STL - SDF

$103 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 7/10. 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
1 adult, Economy

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 (STL-SDF)

 
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.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Mon, Aug 11 - Tue, Aug 12
American Airlines Logo
6:00 am - 11:13 pmSTL-SDF
16h 13m1 stop
American Airlines Logo
6:44 am - 8:25 pmSDF-STL
14h 41m1 stop
$171American Airlines
Find Deal
Thu, Aug 21 - Thu, Aug 21
Delta Logo
6:00 am - 11:45 amSTL-SDF
4h 45m1 stop
Delta Logo
7:45 pm - 11:14 pmSDF-STL
4h 29m1 stop
$197Delta
Find Deal
Mon, Aug 11 - Tue, Aug 12
Southwest Logo
7:15 am - 2:50 pmSTL-SDF
6h 35m1 stop
Southwest Logo
3:50 pm - 10:05 pmSDF-STL
7h 15m2 stops
$202Southwest
Find Deal
Mon, Aug 11 - Tue, Aug 12
Southwest Logo
7:50 am - 4:45 pmSTL-SDF
7h 55m2 stops
Southwest Logo
3:50 pm - 10:05 pmSDF-STL
7h 15m2 stops
$207Southwest
Find Deal
Thu, Aug 21 - Sun, Aug 24
 Logo
10:50 am - 9:34 amSTL-SDF
21h 44m1 stop
 Logo
2:46 pm - 1:32 pmSDF-STL
23h 46m1 stop
Wed, Jul 23 - Fri, Jul 25
Spirit Airlines Logo
11:24 am - 7:08 pmSTL-SDF
30h 44m3 stops
Spirit Airlines Logo
8:13 pm - 2:39 pmSDF-STL
19h 26m1 stop
$315Spirit Airlines
Find Deal
Thu, Aug 21 - Sun, Aug 24
 Logo
2:27 pm - 9:34 amSTL-SDF
18h 07m2 stops
 Logo
12:47 pm - 1:32 pmSDF-STL
25h 45m2 stops
Wed, Jul 23 - Fri, Jul 25
Spirit Airlines Logo
11:24 am - 7:08 pmSTL-SDF
30h 44m3 stops
Spirit Airlines Logo
2:50 pm - 9:40 amSDF-STL
19h 50m2 stops
$363Spirit Airlines
Find Deal
Mon, Jun 30 - Thu, Jul 3
United Airlines Logo
5:30 pm - 10:14 pmSTL-SDF
3h 44m1 stop
United Airlines Logo
6:08 pm - 10:45 pmSDF-STL
5h 37m1 stop
$375United Airlines
Find Deal
Mon, Jul 14 - Fri, Jul 18
United Airlines Logo
5:30 pm - 10:27 amSTL-SDF
15h 57m2 stops
United Airlines Logo
7:00 am - 12:27 pmSDF-STL
6h 27m1 stop
$492United Airlines
Find Deal
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 seasonApril
High seasonOctober
Cheapest flight$103
Best time to beat the crowds with an average 47% drop in price.
Most popular time to fly and prices are also 12% 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 $103 for a one-way ticket and $171 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?

    Star Alliance, oneworld, and SkyTeam 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.

Reviews of the 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 4279 reviews
7.1Food
8.0Comfort
8.6Crew
8.2Boarding
7.6Entertainment
Airline reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

10.0 ExcellentMichael, Jun 2025SMF - SEA
Read more Southwest reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

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.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

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

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