STL - SDF

$179 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 4/19. 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
1 adult, Economy, 0 bags

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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Everything you should know

Cheapest round-trip
$277
Multiple Airlines
Thu 1/8Thu 1/15
STL - SDF • 1 stop
Cheapest one-way
$179
Southwest
Sun 4/19
STL - SDF • 1 stop
Top airlines
Delta
Cheapest • from $288 (round-trip)
Southwest
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Louisville!
Flight Deals
Booking Insights
Flight 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, Jan 8 - Thu, Jan 15
Multiple Airlines Logo
5:11 pm - 1:00 pm
STL
-
SDF
18h 49m1 stop
Multiple Airlines Logo
3:36 pm - 10:34 pm
SDF
-
STL
31h 58m2 stops
$277Multiple Airlines
Wed, Jan 7 - Sat, Jan 10
Delta Logo
5:25 pm - 11:06 pm
STL
-
SDF
4h 41m1 stop
Delta Logo
5:45 pm - 11:39 pm
SDF
-
STL
6h 54m1 stop
$288Delta
Thu, Jan 8 - Thu, Jan 15
Delta Logo
6:00 am - 11:37 am
STL
-
SDF
4h 37m1 stop
Delta Logo
6:00 am - 8:53 am
SDF
-
STL
3h 53m1 stop
$313Delta
Wed, Jan 7 - Sat, Jan 10
Southwest Logo
6:50 am - 1:35 pm
STL
-
SDF
5h 45m1 stop
Southwest Logo
11:10 am - 5:10 pm
SDF
-
STL
7h 00m2 stops
$320Southwest
Wed, Jan 7 - Sat, Jan 10
American Airlines Logo
6:00 am - 12:32 pm
STL
-
SDF
5h 32m1 stop
American Airlines Logo
1:15 pm - 6:34 pm
SDF
-
STL
6h 19m1 stop
$324American Airlines
Wed, Jan 7 - Sat, Jan 10
Southwest Logo
2:15 pm - 10:45 pm
STL
-
SDF
7h 30m2 stops
Southwest Logo
11:10 am - 5:10 pm
SDF
-
STL
7h 00m2 stops
$325Southwest
Mon, May 4 - Wed, May 6
Delta Logo
2:18 pm - 9:37 pm
STL
-
SDF
6h 19m1 stop
Delta Logo
8:10 am - 12:54 pm
SDF
-
STL
5h 44m1 stop
$337Delta
Mon, May 4 - Wed, May 6
Southwest Logo
12:25 pm - 7:35 pm
STL
-
SDF
6h 10m1 stop
Southwest Logo
12:10 pm - 8:00 pm
SDF
-
STL
8h 50m2 stops
$342Southwest
Mon, May 4 - Wed, May 6
Southwest Logo
5:45 am - 3:00 pm
STL
-
SDF
8h 15m2 stops
Southwest Logo
4:40 pm - 10:10 pm
SDF
-
STL
6h 30m2 stops
$347Southwest
Sun, Jan 18 - Thu, Jan 22
United Airlines Logo
8:05 am - 1:24 pm
STL
-
SDF
4h 19m1 stop
United Airlines Logo
8:29 am - 12:29 pm
SDF
-
STL
5h 00m1 stop
$356United Airlines
Booking Insights

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.

How much is a round-trip flight from St. Louis to Louisville?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Louisville departing in January.

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.

Find deals

Good to know

Low seasonApril
Cheapest flight$179
Best time to beat the crowds with an average 53% drop in price.
Most popular time to fly with an average 15% increase in price.
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 $179 for a one-way ticket and $277 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.

  • 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 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.
7.9
SouthwestOverall score based on 4250 reviews
8.6Crew
7.0Food
8.1Boarding
7.5Entertainment
8.0Comfort
Airline reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

2.0 MediocreRobert, Dec 2025
LAS - TPA
Read more Southwest reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

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

Information on your arrival and departure airports

St. Louis (STL)
Louisville (SDF)