$118+ 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
Jun 21 — Jun 281
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
Cheapest
Best
Last-minute
One-way
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 May 22, 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 May 22, 2026.
This American Airlines deal was found by Cheapflights users on 5/19. 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 6/98:05 pm
SDF
- STL
1 stop4h 39m
American Airlines
Wed 6/106:13 pm
STL
- SDF
1 stop5h 15m
American Airlines
Deal found 5/19![American Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 5/18. 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 6/95:25 pm
SDF
- STL
2 stops7h 15m
Southwest
Wed 6/105:20 pm
STL
- SDF
1 stop5h 55m
Southwest
Deal found 5/18![Southwest logo]()
$300
This Southwest deal was found by Cheapflights users on 5/19. 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 10/1612:55 pm
SDF
- STL
1 stop7h 10m
Southwest
Mon 10/191:50 pm
STL
- SDF
1 stop8h 05m
Southwest
Deal found 5/19![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 5/20. 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 6/177:25 am
SDF
- STL
2 stops8h 25m
Southwest
Wed 6/243:15 pm
STL
- SDF
2 stops6h 55m
Southwest
Deal found 5/20![Southwest logo]()
$355
This United Airlines deal was found by Cheapflights users on 5/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:00 am
SDF
- STL
1 stop4h 02m
United Airlines
Wed 8/195:30 pm
STL
- SDF
1 stop3h 58m
United Airlines
Deal found 5/17![United Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 5/19. 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 6/205:05 pm
SDF
- STL
1 stop3h 40m
Southwest
Sun 6/215:50 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 5/19![Southwest logo]()
$375
This Southwest deal was found by Cheapflights users on 5/20. 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 6/113:35 pm
SDF
- STL
1 stop4h 35m
Southwest
Sat 6/135:40 am
STL
- SDF
1 stop3h 20m
Southwest
Deal found 5/20![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 5/18. 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 6/188:05 pm
SDF
- STL
1 stop3h 45m
Southwest
Thu 6/255:20 pm
STL
- SDF
1 stop6h 05m
Southwest
Deal found 5/18![Southwest logo]()
$395
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 May 22, 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 May 22, 2026.
This Southwest deal was found by Cheapflights users on 5/19. 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 6/95:25 pm
SDF
- STL
2 stops7h 15m
Southwest
Wed 6/105:20 pm
STL
- SDF
1 stop5h 55m
Southwest
Deal found 5/19![Southwest logo]()
$300
This United Airlines deal was found by Cheapflights users on 5/18. 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 8/189:00 am
SDF
- STL
1 stop4h 02m
United Airlines
Wed 8/199:55 am
STL
- SDF
1 stop5h 43m
United Airlines
Deal found 5/18![United Airlines logo]()
$365
This United Airlines deal was found by Cheapflights users on 5/21. 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 8/47:15 am
SDF
- STL
1 stop5h 56m
United Airlines
Wed 8/59:30 am
STL
- SDF
1 stop6h 33m
United Airlines
Deal found 5/21![United Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 5/19. 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 6/205:05 pm
SDF
- STL
1 stop3h 40m
Southwest
Sun 6/215:50 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 5/19![Southwest logo]()
$375
This Southwest deal was found by Cheapflights users on 5/20. 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 6/113:35 pm
SDF
- STL
1 stop4h 35m
Southwest
Sat 6/135:40 am
STL
- SDF
1 stop3h 20m
Southwest
Deal found 5/20![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 5/22. 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 6/136:05 pm
SDF
- STL
1 stop5h 10m
Southwest
Sun 6/146:15 pm
STL
- SDF
1 stop3h 55m
Southwest
Deal found 5/22![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 5/17. 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.
Thu 7/23:00 pm
SDF
- STL
1 stop5h 10m
Southwest
Sun 7/56:45 pm
STL
- SDF
1 stop4h 25m
Southwest
Deal found 5/17![Southwest logo]()
$395
Last-minute flights from Louisville to St. LouisDiscover last-minute flight deals from Louisville to St. Louis. Data last updated May 22, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to St. Louis. Data last updated May 22, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/19. 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 6/98:05 pm
SDF
- STL
1 stop4h 39m
American Airlines
Wed 6/106:13 pm
STL
- SDF
1 stop5h 15m
American Airlines
Deal found 5/19![American Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 5/18. 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 6/95:25 pm
SDF
- STL
2 stops7h 15m
Southwest
Wed 6/105:20 pm
STL
- SDF
1 stop5h 55m
Southwest
Deal found 5/18![Southwest logo]()
$300
This Southwest deal was found by Cheapflights users on 5/20. 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 6/113:35 pm
SDF
- STL
1 stop4h 35m
Southwest
Sat 6/135:40 am
STL
- SDF
1 stop3h 20m
Southwest
Deal found 5/20![Southwest logo]()
$385
This American Airlines deal was found by Cheapflights users on 5/19. 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 6/128:08 pm
SDF
- STL
1 stop4h 36m
American Airlines
Fri 6/196:13 pm
STL
- SDF
1 stop5h 15m
American Airlines
Deal found 5/19![American Airlines logo]()
$405
This Southwest deal was found by Cheapflights users on 5/20. 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 6/177:25 am
SDF
- STL
2 stops8h 25m
Southwest
Wed 6/243:15 pm
STL
- SDF
2 stops6h 55m
Southwest
Deal found 5/20![Southwest logo]()
$355
This Southwest deal was found by Cheapflights users on 5/18. 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 6/188:05 pm
SDF
- STL
1 stop3h 45m
Southwest
Thu 6/255:20 pm
STL
- SDF
1 stop6h 05m
Southwest
Deal found 5/18![Southwest logo]()
$395
This Southwest deal was found by Cheapflights users on 5/19. 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 6/205:05 pm
SDF
- STL
1 stop3h 40m
Southwest
Sun 6/215:50 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 5/19![Southwest logo]()
$375
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 May 22, 2026.
