SDF - STL

$123 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 7/11. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

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

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

Flights Deals
Useful Info
Flights 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

Thu, Aug 7 - Mon, Aug 11
American Airlines Logo
6:44 am - 1:12 pmSDF-STL
7h 28m1 stop
American Airlines Logo
6:00 am - 11:13 pmSTL-SDF
16h 13m1 stop
$172American Airlines
Find Deal
Thu, Aug 7 - Mon, Aug 11
Southwest Logo
6:25 am - 8:40 amSDF-STL
3h 15m1 stop
Southwest Logo
2:45 pm - 11:30 pmSTL-SDF
7h 45m2 stops
$202Southwest
Find Deal
Tue, Jul 1 - Sat, Jul 5
Delta Logo
8:06 am - 12:35 pmSDF-STL
5h 29m1 stop
Delta Logo
7:00 am - 2:35 pmSTL-SDF
6h 35m1 stop
$237Delta
Find Deal
Thu, Dec 4 - Sun, Dec 7
Delta Logo
7:00 am - 12:57 pmSDF-STL
6h 57m1 stop
Delta Logo
6:45 am - 1:39 pmSTL-SDF
5h 54m1 stop
$242Delta
Find Deal
Mon, Jul 28 - Tue, Jul 29
United Airlines Logo
8:40 am - 12:27 pmSDF-STL
4h 47m1 stop
United Airlines Logo
5:31 pm - 10:14 pmSTL-SDF
3h 43m1 stop
$293United Airlines
Find Deal
Fri, Jul 4 - Mon, Jul 7
Spirit Airlines Logo
11:04 am - 5:04 pmSDF-STL
7h 00m1 stop
Spirit Airlines Logo
11:28 am - 6:35 pmSTL-SDF
30h 07m3 stops
$331Spirit Airlines
Find Deal
Fri, Jul 4 - Mon, Jul 7
Spirit Airlines Logo
11:04 am - 5:04 pmSDF-STL
7h 00m1 stop
Spirit Airlines Logo
11:28 am - 11:38 pmSTL-SDF
11h 10m1 stop
$337Spirit Airlines
Find Deal
Wed, Jul 2 - Sun, Jul 6
 Logo
9:46 am - 5:04 pmSDF-STL
32h 18m3 stops
 Logo
6:36 pm - 9:57 amSTL-SDF
14h 21m1 stop
Wed, Jul 2 - Sun, Jul 6
 Logo
9:46 am - 5:04 pmSDF-STL
32h 18m3 stops
 Logo
6:36 pm - 12:31 pmSTL-SDF
16h 55m2 stops
Wed, Jul 2 - Sun, Jul 6
United Airlines Logo
7:00 am - 12:27 pmSDF-STL
6h 27m1 stop
United Airlines Logo
8:00 am - 9:06 pmSTL-SDF
12h 06m2 stops
$649United Airlines
Find Deal
Useful Info

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.

Good to know

Low seasonAugust
High seasonJuly
Cheapest flight$123
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly with an average 3% 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 $123 for a one-way ticket and $172 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?

    oneworld, SkyTeam, and Star Alliance 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.
8.0
DeltaOverall score based on 7964 reviews
7.3Food
8.5Crew
7.9Entertainment
7.9Comfort
8.2Boarding
Airline reviews

I like for how they process during check in. It was very smoothly.

10.0 ExcellentAbdulla, Jun 2025CMH - JFK
Read more Delta reviews

I like for how they process during check in. It was very smoothly.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.