$171+ Cheap flights from Ontario to Louisville (ONT - SDF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SDF
Oct 28 — Nov 41
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Louisville with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Louisville
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Cheapest flights from Ontario to LouisvilleExplore the most affordable flight options available from Ontario to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 28, 2026.
Explore the most affordable flight options available from Ontario to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:26 pm -
1 stop20h 53m
Mon 12/148:47 am -
1 stop17h 36m
Deal found 9/26![Multiple Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 9/23. 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.
Tue 10/202:22 pm -
1 stop6h 05m
Tue 11/36:01 am -
1 stop6h 39m
Deal found 9/23![American Airlines logo]()
$341
This American Airlines deal was found by Cheapflights users on 9/25. 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 10/242:22 pm -
1 stop6h 05m
Sat 10/318:02 am -
1 stop6h 51m
Deal found 9/25![American Airlines logo]()
$342
This United Airlines deal was found by Cheapflights users on 9/23. 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.
Tue 10/275:00 am -
2 stops10h 32m
Wed 10/287:00 am -
2 stops8h 33m
Deal found 9/23![United Airlines logo]()
$351
This American Airlines deal was found by Cheapflights users on 9/23. 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 10/1611:59 pm -
1 stop7h 25m
Wed 10/216:00 am -
1 stop8h 53m
Deal found 9/23![American Airlines logo]()
$353
This American Airlines deal was found by Cheapflights users on 9/28. 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.
Thu 11/266:00 am -
1 stop7h 02m
Tue 12/13:27 pm -
1 stop10h 53m
Deal found 9/28![American Airlines logo]()
$376
This Southwest deal was found by Cheapflights users on 9/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:55 pm -
1 stop7h 10m
Wed 10/217:10 pm -
1 stop5h 55m
Deal found 9/24![Southwest logo]()
$379
Best flights from Ontario to LouisvilleDiscover carefully curated flight deals from Ontario to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 28, 2026.
Discover carefully curated flight deals from Ontario to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 28, 2026.
This Southwest deal was found by Cheapflights users on 9/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/271:35 pm -
1 stop6h 25m
Wed 10/282:05 pm -
2 stops9h 45m
Deal found 9/23![Southwest logo]()
$346
This Delta deal was found by Cheapflights users on 9/23. 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.
Thu 10/1511:15 pm -
1 stop6h 42m
Fri 10/165:59 pm -
1 stop7h 10m
Deal found 9/23![Delta logo]()
$452
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Tue 11/177:00 am -
1 stop6h 57m
Wed 11/183:24 pm -
1 stop8h 27m
Deal found 9/27![United Airlines logo]()
$461
This Southwest deal was found by Cheapflights users on 9/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/108:40 am -
2 stops8h 55m
Mon 12/1412:10 pm -
2 stops10h 35m
Deal found 9/26![Southwest logo]()
$401
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Fri 11/61:32 pm -
1 stop5h 52m
Mon 11/93:24 pm -
1 stop8h 27m
Deal found 9/27![United Airlines logo]()
$473
This Delta deal was found by Cheapflights users on 9/25. 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.
Mon 10/1911:08 pm -
1 stop6h 49m
Mon 10/265:57 pm -
1 stop6h 57m
Deal found 9/25![Delta logo]()
$489
This Southwest deal was found by Cheapflights users on 9/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/248:40 am -
2 stops8h 55m
Tue 12/297:15 pm -
2 stops7h 40m
Deal found 9/23![Southwest logo]()
$514
This United Airlines deal was found by Cheapflights users on 9/26. 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.
Fri 10/301:32 pm -
1 stop5h 52m
Sun 11/18:00 am -
1 stop7h 33m
Deal found 9/26![United Airlines logo]()
$536
This Delta deal was found by Cheapflights users on 9/24. 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.
Mon 10/1911:08 pm -
1 stop6h 49m
Tue 10/273:26 pm -
1 stop7h 59m
Deal found 9/24![Delta logo]()
$539
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Mon 10/196:32 pm -
2 stops12h 02m
Mon 10/263:24 pm -
1 stop8h 27m
Deal found 9/28![United Airlines logo]()
$559
Last-minute flights from Ontario to LouisvilleDiscover last-minute flight deals from Ontario to Louisville. Data last updated September 28, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Louisville. Data last updated September 28, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/23. 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 10/1611:59 pm -
1 stop7h 25m
Wed 10/216:00 am -
1 stop8h 53m
Deal found 9/23![American Airlines logo]()
$353
This Southwest deal was found by Cheapflights users on 9/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:55 pm -
1 stop7h 10m
Wed 10/217:10 pm -
1 stop5h 55m
Deal found 9/24![Southwest logo]()
$379
This American Airlines deal was found by Cheapflights users on 9/23. 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.
Tue 10/202:22 pm -
1 stop6h 05m
Tue 11/36:01 am -
1 stop6h 39m
Deal found 9/23![American Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 9/24. 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.
Thu 10/2211:15 pm -
1 stop6h 42m
Thu 10/297:05 am -
1 stop7h 01m
Deal found 9/24![Delta logo]()
$390
This American Airlines deal was found by Cheapflights users on 9/25. 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 10/242:22 pm -
1 stop6h 05m
Sat 10/318:02 am -
1 stop6h 51m
Deal found 9/25![American Airlines logo]()
$342
This United Airlines deal was found by Cheapflights users on 9/23. 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.
Tue 10/275:00 am -
2 stops10h 32m
Wed 10/287:00 am -
2 stops8h 33m
Deal found 9/23![United Airlines logo]()
$351
One-way flights from Ontario to LouisvilleSearch for one-way flight options from Ontario to Louisville. Find affordable one-way fares based on user searches. Data last updated September 28, 2026.
