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 9/1. 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

Thu, Jun 26 - Mon, Jun 30
Spirit Airlines Logo
6:36 pm - 9:57 amSTL-SDF
14h 21m1 stop
Spirit Airlines Logo
11:04 am - 6:18 pmSDF-STL
8h 14m1 stop
$215Spirit Airlines
Find Deal
Tue, Jul 1 - Tue, Jul 8
Delta Logo
1:30 pm - 9:13 pmSTL-SDF
6h 43m1 stop
Delta Logo
7:41 pm - 11:20 pmSDF-STL
4h 39m1 stop
$217Delta
Find Deal
Tue, Jul 1 - Tue, Jul 8
American Airlines Logo
5:30 am - 11:20 amSTL-SDF
4h 50m1 stop
American Airlines Logo
6:00 am - 12:43 pmSDF-STL
7h 43m2 stops
$222American Airlines
Find Deal
Tue, Jul 1 - Tue, Jul 8
American Airlines Logo
6:00 am - 2:54 pmSTL-SDF
7h 54m2 stops
American Airlines Logo
6:00 am - 12:43 pmSDF-STL
7h 43m2 stops
$227American Airlines
Find Deal
Mon, Jun 9 - Mon, Jun 23
 Logo
7:00 am - 12:03 pmSTL-SDF
28h 03m2 stops
 Logo
11:04 am - 6:18 pmSDF-STL
8h 14m1 stop
Thu, Jun 12 - Mon, Jun 16
 Logo
6:36 pm - 12:31 pmSTL-SDF
16h 55m2 stops
 Logo
7:45 pm - 11:45 amSDF-STL
41h 00m3 stops
Fri, Jul 25 - Sun, Jul 27
Southwest Logo
4:35 pm - 12:15 amSTL-SDF
6h 40m2 stops
Southwest Logo
8:10 pm - 12:10 amSDF-STL
5h 00m1 stop
$370Southwest
Find Deal
Tue, Jun 10 - Fri, Jun 20
United Airlines Logo
5:27 pm - 10:14 pmSTL-SDF
3h 47m1 stop
United Airlines Logo
6:00 pm - 9:15 pmSDF-STL
4h 15m1 stop
$444United Airlines
Find Deal
Mon, Jun 9 - Mon, Jun 23
Southwest Logo
4:35 pm - 12:15 amSTL-SDF
6h 40m2 stops
Southwest Logo
5:25 am - 12:20 pmSDF-STL
7h 55m2 stops
$449Southwest
Find Deal
Thu, Jun 12 - Mon, Jun 16
United Airlines Logo
5:27 pm - 10:14 pmSTL-SDF
3h 47m1 stop
United Airlines Logo
11:10 am - 2:53 pmSDF-STL
4h 43m1 stop
$453United 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 45% drop in price.
Most popular time to fly and prices are also 8% 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 $215 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?

    SkyTeam, oneworld, 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 4287 reviews
8.6Crew
8.2Boarding
7.1Food
7.6Entertainment
8.0Comfort
Airline reviews

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

6.0 GoodVincent, May 2025MDW - MCO
Read more Southwest reviews

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.

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!

During service there was a garbage/beverage spill near our seats that never was cleaned up. On a relatively short flight when we’re fortunate enough to actually have in flight movies available, the flight attendants pitching the AADVANTAGE credit card shouldn’t talk for the last 10 minutes of the flight so that we miss the end of the movie.

Not sure the logic of the boarding in Groups. I was loaded first on the aisle. Then the guy in the middle. Then the guy by the window. Constantly holding up the other people boarding behind them with us blocking the aisle and this happened in most of the other rows

Newark airport grounded inbound flight and only announced when the flight was about to start taxing.

Boarding on time and fight was early but they didn't let us off the plane on time so we missed our connecting flight to Japan.

I miss the screens they used to have for the long flights. I use a Kendal and it doesn’t work well with there WiFi. I tried my cell and the wifi was not good for it either this is the free wifi.

The delays and cancellations kept me stuck in Miami for an additional 24 hours, and the whole thing seemed extremely disorganized

Everything was great except British airways lost our luggage that was gate checked all the way through to Italy. No one knows currently where one is and the other one may be in route to Amsterdam to meet us but not sure. If you can Hale’s it would be awesome. The website is not helpful.

Waited on the runway for takeoff for 2.5 hours. Air traffic rerouted us. The plane didn't have enough fuel, so had to go back to the gate. Had to wait for a new pilot. Should have landed at 5:22. Didn't land until 9:10. Trash flight.

DFW-LHR Toilets not kept clean Too cramped. Aisles so narrow crew were constantly banging into people on the aisle seats. Even then, the carts used are reduced width. Other than that it was a decent flight on both legs

Eventless. It was a good flight and good crew. Can’t complaint.

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

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