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$119+ 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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
mai 6 — mai 131
mar. 5/6
mar. 5/13
1 adult, Economy
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Cheap 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 mai 1, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$251
(Delta)

One-way from

$119
(American Airlines)

Popular in

May

Cheapest in

August

Average price

$475
Provider with most accurate pricing for Louisville Intl-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Louisville Intl-Lambert-St Louis flights.
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From Louisville Intl to Lambert-St Louis
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One-way flight from Louisville Intl to Lambert-St Louis
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Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find 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 mai 1, 2025.

This United Airlines deal was found by Cheapflights users on 4/30. 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.
sam. 6/147:00 amSDF - STL
1 stop4h 45mUnited Airlines
sam. 6/215:27 pmSTL - SDF
1 stop3h 47mUnited Airlines
Deal found 4/30$251
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 6/146:12 amSDF - STL
2 stops7h 42mAmerican Airlines
sam. 6/214:17 pmSTL - SDF
1 stop5h 00mAmerican Airlines
Deal found 4/30$256
This Southwest deal was found by Cheapflights users on 4/30. 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.
mar. 6/36:25 amSDF - STL
1 stop6h 25mSouthwest
jeu. 6/58:20 pmSTL - SDF
1 stop3h 05mSouthwest
Deal found 4/30$272
This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 5/11:05 pmSDF - STL
1 stop23h 26mSun Country Air
dim. 5/48:00 amSTL - SDF
1 stop26h 43mSun Country Air
Deal found 4/29$416
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 6/145:34 pmSDF - STL
2 stops24h 30mMultiple Airlines
sam. 6/2112:15 pmSTL - SDF
3 stops24h 20mMultiple Airlines
Deal found 4/30$451

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 mai 1, 2025.
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

sam. 6/14

5:51 pm-11:51 pm

1 stop7h 00m

Lambert-St Louis

sam. 6/21

1:23 pm-7:00 pm

1 stop4h 37m

$251

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

sam. 6/14

6:12 am-12:54 pm

2 stops7h 42m

Lambert-St Louis

sam. 6/21

4:17 pm-10:17 pm

1 stop5h 00m

$256

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

mar. 6/3

6:25 am-11:50 am

1 stop6h 25m

Lambert-St Louis

jeu. 6/5

8:20 pm-12:25 am

1 stop3h 05m

$272

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

sam. 6/14

5:34 pm-5:04 pm

2 stops24h 30m

Lambert-St Louis

sam. 6/21

12:15 pm-1:35 pm

3 stops24h 20m

$451

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

sam. 5/24

8:56 am-1:07 pm

1 stop5h 11m

$119

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

mar. 5/13

12:41 pm-5:00 pm

1 stop5h 19m

$227

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

mar. 5/13

1:15 pm-11:00 pm

2 stops10h 45m

$232

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

mar. 5/13

2:25 pm-2:47 pm

2 stops25h 22m

$440

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*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 Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Louisville-St. Louis flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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, August is the cheapest month in which you can book a flight from Louisville to St. Louis (average of $311). Flying from Louisville to St. Louis in March is currently the most expensive (average of $356). 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 SDF to STL?

Find hourly flight availability from Louisville to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated mai 1, 2025.

One of the essential ways to save on airfare from Louisville to St. Louis is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 12% on airfare.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 mai 1, 2025.
Southwest
8.0
Very good
4,294 reviews

Food

7.1

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,294 reviews
Southwest
8.0
Very good
4,294 reviews

Food

7.1

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,934 reviews
Southwest
8.0
Very good
4,294 reviews

Food

7.1

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,294 reviews

Food

7.1

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,294 reviews

Food

7.1

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Spirit Airlines
6.3
Okay
7,963 reviews
Southwest
8.0
Very good
4,294 reviews

Food

7.1

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

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.

  • What are the cheapest airlines flying from Louisville to St. Louis round-trip?

    According to our current data, Delta ($251), American Airlines ($257), and United Airlines ($294) offers the cheapest pricing from Louisville to St. Louis. Delta is 26% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Louisville to St. Louis one-way?

    $119 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and Southwest, with prices starting from $227 and $232, respectively.

  • 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, August is the cheapest month in which you can book a flight from Louisville to St. Louis (average of $311). Flying from Louisville to St. Louis in March is currently the most expensive (average of $356). 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
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
O'Fallon

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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 mai 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$226Average$344FlexibilityNo cancel feeOn-timeN/A

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