SDF - STL

$132 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 1/15. 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 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 24% 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.

Everything you should know

Cheapest round-trip
$317
United Airlines
Tue 1/20Wed 1/21
SDF - STL • 1 stop
Cheapest one-way
$132
Typical prices: $256-$343
Multiple Airlines
Thu 1/15
SDF - STL • 2 stops
Top airlines
United Airlines
Cheapest • from $317 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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 St. Louis!
Flight Deals
Booking Insights
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

Tue, Jan 20 - Wed, Jan 21
United Airlines Logo
8:29 am - 2:30 pm
SDF
-
STL
7h 01m1 stop
United Airlines Logo
11:22 am - 7:31 pm
STL
-
SDF
7h 09m1 stop
$317United Airlines
Fri, Apr 10 - Mon, Apr 13
Delta Logo
7:37 pm - 11:42 pm
SDF
-
STL
5h 05m1 stop
Delta Logo
6:30 am - 11:58 am
STL
-
SDF
4h 28m1 stop
$357Delta
Fri, Apr 10 - Mon, Apr 13
Southwest Logo
5:25 pm - 8:55 pm
SDF
-
STL
4h 30m1 stop
Southwest Logo
5:45 am - 3:00 pm
STL
-
SDF
8h 15m2 stops
$362Southwest
Fri, Apr 10 - Mon, Apr 13
Southwest Logo
5:25 pm - 10:40 pm
SDF
-
STL
6h 15m2 stops
Southwest Logo
1:45 pm - 9:45 pm
STL
-
SDF
7h 00m2 stops
$367Southwest
Thu, Jan 1 - Mon, Jan 5
Delta Logo
6:40 am - 11:12 am
SDF
-
STL
5h 32m1 stop
Delta Logo
7:10 am - 2:32 pm
STL
-
SDF
6h 22m1 stop
$380Delta
Thu, Jan 1 - Mon, Jan 5
American Airlines Logo
5:00 am - 1:36 pm
SDF
-
STL
9h 36m2 stops
American Airlines Logo
8:01 pm - 12:32 pm
STL
-
SDF
15h 31m1 stop
$406American Airlines
Thu, Jan 1 - Mon, Jan 5
United Airlines Logo
6:11 pm - 9:43 pm
SDF
-
STL
4h 32m1 stop
United Airlines Logo
8:15 am - 2:44 pm
STL
-
SDF
5h 29m1 stop
$410United Airlines
Thu, Jan 1 - Mon, Jan 5
American Airlines Logo
9:20 am - 1:14 pm
SDF
-
STL
4h 54m1 stop
American Airlines Logo
2:06 pm - 12:16 am
STL
-
SDF
9h 10m2 stops
$415American Airlines
Thu, Jan 1 - Mon, Jan 5
American Airlines Logo
5:00 am - 1:36 pm
SDF
-
STL
9h 36m2 stops
American Airlines Logo
2:06 pm - 12:16 am
STL
-
SDF
9h 10m2 stops
$420American Airlines
Thu, Jan 1 - Mon, Jan 5
United Airlines Logo
9:55 am - 4:27 pm
SDF
-
STL
7h 32m2 stops
United Airlines Logo
9:55 am - 5:28 pm
STL
-
SDF
6h 33m1 stop
$537United Airlines
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$132
Best time to beat the crowds with an average 35% drop in price.
Most popular time to fly with an average 19% 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 $240 for a one-way ticket and $317 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?

    SkyTeam is the only airline alliance operating flights between Louisville and St. Louis.

  • 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 8011 reviews
8.5Crew
7.9Entertainment
7.9Comfort
7.3Food
8.1Boarding
Airline reviews

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

2.0 MediocreWilliam, Dec 2025
DAL - ATL
Read more Delta reviews

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

Great. I had to modify a flight. That was easy and free. Thank You

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

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)