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

Delta, 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$ 252 Cheap Flights from Louisville to Ontario in 2026

1 adult

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

6:00 a.m. - 2:17 p.m.

SDF

YOW

8h 17m

1 stop

3:10 p.m. - 10:54 p.m.

YOW

SDF

7h 44m

1 stop

C$ 554United Airlines

Wed, 3 Jun - Sat, 6 Jun

7:08 p.m. - 7:05 p.m.

SDF

YYZ

23h 57m

1 stop

7:35 a.m. - 8:42 p.m.

YYZ

SDF

13h 07m

1 stop

C$ 587Multiple Airlines

Mon, 26 Oct - Fri, 30 Oct

10:00 a.m. - 2:17 p.m.

SDF

YOW

4h 17m

1 stop

10:44 a.m. - 11:56 p.m.

YOW

SDF

13h 12m

1 stop

C$ 589United Airlines

Wed, 3 Jun - Thu, 4 Jun

8:48 p.m. - 2:05 p.m.

SDF

YYZ

17h 17m

1 stop

1:30 p.m. - 10:32 a.m.

YYZ

SDF

21h 02m

2 stops

C$ 596Multiple Airlines

Fri, 31 Jul - Sat, 8 Aug

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

SDF

YYZ

23h 12m

1 stop

4:45 p.m. - 7:58 p.m.

YYZ

SDF

27h 13m

2 stops

C$ 637Multiple Airlines

Fri, 10 Jul - Thu, 23 Jul

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

SDF

YYZ

16h 55m

1 stop

1:30 p.m. - 8:36 a.m.

YYZ

SDF

43h 06m

2 stops

C$ 663Multiple Airlines

Mon, 8 Jun - Mon, 15 Jun

6:00 a.m. - 2:17 p.m.

SDF

YOW

8h 17m

1 stop

5:05 a.m. - 1:35 p.m.

YOW

SDF

8h 30m

2 stops

C$ 676Air Canada

Wed, 3 Jun - Sat, 6 Jun

6:01 a.m. - 4:48 p.m.

SDF

YYZ

10h 47m

1 stop

11:01 a.m. - 8:25 p.m.

YYZ

SDF

9h 24m

1 stop

C$ 703American Airlines

Wed, 27 May - Sat, 30 May

6:00 a.m. - 2:17 p.m.

SDF

YOW

8h 17m

1 stop

7:00 a.m. - 5:03 p.m.

YOW

SDF

10h 03m

2 stops

C$ 710Air Canada

Wed, 3 Jun - Thu, 4 Jun

6:56 p.m. - 11:44 a.m.

SDF

YUL

16h 48m

1 stop

12:30 p.m. - 10:19 p.m.

YUL

SDF

9h 49m

1 stop

C$ 844American Airlines

Fri, 29 May - Wed, 10 Jun

WestJet flights from Louisville to Region of Ontario

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

WestJet

6 Aug

SDF11:17 a.m.Louisville Intl

6h 02m

1 stop

YYZ5:19 p.m.Toronto Pearson Intl

9 Aug

YYZ6:00 a.m.Toronto Pearson Intl

4h 32m

1 stop

SDF10:32 a.m.Louisville Intl

C$ 851

WestJet

23 May

SDF4:28 p.m.Louisville Intl

7h 13m

1 stop

YUL11:41 p.m.Montreal Pierre Elliott Trudeau Intl

29 May

YUL6:51 p.m.Montreal Pierre Elliott Trudeau Intl

15h 29m

1 stop

SDF10:20 a.m.Louisville Intl

C$ 852

WestJet

21 Sep

SDF1:20 p.m.Louisville Intl

22h 13m

1 stop

YYZ11:33 a.m.Toronto Pearson Intl

25 Sep

YYZ3:55 p.m.Toronto Pearson Intl

5h 42m

1 stop

SDF9:37 p.m.Louisville Intl

C$ 863

American Airlines flights from Louisville to Region of Ontario

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

American Airlines

27 May

SDF6:01 a.m.Louisville Intl

10h 47m

1 stop

YYZ4:48 p.m.Toronto Pearson Intl

30 May

YYZ11:01 a.m.Toronto Pearson Intl

9h 24m

1 stop

SDF8:25 p.m.Louisville Intl

C$ 703

American Airlines

27 May

SDF6:01 a.m.Louisville Intl

10h 47m

1 stop

YYZ4:48 p.m.Toronto Pearson Intl

3 Jun

YYZ11:01 a.m.Toronto Pearson Intl

10h 40m

1 stop

SDF9:41 p.m.Louisville Intl

C$ 773

American Airlines

6 Jun

SDF6:01 a.m.Louisville Intl

10h 47m

1 stop

YYZ4:48 p.m.Toronto Pearson Intl

12 Jun

YYZ11:01 a.m.Toronto Pearson Intl

10h 40m

1 stop

SDF9:41 p.m.Louisville Intl

C$ 777

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Wed 3/6

6:00 a.m.-2:17 p.m.

1 stop8h 17m

Ottawa

Sat 6/6

3:10 p.m.-10:54 p.m.

1 stop7h 44m

C$ 554

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Mon 26/10

7:08 p.m.-7:05 p.m.

1 stop23h 57m

Toronto Pearson Intl

Fri 30/10

7:35 a.m.-8:42 p.m.

1 stop13h 07m

C$ 587

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Wed 3/6

10:00 a.m.-2:17 p.m.

1 stop4h 17m

Ottawa

Thu 4/6

10:44 a.m.-11:56 p.m.

1 stop13h 12m

C$ 589

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 31/7

8:48 p.m.-2:05 p.m.

1 stop17h 17m

Toronto Pearson Intl

Sat 8/8

1:30 p.m.-10:32 a.m.

2 stops21h 02m

C$ 596

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 10/7

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

1 stop23h 12m

Toronto Pearson Intl

Thu 23/7

4:45 p.m.-7:58 p.m.

2 stops27h 13m

C$ 637

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Mon 8/6

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

1 stop16h 55m

Toronto Pearson Intl

Mon 15/6

1:30 p.m.-8:36 a.m.

2 stops43h 06m

C$ 663

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Wed 3/6

6:00 a.m.-2:17 p.m.

1 stop8h 17m

Ottawa

Sat 6/6

5:05 a.m.-1:35 p.m.

2 stops8h 30m

C$ 676

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Wed 27/5

6:01 a.m.-4:48 p.m.

1 stop10h 47m

Toronto Pearson Intl

Sat 30/5

11:01 a.m.-8:25 p.m.

1 stop9h 24m

C$ 703

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Wed 3/6

6:00 a.m.-2:17 p.m.

1 stop8h 17m

Ottawa

Thu 4/6

7:00 a.m.-5:03 p.m.

2 stops10h 03m

C$ 710

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Fri 29/5

6:56 p.m.-11:44 a.m.

1 stop16h 48m

Montreal Pierre Elliott Trudeau Intl

Wed 10/6

12:30 p.m.-10:19 p.m.

1 stop9h 49m

C$ 844

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, May 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$ 196. If you are unable to visit Region of Ontario during the month of May, then departing from Louisville during the month June is also very affordable. Most momondo users find prices during this month for around C$ 204.

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 29m
Direct flights	None

The fastest flight from Louisville to Region of Ontario takes 3h 29m

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.