10h 59m1 stop Chicago O'Hare Intl

$499American Airlines

Sat, Sep 12 - Sat, Sep 19

6:00 am - 10:23 amSDF Louisville Intl-YYZ Toronto Pearson Intl

4h 23m1 stop Atlanta Hartsfield-Jackson

6:34 pm - 11:59 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

5h 25m1 stop Atlanta Hartsfield-Jackson

$521Delta

Tue, Sep 8 - Sat, Sep 19

7:05 am - 12:19 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

5h 14m1 stop Atlanta Hartsfield-Jackson

6:34 pm - 11:59 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

5h 25m1 stop Atlanta Hartsfield-Jackson

$521Delta

Wed, Sep 9 - Sat, Sep 19

11:00 am - 4:38 pmSDF Louisville Intl-YOW Ottawa

5h 38m1 stop Newark

5:57 pm - 10:59 pmYOW Ottawa-SDF Louisville Intl

5h 02m1 stop Newark

$630United Airlines

Fri, Sep 18 - Sun, Sep 20

6:00 am - 9:56 amSDF Louisville Intl-YOW Ottawa

3h 56m1 stop Washington, D.C. Dulles Intl

6:00 am - 10:18 amYOW Ottawa-SDF Louisville Intl

4h 18m1 stop Washington, D.C. Dulles Intl

$630United Airlines

Fri, Sep 18 - Sun, Sep 20

Cheap last minute flights

Enter your travel dates to find the best prices.

8:05 am - 1:41 pmSDF Louisville Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 36m1 stop Atlanta Hartsfield-Jackson

5:10 pm - 9:54 amYUL Montreal Pierre Elliott Trudeau Intl-SDF Louisville Intl

16h 44m1 stop Detroit Metropolitan Wayne County

$630WestJet

Tue, Sep 1 - Tue, Sep 1

7:05 am - 4:45 pmSDF Louisville Intl-YUL Montreal Pierre Elliott Trudeau Intl

9h 40m2 stops Atlanta Hartsfield-Jackson Toronto Pearson Intl

7:44 pm - 1:27 pmYUL Montreal Pierre Elliott Trudeau Intl-SDF Louisville Intl

17h 43m1 stop New York LaGuardia

$702WestJet

Wed, Sep 2 - Wed, Sep 2

6:00 am - 4:45 pmSDF Louisville Intl-YUL Montreal Pierre Elliott Trudeau Intl

10h 45m2 stops Atlanta Hartsfield-Jackson Toronto Pearson Intl

8:00 pm - 7:30 pmYUL Montreal Pierre Elliott Trudeau Intl-SDF Louisville Intl

23h 30m2 stops Calgary Atlanta Hartsfield-Jackson

$703WestJet

Wed, Sep 2 - Wed, Sep 2

7:05 am - 4:45 pmSDF Louisville Intl-YUL Montreal Pierre Elliott Trudeau Intl

9h 40m2 stops Atlanta Hartsfield-Jackson Toronto Pearson Intl

8:00 pm - 7:31 pmYUL Montreal Pierre Elliott Trudeau Intl-SDF Louisville Intl

23h 31m2 stops Calgary Atlanta Hartsfield-Jackson

$703WestJet

Tue, Sep 1 - Tue, Sep 1

5:50 pm - 11:52 pmSDF Louisville Intl-YUL Montreal Pierre Elliott Trudeau Intl

6h 02m1 stop Atlanta Hartsfield-Jackson

12:47 pm - 5:19 pmYUL Montreal Pierre Elliott Trudeau Intl-SDF Louisville Intl

4h 32m1 stop Detroit Metropolitan Wayne County

$717WestJet

Tue, Sep 1 - Thu, Sep 3

7:05 am - 7:05 amSDF Louisville Intl-YUL Montreal Pierre Elliott Trudeau Intl

24h 00m2 stops Atlanta Hartsfield-Jackson Calgary

12:47 pm - 9:19 pmYUL Montreal Pierre Elliott Trudeau Intl-SDF Louisville Intl

8h 32m1 stop Detroit Metropolitan Wayne County

$723WestJet

Tue, Sep 1 - Thu, Sep 3

3:25 pm - 7:05 amSDF Louisville Intl-YUL Montreal Pierre Elliott Trudeau Intl

15h 40m2 stops Atlanta Hartsfield-Jackson Calgary

6:45 am - 9:19 pmYUL Montreal Pierre Elliott Trudeau Intl-SDF Louisville Intl

14h 34m2 stops Toronto Pearson Intl Detroit Metropolitan Wayne County

$733WestJet

Tue, Sep 1 - Thu, Sep 3

7:05 am - 1:41 pmSDF Louisville Intl-YUL Montreal Pierre Elliott Trudeau Intl

6h 36m1 stop Atlanta Hartsfield-Jackson

8:00 pm - 10:32 amYUL Montreal Pierre Elliott Trudeau Intl-SDF Louisville Intl

14h 32m2 stops Calgary Atlanta Hartsfield-Jackson

$741WestJet

Tue, Sep 1 - Tue, Sep 1

7:10 am - 11:59 amSDF Louisville Intl-YUL Montreal Pierre Elliott Trudeau Intl

4h 49m1 stop Chicago O'Hare Intl

3:25 pm - 10:59 pmYUL Montreal Pierre Elliott Trudeau Intl-SDF Louisville Intl

7h 34m1 stop Newark

$775United Airlines

Wed, Sep 2 - Wed, Sep 2

7:55 am - 11:19 amSDF Louisville Intl-YYZ Toronto Pearson Intl

3h 24m1 stop Detroit Metropolitan Wayne County

6:10 am - 9:54 amYYZ Toronto Pearson Intl-SDF Louisville Intl

3h 44m1 stop Detroit Metropolitan Wayne County

$881WestJet

Tue, Sep 1 - Wed, Sep 2

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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 9

