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$97+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SDF
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(Delta)

One-way from

$97
(American Airlines)

Popular in

November

Cheapest in

September

Average price

$550
Provider with most accurate pricing for Lambert-St Louis-Louisville Intl flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Louisville Intl flights.
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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. 16% potential increase in price ($84 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 25, 2025.

This Delta deal was found by Cheapflights users on 3/24. 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 4/175:32 pmSTL - SDF
1 stop5h 27mDelta
Mon 4/217:00 pmSDF - STL
1 stop5h 36mDelta
Deal found 3/24$217
This American Airlines deal was found by Cheapflights users on 3/23. 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 4/2510:17 amSTL - SDF
1 stop9h 10mAmerican Airlines
Mon 4/288:57 pmSDF - STL
1 stop3h 36mAmerican Airlines
Deal found 3/23$230
This Southwest deal was found by Cheapflights users on 3/24. 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 6/125:25 amSTL - SDF
1 stop3h 50mSouthwest
Thu 6/195:00 amSDF - STL
1 stop7h 05mSouthwest
Deal found 3/24$277
This Mytrip deal was found by Cheapflights users on 3/24. 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.
Tue 4/86:47 pmSTL - SDF
1 stop26h 30mSpirit Airlines
Sat 4/1212:58 pmSDF - STL
2 stops29h 17mSpirit Airlines
Deal found 3/24$316
This Mytrip deal was found by Cheapflights users on 3/24. 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.
Thu 4/175:15 pmSTL - SDF
3 stops24h 16mMultiple Airlines
Mon 4/216:19 pmSDF - STL
1 stop23h 56mMultiple Airlines
Deal found 3/24$375
This United Airlines deal was found by Cheapflights users on 3/24. 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 4/88:00 amSTL - SDF
1 stop4h 23mUnited Airlines
Sat 4/1211:04 amSDF - STL
1 stop5h 43mUnited Airlines
Deal found 3/24$403

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 March 25, 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

Thu 4/17

5:32 pm-11:59 pm

1 stop5h 27m

Louisville Intl

Mon 4/21

7:00 pm-11:36 pm

1 stop5h 36m

$217

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Fri 4/25

10:17 am-8:27 pm

1 stop9h 10m

Louisville Intl

Mon 4/28

8:57 pm-11:33 pm

1 stop3h 36m

$230

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Thu 6/12

5:25 am-10:15 am

1 stop3h 50m

Louisville Intl

Thu 6/19

5:00 am-11:05 am

1 stop7h 05m

$277

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Tue 4/8

6:47 pm-10:17 pm

1 stop26h 30m

Louisville Intl

Sat 4/12

12:58 pm-5:15 pm

2 stops29h 17m

$316

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Thu 4/17

5:15 pm-6:31 pm

3 stops24h 16m

Louisville Intl

Mon 4/21

6:19 pm-5:15 pm

1 stop23h 56m

$375

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Tue 4/8

8:00 am-1:23 pm

1 stop4h 23m

Louisville Intl

Sat 4/12

11:04 am-3:47 pm

1 stop5h 43m

$403

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Wed 6/4

1:38 pm-11:01 pm

1 stop8h 23m

$97

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Wed 6/4

6:25 am-3:35 pm

2 stops8h 10m

$114

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Fri 4/11

7:12 pm-11:58 pm

1 stop3h 46m

$227

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Thu 6/19

9:20 am-11:25 am

3 stops25h 05m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 11 results
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Compare providers for flights from St. Louis to Louisville

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 St. Louis to Louisville in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 St. Louis-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Louisville 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 St. Louis-Louisville 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 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 March 25, 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.

Rainfall in Louisville by month

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

In terms of precipitation, rainfall in Louisville ranges from 3.1 - 5.3 inches per month. May is typically the wettest month, when rainfall can reach 5.3 in. September is typically the driest time to visit Louisville when rainfall is around 3.1 in.

Temperature in Louisville by month

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

If weather is an important factor for your trip to Louisville, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 March 25, 2025.
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,890 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Spirit Airlines
6.3
Okay
7,876 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

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

    Our cheapest airline available from St. Louis to Louisville is Delta. Our recent data shows that you can find tickets from as low as $217 on this airline. Additional options worth looking into are American Airlines and Southwest, starting at $230 and $277 round-trip. These flights start at 48% lower than the current average price 3 months from now.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $97. Users have also found prices from $114 and $227 on Southwest and Delta, respectively.

  • 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Jeffersonville
Corydon
Elizabethtown
Bardstown

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Top 2 airlines flying from St. Louis to Louisville

Discover the top 2 airlines 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$220Average$306FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$344FlexibilityNo cancel feeOn-timeN/A
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