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$122+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Louisville to St. Louis

Cheapest flights from Louisville to St. Louis
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 January 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
Fri 2/201:19 pm
SDF
-
STL
1 stop12h 08m
Multiple Airlines
Mon 2/238:22 pm
STL
-
SDF
2 stops17h 16m
Multiple Airlines
Deal found 1/20$254
This Delta deal was found by Cheapflights users on 1/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:23 am
SDF
-
STL
1 stop5h 20m
Delta
Thu 2/196:00 am
STL
-
SDF
1 stop4h 27m
Delta
Deal found 1/21$293
This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
Thu 2/192:26 pm
SDF
-
STL
2 stops17h 25m
Multiple Airlines
Sun 2/223:49 pm
STL
-
SDF
1 stop19h 32m
Multiple Airlines
Deal found 1/20$323
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Thu 2/196:12 pm
SDF
-
STL
1 stop6h 36m
American Airlines
Mon 2/236:57 pm
STL
-
SDF
1 stop4h 30m
American Airlines
Deal found 1/20$331
This Southwest deal was found by Cheapflights users on 1/20. 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.
Sun 5/177:00 am
SDF
-
STL
1 stop3h 05m
Southwest
Wed 5/205:35 am
STL
-
SDF
1 stop3h 15m
Southwest
Deal found 1/20$332
This Southwest deal was found by Cheapflights users on 1/20. 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 2/1911:40 am
SDF
-
STL
2 stops9h 40m
Southwest
Mon 2/232:55 pm
STL
-
SDF
2 stops7h 10m
Southwest
Deal found 1/20$342
This Delta deal was found by Cheapflights users on 1/20. 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.
Thu 2/198:55 am
SDF
-
STL
1 stop6h 52m
Delta
Sun 2/226:56 pm
STL
-
SDF
1 stop4h 02m
Delta
Deal found 1/20$343
This Southwest deal was found by Cheapflights users on 1/20. 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 2/1911:40 am
SDF
-
STL
2 stops9h 40m
Southwest
Sun 2/223:10 pm
STL
-
SDF
2 stops8h 35m
Southwest
Deal found 1/20$354
This Southwest deal was found by Cheapflights users on 1/20. 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.
Mon 5/185:25 pm
SDF
-
STL
1 stop4h 30m
Southwest
Fri 5/225:45 am
STL
-
SDF
1 stop7h 15m
Southwest
Deal found 1/20$363

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 January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$254
(Kiwi.com)

One-way from

$122
(Kiwi.com)
Provider with most accurate pricing for Louisville Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Lambert-St Louis flights.
Search Deals
From Louisville Intl to Lambert-St Louis
Search Deals
One-way flight from Louisville Intl to Lambert-St Louis
Search Deals

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 January 21, 2026.
Use the filters below to find and compare flights from Louisville to St. Louis that are best for you.

Fly from

Louisville

Fly to

St. Louis

Route

Depart

Return

Price

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Fri 2/20

1:19 pm-12:27 am

1 stop12h 08m

Lambert-St Louis

Mon 2/23

8:22 pm-2:38 pm

2 stops17h 16m

$254

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 2/17

6:23 am-10:43 am

1 stop5h 20m

Lambert-St Louis

Thu 2/19

6:00 am-11:27 am

1 stop4h 27m

$293

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 2/19

2:26 pm-6:51 am

2 stops17h 25m

Lambert-St Louis

Sun 2/22

3:49 pm-12:21 pm

1 stop19h 32m

$323

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 2/19

6:12 pm-11:48 pm

1 stop6h 36m

Lambert-St Louis

Mon 2/23

6:57 pm-12:27 am

1 stop4h 30m

$331

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Sun 5/17

7:00 am-9:05 am

1 stop3h 05m

Lambert-St Louis

Wed 5/20

5:35 am-9:50 am

1 stop3h 15m

$332

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 2/19

11:40 am-8:20 pm

2 stops9h 40m

Lambert-St Louis

Mon 2/23

2:55 pm-11:05 pm

2 stops7h 10m

$342

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 2/19

8:55 am-2:47 pm

1 stop6h 52m

Lambert-St Louis

Sun 2/22

6:56 pm-11:58 pm

1 stop4h 02m

$343

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 4/23

4:34 pm-11:12 pm

1 stop7h 38m

Lambert-St Louis

Sun 4/26

6:10 am-11:55 am

1 stop4h 45m

$343

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Fri 2/20

6:00 am-11:00 am

1 stop6h 00m

Lambert-St Louis

Mon 2/23

6:45 pm-11:00 pm

1 stop3h 15m

$343

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 4/23

8:40 am-12:55 pm

1 stop5h 15m

Lambert-St Louis

Sun 4/26

5:35 am-12:50 pm

2 stops6h 15m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 17 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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 Expedia the most. Expedia 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.
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 Louisville to St. Louis

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

Currently, October is the cheapest month in which you can book a flight from Louisville to St. Louis (average of $85). Flying from Louisville to St. Louis in December is currently the most expensive (average of $281). 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.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated January 21, 2026.
Read through reviews of airlines operating flights from Louisville to St. Louis, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,089 reviews

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,089 reviews
Delta
7.9
Good
8,089 reviews

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

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

    Delta, American Airlines, and Southwest can get you from Louisville to St. Louis in just under 3h 05m. Your travel time can differ by up to 3h 31m. There are 254 mi between Louisville and St. Louis. 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 Louisville to St. Louis round-trip?

    According to our current data, Delta ($204), offers the cheapest pricing from Louisville to St. Louis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Louisville to St. Louis 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 Louisville to St. Louis?

    Currently, October is the cheapest month in which you can book a flight from Louisville to St. Louis (average of $85). Flying from Louisville to St. Louis in December is currently the most expensive (average of $281). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Louisville to St. Louis

Discover the top airline that operate flights from Louisville to St. Louis. 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$204Average$374FlexibilityNo cancel feeOn-timeN/A

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