$131+ Cheap flights from St. Louis to Louisville (STL - SDF)
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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SDF
Aug 27 — Sep 31
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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Best
Last-minute
One-way
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 July 28, 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 July 28, 2026.
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:15 am
STL
- SDF
1 stop3h 55m
Southwest
Thu 8/277:55 am
SDF
- STL
1 stop4h 55m
Southwest
Deal found 7/27![Southwest logo]()
$261
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:15 am
STL
- SDF
2 stops7h 00m
Southwest
Wed 8/198:45 am
SDF
- STL
2 stops9h 00m
Southwest
Deal found 7/27![Southwest logo]()
$271
This Delta deal was found by Cheapflights users on 7/25. 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 8/282:10 pm
STL
- SDF
1 stop6h 09m
Delta
Thu 9/310:34 am
SDF
- STL
1 stop3h 40m
Delta
Deal found 7/25![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 8/2612:59 pm
STL
- SDF
1 stop5h 08m
United Airlines
Sun 8/305:10 am
SDF
- STL
1 stop6h 02m
United Airlines
Deal found 7/27![United Airlines logo]()
$328
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Tue 10/68:30 am
STL
- SDF
1 stop5h 09m
United Airlines
Sat 10/106:16 pm
SDF
- STL
1 stop4h 05m
United Airlines
Deal found 7/26![United Airlines logo]()
$331
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:50 pm
STL
- SDF
2 stops6h 45m
Southwest
Sun 8/304:05 pm
SDF
- STL
1 stop6h 00m
Southwest
Deal found 7/27![Southwest logo]()
$333
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Fri 8/289:32 am
STL
- SDF
2 stops10h 59m
American Airlines
Thu 9/36:30 pm
SDF
- STL
1 stop6h 44m
American Airlines
Deal found 7/25![American Airlines logo]()
$347
This American Airlines deal was found by Cheapflights users on 7/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:00 am
STL
- SDF
1 stop4h 35m
American Airlines
Sun 8/306:30 pm
SDF
- STL
1 stop14h 54m
American Airlines
Deal found 7/24![American Airlines logo]()
$369
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 July 28, 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 July 28, 2026.
This United Airlines deal was found by Cheapflights users on 7/25. 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 8/221:05 pm
STL
- SDF
1 stop5h 01m
United Airlines
Sat 8/299:00 am
SDF
- STL
1 stop6h 57m
United Airlines
Deal found 7/25![United Airlines logo]()
$261
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:20 pm
STL
- SDF
1 stop5h 05m
Southwest
Mon 8/316:00 pm
SDF
- STL
1 stop5h 25m
Southwest
Deal found 7/27![Southwest logo]()
$261
This Southwest deal was found by Cheapflights users on 7/24. 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.
Tue 8/257:15 am
STL
- SDF
1 stop3h 55m
Southwest
Thu 8/277:55 am
SDF
- STL
1 stop4h 55m
Southwest
Deal found 7/24![Southwest logo]()
$261
This Southwest deal was found by Cheapflights users on 7/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/221:15 pm
STL
- SDF
2 stops6h 50m
Southwest
Sat 8/299:00 am
SDF
- STL
1 stop3h 05m
Southwest
Deal found 7/25![Southwest logo]()
$266
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/182:45 pm
STL
- SDF
1 stop4h 50m
Southwest
Wed 8/191:15 pm
SDF
- STL
2 stops7h 45m
Southwest
Deal found 7/27![Southwest logo]()
$266
This Southwest deal was found by Cheapflights users on 7/26. 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.
Wed 8/263:45 pm
STL
- SDF
1 stop3h 50m
Southwest
Tue 9/11:15 pm
SDF
- STL
2 stops7h 45m
Southwest
Deal found 7/26![Southwest logo]()
$266
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:50 pm
STL
- SDF
2 stops7h 40m
Southwest
Sun 8/307:35 am
SDF
- STL
2 stops6h 25m
Southwest
Deal found 7/27![Southwest logo]()
$338
This Southwest deal was found by Cheapflights users on 7/24. 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.
Fri 8/77:40 am
STL
- SDF
2 stops7h 00m
Southwest
Sat 8/81:15 pm
SDF
- STL
1 stop5h 55m
Southwest
Deal found 7/24![Southwest logo]()
$534
Last-minute flights from St. Louis to LouisvilleDiscover last-minute flight deals from St. Louis to Louisville. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Louisville. Data last updated July 28, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:15 am
STL
- SDF
2 stops7h 00m
Southwest
Wed 8/198:45 am
SDF
- STL
2 stops9h 00m
Southwest
Deal found 7/27![Southwest logo]()
$271
This American Airlines deal was found by Cheapflights users on 7/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:00 am
STL
- SDF
1 stop4h 35m
American Airlines
Sun 8/306:30 pm
SDF
- STL
1 stop14h 54m
American Airlines
Deal found 7/24![American Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:15 am
STL
- SDF
1 stop3h 55m
Southwest
Thu 8/277:55 am
SDF
- STL
1 stop4h 55m
Southwest
Deal found 7/27![Southwest logo]()
$261
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 8/2612:59 pm
STL
- SDF
1 stop5h 08m
United Airlines
Sun 8/305:10 am
SDF
- STL
1 stop6h 02m
United Airlines
Deal found 7/27![United Airlines logo]()
$328
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:50 pm
STL
- SDF
2 stops6h 45m
Southwest
Sun 8/304:05 pm
SDF
- STL
1 stop6h 00m
Southwest
Deal found 7/27![Southwest logo]()
$333
This Delta deal was found by Cheapflights users on 7/25. 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 8/282:10 pm
STL
- SDF
1 stop6h 09m
Delta
Thu 9/310:34 am
SDF
- STL
1 stop3h 40m
Delta
Deal found 7/25![Delta logo]()
$317
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Fri 8/289:32 am
STL
- SDF
2 stops10h 59m
American Airlines
Thu 9/36:30 pm
SDF
- STL
1 stop6h 44m
American Airlines
Deal found 7/25![American Airlines logo]()
$347
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 July 28, 2026.
