$55 Find Cheap Flights from St. Louis to Kentucky

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 Kentucky departing on 7/15. 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 Kentucky

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

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Louisville
Louisville1 stop$309
Lexington
Lexington1 stop$289
Nashville
Nashvillenonstop$109
Louisville
Louisville1 stop$309
Lexington
Lexington1 stop$289
Nashville
Nashvillenonstop$109

Book Cheap St. Louis to Kentucky Plane Tickets

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

Wed, Jul 8 - Tue, Jul 14
Southwest Logo
10:15 am - 11:25 am
STL
-
BNA
1h 10mnonstop
Southwest Logo
9:45 pm - 11:05 pm
BNA
-
STL
1h 20mnonstop
$109Southwest
Wed, Jul 8 - Tue, Jul 14
Southwest Logo
10:15 am - 11:25 am
STL
-
BNA
1h 10mnonstop
Southwest Logo
4:20 pm - 8:20 pm
BNA
-
STL
4h 00m
1 stop
$119Southwest
Thu, Jul 16 - Thu, Jul 23
Frontier Logo
6:34 pm - 11:48 am
STL
-
CVG
16h 14m
1 stop
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
$163Frontier
Tue, Jul 14 - Thu, Jul 16
Frontier Logo
6:34 pm - 11:48 am
STL
-
CVG
16h 14m
1 stop
Frontier Logo
12:18 pm - 5:37 pm
CVG
-
STL
6h 19m
1 stop
$166Frontier
Thu, Aug 6 - Mon, Aug 10
Multiple Airlines Logo
6:34 pm - 11:48 am
STL
-
CVG
16h 14m
1 stop
Multiple Airlines Logo
1:14 pm - 5:37 pm
CVG
-
STL
29h 23m
2 stops
$212Multiple Airlines
Thu, Aug 6 - Mon, Aug 10
Multiple Airlines Logo
6:34 pm - 11:48 am
STL
-
CVG
16h 14m
1 stop
Multiple Airlines Logo
1:14 pm - 5:37 pm
CVG
-
STL
29h 23m
2 stops
$219Multiple Airlines
Thu, Aug 6 - Mon, Aug 10
Delta Logo
7:00 am - 12:11 pm
STL
-
LEX
4h 11m
1 stop
Delta Logo
7:00 am - 9:54 am
LEX
-
STL
3h 54m
1 stop
$289Delta
Mon, Jul 27 - Sat, Aug 1
American Airlines Logo
5:10 am - 10:42 am
STL
-
TRI
4h 32m
1 stop
American Airlines Logo
7:54 am - 2:05 pm
TRI
-
STL
7h 11m
1 stop
$289American Airlines
Fri, Jul 3 - Sun, Jul 5
American Airlines Logo
12:35 pm - 7:40 pm
STL
-
LEX
6h 05m
1 stop
American Airlines Logo
5:35 am - 8:37 am
LEX
-
STL
4h 02m
1 stop
$295American Airlines
Thu, Aug 6 - Tue, Aug 11
Delta Logo
6:30 am - 1:51 pm
STL
-
SDF
6h 21m
1 stop
Delta Logo
10:34 am - 1:14 pm
SDF
-
STL
3h 40m
1 stop
$327Delta
Booking Insights

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

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

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from St. Louis to Kentucky were found on Southwest ($109) and Frontier ($163).

Good to know

Low seasonJanuary
Cheapest flight$55
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from St. Louis to Nashville

FAQs - booking Kentucky flights

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

    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 Kentucky.

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

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

    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 from St. Louis to Kentucky with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Kentucky?

    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 from St. Louis to Kentucky 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 Kentucky

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Kentucky. 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 Kentucky? 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.
7.8
DeltaOverall score based on 8421 reviews
7.8Comfort
7.8Entertainment
7.2Food
8.5Crew
8.1Boarding
Airline reviews

Very good flight. Crew was great. No issues and we even arrived early.

10.0 ExcellentAnonymous, Jun 2026
SAN - DTW
Read more Delta reviews

Very good flight. Crew was great. No issues and we even arrived early.

The flights are constantly late anymore, and they won't even give you a glass of water on the plane. For years, they were able to do a service on this flight from Atlanta to Knoxville and Knoxville Atlanta now they say it's too short of a flight. You can't even get a quick drink of water.

Flight got canceled 4 times, missed my connecting flight due to delays, have to wait to go home tomorrow

Third flight in two months where the crew was not there. Comfort seating does not guarantee overhead bin space. Passengers with children are allowed on the plane first - if you are flying to and from Orlando, this means half the plane has boarded before you get on. And somehow all the bin space is taken up. 3 out of 5 flights have had issues with equipment or procedure. Some of these instances caused the flight to be delayed because of a "nuisance" light. One time it was a bag that had been brought on board but did not belong to anyone so we had to return to the gate. Last night we were told the "AC" on the plane doesn't work well and we're 10th for take off- because the crew was late - and that it will get cool when we're in the air. Not sure if this is usual, but I didn't think flight crew could jump seat in first class. Movie and TV selection has not been refreshed for several months- flying one to two round trips each month easily exhausts the list of content.

Great experience nice pilot very soft and easy landing and take off

We sat on the runway for over an hour before departure. That was unwelcome.

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

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

Information on your arrival and departure airports