$193+ Cheap flights from Louisville to St. Louis (SDF - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
Nov 19 — Nov 261
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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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 October 20, 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 October 20, 2026.
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:40 pm -
1 stop3h 49m
Tue 11/1710:20 am -
1 stop5h 57m
Deal found 10/20![Delta logo]()
$251
This Delta deal was found by Cheapflights users on 10/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:04 pm -
1 stop6h 09m
Thu 12/36:32 am -
1 stop6h 57m
Deal found 10/19![Delta logo]()
$263
This Delta deal was found by Cheapflights users on 10/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:05 am -
1 stop6h 18m
Wed 11/182:31 pm -
1 stop6h 11m
Deal found 10/19![Delta logo]()
$269
This Southwest deal was found by Cheapflights users on 10/19. 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.
Wed 12/25:40 am -
2 stops6h 20m
Thu 12/311:55 am -
2 stops7h 40m
Deal found 10/19![Southwest logo]()
$274
This Southwest deal was found by Cheapflights users on 10/19. 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 11/178:50 am -
2 stops5h 50m
Wed 11/186:35 am -
1 stop5h 25m
Deal found 10/19![Southwest logo]()
$275
This Southwest deal was found by Cheapflights users on 10/20. 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.
Fri 12/47:35 pm -
1 stop3h 25m
Fri 12/115:40 am -
1 stop3h 25m
Deal found 10/20![Southwest logo]()
$281
This Southwest deal was found by Cheapflights users on 10/19. 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 11/208:45 am -
1 stop4h 35m
Sun 11/225:45 am -
1 stop3h 20m
Deal found 10/19![Southwest logo]()
$315
This American Airlines deal was found by Cheapflights users on 10/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:44 am -
2 stops7h 59m
Tue 11/1711:35 am -
1 stop4h 38m
Deal found 10/20![American Airlines logo]()
$325
This Delta deal was found by Cheapflights users on 10/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:49 am -
1 stop5h 58m
Sat 11/215:30 pm -
1 stop4h 43m
Deal found 10/17![Delta logo]()
$349
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 October 20, 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 October 20, 2026.
This Delta deal was found by Cheapflights users on 10/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:04 pm -
1 stop6h 09m
Thu 12/36:32 am -
1 stop6h 57m
Deal found 10/19![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 10/20. 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.
Fri 12/43:50 pm -
2 stops7h 10m
Fri 12/114:30 pm -
2 stops6h 55m
Deal found 10/20![Southwest logo]()
$291
This Southwest deal was found by Cheapflights users on 10/19. 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 11/208:45 am -
1 stop4h 35m
Sun 11/225:45 am -
1 stop3h 20m
Deal found 10/19![Southwest logo]()
$315
This Delta deal was found by Cheapflights users on 10/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:49 am -
1 stop5h 58m
Sat 11/215:30 pm -
1 stop4h 43m
Deal found 10/17![Delta logo]()
$349
This Southwest deal was found by Cheapflights users on 10/16. 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.
Mon 12/145:55 pm -
1 stop5h 30m
Mon 12/215:45 am -
1 stop5h 05m
Deal found 10/16![Southwest logo]()
$349
This Southwest deal was found by Cheapflights users on 10/17. 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.
Sat 11/147:10 am -
2 stops8h 00m
Sat 11/215:30 am -
1 stop3h 45m
Deal found 10/17![Southwest logo]()
$354
This Southwest deal was found by Cheapflights users on 10/17. 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.
Tue 11/177:20 am -
2 stops7h 30m
Tue 11/245:45 am -
2 stops10h 15m
Deal found 10/17![Southwest logo]()
$411
This Southwest deal was found by Cheapflights users on 10/17. 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.
Sat 12/1212:45 pm -
2 stops8h 15m
Wed 12/1610:30 am -
2 stops9h 05m
Deal found 10/17![Southwest logo]()
$415
This Southwest deal was found by Cheapflights users on 10/18. 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 11/193:50 pm -
2 stops7h 10m
Sun 11/224:30 pm -
1 stop4h 45m
Deal found 10/18![Southwest logo]()
$430
This Southwest deal was found by Cheapflights users on 10/17. 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.
