STL - SDF

$147 Find Cheap Flights from St. Louis to Louisville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Louisville departing on 6/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Louisville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Louisville, as well as popular online travel agencies
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Flights Deals

Cheap Flights from St. Louis to Louisville

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from St. Louis to Louisville

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Louisville.
Discover the best prices for you by selecting your travel dates on KAYAK.
Delta Logo
3:40 pm - 10:43 pmSTL-SDF
6h 03m1 stop
Delta Logo
3:24 pm - 6:44 pmSDF-STL
4h 20m1 stop
$251Delta
Find Deal
Tue, Jun 3 - Tue, Jun 10
American Airlines Logo
6:00 am - 10:58 amSTL-SDF
3h 58m1 stop
American Airlines Logo
3:39 pm - 11:54 pmSDF-STL
9h 15m2 stops
$256American Airlines
Find Deal
Tue, Jun 3 - Tue, Jun 10
Southwest Logo
4:35 pm - 11:10 pmSTL-SDF
5h 35m1 stop
Southwest Logo
6:40 am - 2:20 pmSDF-STL
8h 40m2 stops
$321Southwest
Find Deal
Mon, May 26 - Thu, May 29
Southwest Logo
12:50 pm - 8:40 pmSTL-SDF
6h 50m2 stops
Southwest Logo
1:05 pm - 11:05 pmSDF-STL
11h 00m2 stops
$322Southwest
Find Deal
Tue, Jun 3 - Tue, Jun 10
Spirit Airlines Logo
7:13 pm - 11:38 pmSTL-SDF
27h 25m2 stops
Spirit Airlines Logo
11:04 am - 6:18 pmSDF-STL
8h 14m1 stop
$326Spirit Airlines
Find Deal
Mon, Jun 16 - Mon, Jun 23
Spirit Airlines Logo
7:13 pm - 6:35 pmSTL-SDF
22h 22m3 stops
Spirit Airlines Logo
11:04 am - 6:18 pmSDF-STL
8h 14m1 stop
$344Spirit Airlines
Find Deal
Mon, Jun 16 - Mon, Jun 23
United Airlines Logo
10:39 am - 5:26 pmSTL-SDF
5h 47m1 stop
United Airlines Logo
7:00 am - 12:20 pmSDF-STL
6h 20m1 stop
$375United Airlines
Find Deal
Tue, May 20 - Sat, May 24
 Logo
9:50 am - 12:03 pmSTL-SDF
25h 13m3 stops
 Logo
9:55 am - 6:41 pmSDF-STL
33h 46m3 stops
Mon, Jun 2 - Mon, Jun 9
United Airlines Logo
5:30 pm - 10:24 pmSTL-SDF
3h 54m1 stop
United Airlines Logo
8:45 am - 2:19 pmSDF-STL
6h 34m1 stop
$397United Airlines
Find Deal
Sun, Sep 28 - Fri, Oct 3
 Logo
7:13 pm - 11:38 pmSTL-SDF
27h 25m2 stops
 Logo
7:45 pm - 4:45 pmSDF-STL
22h 00m3 stops
Mon, Jun 16 - Mon, Jun 23
Useful Info

KAYAK's insights & trends for St. Louis to Louisville flights

Get data-powered insights and trends into flights from St. Louis to Louisville to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Louisville?

The average price of all round-trip flights from St. Louis to Louisville clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Louisville on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from St. Louis to Louisville. For your return ticket, we recommend flying on a Saturday and avoiding Thursdays for the best deals.

Good to know

Low seasonSeptember
High seasonOctober
Cheapest flight$147
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from St. Louis to Louisville

When to book flights from St. Louis to Louisville

Are your dates flexible? Find out the best times to travel from St. Louis to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Louisville

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

    In the last 3 days, the lowest price for a flight from St. Louis to Louisville was $147 for a one-way ticket and $251 for a round-trip.

  • Do I need a passport to fly between St. Louis and Louisville?

    No

  • Which aircraft models fly most regularly from St. Louis to Louisville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Louisville?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between St. Louis and Louisville, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Louisville, Southwest or American Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Louisville are Southwest and American Airlines. With an average price for the route of $544 and an overall rating of 8.0, Southwest is the most popular choice. American Airlines is also a great choice for the route, with an average price of $341 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from St. Louis to Louisville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Louisville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Louisville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airlines flying from St. Louis to Louisville

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Louisville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Louisville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4292 reviews
8.6Crew
7.6Entertainment
8.0Comfort
7.1Food
8.2Boarding
Airline reviews

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

10.0 ExcellentKurt V, May 2025AUS - ABQ
Read more Southwest reviews

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

In flight connectivity (via T-Mobile) was often not working.

Pitch was very small. Knees were on the seat back in front of me.

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

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

Information on your arrival and departure airports

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