$138+ Cheap flights from Louisville to St. Louis (SDF - STL)
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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
May 17 — May 241
Round-trip
1 adult, Economy
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Find cheap flights from Louisville to St. Louis 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 Louisville to St. Louis
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Best
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Cheapest flights from Louisville to St. LouisExplore the most affordable flight options available from Louisville to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
Explore the most affordable flight options available from Louisville to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
This Delta deal was found by Cheapflights users on 4/13. 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 6/166:00 am
SDF
- STL
1 stop4h 46m
Delta
Wed 6/171:39 pm
STL
- SDF
1 stop6h 40m
Delta
Deal found 4/13![Delta logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 6/159:15 pm
SDF
- STL
2 stops36h 37m
Multiple Airlines
Wed 6/244:17 pm
STL
- SDF
1 stop21h 24m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 4/14. 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 5/1212:10 pm
SDF
- STL
1 stop6h 50m
Southwest
Tue 5/195:45 am
STL
- SDF
2 stops8h 00m
Southwest
Deal found 4/14![Southwest logo]()
$280
This Southwest deal was found by Cheapflights users on 4/14. 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 5/123:30 pm
SDF
- STL
2 stops7h 30m
Southwest
Wed 5/131:45 pm
STL
- SDF
2 stops6h 20m
Southwest
Deal found 4/14![Southwest logo]()
$285
This Southwest deal was found by Cheapflights users on 4/16. 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 5/306:40 am
SDF
- STL
1 stop2h 45m
Southwest
Wed 6/31:45 pm
STL
- SDF
1 stop5h 50m
Southwest
Deal found 4/16![Southwest logo]()
$288
This Southwest deal was found by Cheapflights users on 4/17. 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 5/271:35 pm
SDF
- STL
1 stop5h 20m
Southwest
Thu 5/285:40 am
STL
- SDF
1 stop3h 15m
Southwest
Deal found 4/17![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 4/15. 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 5/1312:10 pm
SDF
- STL
2 stops8h 50m
Southwest
Sat 5/165:40 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 4/15![Southwest logo]()
$298
This Southwest deal was found by Cheapflights users on 4/15. 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 5/145:45 am
SDF
- STL
1 stop6h 05m
Southwest
Thu 5/215:05 am
STL
- SDF
1 stop5h 30m
Southwest
Deal found 4/15![Southwest logo]()
$311
Best flights from Louisville to St. LouisDiscover carefully curated flight deals from Louisville to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
Discover carefully curated flight deals from Louisville to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
This Delta deal was found by Cheapflights users on 4/13. 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 6/166:38 pm
SDF
- STL
1 stop6h 18m
Delta
Tue 6/2310:51 am
STL
- SDF
1 stop5h 59m
Delta
Deal found 4/13![Delta logo]()
$275
This Southwest deal was found by Cheapflights users on 4/14. 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 5/123:30 pm
SDF
- STL
2 stops7h 30m
Southwest
Wed 5/131:45 pm
STL
- SDF
2 stops6h 20m
Southwest
Deal found 4/14![Southwest logo]()
$285
This American Airlines deal was found by Cheapflights users on 4/15. 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 5/275:43 pm
SDF
- STL
1 stop7h 01m
American Airlines
Mon 6/16:12 pm
STL
- SDF
1 stop5h 16m
American Airlines
Deal found 4/15![American Airlines logo]()
$293
This United Airlines deal was found by Cheapflights users on 4/13. 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 6/210:02 am
SDF
- STL
1 stop6h 44m
United Airlines
Wed 6/35:41 pm
STL
- SDF
1 stop3h 49m
United Airlines
Deal found 4/13![United Airlines logo]()
$345
This Delta deal was found by Cheapflights users on 4/15. 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.
Wed 5/137:49 pm
SDF
- STL
1 stop4h 32m
Delta
Sat 5/164:00 pm
STL
- SDF
1 stop5h 11m
Delta
Deal found 4/15![Delta logo]()
$275
This Delta deal was found by Cheapflights users on 4/16. 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.
