Find flights
When to book
Airlines
FAQs

Cheap flights from Louisville to Ontario from C$ 200

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/5. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — YYZ
22 Apr — 29 Apr1
1 adult

Cheap flight deals from Louisville to Ontario

Keep the following information in mind while searching for Louisville to Ontario flight deals. Data was last updated 17 April 2025.

Round-trip from

C$ 398

One-way from

C$ 200

Popular in

December

Cheapest in

November

Average price

C$ 617
14/6-18/6
  • 14/6-18/6
  • 2 total stops
  • 35h 25m total
  • Louisville to Ontario
Search Deals
American Airlines
  • American Airlines
  • 16/5
  • 1 total stop
  • 5h 52m total
  • Louisville to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (C$ 51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Louisville to Ontario

Cheapest flights from Louisville to Ontario
Explore the most affordable flight options available from Louisville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 April 2025.

Sat 14/65:03 a.m.SDF - YYZ
1 stop9h 02mMultiple Airlines
Wed 18/69:50 a.m.YYZ - SDF
1 stop26h 23mMultiple Airlines
Deal found 17/4C$ 398
Fri 16/57:50 a.m.SDF - YYZ
1 stop4h 20mAmerican Airlines
Sun 18/511:45 a.m.YYZ - SDF
1 stop12h 33mAmerican Airlines
Deal found 17/4C$ 476
Fri 20/67:50 a.m.SDF - YYZ
1 stop6h 51mDelta
Mon 23/66:15 a.m.YYZ - SDF
1 stop8h 04mDelta
Deal found 17/4C$ 491
Thu 1/56:00 a.m.SDF - YUL
1 stop5h 33mDelta
Sun 4/56:00 a.m.YUL - SDF
1 stop6h 33mDelta
Deal found 17/4C$ 498
Thu 1/510:08 a.m.SDF - YUL
1 stop7h 07mAir Canada
Wed 7/51:00 p.m.YUL - SDF
2 stops9h 30mAir Canada
Deal found 17/4C$ 505
Sun 17/86:00 a.m.SDF - YYZ
1 stop6h 01mUnited Airlines
Wed 20/812:05 p.m.YYZ - SDF
2 stops10h 19mUnited Airlines
Deal found 17/4C$ 521
Mon 30/612:19 p.m.SDF - YUL
3 stops33h 56mMultiple Airlines
Fri 4/76:45 a.m.YUL - SDF
2 stops27h 19mMultiple Airlines
Deal found 17/4C$ 531
Mon 22/98:23 p.m.SDF - YUL
1 stop17h 07mAmerican Airlines
Thu 25/910:37 a.m.YUL - SDF
2 stops11h 04mAmerican Airlines
Deal found 17/4C$ 563
Wed 30/46:45 a.m.SDF - YUL
1 stop6h 24mUnited Airlines
Sun 4/59:15 a.m.YUL - SDF
1 stop10h 32mUnited Airlines
Deal found 17/4C$ 607
Thu 15/56:56 p.m.SDF - YUL
2 stops29h 41mWestJet
Thu 22/56:45 a.m.YUL - SDF
2 stops10h 25mWestJet
Deal found 17/4C$ 693
Sat 25/107:20 a.m.SDF - YYZ
1 stop4h 09mWestJet
Fri 31/106:08 p.m.YYZ - SDF
1 stop3h 33mWestJet
Deal found 16/4C$ 893
Wed 9/78:00 a.m.SDF - YXU
2 stops30h 57mUnited Airlines
Sun 13/75:45 p.m.YXU - SDF
2 stops16h 42mUnited Airlines
Deal found 17/4C$ 998

Cheapflights Fare Finder

Customize your flight search to find flights from Louisville to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 17 April 2025.
Use the filters below to find and compare flights from Louisville to Ontario that are best for you.

Fly from

Louisville

Fly to

Ontario

Route

Depart

Return

Price

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Sat 14/6

5:03 a.m.-2:05 p.m.

1 stop9h 02m

Toronto Pearson Intl

Wed 18/6

9:50 a.m.-12:13 p.m.

1 stop26h 23m

C$ 398

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 16/5

7:50 a.m.-12:10 p.m.

1 stop4h 20m

Toronto Pearson Intl

Sun 18/5

11:45 a.m.-12:18 a.m.

1 stop12h 33m

C$ 476

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 20/6

7:50 a.m.-2:41 p.m.

1 stop6h 51m

Toronto Pearson Intl

Mon 23/6

6:15 a.m.-2:19 p.m.

1 stop8h 04m

C$ 491

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Thu 1/5

6:00 a.m.-11:33 a.m.

1 stop5h 33m

Montreal Pierre Elliott Trudeau Intl

Sun 4/5

6:00 a.m.-12:33 p.m.

1 stop6h 33m

C$ 498

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Thu 1/5

10:08 a.m.-5:15 p.m.

