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

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

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 51% 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 3 as of July 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.

$180 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.

9:28 pm - 8:40 pm

SDF

YYZ

23h 12m

1 stop

9:30 am - 10:32 am

YYZ

SDF

25h 02m

2 stops

$379Multiple Airlines

Fri, Aug 7 - Wed, Aug 12

9:10 pm - 2:05 pm

SDF

YYZ

16h 55m

1 stop

4:45 pm - 6:15 pm

YYZ

SDF

25h 30m

2 stops

$394Multiple Airlines

Fri, Aug 14 - Wed, Aug 19

2:47 pm - 11:26 pm

SDF

YYZ

8h 39m

1 stop

7:15 pm - 9:43 am

YYZ

SDF

14h 28m

1 stop

$490American Airlines

Tue, Sep 29 - Fri, Oct 2

10:05 am - 2:40 pm

SDF

YUL

4h 35m

1 stop

3:25 pm - 8:25 pm

YUL

SDF

5h 00m

1 stop

$508United Airlines

Wed, Jul 29 - Wed, Aug 5

7:37 am - 3:19 pm

SDF

YUL

7h 42m

1 stop

1:05 pm - 5:36 pm

YUL

SDF

4h 31m

1 stop

$509American Airlines

Thu, Jul 16 - Wed, Jul 22

10:05 am - 2:40 pm

SDF

YUL

4h 35m

1 stop

2:20 pm - 7:15 pm

YUL

SDF

4h 55m

1 stop

$519United Airlines

Tue, Aug 25 - Wed, Aug 26

5:28 pm - 11:25 pm

SDF

YUL

5h 57m

1 stop

12:47 pm - 9:12 pm

YUL

SDF

8h 25m

1 stop

$520Delta

Mon, Jul 20 - Fri, Jul 24

6:00 am - 12:01 pm

SDF

YUL

6h 01m

2 stops

1:10 pm - 8:25 pm

YUL

SDF

7h 15m

1 stop

$543Air Canada

Thu, Jul 16 - Wed, Jul 22

7:10 am - 1:59 pm

SDF

YOW

6h 49m

1 stop

9:55 am - 8:36 pm

YOW

SDF

10h 41m

2 stops

$694Air Canada

Sat, Aug 22 - Wed, Aug 26

10:00 am - 12:20 am

SDF

YOW

14h 20m

2 stops

6:55 am - 4:47 pm

YOW

SDF

9h 52m

2 stops

$739Delta

Thu, Jul 16 - Wed, Jul 22

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WestJet flights from Louisville to Region of Ontario

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

WestJet

Sep 19

SDF7:55 amLouisville Intl

8h 24m

1 stop

YUL4:19 pmMontreal Pierre Elliott Trudeau Intl

Sep 23

YUL6:00 amMontreal Pierre Elliott Trudeau Intl

3h 52m

1 stop

SDF9:52 amLouisville Intl

$561

WestJet

Aug 5

SDF3:25 pmLouisville Intl

15h 40m

2 stops

YUL7:05 amMontreal Pierre Elliott Trudeau Intl

Aug 8

YUL9:30 amMontreal Pierre Elliott Trudeau Intl

9h 21m

1 stop

SDF6:51 pmLouisville Intl

$580

WestJet

Sep 2

SDF3:25 pmLouisville Intl

15h 40m

2 stops

YUL7:05 amMontreal Pierre Elliott Trudeau Intl

Sep 7

YUL8:00 pmMontreal Pierre Elliott Trudeau Intl

16h 20m

2 stops

SDF12:20 pmLouisville Intl

$602

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 29

SDF2:47 pmLouisville Intl

8h 39m

1 stop

YYZ11:26 pmToronto Pearson Intl

Oct 2

YYZ7:15 pmToronto Pearson Intl

14h 28m

1 stop

SDF9:43 amLouisville Intl

$490

American Airlines

Jul 16

SDF7:37 amLouisville Intl

7h 42m

1 stop

YUL3:19 pmMontreal Pierre Elliott Trudeau Intl

Jul 22

YUL1:05 pmMontreal Pierre Elliott Trudeau Intl

4h 31m

1 stop

SDF5:36 pmLouisville Intl

$509

American Airlines

Aug 4

SDF6:48 amLouisville Intl

7h 46m

1 stop

YYZ2:34 pmToronto Pearson Intl

Aug 11

YYZ7:20 amToronto Pearson Intl

14h 05m

1 stop

SDF9:25 pmLouisville Intl

$516

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 8/7

9:28 pm-8:40 pm

1 stop23h 12m

Toronto Pearson Intl

Wed 8/12

9:30 am-10:32 am

2 stops25h 02m

$379

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 8/14

9:10 pm-2:05 pm

1 stop16h 55m

Toronto Pearson Intl

Wed 8/19

4:45 pm-6:15 pm

2 stops25h 30m

$394

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Tue 9/29

2:47 pm-11:26 pm

1 stop8h 39m

Toronto Pearson Intl

Fri 10/2

7:15 pm-9:43 am

1 stop14h 28m

$490

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Wed 7/29

10:05 am-2:40 pm

1 stop4h 35m

Montreal Pierre Elliott Trudeau Intl

Wed 8/5

3:25 pm-8:25 pm

1 stop5h 00m

$508

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Thu 7/16

7:37 am-3:19 pm

1 stop7h 42m

Montreal Pierre Elliott Trudeau Intl

Wed 7/22

1:05 pm-5:36 pm

1 stop4h 31m

$509

Quickest round-trip

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Tue 8/25

10:05 am-2:40 pm

1 stop4h 35m

Montreal Pierre Elliott Trudeau Intl

Wed 8/26

2:20 pm-7:15 pm

1 stop4h 55m

$519

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Mon 7/20

5:28 pm-11:25 pm

1 stop5h 57m

Montreal Pierre Elliott Trudeau Intl

Fri 7/24

12:47 pm-9:12 pm

1 stop8h 25m

$520

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Thu 7/16

6:00 am-12:01 pm

2 stops6h 01m

Montreal Pierre Elliott Trudeau Intl

Wed 7/22

1:10 pm-8:25 pm

1 stop7h 15m

$543

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Sat 8/22

7:10 am-1:59 pm

1 stop6h 49m

Ottawa

Wed 8/26

9:55 am-8:36 pm

2 stops10h 41m

$694

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Thu 7/16

10:00 am-12:20 am

2 stops14h 20m

Ottawa

Wed 7/22

6:55 am-4:47 pm

2 stops9h 52m

$739

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 June is, on average, the cheapest month to fly to Region of Ontario from Louisville, with most prices found around $240. If you aren’t able to travel during the month of June, 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 June, still average around $258.

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

Fastest flight time	4h 03m
Direct flights	None

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 July 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 8,452 reviews	Search Delta flights
United Airlines	PriceFrom $341	Free Cancellation	Rating 7.4 9,909 reviews	Search United Airlines flights
American Airlines	PriceFrom $446	Free Cancellation	Rating 7.1 11,766 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.