Wed 5/277:49 pm
SDF
- STL
1 stop4h 32m
Delta
Mon 6/15:20 pm
STL
- SDF
1 stop4h 16m
Delta
Deal found 4/16![Delta logo]()
$293
This Southwest deal was found by Cheapflights users on 4/13. 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 5/154:45 pm
SDF
- STL
2 stops7h 00m
Southwest
Wed 5/205:35 am
STL
- SDF
1 stop3h 15m
Southwest
Deal found 4/13![Southwest logo]()
$340
This Delta deal was found by Cheapflights users on 4/12. 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 6/26:05 am
SDF
- STL
1 stop5h 27m
Delta
Thu 6/49:13 am
STL
- SDF
1 stop6h 48m
Delta
Deal found 4/12![Delta logo]()
$293
This Delta deal was found by Cheapflights users on 4/15. 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 5/146:05 am
SDF
- STL
1 stop5h 27m
Delta
Thu 5/216:45 am
STL
- SDF
1 stop6h 06m
Delta
Deal found 4/15![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 4/13. 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.
Wed 6/178:11 am
SDF
- STL
1 stop5h 23m
Delta
Sat 6/205:42 pm
STL
- SDF
1 stop4h 18m
Delta
Deal found 4/13![Delta logo]()
$335
This Delta deal was found by Cheapflights users on 4/13. 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.
Wed 6/178:11 am
SDF
- STL
1 stop5h 23m
Delta
Sun 6/217:12 pm
STL
- SDF
1 stop4h 20m
Delta
Deal found 4/13![Delta logo]()
$335
Last-minute flights from Louisville to St. LouisDiscover last-minute flight deals from Louisville to St. Louis. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to St. Louis. Data last updated April 17, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 4/14. 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 5/123:45 pm
SDF
- STL
1 stop6h 20m
Southwest
Tue 5/192:30 pm
STL
- SDF
1 stop5h 35m
Southwest
Deal found 4/14![Southwest logo]()
$275
This Southwest deal was found by Cheapflights users on 4/15. 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 5/1312:10 pm
SDF
- STL
2 stops8h 50m
Southwest
Sat 5/165:40 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 4/15![Southwest logo]()
$298
This Southwest deal was found by Cheapflights users on 4/15. 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 5/145:45 am
SDF
- STL
1 stop6h 05m
Southwest
Thu 5/215:05 am
STL
- SDF
1 stop5h 30m
Southwest
Deal found 4/15![Southwest logo]()
$311
This Delta deal was found by Cheapflights users on 4/13. 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 5/157:59 pm
SDF
- STL
1 stop5h 00m
Delta
Wed 5/206:21 am
STL
- SDF
1 stop4h 38m
Delta
Deal found 4/13![Delta logo]()
$335
This Delta deal was found by Cheapflights users on 4/13. 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.
