SDF - STL

$237 Find Cheap Flights from Louisville to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Louisville to St. Louis departing on 10/4. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Louisville to St. Louis, 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 Louisville to St. Louis, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Louisville to St. Louis (SDF-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville to St. Louis 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 Louisville to St. Louis

Fri, Oct 24 - Sun, Nov 2
Multiple Airlines Logo
2:57 pm - 3:56 pmSDF-STL
25h 59m1 stop
Multiple Airlines Logo
10:57 am - 10:52 amSTL-SDF
22h 55m1 stop
$251Multiple Airlines
Find Deal
Fri, Oct 24 - Sun, Nov 2
Multiple Airlines Logo
2:57 pm - 3:56 pmSDF-STL
25h 59m1 stop
Multiple Airlines Logo
12:20 pm - 7:15 pmSTL-SDF
29h 55m2 stops
$261Multiple Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
American Airlines Logo
6:45 am - 11:54 pmSDF-STL
18h 09m1 stop
American Airlines Logo
2:15 pm - 11:03 pmSTL-SDF
7h 48m1 stop
$319American Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
Southwest Logo
5:40 am - 11:30 amSDF-STL
6h 50m1 stop
Southwest Logo
10:55 am - 7:25 pmSTL-SDF
7h 30m2 stops
$393Southwest
Find Deal
Fri, Oct 24 - Mon, Oct 27
Southwest Logo
6:15 am - 1:10 pmSDF-STL
7h 55m2 stops
Southwest Logo
10:55 am - 7:25 pmSTL-SDF
7h 30m2 stops
$459Southwest
Find Deal
Sat, Sep 27 - Sun, Sep 28
Multiple Airlines Logo
8:23 am - 9:40 amSDF-STL
26h 17m1 stop
Multiple Airlines Logo
4:00 pm - 10:27 amSTL-SDF
17h 27m2 stops
$469Multiple Airlines
Find Deal
Mon, Sep 29 - Fri, Oct 3
United Airlines Logo
5:48 pm - 9:37 pmSDF-STL
4h 49m1 stop
United Airlines Logo
3:23 pm - 10:30 pmSTL-SDF
6h 07m1 stop
$473United Airlines
Find Deal
Tue, Sep 30 - Sat, Oct 4
American Airlines Logo
1:16 pm - 9:53 pmSDF-STL
9h 37m2 stops
American Airlines Logo
6:29 am - 12:15 pmSTL-SDF
4h 46m1 stop
$478American Airlines
Find Deal
Fri, Sep 26 - Mon, Sep 29
United Airlines Logo
7:20 am - 10:49 amSDF-STL
4h 29m1 stop
United Airlines Logo
5:28 pm - 10:30 pmSTL-SDF
4h 02m1 stop
$524United Airlines
Find Deal
Sat, Sep 27 - Sat, Sep 27
Delta Logo
6:00 am - 11:30 amSDF-STL
6h 30m1 stop
Delta Logo
3:30 pm - 10:58 pmSTL-SDF
6h 28m1 stop
$569Delta
Find Deal

Everything you should know

Top airlines
American Airlines
Cheapest • from $319 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$251
Multiple Airlines
Fri 10/24Sun 11/2
SDF - STL • 1 stop
Cheapest one-way
$237
Typical prices: $131-464
United Airlines
Sat 10/4
SDF - STL • 1 stop
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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 St. Louis!
Booking Insights

KAYAK's insights & trends for Louisville to St. Louis flights

Get data-powered insights and trends into flights from Louisville to St. Louis 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 Louisville to St. Louis?

The average price of all round-trip flights from Louisville to St. Louis clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Louisville to St. Louis, look for departures on Saturdays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from St. Louis, Thursday is the cheapest day to fly and Monday is the most expensive.

Find deals

Good to know

Low seasonAugust
Cheapest flight$237
Best time to beat the crowds with an average 42% drop in price.
Most popular time to fly with an average 24% increase in price.
Flight from Louisville to St. Louis

When to book flights from Louisville to St. Louis

Are your dates flexible? Find out the best times to travel from Louisville to St. Louis 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 Louisville to St. Louis

  • What is the cheapest flight from Louisville to St. Louis?

    In the last 3 days, the lowest price for a flight from Louisville to St. Louis was $237 for a one-way ticket and $251 for a round-trip.

  • Do I need a passport to fly between Louisville and St. Louis?

    No

  • Which aircraft models fly most regularly from Louisville to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Louisville to St. Louis?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Louisville and St. Louis, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Louisville to St. Louis?

    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 Louisville to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Louisville to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Louisville 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 Louisville to St. Louis?

    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 St. Louis with an airline and back to Louisville with another airline. Booking your flights between Louisville and STL 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 Louisville to St. Louis?

    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 St. Louis from Louisville 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 Louisville to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Louisville to St. Louis. 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 Louisville to St. Louis? 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
DeltaOverall score based on 7954 reviews
7.9Comfort
7.3Food
8.5Crew
7.9Entertainment
8.2Boarding
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

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

Information on your arrival and departure airports

Louisville (SDF)
St. Louis (STL)

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