SDF5:15 amLouisville Intl

4h 39m

1 stop

YYZ9:54 amToronto Pearson Intl

Sep 9

YYZ1:00 pmToronto Pearson Intl

6h 07m

1 stop

SDF7:07 pmLouisville Intl

$478

United Airlines

Sep 8

SDF6:10 pmLouisville Intl

15h 09m

1 stop

YYZ9:19 amToronto Pearson Intl

Sep 9

YYZ1:00 pmToronto Pearson Intl

6h 07m

1 stop

SDF7:07 pmLouisville Intl

$499

United Airlines

Sep 8

SDF10:40 amLouisville Intl

8h 20m

1 stop

YYZ7:00 pmToronto Pearson Intl

Sep 15

YYZ1:00 pmToronto Pearson Intl

6h 07m

1 stop

SDF7:07 pmLouisville Intl

$515

American Airlines flights from Louisville to Region of Ontario

Our best American Airlines deals on Louisville to Region of Ontario flight tickets

American Airlines

Sep 10

SDF11:10 amLouisville Intl

5h 35m

1 stop

YYZ4:45 pmToronto Pearson Intl

Sep 18

YYZ7:15 pmToronto Pearson Intl

14h 28m

1 stop

SDF9:43 amLouisville Intl

$516

American Airlines

Sep 10

SDF11:08 amLouisville Intl

4h 30m

1 stop

YYZ3:38 pmToronto Pearson Intl

Sep 14

YYZ7:15 pmToronto Pearson Intl

14h 28m

1 stop

SDF9:43 amLouisville Intl

$559

American Airlines

Oct 20

SDF6:07 pmLouisville Intl

17h 37m

1 stop

YUL11:44 amMontreal Pierre Elliott Trudeau Intl

Oct 29

YUL5:34 pmMontreal Pierre Elliott Trudeau Intl

15h 58m

1 stop

SDF9:32 amLouisville Intl

$595

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Wed 11/25

10:43 am-10:55 pm

1 stop12h 12m

Toronto Pearson Intl

Sun 12/6

9:20 am-11:48 am

1 stop26h 28m

$352

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Sun 11/8

9:09 pm-4:15 pm

1 stop19h 06m

Toronto Pearson Intl

Thu 11/12

5:15 pm-8:04 pm

1 stop26h 49m

$357

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Wed 11/25

10:43 am-10:55 pm

1 stop12h 12m

Toronto Pearson Intl

Thu 12/3

12:20 pm-8:29 pm

1 stop8h 09m

$377

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Sat 10/10

6:29 am-5:44 pm

1 stop11h 15m

Toronto Pearson Intl

Sat 10/17

7:29 am-4:23 pm

1 stop8h 54m

$484

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Sat 10/10

6:29 am-5:44 pm

1 stop11h 15m

Toronto Pearson Intl

Sat 10/17

7:29 am-4:23 pm

1 stop8h 54m

$485

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Sat 9/12

11:08 am-5:15 pm

1 stop6h 07m

Toronto Pearson Intl

Sat 9/19

6:30 am-5:29 pm

1 stop10h 59m

$499

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Tue 9/8

6:00 am-10:23 am

1 stop4h 23m

Toronto Pearson Intl

Sat 9/19

6:34 pm-11:59 pm

1 stop5h 25m

$521

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Wed 9/9

7:05 am-12:19 pm

1 stop5h 14m

Toronto Pearson Intl

Sat 9/19

6:34 pm-11:59 pm

1 stop5h 25m

$521

LouisvilleOttawa

SDF Louisville Intl - YOW Ottawa

SDFYOW

Louisville Intl

Fri 9/18

11:00 am-4:38 pm

1 stop5h 38m

Ottawa

Sun 9/20

5:57 pm-10:59 pm

1 stop5h 02m

$630

Quickest round-trip

LouisvilleOttawa

SDF Louisville Intl - YOW Ottawa

SDFYOW

Louisville Intl

Fri 9/18

6:00 am-9:56 am

1 stop3h 56m

Ottawa

Sun 9/20

6:00 am-10:18 am

1 stop4h 18m

$630

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Region of Ontario?

The month of January is, on average, the cheapest month to fly to Region of Ontario from Louisville, with most prices found around $516. If you aren’t able to travel during the month of January, then book flights to Region of Ontario from Louisville during May instead. Flights to Region of Ontario in May, while not as cheap as those in January, still average around $561.

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

You could potentially save up to 55% on your flight if you consider stops on a Louisville to Region of Ontario flight.

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	$165
Fastest flight time	4h 03m
Direct flights	None

The best one-way flight to Region of Ontario from Louisville in the past 72 hours is $165. The best round-trip flight deal from Louisville to Region of Ontario found on momondo in the last 72 hours is $352.

The fastest flight from Louisville to Region of Ontario takes 4h 03m

There are no direct flights from Louisville to Region of Ontario. There are no popular flight routes from Louisville to Region of Ontario.

Search flight deals

Frequently asked questions about flying from Louisville to Ontario

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?
The number of operators available for flights from Louisville Intl Airport to Ontario is 3 as of August 2026.
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
Delta	PriceFrom $240	Free Cancellation	Rating 7.8 8,536 reviews	Search Delta flights
United Airlines	PriceFrom $341	Free Cancellation	Rating 7.4 10,136 reviews	Search United Airlines flights
American Airlines	PriceFrom $446	Free Cancellation	Rating 7.1 12,022 reviews	Search American Airlines 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.