1 stop7h 07m

Montreal Pierre Elliott Trudeau Intl

Wed 7/5

1:00 p.m.-10:30 p.m.

2 stops9h 30m

C$ 505

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Sun 17/8

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

1 stop6h 01m

Toronto Pearson Intl

Wed 20/8

12:05 p.m.-10:24 p.m.

2 stops10h 19m

C$ 521

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Mon 30/6

12:19 p.m.-10:15 p.m.

3 stops33h 56m

Montreal Pierre Elliott Trudeau Intl

Fri 4/7

6:45 a.m.-10:04 a.m.

2 stops27h 19m

C$ 531

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Mon 22/9

8:23 p.m.-1:30 p.m.

1 stop17h 07m

Montreal Pierre Elliott Trudeau Intl

Thu 25/9

10:37 a.m.-9:41 p.m.

2 stops11h 04m

C$ 563

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Wed 30/4

6:45 a.m.-1:09 p.m.

1 stop6h 24m

Montreal Pierre Elliott Trudeau Intl

Sun 4/5

9:15 a.m.-7:47 p.m.

1 stop10h 32m

C$ 607

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Thu 15/5

6:56 p.m.-12:37 a.m.

2 stops29h 41m

Montreal Pierre Elliott Trudeau Intl

Thu 22/5

6:45 a.m.-5:10 p.m.

2 stops10h 25m

C$ 693

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/4

Showing 1-10 of 17 results
1
2

Best time to book a flight from Louisville to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Louisville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Louisville to Ontario

What is the cheapest month to book a flight from Louisville to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Louisville to Region of Ontario (average of C$ 167). Flying from Louisville to Region of Ontario in July is currently the most expensive (average of C$ 258). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SDF to ON?

Find hourly flight availability from Louisville to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 April 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Louisville to Region of Ontario as you normally would.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 17 April 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and American Airlines from Louisville to Ontario to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,916 reviews
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
WestJet
7.2
Good
2,809 reviews
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,143 reviews
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Louisville to Ontario?

    Most people fly from Louisville Intl (SDF) if they book a flight from Louisville to Ontario. Louisville Intl is conveniently located just 8.5 km from Louisville’s city centre.

  • What are the cheapest airlines to fly from Louisville to Region of Ontario one-way?

    C$ 200 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from C$ 207 and C$ 585, respectively.

  • What are the most popular routes from Louisville to Region of Ontario?

    The most popular route from Louisville to Region of Ontario is Louisville Intl - Montreal Pierre Elliott Trudeau Intl. You may also consider Louisville Intl - Toronto Pearson Intl or Louisville Intl - Ottawa.

  • Can I find deals for flights from Louisville to Ontario that include hotel bookings?

    Yes. In addition to deals on Louisville to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Ontario.

  • Can I find deals for business class flights from Louisville to Ontario?

    Yes. Cheapflights offers flight deals from Louisville to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Louisville to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Louisville to Region of Ontario (average of C$ 167). Flying from Louisville to Region of Ontario in July is currently the most expensive (average of C$ 258). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Louisville to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Cincinnati to Vancouver Intl flights
Cincinnati to Pierre Elliott Trudeau Intl flights
Cincinnati to Pearson Intl flights
Nashville to Calgary flights
Nashville to Pearson Intl flights
Nashville to Pierre Elliott Trudeau Intl flights
Cincinnati to Calgary flights
Nashville to Vancouver Intl flights
Louisville to Pierre Elliott Trudeau Intl flights
Cincinnati to Abbotsford flights
Louisville to Vancouver Intl flights
Louisville to Calgary flights
Knoxville to Pearson Intl flights
Louisville to Pearson Intl flights
Cincinnati to Halifax flights
Nashville to St. John's flights
Knoxville to Vancouver Intl flights
Lexington to Pearson Intl flights
Knoxville to Pierre Elliott Trudeau Intl flights
Lexington to Pierre Elliott Trudeau Intl flights
Cincinnati to Québec City flights
Nashville to Halifax flights
Nashville to Québec City flights
Knoxville to Calgary flights
Cincinnati to Edmonton flights
Cincinnati to Ottawa flights
Nashville to Victoria flights
Nashville to Edmonton flights
Louisville to Halifax flights
Louisville to Ottawa flights
Nashville to Ottawa flights
Lexington to Québec City flights
Cincinnati to Winnipeg flights
Knoxville to Halifax flights
Nashville to Kelowna flights
Louisville to Kelowna flights
Louisville to London flights
Lexington to Calgary flights

Top airline flying from Louisville to Ontario

Discover the top airline that operate flights from Louisville to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 17 April 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 459AverageC$ 603FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Louisville to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Louisville to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Louisville to Ontario?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Louisville to Ontario.

Can Cheapflights find flights from Louisville to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from Louisville to Ontario with no change fees.

Can Cheapflights notify me if prices for flights from Louisville to Ontario become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.