$149+ Cheap flights from St. Louis to Louisville (STL - 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SDF
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis 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 St. Louis to Louisville
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Cheapest flights from St. Louis to LouisvilleExplore the most affordable flight options available from St. Louis to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from St. Louis to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This Delta deal was found by Cheapflights users on 9/10. 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.
Tue 10/612:00 pm -
1 stop3h 49m
Wed 10/77:05 am -
1 stop4h 46m
Deal found 9/10![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 9/10. 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 10/65:50 am -
2 stops5h 25m
Wed 10/77:10 pm -
1 stop3h 55m
Deal found 9/10![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 9/8. 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 10/26:54 pm -
1 stop4h 05m
Mon 10/56:00 am -
1 stop4h 00m
Deal found 9/8![Delta logo]()
$308
This Southwest deal was found by Cheapflights users on 9/8. 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.
Fri 10/24:30 pm -
2 stops6h 40m
Mon 10/56:55 pm -
1 stop6h 40m
Deal found 9/8![Southwest logo]()
$313
This Southwest deal was found by Cheapflights users on 9/8. 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.
Wed 10/148:30 am -
2 stops7h 00m
Sat 10/175:35 am -
2 stops8h 25m
Deal found 9/8![Southwest logo]()
$350
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 10/75:00 am -
1 stop6h 10m
Sun 10/116:29 am -
1 stop5h 21m
Deal found 9/9![American Airlines logo]()
$351
This Southwest deal was found by Cheapflights users on 9/9. 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.
Wed 10/78:30 am -
2 stops7h 00m
Sun 10/115:50 am -
1 stop4h 30m
Deal found 9/9![Southwest logo]()
$356
This Southwest deal was found by Cheapflights users on 9/9. 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.
Fri 10/235:25 am -
1 stop3h 45m
Sun 10/256:25 pm -
1 stop6h 30m
Deal found 9/9![Southwest logo]()
$362
This American Airlines deal was found by Cheapflights users on 9/7. 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 10/15:00 am -
1 stop3h 43m
Mon 10/55:19 pm -
1 stop4h 38m
Deal found 9/7![American Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/288:00 am -
1 stop5h 47m
Thu 10/299:02 am -
1 stop4h 08m
Deal found 9/10![United Airlines logo]()
$367
Best flights from St. Louis to LouisvilleDiscover carefully curated flight deals from St. Louis to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from St. Louis to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This Southwest deal was found by Cheapflights users on 9/10. 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 10/65:50 am -
2 stops5h 25m
Wed 10/77:10 pm -
1 stop3h 55m
Deal found 9/10![Southwest logo]()
$302
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/288:00 am -
1 stop5h 47m
Thu 10/299:02 am -
1 stop4h 08m
Deal found 9/10![United Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 9/8. 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.
Wed 10/145:50 am -
2 stops5h 25m
Sat 10/174:35 pm -
1 stop5h 45m
Deal found 9/8![Southwest logo]()
$302
This Southwest deal was found by Cheapflights users on 9/9. 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.
Wed 10/78:30 am -
2 stops7h 00m
Sun 10/115:50 am -
1 stop4h 30m
Deal found 9/9![Southwest logo]()
$356
This Southwest deal was found by Cheapflights users on 9/9. 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.
Fri 10/235:25 am -
1 stop3h 45m
Sun 10/256:25 pm -
1 stop6h 30m
Deal found 9/9![Southwest logo]()
$362
This Southwest deal was found by Cheapflights users on 9/7. 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.
Wed 10/218:30 am -
1 stop5h 45m
Mon 10/266:55 pm -
1 stop6h 40m
Deal found 9/7![Southwest logo]()
$363
Last-minute flights from St. Louis to LouisvilleDiscover last-minute flight deals from St. Louis to Louisville. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Louisville. Data last updated September 11, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/7. 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 10/15:00 am -
1 stop3h 43m
Mon 10/55:19 pm -
1 stop4h 38m
Deal found 9/7![American Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 9/8. 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 10/26:54 pm -
1 stop4h 05m
Mon 10/56:00 am -
1 stop4h 00m
Deal found 9/8![Delta logo]()
$308
This Southwest deal was found by Cheapflights users on 9/8. 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.
Fri 10/24:30 pm -
2 stops6h 40m
Mon 10/56:55 pm -
1 stop6h 40m
Deal found 9/8![Southwest logo]()
$313
This Delta deal was found by Cheapflights users on 9/10. 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.
Tue 10/612:00 pm -
1 stop3h 49m
Wed 10/77:05 am -
1 stop4h 46m
Deal found 9/10![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 9/10. 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 10/65:50 am -
2 stops5h 25m
Wed 10/77:10 pm -
1 stop3h 55m
Deal found 9/10![Southwest logo]()
$302
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 10/75:00 am -
1 stop6h 10m
Sun 10/116:29 am -
1 stop5h 21m
Deal found 9/9![American Airlines logo]()
$351
This Southwest deal was found by Cheapflights users on 9/9. 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.
