$97 Cheap Flights from St. Louis (STL) to Louisville (SDF)

View $97 flight on Mon, Jan 5, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Louisville Intl. Airport (SDF)

Cheap Flights from St. Louis to Louisville (STL-SDF)

Prices were available within the past 7 days and start at $97 for one-way flights and $257 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Nov 29 - Tue, Dec 2
STL
St. Louis
SDF
Louisville
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Nov 29 from St. Louis to Louisville, returning Tue, Dec 2, priced at $257 found 1 day ago
Southwest Airlines
Mon, Nov 24 - Tue, Dec 2
STL
St. Louis
SDF
Louisville
$265 Roundtrip, found 2 days ago
$265
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Mon, Nov 24 from St. Louis to Louisville, returning Tue, Dec 2, priced at $265 found 2 days ago
United
Mon, Nov 24 - Tue, Dec 2
STL
St. Louis
SDF
Louisville
$265 Roundtrip, found 2 days ago
$265
Roundtrip
found 2 days ago
Select United flight, departing Mon, Nov 24 from St. Louis to Louisville, returning Tue, Dec 2, priced at $265 found 2 days ago
United
Mon, Nov 24 - Tue, Dec 2
STL
St. Louis
SDF
Louisville
$269 Roundtrip, found 2 days ago
$269
Roundtrip
found 2 days ago
Select United flight, departing Mon, Nov 24 from St. Louis to Louisville, returning Tue, Dec 2, priced at $269 found 2 days ago
Southwest Airlines
Mon, Nov 24 - Tue, Dec 2
STL
St. Louis
SDF
Louisville
$270 Roundtrip, found 2 days ago
$270
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Mon, Nov 24 from St. Louis to Louisville, returning Tue, Dec 2, priced at $270 found 2 days ago
American Airlines
Wed, Dec 10 - Thu, Dec 11
STL
St. Louis
SDF
Louisville
$277 Roundtrip, found 5 hours ago
$277
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Wed, Dec 10 from St. Louis to Louisville, returning Thu, Dec 11, priced at $277 found 5 hours ago
American Airlines
Wed, Dec 10 - Thu, Dec 11
STL
St. Louis
SDF
Louisville
$283 Roundtrip, found 5 hours ago
$283
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Wed, Dec 10 from St. Louis to Louisville, returning Thu, Dec 11, priced at $283 found 5 hours ago
Delta
Mon, Nov 24 - Thu, Dec 4
STL
St. Louis
SDF
Louisville
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Nov 24 from St. Louis to Louisville, returning Thu, Dec 4, priced at $288 found 1 day ago
Spirit Airlines
Tue, Dec 23 - Tue, Dec 30
STL
St. Louis
SDF
Louisville
$294 Roundtrip, found 1 day ago
$294
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Tue, Dec 23 from St. Louis to Louisville, returning Tue, Dec 30, priced at $294 found 1 day ago
United
Mon, Nov 24 - Tue, Dec 2
STL
St. Louis
SDF
Louisville
$299 Roundtrip, found 2 days ago
$299
Roundtrip
found 2 days ago
Select United flight, departing Mon, Nov 24 from St. Louis to Louisville, returning Tue, Dec 2, priced at $299 found 2 days ago

Find the cheapest month to fly from St. Louis (STL) to Louisville (SDF)

August is typically the cheapest month to fly

From $158 - $552 per traveler.

Alternative airports near Louisville

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Louisville Intl. SDF. Cheapest and Closest option available. Average driving time to city center is 9 minutes. Flights from $477
SDF
Louisville Intl.
CheapestClosest
Average driving time to city center9 min
Flights from $477

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Louisville Intl. Airport (SDF) cost?
Grab a cheap one-way flight from $97 or cheap return flight from $257 from Lambert-St. Louis Intl. Airport (STL) to Louisville Intl. Airport (SDF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Louisville Intl. Airport (SDF)?
The cheapest month to fly from STL to SDF is November, when there's less demand. Off-peak months are typically when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Louisville Intl. Airport (SDF)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STL to SDF flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Louisville Intl. Airport (SDF)?
You'll have to take a flight with a layover if you're traveling from Lambert-St. Louis Intl. Airport (STL) to Louisville Intl. Airport (SDF). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from STL to SDF?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on various factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Louisville Intl. Airport (SDF)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to Louisville Intl. Airport (SDF) that leaves before 3 PM to reduce the likelihood of delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Louisville Intl. Airport (SDF) last-minute?
Last-minute bookings from STL to SDF are usually more expensive. For the best prices, start searching for flights well in advance. That being said, if you can play around with your travel dates, it's possible to land a cheap fare right before your trip.
Is it cheaper to book a STL to SDF flight and hotel package?
Booking a STL to SDF flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our wide range of hotels and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Louisville Intl. Airport (SDF)?
In most instances, you can cancel or reschedule your STL to SDF flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want more details, go to our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Louisville Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$256
Distance
253 mi

Book with confidence

St. Louis to Louisville Flights

The cheapest times to fly from St. Louis to Louisville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Louisville are during the month of November. You can find some of the cheapest flights from St. Louis to Louisville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Louisville

Sunday is one of the best days to book for cheap flights from St. Louis to Louisville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Louisville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Louisville in 2025. You can also book with separate airlines for your outbound and return journeys, from $97 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Louisville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Louisville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Louisville Flights

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*Available to One Key members.