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

American Airlines is the most popular carrier operating from Louisville Intl to Ontario

What airlines fly to Region of Ontario?

United Airlines, Air Canada and American Airlines are the top three most popular airlines that fly to Region of Ontario from Louisville according to our data. United Airlines is the first choice among our users, with 47% 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.

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 2 as of October 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.

$170 Cheap Flights from Louisville to Ontario in 2026/27

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.

6:08 pm - 5:10 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

23h 02m1 stop Fort Lauderdale

9:20 am - 5:18 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

7h 58m1 stop Fort Lauderdale

$364Multiple Airlines

Wed, Mar 10 - Wed, Mar 17

3:50 pm - 5:40 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

25h 50m1 stop Tampa St. Petersburg

4:50 pm - 5:09 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

24h 19m1 stop Tampa

$369Multiple Airlines

Mon, Feb 1 - Sun, Feb 7

3:50 pm - 5:40 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

25h 50m1 stop Tampa St. Petersburg

9:15 am - 5:09 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

7h 54m1 stop Tampa

$378Multiple Airlines

Mon, Feb 1 - Fri, Feb 5

3:50 pm - 5:40 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

25h 50m1 stop Tampa St. Petersburg

9:15 am - 5:09 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

7h 54m1 stop Tampa

$384Multiple Airlines

Mon, Feb 1 - Mon, Feb 8

6:30 am - 4:34 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

10h 04m1 stop Washington, D.C. Reagan-National

12:15 pm - 5:50 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

29h 35m1 stop Washington, D.C. Reagan-National

$456American Airlines

Thu, Nov 12 - Thu, Nov 26

6:30 am - 4:34 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

10h 04m1 stop Washington, D.C. Reagan-National

12:15 pm - 12:43 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

24h 28m2 stops Washington, D.C. Reagan-National Chicago O'Hare Intl

$466American Airlines

Thu, Nov 12 - Thu, Nov 26

10:13 am - 11:41 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

13h 28m1 stop Chicago O'Hare Intl

6:23 pm - 9:22 amYYZ Toronto Pearson Intl-SDF Louisville Intl

14h 59m1 stop Chicago O'Hare Intl

$491American Airlines

Wed, Dec 9 - Fri, Dec 11

7:20 am - 3:19 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

7h 59m1 stop Detroit Metropolitan Wayne County

6:08 pm - 9:41 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

3h 33m1 stop Detroit Metropolitan Wayne County

$623Delta

Tue, Apr 6 - Wed, Apr 7

7:20 am - 3:14 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

7h 54m1 stop Detroit Metropolitan Wayne County

4:04 pm - 9:23 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

5h 19m1 stop Detroit Metropolitan Wayne County

$623Delta

Sat, Dec 26 - Tue, Dec 29

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

5h 14m1 stop Atlanta Hartsfield-Jackson

1:34 pm - 7:10 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

5h 36m1 stop Atlanta Hartsfield-Jackson

$623Delta

Tue, Nov 3 - Wed, Nov 4

Cheap last minute flights

Enter your travel dates to find the best prices.

6:07 pm - 11:29 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

5h 22m1 stop Chicago O'Hare Intl

7:09 am - 12:43 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

5h 34m1 stop Chicago O'Hare Intl

$536Multiple Airlines

Tue, Oct 27 - Tue, Nov 3

6:29 am - 2:33 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

8h 04m1 stop Chicago O'Hare Intl

1:15 pm - 9:35 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

8h 20m1 stop Chicago O'Hare Intl

$663Multiple Airlines

Sat, Oct 24 - Wed, Oct 28

7:08 pm - 3:00 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

19h 52m1 stop Fort Lauderdale

6:33 pm - 7:44 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

25h 11m2 stops Atlanta Hartsfield-Jackson Sarasota Bradenton Intl

$723Multiple Airlines

Mon, Oct 26 - Wed, Oct 28

6:29 am - 12:34 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

6h 05m1 stop Chicago O'Hare Intl

7:29 am - 5:05 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

9h 36m1 stop Chicago O'Hare Intl

$751Multiple Airlines

Tue, Oct 27 - Thu, Oct 29

7:08 pm - 3:00 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

19h 52m1 stop Fort Lauderdale

6:00 am - 9:59 amYYZ Toronto Pearson Intl-SDF Louisville Intl

3h 59m1 stop Detroit Metropolitan Wayne County

$752Multiple Airlines

Mon, Oct 26 - Wed, Oct 28

6:29 am - 10:59 amSDF Louisville Intl-YYZ Toronto Pearson Intl

4h 30m1 stop Chicago O'Hare Intl

6:15 am - 2:18 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

8h 03m1 stop Philadelphia

$782American Airlines

Sat, Oct 24 - Sat, Oct 31

10:55 am - 3:20 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

52h 25m2 stops Raleigh-Durham Fort Lauderdale

11:38 am - 4:49 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

5h 11m1 stop Atlanta Hartsfield-Jackson

$819Multiple Airlines

Sat, Oct 24 - Wed, Oct 28

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

5h 14m1 stop Atlanta Hartsfield-Jackson

6:30 am - 9:02 amYYZ Toronto Pearson Intl-SDF Louisville Intl

50h 32m2 stops Orlando Charleston

$840Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

10:39 am - 5:19 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

6h 40m1 stop Detroit Metropolitan Wayne County

7:15 am - 3:26 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

32h 11m2 stops Fort Myers SW Florida Intl Raleigh-Durham

$880Multiple Airlines

Tue, Oct 27 - Tue, Nov 3

5:59 pm - 11:36 pmSDF Louisville Intl-YYZ Toronto Pearson Intl

5h 37m1 stop New York LaGuardia

7:35 am - 8:29 pmYYZ Toronto Pearson Intl-SDF Louisville Intl

12h 54m2 stops Fort Lauderdale Tampa

$937Multiple Airlines

Tue, Oct 27 - Thu, Oct 29

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Delta flights from Louisville to Region of Ontario