Search for one-way flight options from St. Louis to Louisville. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This Southwest deal was found by Cheapflights users on 7/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:45 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 7/25![Southwest logo]()
$131
This Southwest deal was found by Cheapflights users on 7/23. 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.
Sun 9/66:45 am
STL
- SDF
2 stops6h 45m
Southwest
Deal found 7/23![Southwest logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:02 pm
STL
- SDF
3 stops24h 13m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$250
This Delta deal was found by Cheapflights users on 7/23. 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.
Mon 8/1012:52 pm
STL
- SDF
1 stop5h 38m
Delta
Deal found 7/23![Delta logo]()
$265
This Southwest deal was found by Cheapflights users on 7/23. 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.
Mon 8/1012:30 pm
STL
- SDF
2 stops8h 25m
Southwest
Deal found 7/23![Southwest logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:08 pm
STL
- SDF
3 stops41h 08m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Fri 8/74:57 pm
STL
- SDF
2 stops40h 35m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 7/23. 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.
Fri 7/311:54 pm
STL
- SDF
1 stop6h 18m
Delta
Deal found 7/23![Delta logo]()
$348
This Southwest deal was found by Cheapflights users on 7/23. 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.
Fri 7/313:35 pm
STL
- SDF
2 stops7h 55m
Southwest
Deal found 7/23![Southwest logo]()
$353
This Delta deal was found by Cheapflights users on 7/27. 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 7/3011:18 am
STL
- SDF
1 stop6h 51m
Delta
Deal found 7/27![Delta logo]()
$401
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 July 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $261 (Southwest) |
One-way from | $131 (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 2,558,603 searches. Data last updated July 28, 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
St. LouisLouisville
STL - SDF
STLSDF
Lambert-St Louis
Sat 8/22
1:05 pm-7:06 pm
1 stop5h 01m
Louisville Intl
Sat 8/29
9:00 am-2:57 pm
1 stop6h 57m
$261
St. LouisLouisville
STL - SDF
STLSDF
Lambert-St Louis
Mon 8/24
2:20 pm-8:25 pm
1 stop5h 05m
Louisville Intl
Mon 8/31
6:00 pm-10:25 pm
1 stop5h 25m
$261
Quickest round-trip
St. LouisLouisville
STL - SDF
STLSDF
Lambert-St Louis
Tue 8/25
7:15 am-12:10 pm
1 stop3h 55m
Louisville Intl
Thu 8/27
7:55 am-11:50 am
1 stop4h 55m
$261
St. LouisLouisville
STL - SDF
STLSDF
Lambert-St Louis
Sat 8/22
1:15 pm-9:05 pm
2 stops6h 50m
Louisville Intl
Sat 8/29
9:00 am-11:05 am
1 stop3h 05m
$266
St. LouisLouisville
STL - SDF
STLSDF
Lambert-St Louis
Tue 8/18
2:45 pm-8:35 pm
1 stop4h 50m
Louisville Intl
Wed 8/19
1:15 pm-8:00 pm
2 stops7h 45m
$266
St. LouisLouisville
STL - SDF
STLSDF
Lambert-St Louis
Wed 8/26
3:45 pm-8:35 pm
1 stop3h 50m
Louisville Intl
Tue 9/1
1:15 pm-8:00 pm
2 stops7h 45m
$266
St. LouisLouisville
STL - SDF
STLSDF
Lambert-St Louis
Wed 8/26
12:50 pm-9:30 pm
2 stops7h 40m
Louisville Intl
Sun 8/30
7:35 am-1:00 pm
2 stops6h 25m
$338
St. LouisLouisville
STL - SDF
STLSDF
Lambert-St Louis
Fri 8/7
7:40 am-3:40 pm
2 stops7h 00m
Louisville Intl
Sat 8/8
1:15 pm-6:10 pm
1 stop5h 55m
$534
Cheapest one-way
St. LouisLouisville
STL - SDF
STLSDF
Lambert-St Louis
Sat 9/5
5:45 am-10:10 am
1 stop3h 25m
$131
St. LouisLouisville
STL - SDF
STLSDF
Lambert-St Louis
Sat 9/5
5:02 pm-6:15 pm
3 stops24h 13m
$250
Showing 1-10 of 18 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 July.
| 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 locationsCorydon
Shepherdsville
Elizabethtown
Jeffersonville
Bardstown
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