STL - SDF

$148 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 4/28. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$270
Southwest
Tue 4/14Sat 4/18
STL - SDF • 1 stop
Cheapest one-way
$148
Delta
Tue 4/28
STL - SDF • 1 stop
Top airlines
Cheapest • from $270 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Louisville. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $354 (round-trip)
Shortest trip • 3h 05m (one-way)
Insights
Insights
Insights
Insights
Start a new search
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

Tue, Apr 14 - Sat, Apr 18
Southwest Logo
5:40 am - 12:25 pm
STL
-
SDF
5h 45m
1 stop
Southwest Logo
6:40 am - 8:25 am
SDF
-
STL
2h 45m
1 stop
$270Southwest
Tue, Apr 14 - Sat, Apr 18
Southwest Logo
12:40 pm - 9:05 pm
STL
-
SDF
7h 25m
2 stops
Southwest Logo
6:40 am - 8:25 am
SDF
-
STL
2h 45m
1 stop
$276Southwest
Tue, Apr 14 - Sat, Apr 18
Southwest Logo
5:45 am - 2:45 pm
STL
-
SDF
8h 00m
2 stops
Southwest Logo
8:40 am - 4:20 pm
SDF
-
STL
8h 40m
2 stops
$285Southwest
Tue, Apr 14 - Thu, Apr 16
Southwest Logo
2:30 pm - 9:05 pm
STL
-
SDF
5h 35m
1 stop
Southwest Logo
8:10 pm - 10:45 pm
SDF
-
STL
3h 35m
1 stop
$293Southwest
Tue, Apr 14 - Thu, Apr 16
Southwest Logo
1:15 pm - 9:05 pm
STL
-
SDF
6h 50m
2 stops
Southwest Logo
8:10 pm - 10:45 pm
SDF
-
STL
3h 35m
1 stop
$298Southwest
Sat, Apr 18 - Mon, Apr 20
American Airlines Logo
5:21 pm - 11:48 pm
STL
-
SDF
5h 27m
1 stop
American Airlines Logo
7:01 pm - 10:17 pm
SDF
-
STL
4h 16m
1 stop
$309American Airlines
Tue, Apr 14 - Thu, Apr 16
Southwest Logo
12:40 pm - 9:05 pm
STL
-
SDF
7h 25m
2 stops
Southwest Logo
4:45 pm - 10:45 pm
SDF
-
STL
7h 00m
2 stops
$313Southwest
Sat, Apr 18 - Mon, Apr 20
Southwest Logo
5:40 am - 10:05 am
STL
-
SDF
3h 25m
1 stop
Southwest Logo
4:45 pm - 10:45 pm
SDF
-
STL
7h 00m
2 stops
$314Southwest
Sat, Apr 18 - Mon, Apr 20
Southwest Logo
10:55 am - 5:45 pm
STL
-
SDF
5h 50m
2 stops
Southwest Logo
5:25 pm - 10:40 pm
SDF
-
STL
6h 15m
2 stops
$319Southwest
Tue, May 12 - Wed, May 13
United Airlines Logo
5:28 pm - 11:56 pm
STL
-
SDF
5h 28m
1 stop
United Airlines Logo
11:11 am - 4:39 pm
SDF
-
STL
6h 28m
1 stop
$335United 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.

Which airlines provide the cheapest flights from St. Louis to Louisville?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from St. Louis to Louisville were found on Southwest ($270) and American Airlines ($309).

Good to know

Low seasonApril
Cheapest flight$148
Best time to beat the crowds with an average 40% 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 $148 for a one-way ticket and $270 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 is the only airline alliance operating flights between St. Louis and Louisville.

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Louisville are Southwest and Delta. With an average price for the route of $550 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $413 and an overall rating of 7.9.

  • 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 4318 reviews
8.6Crew
8.1Boarding
8.0Comfort
7.0Food
7.5Entertainment
Airline reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

4.0 OkayKenny, Mar 2026
TPA - BWI
Read more Southwest reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

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

Information on your arrival and departure airports