Our best Delta deals on Louisville to Region of Ontario flight tickets

Delta

Oct 31

SDF7:05 amLouisville Intl

5h 14m

1 stop

YYZ12:19 pmToronto Pearson Intl

Nov 4

YYZ6:00 amToronto Pearson Intl

7h 40m

1 stop

SDF1:40 pmLouisville Intl

$607

Delta

Nov 3

SDF7:05 amLouisville Intl

5h 14m

1 stop

YYZ12:19 pmToronto Pearson Intl

Nov 4

YYZ1:34 pmToronto Pearson Intl

5h 36m

1 stop

SDF7:10 pmLouisville Intl

$623

Delta

Oct 31

SDF7:05 amLouisville Intl

5h 14m

1 stop

YYZ12:19 pmToronto Pearson Intl

Nov 2

YYZ7:55 amToronto Pearson Intl

6h 04m

1 stop

SDF1:59 pmLouisville Intl

$626

United Airlines flights from Louisville to Region of Ontario

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

United Airlines

Nov 2

SDF9:02 amLouisville Intl

5h 01m

1 stop

YYZ2:03 pmToronto Pearson Intl

Nov 2

YYZ5:55 pmToronto Pearson Intl

4h 35m

1 stop

SDF10:30 pmLouisville Intl

$826

United Airlines

Mar 20

SDF5:50 amLouisville Intl

15h 59m

2 stops

YXU9:49 pmLondon

Mar 23

YXU5:30 amLondon

7h 53m

2 stops

SDF1:23 pmLouisville Intl

$1,072

United Airlines

Oct 31

SDF5:10 amLouisville Intl

4h 37m

1 stop

YYZ9:47 amToronto Pearson Intl

Oct 31

YYZ12:00 pmToronto Pearson Intl

11h 30m

2 stops

SDF11:30 pmLouisville Intl

$1,193

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Wed 3/10

6:08 pm-5:10 pm

1 stop23h 02m

Toronto Pearson Intl

Wed 3/17

9:20 am-5:18 pm

1 stop7h 58m

$364

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Mon 2/1

3:50 pm-5:40 pm

1 stop25h 50m

Toronto Pearson Intl

Sun 2/7

4:50 pm-5:09 pm

1 stop24h 19m

$369

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Mon 2/1

3:50 pm-5:40 pm

1 stop25h 50m

Toronto Pearson Intl

Fri 2/5

9:15 am-5:09 pm

1 stop7h 54m

$378

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Mon 2/1

3:50 pm-5:40 pm

1 stop25h 50m

Toronto Pearson Intl

Mon 2/8

9:15 am-5:09 pm

1 stop7h 54m

$384

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Thu 11/12

6:30 am-4:34 pm

1 stop10h 04m

Toronto Pearson Intl

Thu 11/26

12:15 pm-5:50 pm

1 stop29h 35m

$456

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Thu 11/12

6:30 am-4:34 pm

1 stop10h 04m

Toronto Pearson Intl

Thu 11/26

12:15 pm-12:43 pm

2 stops24h 28m

$466

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Wed 12/9

10:13 am-11:41 pm

1 stop13h 28m

Toronto Pearson Intl

Fri 12/11

6:23 pm-9:22 am

1 stop14h 59m

$491

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Tue 4/6

7:20 am-3:19 pm

1 stop7h 59m

Toronto Pearson Intl

Wed 4/7

6:08 pm-9:41 pm

1 stop3h 33m

$623

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Sat 12/26

7:20 am-3:14 pm

1 stop7h 54m

Toronto Pearson Intl

Tue 12/29

4:04 pm-9:23 pm

1 stop5h 19m

$623

Quickest round-trip

LouisvilleToronto

SDF Louisville Intl - YYZ Toronto Pearson Intl

SDFYYZ

Louisville Intl

Tue 11/3

7:05 am-12:19 pm

1 stop5h 14m

Toronto Pearson Intl

Wed 11/4

1:34 pm-7:10 pm

1 stop5h 36m

$623

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 29% 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	$170
Fastest flight time	4h 18m
Direct flights	None

The best one-way flight to Region of Ontario from Louisville in the past 72 hours is $170. The best round-trip flight deal from Louisville to Region of Ontario found on momondo in the last 72 hours is $364.

The fastest flight from Louisville to Region of Ontario takes 4h 18m

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 2 as of October 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 8,661 reviews	Search Delta flights
United Airlines	PriceFrom $341	Free Cancellation	Rating 7.3 10,404 reviews	Search United Airlines flights
American Airlines	PriceFrom $511	Free Cancellation	Rating 7.0 12,186 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.