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 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.

$137 Cheap Flights from Louisville to Ontario in 2026

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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.

9:00 am - 9:35 pm

SDF

YOW

12h 35m

1 stop

5:20 pm - 11:59 pm

YOW

SDF

6h 39m

1 stop

$332United Airlines

Wed, Jun 3 - Sat, Jun 6

7:10 am - 9:35 pm

SDF

YOW

14h 25m

1 stop

5:20 pm - 11:59 pm

YOW

SDF

6h 39m

1 stop

$334United Airlines

Wed, Jun 3 - Sat, Jun 6

6:00 am - 2:33 pm

SDF

YYZ

8h 33m

1 stop

7:20 am - 6:26 pm

YYZ

SDF

11h 06m

1 stop

$394American Airlines

Wed, May 20 - Wed, May 27

12:24 pm - 2:05 pm

SDF

YYZ

25h 41m

1 stop

9:50 am - 6:15 pm

YYZ

SDF

32h 25m

2 stops

$398Multiple Airlines

Wed, May 20 - Wed, May 27

10:33 am - 8:55 pm

SDF

YYZ

10h 22m

1 stop

9:50 am - 8:51 am

YYZ

SDF

23h 01m

1 stop

$412Multiple Airlines

Thu, May 7 - Wed, May 20

5:20 am - 1:05 pm

SDF

YOW

7h 45m

2 stops

12:15 pm - 7:18 pm

YOW

SDF

7h 03m

2 stops

$436Air Canada

Wed, Jun 3 - Sat, Jun 6

7:01 pm - 11:44 am

SDF

YUL

16h 43m

1 stop

12:30 pm - 11:48 pm

YUL

SDF

11h 18m

1 stop

$454American Airlines

Sat, Apr 18 - Tue, Apr 21

6:00 am - 8:39 am

SDF

YUL

26h 39m

1 stop

7:00 am - 11:53 am

YUL

SDF

4h 53m

1 stop

$538Delta

Thu, Jun 25 - Sat, Jul 4

8:11 am - 5:38 pm

SDF

YUL

9h 27m

1 stop

7:44 pm - 10:53 am

YUL

SDF

15h 09m

1 stop

$540Delta

Wed, Jul 22 - Tue, Jul 28

10:06 am - 9:38 pm

SDF

YXU

11h 32m

2 stops

5:10 am - 1:22 pm

YXU

SDF

8h 12m

2 stops

$879Air Canada

Sun, May 10 - Sun, May 17

American Airlines flights from Louisville to Region of Ontario

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

American Airlines

May 20

SDF6:00 amLouisville Intl

8h 33m

1 stop

YYZ2:33 pmToronto Pearson Intl

May 27

YYZ7:20 amToronto Pearson Intl

11h 06m

1 stop

SDF6:26 pmLouisville Intl

$394

American Airlines

Apr 18

SDF7:01 pmLouisville Intl

16h 43m

1 stop

YUL11:44 amMontreal Pierre Elliott Trudeau Intl

Apr 21

YUL12:30 pmMontreal Pierre Elliott Trudeau Intl

11h 18m

1 stop

SDF11:48 pmLouisville Intl

$454

American Airlines

May 9

SDF8:36 amLouisville Intl

9h 04m

1 stop

YYZ5:40 pmToronto Pearson Intl

May 16

YYZ1:15 pmToronto Pearson Intl

11h 08m

1 stop

SDF12:23 amLouisville Intl

$459

Delta flights from Louisville to Region of Ontario

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

Delta

May 22

SDF7:50 amLouisville Intl

7h 24m

1 stop

YYZ3:14 pmToronto Pearson Intl

May 24

YYZ7:55 amToronto Pearson Intl

8h 49m

1 stop

SDF4:44 pmLouisville Intl

$491

Delta

May 7

SDF2:40 pmLouisville Intl

9h 01m

1 stop

YYZ11:41 pmToronto Pearson Intl

May 12

YYZ7:55 amToronto Pearson Intl

8h 44m

1 stop

SDF4:39 pmLouisville Intl

$496

Delta

Apr 23

SDF6:55 amLouisville Intl

9h 20m

1 stop

YYZ4:15 pmToronto Pearson Intl

Apr 25

YYZ2:15 pmToronto Pearson Intl

7h 05m

1 stop

SDF9:20 pmLouisville Intl

$508

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Wed 6/3

9:00 am-9:35 pm

1 stop12h 35m

Ottawa

Sat 6/6

5:20 pm-11:59 pm

1 stop6h 39m

$332

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Wed 6/3

7:10 am-9:35 pm

1 stop14h 25m

Ottawa

Sat 6/6

5:20 pm-11:59 pm

1 stop6h 39m

$334

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Wed 5/20

6:00 am-2:33 pm

1 stop8h 33m

Toronto Pearson Intl

Wed 5/27

7:20 am-6:26 pm

1 stop11h 06m

$394

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Wed 5/20

12:24 pm-2:05 pm

1 stop25h 41m

Toronto Pearson Intl

Wed 5/27

9:50 am-6:15 pm

2 stops32h 25m

$398

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Thu 5/7

10:33 am-8:55 pm

1 stop10h 22m

Toronto Pearson Intl

Wed 5/20

9:50 am-8:51 am

1 stop23h 01m

$412

Quickest round-trip

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Wed 6/3

5:20 am-1:05 pm

2 stops7h 45m

Ottawa

Sat 6/6

12:15 pm-7:18 pm

2 stops7h 03m

$436

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sat 4/18

7:01 pm-11:44 am

1 stop16h 43m

Montreal Pierre Elliott Trudeau Intl

Tue 4/21

12:30 pm-11:48 pm

1 stop11h 18m

$454

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Thu 6/25

6:00 am-8:39 am

1 stop26h 39m

Montreal Pierre Elliott Trudeau Intl

Sat 7/4

7:00 am-11:53 am

1 stop4h 53m

$538

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Wed 7/22

8:11 am-5:38 pm

1 stop9h 27m

Montreal Pierre Elliott Trudeau Intl

Tue 7/28

7:44 pm-10:53 am

1 stop15h 09m

$540

LouisvilleLondon

SDF - YXU

SDFYXU

Louisville Intl

Sun 5/10

10:06 am-9:38 pm

2 stops11h 32m

London

Sun 5/17

5:10 am-1:22 pm

2 stops8h 12m

$879

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

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

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

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

Fastest flight time	4h 19m
Direct flights	None

The fastest flight from Louisville to Region of Ontario takes 4h 19m

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

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 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.

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.