Search for one-way flight options from Louisville to St. Louis. Find affordable one-way fares based on user searches. Data last updated May 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 6/159:05 pm
SDF
- STL
2 stops36h 47m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 6/178:06 pm
SDF
- STL
2 stops22h 24m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$131
This Delta deal was found by Cheapflights users on 5/18. 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 6/167:49 am
SDF
- STL
1 stop6h 20m
Delta
Deal found 5/18![Delta logo]()
$148
This Southwest deal was found by Cheapflights users on 5/18. 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 6/164:15 pm
SDF
- STL
2 stops7h 45m
Southwest
Deal found 5/18![Southwest logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 6/19:10 pm
SDF
- STL
2 stops36h 45m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 6/188:49 pm
SDF
- STL
2 stops37h 03m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$177
This United Airlines deal was found by Cheapflights users on 5/18. 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.
Thu 5/289:00 am
SDF
- STL
1 stop6h 23m
United Airlines
Deal found 5/18![United Airlines logo]()
$178
This Southwest deal was found by Cheapflights users on 5/18. 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 5/282:40 pm
SDF
- STL
2 stops7h 15m
Southwest
Deal found 5/18![Southwest logo]()
$183
This American Airlines deal was found by Cheapflights users on 5/18. 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 6/163:22 pm
SDF
- STL
2 stops9h 54m
American Airlines
Deal found 5/18![American Airlines logo]()
$188
This United Airlines deal was found by Cheapflights users on 5/18. 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.
Thu 6/186:00 pm
SDF
- STL
1 stop4h 30m
United Airlines
Deal found 5/18![United Airlines logo]()
$198
This United Airlines deal was found by Cheapflights users on 5/18. 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 6/156:00 pm
SDF
- STL
1 stop4h 30m
United Airlines
Deal found 5/18![United Airlines logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 6/38:06 pm
SDF
- STL
2 stops39h 23m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$211
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 May 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $295 (American Airlines) |
One-way from | $118 (Kiwi.com) |
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 May 22, 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 6/9
5:25 pm-11:40 pm
2 stops7h 15m
Lambert-St Louis
Wed 6/10
5:20 pm-12:15 am
1 stop5h 55m
$300
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Tue 8/18
9:00 am-12:02 pm
1 stop4h 02m
Lambert-St Louis
Wed 8/19
9:55 am-4:38 pm
1 stop5h 43m
$365
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Tue 8/4
7:15 am-12:11 pm
1 stop5h 56m
Lambert-St Louis
Wed 8/5
9:30 am-5:03 pm
1 stop6h 33m
$365
Quickest round-trip
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Sat 6/20
5:05 pm-7:45 pm
1 stop3h 40m
Lambert-St Louis
Sun 6/21
5:50 am-10:15 am
1 stop3h 25m
$375
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Thu 6/11
3:35 pm-7:10 pm
1 stop4h 35m
Lambert-St Louis
Sat 6/13
5:40 am-10:00 am
1 stop3h 20m
$385
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Sat 6/13
6:05 pm-10:15 pm
1 stop5h 10m
Lambert-St Louis
Sun 6/14
6:15 pm-11:10 pm
1 stop3h 55m
$385
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Thu 7/2
3:00 pm-7:10 pm
1 stop5h 10m
Lambert-St Louis
Sun 7/5
6:45 pm-12:10 am
1 stop4h 25m
$395
Cheapest one-way
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Tue 6/16
8:05 pm-11:44 pm
1 stop4h 39m
$148
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 6/17
2:19 pm-5:23 pm
1 stop4h 04m
$148
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Tue 6/16
4:15 pm-11:00 pm
2 stops7h 45m
$153
Showing 1-10 of 16 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 May.
| 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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