$59 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 6/2. 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$295
Lexington
Lexington1 stop$280
Nashville
Nashvillenonstop$137
Louisville
Louisville1 stop$295
Lexington
Lexington1 stop$280
Nashville
Nashvillenonstop$137

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

Fri, Jun 19 - Fri, Jun 26
Frontier Logo
5:06 pm - 11:47 am
STL
-
CVG
17h 41m
1 stop
Frontier Logo
12:54 pm - 8:52 am
CVG
-
STL
20h 58m
1 stop
$123Frontier
Thu, Jun 4 - Sun, Jun 7
Frontier Logo
6:33 pm - 11:41 am
STL
-
CVG
16h 08m
1 stop
Frontier Logo
12:12 pm - 5:33 pm
CVG
-
STL
6h 21m
1 stop
$124Frontier
Tue, Jun 2 - Tue, Jun 9
Southwest Logo
11:35 am - 12:45 pm
STL
-
BNA
1h 10mnonstop
Southwest Logo
6:25 am - 7:45 am
BNA
-
STL
1h 20mnonstop
$137Southwest
Tue, Jun 2 - Tue, Jun 9
Southwest Logo
2:30 pm - 3:40 pm
STL
-
BNA
1h 10mnonstop
Southwest Logo
1:55 pm - 7:15 pm
BNA
-
STL
5h 20m
1 stop
$147Southwest
Fri, Aug 14 - Sun, Aug 16
Frontier Logo
4:52 pm - 11:48 am
STL
-
CVG
17h 56m
1 stop
Frontier Logo
12:27 pm - 5:37 pm
CVG
-
STL
6h 10m
1 stop
$152Frontier
Tue, Jun 2 - Tue, Jun 9
Delta Logo
10:49 am - 5:31 pm
STL
-
BNA
6h 42m
1 stop
Delta Logo
9:48 am - 2:52 pm
BNA
-
STL
5h 04m
1 stop
$157Delta
Tue, Jun 2 - Thu, Jun 4
Delta Logo
7:05 am - 11:37 am
STL
-
BNA
4h 32m
1 stop
Delta Logo
5:20 am - 9:44 am
BNA
-
STL
4h 24m
1 stop
$179Delta
Thu, May 28 - Mon, Jun 1
Southern / Mokulele Logo
7:20 pm - 9:03 am
STL
-
BNA
13h 43m
1 stop
Southern / Mokulele Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m
1 stop
$198Southern / Mokulele
Tue, Jun 2 - Wed, Jun 3
United Airlines Logo
5:29 pm - 11:56 pm
STL
-
SDF
5h 27m
1 stop
United Airlines Logo
7:19 am - 12:11 pm
SDF
-
STL
5h 52m
1 stop
$345United Airlines
Wed, Jun 3 - Sat, Jun 6
United Airlines Logo
5:29 pm - 11:59 pm
STL
-
LEX
5h 30m
1 stop
United Airlines Logo
5:45 pm - 9:21 pm
LEX
-
STL
4h 36m
1 stop
$385United Airlines
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.

What is the cheapest month to fly from St. Louis to Kentucky?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Kentucky, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Kentucky is January, when tickets cost $0 (return) on average. On the other hand, the most expensive months are June and October, when the average cost of round-trip tickets is $588 and $527 respectively.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$59
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from St. Louis to Cincinnati

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.
7.4
United AirlinesOverall score based on 9690 reviews
6.6Food
7.1Entertainment
7.3Comfort
8.1Crew
7.7Boarding
Airline reviews

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

6.0 GoodAnonymous, May 2026
OMA - DEN
Read more United Airlines reviews

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

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

Information on your arrival and departure airports

St. Louis (STL)