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

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

Prices for flights from Louisville Intl Airport to Ontario are updated daily.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Louisville Intl Airport to Ontario.

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

The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 257 Cheap Flights from Louisville to Ontario in 2026

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.

9:10 p.m. - 2:05 p.m.

SDF

YYZ

16h 55m

1 stop

4:45 p.m. - 6:15 p.m.

YYZ

SDF

25h 30m

2 stops

C$ 559Multiple Airlines

Fri, 14 Aug - Wed, 19 Aug

9:28 p.m. - 8:40 p.m.

SDF

YYZ

23h 12m

1 stop

9:30 a.m. - 10:32 a.m.

YYZ

SDF

25h 02m

2 stops

C$ 565Multiple Airlines

Fri, 7 Aug - Wed, 12 Aug

6:30 a.m. - 1:09 p.m.

SDF

YUL

6h 39m

1 stop

4:55 p.m. - 11:59 p.m.

YUL

SDF

7h 04m

1 stop

C$ 696United Airlines

Sat, 8 Aug - Sat, 8 Aug

7:37 a.m. - 3:19 p.m.

SDF

YUL

7h 42m

1 stop

1:05 p.m. - 5:36 p.m.

YUL

SDF

4h 31m

1 stop

C$ 722American Airlines

Thu, 16 Jul - Wed, 22 Jul

8:16 a.m. - 1:46 p.m.

SDF

YUL

5h 30m

1 stop

5:35 p.m. - 10:35 a.m.

YUL

SDF

17h 00m

1 stop

C$ 732American Airlines

Sat, 15 Aug - Sat, 15 Aug

10:23 a.m. - 5:30 p.m.

SDF

YUL

7h 07m

1 stop

6:10 a.m. - 1:11 p.m.

YUL

SDF

7h 01m

1 stop

C$ 737United Airlines

Sun, 16 Aug - Sun, 23 Aug

2:09 p.m. - 8:39 a.m.

SDF

YUL

18h 30m

1 stop

2:29 p.m. - 8:59 p.m.

YUL

SDF

6h 30m

1 stop

C$ 758Delta

Fri, 7 Aug - Tue, 11 Aug

6:00 a.m. - 12:01 p.m.

SDF

YUL

6h 01m

2 stops

1:10 p.m. - 8:25 p.m.

YUL

SDF

7h 15m

1 stop

C$ 771Air Canada

Thu, 16 Jul - Wed, 22 Jul

2:34 p.m. - 11:30 p.m.

SDF

YUL

8h 56m

1 stop

6:00 a.m. - 1:51 p.m.

YUL

SDF

7h 51m

1 stop

C$ 789Delta

Mon, 3 Aug - Mon, 10 Aug

7:10 a.m. - 1:59 p.m.

SDF

YOW

6h 49m

1 stop

9:55 a.m. - 8:36 p.m.

YOW

SDF

10h 41m

2 stops

C$ 985Air Canada

Sat, 22 Aug - Wed, 26 Aug

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American Airlines flights from Louisville to Region of Ontario

