$63 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 5/20. 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$275
Lexington
Lexington1 stop$271
Nashville
Nashvillenonstop$137
Louisville
Louisville1 stop$275
Lexington
Lexington1 stop$271
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

Thu, May 28 - Thu, Jun 4
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
$133Frontier
Tue, May 19 - Tue, May 26
Southwest Logo
11:35 am - 12:45 pm
STL
-
BNA
1h 10mnonstop
Southwest Logo
8:40 pm - 10:00 pm
BNA
-
STL
1h 20mnonstop
$137Southwest
Tue, May 19 - Tue, May 26
Delta Logo
5:15 pm - 11:11 pm
STL
-
BNA
5h 56m
1 stop
Delta Logo
6:43 pm - 11:59 pm
BNA
-
STL
5h 16m
1 stop
$157Delta
Fri, May 15 - Sun, May 17
Multiple Airlines Logo
4:19 pm - 4:17 pm
STL
-
BNA
23h 58m
1 stop
Multiple Airlines Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m
1 stop
$172Multiple Airlines
Wed, May 20 - Thu, May 21
Delta Logo
6:00 am - 11:37 am
STL
-
BNA
5h 37m
1 stop
Delta Logo
7:46 pm - 11:59 pm
BNA
-
STL
4h 13m
1 stop
$179Delta
Thu, May 28 - Thu, Jun 4
Multiple Airlines Logo
6:33 pm - 12:20 pm
STL
-
CVG
16h 47m
2 stops
Multiple Airlines Logo
12:12 pm - 5:33 pm
CVG
-
STL
6h 21m
1 stop
$183Multiple Airlines
Tue, Jun 9 - Tue, Jun 16
American Airlines Logo
6:12 pm - 12:01 am
STL
-
LEX
4h 49m
1 stop
American Airlines Logo
8:11 pm - 11:44 pm
LEX
-
STL
4h 33m
1 stop
$271American Airlines
Sat, May 23 - Tue, May 26
American Airlines Logo
6:00 am - 10:42 am
STL
-
LEX
3h 42m
1 stop
American Airlines Logo
4:45 pm - 11:59 pm
LEX
-
STL
8h 14m
1 stop
$290American Airlines
Sat, May 23 - Mon, May 25
United Airlines Logo
7:05 pm - 11:49 pm
STL
-
SDF
3h 44m
1 stop
United Airlines Logo
9:00 am - 2:23 pm
SDF
-
STL
6h 23m
1 stop
$311United Airlines
Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
9:23 am - 4:55 pm
STL
-
LEX
6h 32m
1 stop
United Airlines Logo
5:50 pm - 10:54 pm
LEX
-
STL
6h 04m
1 stop
$341United 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$63
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly with an average 6% 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 9680 reviews
8.1Crew
6.6Food
7.7Boarding
7.3Comfort
7.1Entertainment
Airline reviews

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

4.0 OkayMichael, Apr 2026
SNA - DEN
Read more United Airlines reviews

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.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

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

Information on your arrival and departure airports

St. Louis (STL)