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$109+ Cheap flights from Louisville (SDF) to Ontario

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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — YYZ
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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Cheap flight deals from Louisville to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Ontario (CAON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$255
(Mytrip)

One-way from

$109
(Kiwi.com)

Popular in

December

Cheapest in

October
Provider with most accurate pricing for Louisville Intl-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Louisville Intl-Toronto (YTO) flights.
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From Louisville Intl to Ontario
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One-way flight from Louisville Intl to Ontario
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Highest demand for flights based on searches. 17% potential increase in price ($80 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).
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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 January 30, 2025.

This Mytrip deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/46:00 amSDF - YYZ
1 stop7h 55mMultiple Airlines
Tue 3/117:05 amYYZ - SDF
1 stop11h 16mMultiple Airlines
Deal found 1/30$255
This Delta deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/287:35 amSDF - YYZ
1 stop8h 34mDelta
Sun 3/22:45 pmYYZ - SDF
1 stop8h 36mDelta
Deal found 1/30$347
This United Airlines deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/17:02 amSDF - YYZ
1 stop6h 40mUnited Airlines
Sun 4/135:30 pmYYZ - SDF
1 stop5h 00mUnited Airlines
Deal found 1/30$352
This American Airlines deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/112:11 pmSDF - YYZ
2 stops6h 49mAmerican Airlines
Sun 4/137:15 pmYYZ - SDF
1 stop4h 59mAmerican Airlines
Deal found 1/30$362
This Delta deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/287:05 amSDF - YUL
1 stop9h 53mDelta
Fri 3/76:03 pmYUL - SDF
1 stop5h 55mDelta
Deal found 1/29$377
This United Airlines deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/11:58 pmSDF - YUL
1 stop7h 44mUnited Airlines
Fri 3/76:30 pmYUL - SDF
1 stop15h 42mUnited Airlines
Deal found 1/29$383
This American Airlines deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/286:17 amSDF - YUL
1 stop7h 18mAmerican Airlines
Fri 3/710:59 amYUL - SDF
2 stops10h 47mAmerican Airlines
Deal found 1/29$388
This Mytrip deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/107:16 pmSDF - YUL
2 stops21h 29mMultiple Airlines
Mon 3/176:45 amYUL - SDF
1 stop11h 36mMultiple Airlines
Deal found 1/29$399
This Justfly.com deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/276:00 amSDF - YYZ
1 stop7h 47mWestJet
Sun 3/3010:35 pmYYZ - SDF
2 stops25h 24mWestJet
Deal found 1/30$424
This Air Canada deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/99:11 amSDF - YUL
1 stop6h 47mAir Canada
Thu 2/137:00 amYUL - SDF
1 stop6h 17mAir Canada
Deal found 1/29$458
This WestJet deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/14:18 pmSDF - YUL
1 stop5h 04mWestJet
Sat 4/56:45 amYUL - SDF
2 stops17h 13mWestJet
Deal found 1/29$483
This FlightHub deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/512:15 pmSDF - YOW
2 stops11h 54mWestJet
Wed 2/125:55 amYOW - SDF
2 stops9h 31mWestJet
Deal found 1/29$630

Find flights from Louisville to Ontario within your budget

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 2,558,603 searches. Data last updated January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Tue 3/4

6:00 am-1:55 pm

1 stop7h 55m

Toronto Pearson Intl

Tue 3/11

7:05 am-6:21 pm

1 stop11h 16m

$255

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Wed 2/12

6:35 am-12:30 pm

1 stop5h 55m

Toronto Pearson Intl

Wed 2/12

4:30 pm-12:35 am

1 stop8h 05m

$315

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Wed 3/12

10:05 am-4:06 pm

1 stop6h 01m

Toronto Pearson Intl

Mon 3/24

3:30 pm-10:31 pm

1 stop7h 01m

$352

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Fri 2/28

7:05 am-4:58 pm

1 stop9h 53m

Montreal Pierre Elliott Trudeau Intl

Fri 3/7

6:03 pm-11:58 pm

1 stop5h 55m

$377

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sat 3/1

1:58 pm-9:42 pm

1 stop7h 44m

Montreal Pierre Elliott Trudeau Intl

Fri 3/7

6:30 pm-10:12 am

1 stop15h 42m

$383

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Fri 2/28

6:17 am-1:35 pm

1 stop7h 18m

Montreal Pierre Elliott Trudeau Intl

Fri 3/7

10:59 am-9:46 pm

2 stops10h 47m

$388

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Fri 3/14

6:00 am-11:09 am

1 stop5h 09m

Toronto Pearson Intl

Sun 3/23

2:45 pm-11:15 pm

1 stop8h 30m

$394

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Mon 3/10

7:16 pm-4:45 pm

2 stops21h 29m

Montreal Pierre Elliott Trudeau Intl

Mon 3/17

6:45 am-6:21 pm

1 stop11h 36m

$399

LouisvilleToronto

SDF - YYZ

SDFYYZ

Louisville Intl

Sun 3/16

7:35 am-4:12 pm

1 stop8h 37m

Toronto Pearson Intl

Sun 3/23

12:20 pm-9:30 pm

1 stop9h 10m

$406

LouisvilleMontreal

SDF - YUL

SDFYUL

Louisville Intl

Sun 2/9

9:11 am-3:58 pm

1 stop6h 47m

Montreal Pierre Elliott Trudeau Intl

Thu 2/13

7:00 am-1:17 pm

1 stop6h 17m

$458

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 24 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.

Travel insights for flights from Louisville to Ontario

Get recent, data-driven insights about flights from Louisville to Ontario including ideal travel times, pricing trends, and more.

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 $243). Flying from Louisville to Region of Ontario in July is currently the most expensive (average of $359). 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.

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 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 January 30, 2025.
To help decide which airline to fly from Louisville to Ontario, see what other customers have to say about Delta, United Airlines and American Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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
8,454 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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
8,913 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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
2,817 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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
8,640 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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?

    If you book a flight to Ontario from Louisville, you will be flying from Louisville Intl, which is the city’s only airport. Louisville Intl (SDF) is located 5.3 mi from the center of Louisville.

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

    One-way options have recently been found by users for as low as $166 on American Airlines. Other airlines that offer cheap prices include WestJet from $208 and Delta from $351 one-way.

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

    The most popular flight routes from Louisville to Region of Ontario are Louisville Intl - Toronto Pearson Intl, Louisville Intl - Montreal Pierre Elliott Trudeau Intl and 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 $243). Flying from Louisville to Region of Ontario in July is currently the most expensive (average of $359). 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 5 airlines flying from Louisville to Ontario

Discover the top 5 airlines 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 2,558,603 searches. Data last updated January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$276Average$398FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$276Average$537FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$276Average$398FlexibilityNo cancel feeOn-time71%
DeltaCheapest$312Average$424FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$331Average$411FlexibilityNo cancel feeOn-time60%
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