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

American Airlines

15 Aug

SDF6:28 a.m.Louisville Intl

12h 02m

1 stop

YYZ6:30 p.m.Toronto Pearson Intl

22 Aug

YYZ1:15 p.m.Toronto Pearson Intl

8h 10m

1 stop

SDF9:25 p.m.Louisville Intl

C$ 728

American Airlines

4 Aug

SDF6:48 a.m.Louisville Intl

7h 46m

1 stop

YYZ2:34 p.m.Toronto Pearson Intl

11 Aug

YYZ7:20 a.m.Toronto Pearson Intl

14h 05m

1 stop

SDF9:25 p.m.Louisville Intl

C$ 732

American Airlines

23 Sep

SDF10:29 a.m.Louisville Intl

8h 06m

1 stop

YYZ6:35 p.m.Toronto Pearson Intl

26 Sep

YYZ6:30 a.m.Toronto Pearson Intl

10h 59m

1 stop

SDF5:29 p.m.Louisville Intl

C$ 759

WestJet flights from Louisville to Region of Ontario

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

WestJet

17 Oct

SDF8:20 a.m.Louisville Intl

15h 39m

1 stop

YUL11:59 p.m.Montreal Pierre Elliott Trudeau Intl

21 Oct

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

6h 49m

1 stop

SDF1:49 p.m.Louisville Intl

C$ 798

WestJet

21 Aug

SDF3:25 p.m.Louisville Intl

15h 30m

2 stops

YYZ6:55 a.m.Toronto Pearson Intl

23 Aug

YYZ6:00 a.m.Toronto Pearson Intl

13h 30m

1 stop

SDF7:30 p.m.Louisville Intl

C$ 803

WestJet

18 Aug

SDF7:05 a.m.Louisville Intl

9h 40m

2 stops

YUL4:45 p.m.Montreal Pierre Elliott Trudeau Intl

25 Aug

YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl

7h 06m

2 stops

SDF1:51 p.m.Louisville Intl

C$ 822

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 14/8

9:10 p.m.-2:05 p.m.

1 stop16h 55m

Toronto Pearson Intl

Wed 19/8

4:45 p.m.-6:15 p.m.

2 stops25h 30m

C$ 559

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 7/8

9:28 p.m.-8:40 p.m.

1 stop23h 12m

Toronto Pearson Intl

Wed 12/8

9:30 a.m.-10:32 a.m.

2 stops25h 02m

C$ 565

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sat 8/8

6:30 a.m.-1:09 p.m.

1 stop6h 39m

Montreal Pierre Elliott Trudeau Intl

Sat 8/8

4:55 p.m.-11:59 p.m.

1 stop7h 04m

C$ 696

Quickest round-trip

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Thu 16/7

7:37 a.m.-3:19 p.m.

1 stop7h 42m

Montreal Pierre Elliott Trudeau Intl

Wed 22/7

1:05 p.m.-5:36 p.m.

1 stop4h 31m

C$ 722

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sat 15/8

8:16 a.m.-1:46 p.m.

1 stop5h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 15/8

5:35 p.m.-10:35 a.m.

1 stop17h 00m

C$ 732

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sun 16/8

10:23 a.m.-5:30 p.m.

1 stop7h 07m

Montreal Pierre Elliott Trudeau Intl

Sun 23/8

6:10 a.m.-1:11 p.m.

1 stop7h 01m

C$ 737

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Fri 7/8

2:09 p.m.-8:39 a.m.

1 stop18h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 11/8

2:29 p.m.-8:59 p.m.

1 stop6h 30m

C$ 758

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Thu 16/7

6:00 a.m.-12:01 p.m.

2 stops6h 01m

Montreal Pierre Elliott Trudeau Intl

Wed 22/7

1:10 p.m.-8:25 p.m.

1 stop7h 15m

C$ 771

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Mon 3/8

2:34 p.m.-11:30 p.m.

1 stop8h 56m

Montreal Pierre Elliott Trudeau Intl

Mon 10/8

6:00 a.m.-1:51 p.m.

1 stop7h 51m

C$ 789

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Sat 22/8

7:10 a.m.-1:59 p.m.

1 stop6h 49m

Ottawa

Wed 26/8

9:55 a.m.-8:36 p.m.

2 stops10h 41m

C$ 985

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?

In general, June is the cheapest month to fly from Louisville to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 341. If you are unable to visit Region of Ontario during the month of June, then departing from Louisville during the month May is also very affordable. Most momondo users find prices during this month for around C$ 366.

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	3h 56m
Direct flights	None

The fastest flight from Louisville to Region of Ontario takes 3h 56m

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 updated daily.
How old do you have to be to fly from Louisville Intl Airport to Ontario?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Louisville Intl Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

Finding the right flight to Ontario from Louisville is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.

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

Yes. All flights to Ontario from Louisville on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Louisville and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Louisville to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.