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Cheap flights from Louisville to Ontario from C$ 114

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 19/6. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — YYZ
5 May — 12 May1
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 30 April 2025.

Round-trip from

C$ 345

One-way from

C$ 114

Popular in

December

Cheapest in

November

Average price

C$ 616
11/6-15/6
  • 11/6-15/6
  • 2 total stops
  • 45h 39m total
  • Louisville to Ontario
Search Deals
19/6
  • 19/6
  • 1 total stop
  • 9h 02m total
  • Louisville to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 146 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).
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Average for round-trip flights in April 2025
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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 30 April 2025.

Wed 11/69:34 a.m.SDF - YYZ
1 stop28h 31mMultiple Airlines
Sun 15/66:30 a.m.YYZ - SDF
1 stop17h 08mMultiple Airlines
Deal found 27/4C$ 345
Wed 11/69:34 a.m.SDF - YUL
2 stops15h 03mMultiple Airlines
Wed 18/610:30 a.m.YUL - SDF
2 stops13h 08mMultiple Airlines
Deal found 28/4C$ 429
Sat 31/58:55 a.m.SDF - YYZ
1 stop5h 43mUnited Airlines
Thu 5/62:45 p.m.YYZ - SDF
1 stop7h 29mUnited Airlines
Deal found 28/4C$ 489
Fri 20/66:00 a.m.SDF - YYZ
1 stop6h 13mWestJet
Mon 23/66:30 p.m.YYZ - SDF
2 stops19h 49mWestJet
Deal found 28/4C$ 545
Fri 13/67:45 p.m.SDF - YOW
1 stop13h 46mMultiple Airlines
Fri 20/611:00 a.m.YOW - SDF
1 stop5h 16mMultiple Airlines
Deal found 28/4C$ 584
Sun 18/57:25 a.m.SDF - YUL
1 stop4h 56mAmerican Airlines
Wed 21/52:35 p.m.YUL - SDF
1 stop9h 43mAmerican Airlines
Deal found 29/4C$ 592
Wed 7/54:25 p.m.SDF - YUL
1 stop4h 44mWestJet
Fri 9/55:05 p.m.YUL - SDF
1 stop4h 21mWestJet
Deal found 28/4C$ 746
Thu 16/106:05 a.m.SDF - YYZ
1 stop10h 06mDelta
Mon 20/103:59 p.m.YYZ - SDF
2 stops19h 32mDelta
Deal found 29/4C$ 768
Sun 17/86:00 a.m.SDF - YUL
1 stop13h 45mUnited Airlines
Sun 24/88:05 a.m.YUL - SDF
2 stops12h 57mUnited Airlines
Deal found 28/4C$ 864
Thu 19/62:34 p.m.SDF - YYZ
1 stop8h 54mAmerican Airlines
Wed 10/97:25 p.m.YYZ - SDF
1 stop4h 20mAmerican Airlines
Deal found 28/4C$ 894
Thu 1/511:00 a.m.SDF - YUL
1 stop6h 26mAir Canada
Wed 7/51:00 p.m.YUL - SDF
2 stops9h 30mAir Canada
Deal found 28/4C$ 923
Wed 8/1010:45 a.m.SDF - YUL
2 stops10h 41mDelta
Sat 18/106:00 a.m.YUL - SDF
2 stops11h 39mDelta
Deal found 28/4C$ 1,030

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 30 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

Wed 11/6

9:34 a.m.-2:05 p.m.

1 stop28h 31m

Toronto Pearson Intl

Sun 15/6

6:30 a.m.-11:38 p.m.

1 stop17h 08m

C$ 345

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Wed 11/6

9:34 a.m.-12:37 a.m.

2 stops15h 03m

Montreal Pierre Elliott Trudeau Intl

Wed 18/6

10:30 a.m.-11:38 p.m.

2 stops13h 08m

C$ 429

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Sat 31/5

8:55 a.m.-2:38 p.m.

1 stop5h 43m

Toronto Pearson Intl

Thu 5/6

2:45 p.m.-10:14 p.m.

1 stop7h 29m

C$ 489

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 20/6

6:00 a.m.-12:13 p.m.

1 stop6h 13m

Toronto Pearson Intl

Mon 23/6

6:30 p.m.-2:19 p.m.

2 stops19h 49m

C$ 545

LouisvilleOttawa

SDF - YOW

SDFYOW

Louisville Intl

Fri 13/6

7:45 p.m.-9:31 a.m.

1 stop13h 46m

Ottawa

Fri 20/6

11:00 a.m.-4:16 p.m.

1 stop5h 16m

C$ 584

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sun 18/5

7:25 a.m.-12:21 p.m.

1 stop4h 56m

Montreal Pierre Elliott Trudeau Intl

Wed 21/5

2:35 p.m.-12:18 a.m.

1 stop9h 43m

C$ 592

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 15/8

7:12 a.m.-11:09 p.m.

1 stop15h 57m

Toronto Pearson Intl

Mon 18/8

7:15 p.m.-7:30 p.m.

1 stop24h 15m

C$ 747

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Thu 16/10

6:05 a.m.-4:11 p.m.

1 stop10h 06m

Toronto Pearson Intl

Mon 20/10

3:59 p.m.-11:31 a.m.

2 stops19h 32m

C$ 768

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sun 17/8

6:00 a.m.-7:45 p.m.

1 stop13h 45m

Montreal Pierre Elliott Trudeau Intl

Sun 24/8

8:05 a.m.-9:02 p.m.

2 stops12h 57m

C$ 864

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sun 17/8

6:26 p.m.-11:09 p.m.

1 stop4h 43m

Montreal Pierre Elliott Trudeau Intl

Sun 24/8

6:00 a.m.-11:24 a.m.

1 stop5h 24m

C$ 872

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/4

Showing 1-10 of 23 results
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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 30 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 30 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
7,936 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,936 reviews
Delta
8.0
Very good
7,936 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
8,696 reviews
Delta
8.0
Very good
7,936 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
7,936 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
2,826 reviews
Delta
8.0
Very good
7,936 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
9,242 reviews
Delta
8.0
Very good
7,936 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

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$ 223 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from C$ 237 and C$ 263, 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 - Toronto Pearson Intl. You may also consider Louisville Intl - Montreal Pierre Elliott Trudeau 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

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Alternative routes for Louisville to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 458AverageC$ 602FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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

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