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$131+ Cheap flights from St. Louis to Louisville (STL - SDF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SDF
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from St. Louis to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Louisville (SDF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$191
(American Airlines)

One-way from

$131
(Kiwi.com)

Popular in

November

Cheapest in

April

Average price

$298
From Lambert-St Louis to Louisville Intl
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One-way flight from Lambert-St Louis to Louisville Intl
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Highest demand for flights based on searches. 8% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from St. Louis to Louisville

Cheapest flights from St. Louis to Louisville
Explore the most affordable flight options available from St. Louis to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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 10/86:00 amSTL - SDF
1 stop10h 23mAmerican Airlines
Wed 10/155:53 pmSDF - STL
1 stop7h 01mAmerican Airlines
Deal found 9/10$191
This Delta deal was found by Cheapflights users on 9/9. 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 10/205:15 pmSTL - SDF
1 stop4h 19mDelta
Thu 10/237:09 amSDF - STL
1 stop4h 17mDelta
Deal found 9/9$255
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 12/228:01 pmSTL - SDF
1 stop16h 29mAmerican Airlines
Mon 12/292:00 pmSDF - STL
1 stop3h 41mAmerican Airlines
Deal found 9/11$290
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/93:23 pmSTL - SDF
1 stop6h 07mUnited Airlines
Thu 10/168:45 amSDF - STL
1 stop4h 43mUnited Airlines
Deal found 9/10$297
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/95:30 amSTL - SDF
1 stop5h 03mAmerican Airlines
Thu 10/168:08 pmSDF - STL
1 stop4h 50mAmerican Airlines
Deal found 9/9$305
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Sun 10/2610:57 amSTL - SDF
1 stop21h 34mMultiple Airlines
Sun 11/22:57 pmSDF - STL
2 stops21h 27mMultiple Airlines
Deal found 9/11$310
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 10/206:00 amSTL - SDF
2 stops8h 06mAmerican Airlines
Thu 10/233:46 pmSDF - STL
2 stops9h 08mAmerican Airlines
Deal found 9/9$319
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 9/261:57 pmSTL - SDF
1 stop18h 22mMultiple Airlines
Tue 9/308:23 amSDF - STL
2 stops50h 31mMultiple Airlines
Deal found 9/11$321
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/291:57 pmSTL - SDF
1 stop18h 22mMultiple Airlines
Thu 10/24:20 pmSDF - STL
2 stops17h 46mMultiple Airlines
Deal found 9/9$351

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Louisville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from St. Louis to Louisville that are best for you.

Fly from

St. Louis

Fly to

Louisville

Route

Depart

Return

Price

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Wed 10/8

6:00 am-5:23 pm

1 stop10h 23m

Louisville Intl

Wed 10/15

5:53 pm-11:54 pm

1 stop7h 01m

$191

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 2/21

5:30 pm-10:55 pm

1 stop4h 25m

Louisville Intl

Wed 2/25

7:30 pm-11:40 pm

1 stop5h 10m

$212

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 2/21

4:00 pm-8:52 pm

1 stop3h 52m

Louisville Intl

Tue 2/24

4:30 pm-11:10 pm

1 stop7h 40m

$212

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Wed 2/25

6:00 am-11:37 am

1 stop4h 37m

Louisville Intl

Wed 2/25

7:30 pm-11:40 pm

1 stop5h 10m

$213

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Tue 2/24

10:00 am-4:52 pm

1 stop5h 52m

Louisville Intl

Wed 2/25

12:40 pm-6:04 pm

1 stop6h 24m

$213

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 2/21

8:50 am-5:42 pm

2 stops7h 52m

Louisville Intl

Sat 2/28

12:40 pm-6:04 pm

1 stop6h 24m

$216

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Wed 2/25

7:30 am-1:50 pm

1 stop5h 20m

Louisville Intl

Sat 2/28

10:15 am-4:50 pm

2 stops7h 35m

$217

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Mon 2/23

6:32 pm-10:33 am

1 stop15h 01m

Louisville Intl

Thu 2/26

6:57 am-12:11 pm

1 stop6h 14m

$230

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Fri 2/20

7:05 pm-11:56 pm

1 stop3h 51m

Louisville Intl

Sat 2/28

7:30 pm-11:40 pm

1 stop5h 10m

$251

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Thu 9/25

10:35 am-8:57 am

1 stop21h 22m

$131

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 16 results
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Best time to book a flight from St. Louis to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from St. Louis with our price prediction graph.
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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Louisville

What is the cheapest month to book a flight from St. Louis to Louisville?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Louisville (average of $299). Flying from St. Louis to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to SDF?

Find hourly flight availability from St. Louis to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

One of the essential ways to save on airfare from St. Louis to Louisville is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 21% on airfare.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Southwest from St. Louis to Louisville to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Louisville?

    Departing from St. Louis to Louisville will take you 4h 25m. The distance between St. Louis and Louisville is about 254 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from St. Louis to Louisville round-trip?

    Our cheapest airline available from St. Louis to Louisville is Southwest. Our recent data shows that you can find tickets from as low as $226 on this airline. This flight start at 50% lower than the current average price 3 months from now.

  • Can I find deals for flights from St. Louis to Louisville that include hotel bookings?

    Yes. In addition to deals on St. Louis to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Louisville.

  • Can I find deals for business class flights from St. Louis to Louisville?

    Yes. Cheapflights offers flight deals from St. Louis to Louisville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Louisville?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Louisville (average of $299). Flying from St. Louis to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Top airline flying from St. Louis to Louisville

Discover the top airline that operate flights from St. Louis to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$226Average$550FlexibilityNo cancel feeOn-time63%

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