STL - SDF

$149 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 8/19. 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

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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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Cheap Flight Deals 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.

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

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from St. Louis to Louisville.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:45 am - 8:27 pmSTL-SDF
13h 42m1 stop
5:45 am - 2:53 pmSDF-STL
10h 08m1 stop
$183American Airlines
Find Deal
jue., abr. 17 - jue., abr. 24
6:10 pm - 5:17 pmSTL-SDF
22h 07m2 stops
5:45 am - 5:15 pmSDF-STL
12h 30m1 stop
$258Spirit Airlines
Find Deal
jue., abr. 17 - jue., abr. 24
6:10 pm - 6:31 pmSTL-SDF
23h 21m2 stops
5:45 am - 5:15 pmSDF-STL
12h 30m1 stop
$281Spirit Airlines
Find Deal
jue., abr. 17 - jue., abr. 24
12:15 pm - 10:17 pmSTL-SDF
33h 02m3 stops
5:45 am - 5:15 pmSDF-STL
12h 30m1 stop
jue., abr. 17 - jue., abr. 24
5:38 pm - 10:58 pmSTL-SDF
28h 20m1 stop
5:33 pm - 6:41 pmSDF-STL
26h 08m3 stops
mar., mar. 18 - sáb., mar. 22
5:38 pm - 4:38 pmSTL-SDF
22h 00m2 stops
5:33 pm - 6:41 pmSDF-STL
26h 08m3 stops
mar., mar. 18 - sáb., mar. 22
7:30 am - 4:25 pmSTL-SDF
7h 55m2 stops
6:15 pm - 10:45 pmSDF-STL
5h 30m1 stop
$333Southwest
Find Deal
vie., may. 2 - lun., may. 5
5:15 pm - 10:17 pmSTL-SDF
28h 02m3 stops
5:45 am - 5:15 pmSDF-STL
12h 30m1 stop
jue., abr. 17 - jue., abr. 24
5:35 am - 11:20 amSTL-SDF
4h 45m1 stop
6:00 pm - 9:55 pmSDF-STL
4h 55m1 stop
$350Southwest
Find Deal
vie., may. 2 - dom., may. 4
7:30 am - 1:40 pmSTL-SDF
5h 10m1 stop
2:00 pm - 9:50 pmSDF-STL
8h 50m2 stops
$355Southwest
Find Deal
vie., may. 2 - dom., may. 4

Flights from St. Louis to Louisville - Travel Insights & Trends

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 season

May

High season

October

Cheapest flight

$149
Best time to beat the crowds with an average 34% 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 $149 for a one-way ticket and $183 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, Star Alliance, and oneworld are the airline alliances operating flights between St. Louis and Louisville, with SkyTeam being the most commonly used for this route.

  • 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.

See more FAQs

Top airline 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.
7.2
American AirlinesOverall score based on 10000 reviews
7.0Entertainment
7.5Boarding
6.5Food
8.0Crew
7.3Comfort
Airline reviews

The boarding crew was incredibly helpful getting me on an earlier flight

10.0 ExcellentAnonymous, Mar 2025MCO - DCA
Read more American Airlines reviews

The boarding crew was incredibly helpful getting me on an earlier flight

I didn’t like anything, being platinum pro get you absolutely nowhere and does not increase the customer service treatment whatsoever anymore. My flight was canceled and they put me on a flight eight hours later that would’ve got me back in the middle of the night. They could’ve easily move me up to an hour Prior on an earlier flight. My second flight was unreasonable to take, the third flight was also canceled due to mechanical issues like the first flight. I don’t know what’s going on with American, but they are falling apart, after seven flight changes I finally got home, Unreasonable.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Standard. No different than a discount carrier on a short trip.

At least it was a short flight. Greyhound with wings.

They have lost any customer service care and support. Terrible airline now and been for awhile.

April was the flight attendant in first class and was the most pleasant, cordial and efficient person I have seen on a flight in years. Good example of the type of people AA should hire to increase customer satisfacdtion.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

The flight was delayed leaving Miami. When we arrived in Charlotte, we were unable to park at our scheduled gate. We had to wait another 30-45 minutes before we could park at a different gate. All in all, we were delayed by almost two hours arriving in Charlotte.

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

Information on your arrival and departure airports

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