Sat 12/195:40 am -
1 stop4h 40m
Mon 12/218:20 am -
2 stops7h 40m
Deal found 10/17![Southwest logo]()
$430
Last-minute flights from Louisville to St. LouisDiscover last-minute flight deals from Louisville to St. Louis. Data last updated October 20, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to St. Louis. Data last updated October 20, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:40 pm -
1 stop3h 49m
Tue 11/1710:20 am -
1 stop5h 57m
Deal found 10/20![Delta logo]()
$251
This American Airlines deal was found by Cheapflights users on 10/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:44 am -
2 stops7h 59m
Tue 11/1711:35 am -
1 stop4h 38m
Deal found 10/20![American Airlines logo]()
$325
This Delta deal was found by Cheapflights users on 10/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:49 am -
1 stop5h 58m
Sat 11/215:30 pm -
1 stop4h 43m
Deal found 10/17![Delta logo]()
$349
This Southwest deal was found by Cheapflights users on 10/17. 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.
Sat 11/147:10 am -
2 stops8h 00m
Sat 11/215:30 am -
1 stop3h 45m
Deal found 10/17![Southwest logo]()
$354
This American Airlines deal was found by Cheapflights users on 10/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1411:57 am -
2 stops7h 20m
Sat 11/211:25 pm -
2 stops9h 44m
Deal found 10/17![American Airlines logo]()
$380
This Delta deal was found by Cheapflights users on 10/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:05 am -
1 stop6h 18m
Wed 11/182:31 pm -
1 stop6h 11m
Deal found 10/19![Delta logo]()
$269
This Southwest deal was found by Cheapflights users on 10/19. 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 11/178:50 am -
2 stops5h 50m
Wed 11/186:35 am -
1 stop5h 25m
Deal found 10/19![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 10/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/171:01 pm -
1 stop4h 42m
Tue 11/2410:20 am -
1 stop5h 57m
Deal found 10/17![Delta logo]()
$385
This Southwest deal was found by Cheapflights users on 10/17. 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.
Tue 11/175:40 am -
2 stops6h 20m
Tue 11/2410:15 am -
1 stop6h 35m
Deal found 10/17![Southwest logo]()
$390
This Southwest deal was found by Cheapflights users on 10/19. 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 11/208:45 am -
1 stop4h 35m
Sun 11/225:45 am -
1 stop3h 20m
Deal found 10/19![Southwest logo]()
$315
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 October 20, 2026.
Search for one-way flight options from Louisville to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/147:00 am -
1 stop4h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$193
This Southwest deal was found by Cheapflights users on 10/20. 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 4/146:30 am -
2 stops7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Southwest logo]()
$198
This United Airlines deal was found by Cheapflights users on 10/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/147:30 am -
3 stops13h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![United Airlines logo]()
$602
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/146:00 am -
3 stops33h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$1,095
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 October 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $251 (Delta) |
One-way from | $193 (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 7,457,451 searches. Data last updated October 20, 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
Quickest round-trip
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Wed 4/14
7:20 am-1:20 pm
1 stop7h 00m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$193
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Wed 4/14
6:30 am-12:35 pm
2 stops7h 05m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$198
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Wed 12/2
1:04 pm-6:13 pm
1 stop6h 09m
Lambert-St Louis
Thu 12/3
6:32 am-2:29 pm
1 stop6h 57m
$263
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Fri 12/4
3:50 pm-10:00 pm
2 stops7h 10m
Lambert-St Louis
Fri 12/11
4:30 pm-12:25 am
2 stops6h 55m
$291
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Fri 11/20
8:45 am-12:20 pm
1 stop4h 35m
Lambert-St Louis
Sun 11/22
5:45 am-10:05 am
1 stop3h 20m
$315
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Sat 11/14
10:49 am-3:47 pm
1 stop5h 58m
Lambert-St Louis
Sat 11/21
5:30 pm-11:13 pm
1 stop4h 43m
$349
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Mon 12/14
5:55 pm-10:25 pm
1 stop5h 30m
Lambert-St Louis
Mon 12/21
5:45 am-11:50 am
1 stop5h 05m
$349
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Sat 11/14
7:10 am-2:10 pm
2 stops8h 00m
Lambert-St Louis
Sat 11/21
5:30 am-10:15 am
1 stop3h 45m
$354
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Tue 11/17
7:20 am-1:50 pm
2 stops7h 30m
Lambert-St Louis
Tue 11/24
5:45 am-5:00 pm
2 stops10h 15m
$411
LouisvilleSt. Louis
SDF Louisville Intl - STL Lambert-St Louis
SDFSTL
Louisville Intl
Sat 12/12
12:45 pm-8:00 pm
2 stops8h 15m
Lambert-St Louis
Wed 12/16
10:30 am-8:35 pm
2 stops9h 05m
$415
Showing 1-10 of 13 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 October.
| 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 locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Chesterfield
Collinsville
Edwardsville
Glencoe
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