Search for one-way flight options from Ontario to Louisville. Find affordable one-way fares based on user searches. Data last updated September 28, 2026.
This Delta deal was found by Cheapflights users on 9/27. 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.
Thu 12/247:06 am -
1 stop9h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Delta logo]()
$171
This Delta deal was found by Cheapflights users on 9/25. 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 10/1611:19 pm -
1 stop8h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Delta logo]()
$220
This United Airlines deal was found by Cheapflights users on 9/25. 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 10/247:00 am -
1 stop9h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![United Airlines logo]()
$231
This Delta deal was found by Cheapflights users on 9/27. 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.
Sun 12/2010:35 pm -
1 stop8h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Delta logo]()
$234
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Fri 10/231:24 pm -
1 stop6h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![United Airlines logo]()
$243
This United Airlines deal was found by Cheapflights users on 9/25. 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 10/178:03 am -
2 stops11h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![United Airlines logo]()
$248
This United Airlines deal was found by Cheapflights users on 9/25. 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 11/215:00 am -
1 stop6h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![United Airlines logo]()
$266
This Delta deal was found by Cheapflights users on 9/24. 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.
Mon 12/2810:35 pm -
1 stop8h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Delta logo]()
$270
This Delta deal was found by Cheapflights users on 9/25. 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.
Thu 10/1511:15 pm -
1 stop6h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Delta logo]()
$280
This United Airlines deal was found by Cheapflights users on 9/25. 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.
Sun 10/255:00 am -
1 stop6h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![United Airlines logo]()
$294
This United Airlines deal was found by Cheapflights users on 9/25. 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.
Tue 11/245:00 am -
2 stops10h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![United Airlines logo]()
$299
Find flight deals from Ontario to Louisville
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Louisville (SDF). 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 September 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $304 (Kiwi.com) |
One-way from | $171 (Delta) |
Popular in | January |
Cheapest in | February |
Average price | $454 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Louisville 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 7,457,451 searches. Data last updated September 28, 2026.
Use the filters below to find and compare flights from Ontario to Louisville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioLouisville
ONT Ontario - SDF Louisville Intl
ONTSDF
Ontario
Thu 12/24
7:06 am-7:12 pm
1 stop9h 06m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$171
Quickest round-trip
OntarioLouisville
ONT Ontario - SDF Louisville Intl
ONTSDF
Ontario
Thu 11/12
1:29 pm-10:24 pm
1 stop5h 55m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$231
OntarioLouisville
ONT Ontario - SDF Louisville Intl
ONTSDF
Ontario
Sat 10/24
5:00 am-7:11 pm
2 stops11h 11m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$236
OntarioLouisville
ONT Ontario - SDF Louisville Intl
ONTSDF
Ontario
Fri 10/23
1:24 pm-10:32 pm
1 stop6h 08m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$243
OntarioLouisville
ONT Ontario - SDF Louisville Intl
ONTSDF
Ontario
Tue 11/24
5:00 am-2:22 pm
1 stop6h 22m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$266
OntarioLouisville
ONT Ontario - SDF Louisville Intl
ONTSDF
Ontario
Sat 10/3
7:05 am-7:30 pm
1 stop9h 25m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$301
OntarioLouisville
ONT Ontario - SDF Louisville Intl
ONTSDF
Ontario
Sat 10/10
5:45 am-8:00 pm
2 stops11h 15m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$309
OntarioLouisville
ONT Ontario - SDF Louisville Intl
ONTSDF
Ontario
Wed 10/21
5:00 am-8:31 pm
2 stops12h 31m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$329
OntarioLouisville
ONT Ontario - SDF Louisville Intl
ONTSDF
Ontario
Tue 10/27
1:35 pm-11:00 pm
1 stop6h 25m
Louisville Intl
Wed 10/28
2:05 pm-8:50 pm
2 stops9h 45m
$346
OntarioLouisville
ONT Ontario - SDF Louisville Intl
ONTSDF
Ontario
Sat 10/3
7:00 am-7:11 pm
1 stop9h 11m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$361
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Ontario to Louisville
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Louisville in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Louisville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Louisville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Ontario to Louisville
Have a flexible travel schedule? Discover the best time to fly to Louisville from Ontario with our price prediction graph.
ONT-SDF
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 Ontario to Louisville
What is the cheapest month to book a flight from Ontario to Louisville?
Currently, February is the cheapest month in which you can book a flight from Ontario to Louisville (average of $406). Flying from Ontario to Louisville in January is currently the most expensive (average of $976). 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.
How much does it cost to fly round-trip from Ontario to Louisville?
Airfare is below average for this route at the moment.
Ontario to Louisville flights typically cost between $382 and $567 in December.The cheapest round-trip price found within the last 5 days was $304 on Multiple Airlines (Dec 10-Dec 14).
Reviews of airlines servicing Louisville
Get insights into the airlines that provide service to Louisville. 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 Louisville. Reviews last updated September 28, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Ontario to Louisville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Louisville?
Book flights to Louisville if you plan to visit one of these locationsShepherdsville
Elizabethtown
Jeffersonville
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.
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Alternative routes for Ontario to Louisville
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Complete your trip
Complete your trip to Louisville by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Louisville by cabin class
Find flights from Ontario to Louisville, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Louisville
Explore flights to Louisville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 28, 2026.
Ontario and Louisville flights
Browse other Ontario and Louisville flight options. Last updated on September 28, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on September 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Ontario to Louisville
Discover the top 4 airlines that operate flights from Ontario to Louisville. 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 7,457,451 searches. Data last updated September 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$276 | Average$489 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$288 | Average$454 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$303 | Average$448 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$327 | Average$459 | FlexibilityNo cancel fee | On-time63% |