$131+ 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 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
Jul 31 — Aug 71
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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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 July 1, 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 July 1, 2026.
This Southwest deal was found by Cheapflights users on 6/30. 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 8/86:45 am
SDF
- STL
2 stops7h 30m
Southwest
Mon 8/103:45 pm
STL
- SDF
1 stop3h 45m
Southwest
Deal found 6/30![Southwest logo]()
$315
This Southwest deal was found by Cheapflights users on 6/29. 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 9/16:00 am
SDF
- STL
1 stop7h 40m
Southwest
Fri 9/44:15 pm
STL
- SDF
1 stop5h 20m
Southwest
Deal found 6/29![Southwest logo]()
$328
This United Airlines deal was found by Cheapflights users on 6/29. 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 10/209:04 am
SDF
- STL
1 stop4h 09m
United Airlines
Wed 10/211:29 pm
STL
- SDF
1 stop6h 02m
United Airlines
Deal found 6/29![United Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 6/29. 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 7/247:50 am
SDF
- STL
1 stop6h 15m
Delta
Tue 7/2810:19 am
STL
- SDF
1 stop5h 28m
Delta
Deal found 6/29![Delta logo]()
$368
This American Airlines deal was found by Cheapflights users on 6/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:19 pm
SDF
- STL
1 stop4h 39m
American Airlines
Tue 7/281:25 pm
STL
- SDF
1 stop4h 10m
American Airlines
Deal found 6/26![American Airlines logo]()
$387
This American Airlines deal was found by Cheapflights users on 6/29. 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 7/238:15 am
SDF
- STL
1 stop4h 40m
American Airlines
Mon 7/275:10 am
STL
- SDF
1 stop5h 14m
American Airlines
Deal found 6/29![American Airlines logo]()
$415
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 July 1, 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 July 1, 2026.
This Southwest deal was found by Cheapflights users on 6/30. 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 8/812:40 pm
SDF
- STL
1 stop5h 00m
Southwest
Mon 8/102:20 pm
STL
- SDF
1 stop5h 05m
Southwest
Deal found 6/30![Southwest logo]()
$324
This Delta deal was found by Cheapflights users on 6/30. 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 8/217:05 am
SDF
- STL
1 stop3h 49m
Delta
Fri 8/212:10 pm
STL
- SDF
1 stop6h 09m
Delta
Deal found 6/30![Delta logo]()
$457
This American Airlines deal was found by Cheapflights users on 6/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:19 pm
SDF
- STL
1 stop4h 38m
American Airlines
Wed 7/157:32 am
STL
- SDF
1 stop6h 31m
American Airlines
Deal found 6/26![American Airlines logo]()
$519
This United Airlines deal was found by Cheapflights users on 6/29. 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 7/155:50 pm
SDF
- STL
1 stop4h 36m
United Airlines
Sun 7/195:59 pm
STL
- SDF
1 stop5h 00m
United Airlines
Deal found 6/29![United Airlines logo]()
$575
This Southwest deal was found by Cheapflights users on 6/29. 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 9/16:00 am
SDF
- STL
1 stop7h 40m
Southwest
Fri 9/44:15 pm
STL
- SDF
1 stop5h 20m
Southwest
Deal found 6/29![Southwest logo]()
$328
This Delta deal was found by Cheapflights users on 6/30. 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 7/1510:00 am
SDF
- STL
1 stop5h 48m
Delta
Sun 7/196:58 pm
STL
- SDF
1 stop4h 28m
Delta
Deal found 6/30![Delta logo]()
$519
This Southwest deal was found by Cheapflights users on 6/25. 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.
Mon 7/133:35 pm
SDF
- STL
1 stop4h 35m
Southwest
Fri 7/174:25 pm
STL
- SDF
2 stops7h 05m
Southwest
Deal found 6/25![Southwest logo]()
$472
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/179:00 am
SDF
- STL
1 stop4h 11m
United Airlines
Mon 7/205:59 pm
STL
- SDF
2 stops19h 38m
United Airlines
Deal found 6/27![United Airlines logo]()
$595
This Southwest deal was found by Cheapflights users on 6/29. 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 7/145:35 am
SDF
- STL
1 stop6h 55m
Southwest
Sat 7/184:40 pm
STL
- SDF
1 stop4h 05m
Southwest
Deal found 6/29![Southwest logo]()
$519
This Southwest deal was found by Cheapflights users on 6/27. 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.
Sun 7/128:00 pm
SDF
- STL
1 stop3h 55m
Southwest
Thu 7/165:00 am
STL
- SDF
1 stop5h 25m
Southwest
Deal found 6/27![Southwest logo]()
$519
This Southwest deal was found by Cheapflights users on 6/26. 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.
Sat 7/119:00 am
SDF
- STL
2 stops9h 55m
Southwest
Wed 7/159:40 am
STL
- SDF
1 stop4h 55m
Southwest
Deal found 6/26![Southwest logo]()
$524
This Southwest deal was found by Cheapflights users on 6/30. 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 7/156:05 am
SDF
- STL
2 stops7h 30m
Southwest
Sun 7/193:45 pm
STL
- SDF
1 stop6h 35m
Southwest
Deal found 6/30![Southwest logo]()
$524
Last-minute flights from Louisville to St. LouisDiscover last-minute flight deals from Louisville to St. Louis. Data last updated July 1, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to St. Louis. Data last updated July 1, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:19 pm
SDF
- STL
1 stop4h 38m
American Airlines
Wed 7/157:32 am
STL
- SDF
1 stop6h 31m
American Airlines
Deal found 6/26![American Airlines logo]()
$519
This Southwest deal was found by Cheapflights users on 6/26. 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.