Wed 10/78:30 am -
2 stops7h 00m
Sun 10/115:50 am -
1 stop4h 30m
Deal found 9/9![Southwest logo]()
$356
This Southwest deal was found by Cheapflights users on 9/8. 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.
Wed 10/148:30 am -
2 stops7h 00m
Sat 10/175:35 am -
2 stops8h 25m
Deal found 9/8![Southwest logo]()
$350
This Southwest deal was found by Cheapflights users on 9/9. 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.
Fri 10/235:25 am -
1 stop3h 45m
Sun 10/256:25 pm -
1 stop6h 30m
Deal found 9/9![Southwest logo]()
$362
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/288:00 am -
1 stop5h 47m
Thu 10/299:02 am -
1 stop4h 08m
Deal found 9/10![United Airlines logo]()
$367
One-way flights from St. Louis to LouisvilleSearch for one-way flight options from St. Louis to Louisville. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from St. Louis to Louisville. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Southwest deal was found by Cheapflights users on 9/9. 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 10/55:50 pm -
1 stop3h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Southwest logo]()
$149
This Southwest deal was found by Cheapflights users on 9/8. 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.
Wed 10/78:30 am -
2 stops7h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Southwest logo]()
$154
This American Airlines deal was found by Cheapflights users on 9/7. 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 10/225:00 am -
1 stop6h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$182
This Southwest deal was found by Cheapflights users on 9/9. 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 11/245:45 am -
1 stop5h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Southwest logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 10/224:30 pm -
2 stops40h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Mon 10/58:10 pm -
3 stops47h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Wed 10/72:29 pm -
3 stops42h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sat 9/1912:17 pm -
3 stops55h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$347
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/1912:28 pm -
1 stop6h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$348
Find flight deals from St. Louis to Louisville
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) 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 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $297 (American Airlines) |
One-way from | $149 (Southwest) |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis 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 11, 2026.
Use the filters below to find and compare flights from St. Louis to Louisville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisLouisville
STL Lambert-St Louis - SDF Louisville Intl
STLSDF
Lambert-St Louis
Wed 10/7
7:00 am-12:54 pm
1 stop4h 54m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$149
St. LouisLouisville
STL Lambert-St Louis - SDF Louisville Intl
STLSDF
Lambert-St Louis
Wed 10/7
8:30 am-4:30 pm
2 stops7h 00m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$154
St. LouisLouisville
STL Lambert-St Louis - SDF Louisville Intl
STLSDF
Lambert-St Louis
Thu 10/22
5:00 am-12:10 pm
1 stop6h 10m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$182
St. LouisLouisville
STL Lambert-St Louis - SDF Louisville Intl
STLSDF
Lambert-St Louis
Tue 11/24
5:45 am-11:50 am
1 stop5h 05m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$183
St. LouisLouisville
STL Lambert-St Louis - SDF Louisville Intl
STLSDF
Lambert-St Louis
Mon 10/5
2:30 pm-9:10 pm
2 stops5h 40m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$224
St. LouisLouisville
STL Lambert-St Louis - SDF Louisville Intl
STLSDF
Lambert-St Louis
Mon 10/5
8:10 pm-8:31 pm
3 stops47h 21m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$228
St. LouisLouisville
STL Lambert-St Louis - SDF Louisville Intl
STLSDF
Lambert-St Louis
Thu 10/22
2:00 pm-9:45 am
3 stops18h 45m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$235
St. LouisLouisville
STL Lambert-St Louis - SDF Louisville Intl
STLSDF
Lambert-St Louis
Wed 10/7
2:29 pm-9:45 am
3 stops42h 16m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$253
St. LouisLouisville
STL Lambert-St Louis - SDF Louisville Intl
STLSDF
Lambert-St Louis
Tue 10/6
5:50 am-12:15 pm
2 stops5h 25m
Louisville Intl
Wed 10/7
7:10 pm-10:05 pm
1 stop3h 55m
$302
St. LouisLouisville
STL Lambert-St Louis - SDF Louisville Intl
STLSDF
Lambert-St Louis
Wed 10/14
5:50 am-12:15 pm
2 stops5h 25m
Louisville Intl
Sat 10/17
4:35 pm-9:20 pm
1 stop5h 45m
$302
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from St. Louis 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 St. Louis to Louisville in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Louisville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-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 St. Louis-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 St. Louis to Louisville
Have a flexible travel schedule? Discover the best time to fly to Louisville from St. Louis with our price prediction graph.
STL-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.
Related info for your journey
Find useful and relevant information for your journey from St. Louis 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
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