Wed 5/2712:42 pm
SDF
- STL
1 stop5h 04m
Delta
Mon 6/15:20 pm
STL
- SDF
1 stop6h 05m
Delta
Deal found 4/13![Delta logo]()
$293
This Southwest deal was found by Cheapflights users on 4/17. 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 5/276:20 am
SDF
- STL
2 stops7h 30m
Southwest
Thu 5/282:10 pm
STL
- SDF
2 stops8h 35m
Southwest
Deal found 4/17![Southwest logo]()
$326
This Southwest deal was found by Cheapflights users on 4/16. 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 5/306:40 am
SDF
- STL
1 stop2h 45m
Southwest
Wed 6/31:45 pm
STL
- SDF
1 stop5h 50m
Southwest
Deal found 4/16![Southwest logo]()
$288
One-way flights from Louisville to St. LouisSearch for one-way flight options from Louisville to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
Search for one-way flight options from Louisville to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Delta deal was found by Cheapflights users on 4/13. 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 6/166:00 am
SDF
- STL
1 stop4h 46m
Delta
Deal found 4/13![Delta logo]()
$138
This Delta deal was found by Cheapflights users on 4/13. 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 6/154:40 pm
SDF
- STL
1 stop6h 34m
Delta
Deal found 4/13![Delta logo]()
$198
This Southwest deal was found by Cheapflights users on 4/13. 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 6/186:05 pm
SDF
- STL
2 stops7h 30m
Southwest
Deal found 4/13![Southwest logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/17:48 pm
SDF
- STL
3 stops39h 43m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$218
This American Airlines deal was found by Cheapflights users on 4/13. 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 6/2011:50 am
SDF
- STL
2 stops9h 36m
American Airlines
Deal found 4/13![American Airlines logo]()
$238
This American Airlines deal was found by Cheapflights users on 4/14. 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 5/19:43 am
SDF
- STL
1 stop4h 39m
American Airlines
Deal found 4/14![American Airlines logo]()
$241
This Southwest deal was found by Cheapflights users on 4/14. 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 5/14:45 pm
SDF
- STL
2 stops7h 00m
Southwest
Deal found 4/14![Southwest logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 4/232:26 pm
SDF
- STL
3 stops41h 24m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$270
This American Airlines deal was found by Cheapflights users on 4/13. 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 6/171:21 pm
SDF
- STL
2 stops11h 35m
American Airlines
Deal found 4/13![American Airlines logo]()
$288
Find flight deals from Louisville to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to St. Louis (STL). 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 April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $275 (Delta) |
One-way from | $138 (Delta) |
Cheapflights Fare Finder
Customize your flight search to find flights from Louisville to St. Louis 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 April 17, 2026.
Use the filters below to find and compare flights from Louisville to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Tue 6/16
6:38 pm-11:56 pm
1 stop6h 18m
Lambert-St Louis
Tue 6/23
10:51 am-5:50 pm
1 stop5h 59m
$275
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 5/13
7:49 pm-11:21 pm
1 stop4h 32m
Lambert-St Louis
Sat 5/16
4:00 pm-10:11 pm
1 stop5h 11m
$275
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Tue 5/12
3:30 pm-10:00 pm
2 stops7h 30m
Lambert-St Louis
Wed 5/13
1:45 pm-9:05 pm
2 stops6h 20m
$285
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 5/27
5:43 pm-11:44 pm
1 stop7h 01m
Lambert-St Louis
Mon 6/1
6:12 pm-12:28 am
1 stop5h 16m
$293
Quickest round-trip
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 5/27
7:49 pm-11:21 pm
1 stop4h 32m
Lambert-St Louis
Mon 6/1
5:20 pm-10:36 pm
1 stop4h 16m
$293
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Tue 6/2
6:05 am-10:32 am
1 stop5h 27m
Lambert-St Louis
Thu 6/4
9:13 am-5:01 pm
1 stop6h 48m
$293
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Thu 5/14
6:05 am-10:32 am
1 stop5h 27m
Lambert-St Louis
Thu 5/21
6:45 am-1:51 pm
1 stop6h 06m
$311
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 6/17
8:11 am-12:34 pm
1 stop5h 23m
Lambert-St Louis
Sat 6/20
5:42 pm-11:00 pm
1 stop4h 18m
$335
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 6/17
8:11 am-12:34 pm
1 stop5h 23m
Lambert-St Louis
Sun 6/21
7:12 pm-12:32 am
1 stop4h 20m
$335
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Fri 5/15
4:45 pm-10:45 pm
2 stops7h 00m
Lambert-St Louis
Wed 5/20
5:35 am-9:50 am
1 stop3h 15m
$340
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Louisville to St. Louis
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 Louisville to St. Louis in April.
| 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 Louisville-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Louisville-St. Louis 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 Louisville-St. Louis 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 Louisville to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Louisville with our price prediction graph.
SDF-STL
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 Louisville to St. Louis. 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 St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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