Sat 7/119:00 am
SDF
- STL
2 stops9h 55m
Southwest
Wed 7/159:40 am
STL
- SDF
1 stop4h 55m
Southwest
Deal found 6/26![Southwest logo]()
$524
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:28 pm
SDF
- STL
1 stop4h 09m
Delta
Fri 7/176:30 am
STL
- SDF
1 stop6h 12m
Delta
Deal found 6/25![Delta logo]()
$467
This Southwest deal was found by Cheapflights users on 6/25. 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.
Mon 7/133:35 pm
SDF
- STL
1 stop4h 35m
Southwest
Fri 7/174:25 pm
STL
- SDF
2 stops7h 05m
Southwest
Deal found 6/25![Southwest logo]()
$472
This American Airlines deal was found by Cheapflights users on 6/29. 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 7/238:15 am
SDF
- STL
1 stop4h 40m
American Airlines
Mon 7/275:10 am
STL
- SDF
1 stop5h 14m
American Airlines
Deal found 6/29![American Airlines logo]()
$415
This Southwest deal was found by Cheapflights users on 6/29. 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 7/235:50 am
SDF
- STL
1 stop6h 00m
Southwest
Mon 7/274:35 pm
STL
- SDF
2 stops6h 55m
Southwest
Deal found 6/29![Southwest logo]()
$420
This Delta deal was found by Cheapflights users on 6/29. 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 7/247:50 am
SDF
- STL
1 stop6h 15m
Delta
Tue 7/2810:19 am
STL
- SDF
1 stop5h 28m
Delta
Deal found 6/29![Delta logo]()
$368
This American Airlines deal was found by Cheapflights users on 6/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:19 pm
SDF
- STL
1 stop4h 39m
American Airlines
Tue 7/281:25 pm
STL
- SDF
1 stop4h 10m
American Airlines
Deal found 6/26![American Airlines logo]()
$387
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 July 1, 2026.
Search for one-way flight options from Louisville to St. Louis. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
This Southwest deal was found by Cheapflights users on 6/26. 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.
Sat 7/254:10 pm
SDF
- STL
1 stop8h 20m
Southwest
Deal found 6/26![Southwest logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 6/26. 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.
Sat 7/258:06 pm
SDF
- STL
2 stops37h 51m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 6/30. 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 8/215:25 pm
SDF
- STL
1 stop4h 17m
Delta
Deal found 6/30![Delta logo]()
$198
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:10 am
SDF
- STL
1 stop4h 02m
United Airlines
Deal found 6/30![United Airlines logo]()
$233
This Delta deal was found by Cheapflights users on 6/30. 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 7/178:10 am
SDF
- STL
1 stop5h 07m
Delta
Deal found 6/30![Delta logo]()
$260
This Southwest deal was found by Cheapflights users on 6/30. 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 7/176:05 pm
SDF
- STL
2 stops7h 35m
Southwest
Deal found 6/30![Southwest logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:06 pm
SDF
- STL
2 stops22h 31m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 7/178:28 pm
SDF
- STL
3 stops43h 28m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 6/30. 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 7/112:55 pm
SDF
- STL
1 stop7h 40m
Southwest
Deal found 6/30![Southwest logo]()
$343
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 July 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $315 (Southwest) |
One-way from | $131 (Southwest) |
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 July 1, 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
Sat 8/8
12:40 pm-4:40 pm
1 stop5h 00m
Lambert-St Louis
Mon 8/10
2:20 pm-8:25 pm
1 stop5h 05m
$324
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Tue 9/1
6:00 am-12:40 pm
1 stop7h 40m
Lambert-St Louis
Fri 9/4
4:15 pm-10:35 pm
1 stop5h 20m
$328
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Fri 8/21
7:05 am-9:54 am
1 stop3h 49m
Lambert-St Louis
Fri 8/21
2:10 pm-9:19 pm
1 stop6h 09m
$457
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Mon 7/13
3:35 pm-7:10 pm
1 stop4h 35m
Lambert-St Louis
Fri 7/17
4:25 pm-12:30 am
2 stops7h 05m
$472
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Sat 7/11
8:19 pm-11:57 pm
1 stop4h 38m
Lambert-St Louis
Wed 7/15
7:32 am-3:03 pm
1 stop6h 31m
$519
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 7/15
10:00 am-2:48 pm
1 stop5h 48m
Lambert-St Louis
Sun 7/19
6:58 pm-12:26 am
1 stop4h 28m
$519
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Tue 7/14
5:35 am-11:30 am
1 stop6h 55m
Lambert-St Louis
Sat 7/18
4:40 pm-9:45 pm
1 stop4h 05m
$519
Quickest round-trip
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Sun 7/12
8:00 pm-10:55 pm
1 stop3h 55m
Lambert-St Louis
Thu 7/16
5:00 am-11:25 am
1 stop5h 25m
$519
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Sat 7/11
9:00 am-5:55 pm
2 stops9h 55m
Lambert-St Louis
Wed 7/15
9:40 am-3:35 pm
1 stop4h 55m
$524
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 7/15
6:05 am-12:35 pm
2 stops7h 30m
Lambert-St Louis
Sun 7/19
3:45 pm-11:20 pm
1 stop6h 35m
$524
Showing 1-10 of 20 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 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 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
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
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