HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kentucky

$79+ Cheap flights from St. Louis (STL) to Kentucky

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SDF
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Kentucky with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Kentucky

Keep the following information in mind while searching for St. Louis to Kentucky flight deals. Data was last updated julio 30, 2025.

Round-trip from

$157
(KAYAK)

One-way from

$79
(Cheapflightsfares)

Popular in

November

Cheapest in

April

Average price

$590
From Lambert-St Louis to Kentucky
Search Deals
One-way flight from Lambert-St Louis to Kentucky
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from St. Louis to Kentucky

Cheapest flights from St. Louis to Kentucky
Explore the most affordable flight options available from St. Louis to Kentucky. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.

This KAYAK deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/129:50 amSTL - BNA
1 stop4h 05mSouthern / Mokulele
jue. 8/142:35 pmBNA - STL
1 stop4h 06mSouthern / Mokulele
Deal found 7/28$157
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/265:50 pmSTL - BNA
Nonstop1h 10mSouthwest
mar. 9/26:45 pmBNA - STL
Nonstop1h 20mSouthwest
Deal found 7/30$177
This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/266:06 amSTL - SDF
1 stop10h 37mAmerican Airlines
mar. 9/26:44 amSDF - STL
1 stop10h 05mAmerican Airlines
Deal found 7/29$177
This FlightHub deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/307:29 pmSTL - BNA
1 stop23h 13mMultiple Airlines
lun. 8/42:35 pmBNA - STL
1 stop4h 06mMultiple Airlines
Deal found 7/28$183
This Mytrip deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/137:29 pmSTL - CVG
1 stop20h 39mFrontier
sáb. 8/168:00 amCVG - STL
1 stop16h 47mFrontier
Deal found 7/30$187
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/211:51 amSTL - BNA
1 stop6h 43mDelta
sáb. 12/66:30 amBNA - STL
1 stop6h 27mDelta
Deal found 7/27$187
This FlightHub deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1112:05 pmSTL - BNA
1 stop22h 19mSpirit Airlines
mié. 9/174:50 pmBNA - STL
1 stop16h 50mSpirit Airlines
Deal found 7/29$190
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/305:30 pmSTL - TYS
1 stop4h 07mUnited Airlines
dom. 8/315:45 amTYS - STL
1 stop5h 17mUnited Airlines
Deal found 7/29$194
This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/1910:16 amSTL - CVG
1 stop6h 37mAmerican Airlines
mié. 8/203:37 pmCVG - STL
1 stop6h 15mAmerican Airlines
Deal found 7/29$197
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/305:15 amSTL - TYS
1 stop5h 15mAmerican Airlines
dom. 8/315:12 pmTYS - STL
1 stop4h 50mAmerican Airlines
Deal found 7/28$199
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/197:00 amSTL - CVG
1 stop4h 25mSouthwest
mié. 8/201:15 pmCVG - STL
2 stops7h 45mSouthwest
Deal found 7/29$202
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/276:00 amSTL - TYS
1 stop3h 42mDelta
dom. 8/315:45 amTYS - STL
1 stop4h 30mDelta
Deal found 7/28$214

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Kentucky that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 30, 2025.
Use the filters below to find and compare flights from St. Louis to Kentucky that are best for you.

Fly from

St. Louis

Fly to

Kentucky

Route

Depart

Return

Price

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

mar. 8/12

9:50 am-1:55 pm

1 stop4h 05m

Nashville Intl

jue. 8/14

2:35 pm-6:41 pm

1 stop4h 06m

$157

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

mar. 8/26

6:06 am-5:43 pm

1 stop10h 37m

Louisville Intl

mar. 9/2

6:44 am-3:49 pm

1 stop10h 05m

$177

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

mar. 8/26

5:50 pm-7:00 pm

Nonstop1h 10m

Nashville Intl

mar. 9/2

6:45 pm-8:05 pm

Nonstop1h 20m

$177

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

mié. 8/13

7:29 pm-5:08 pm

1 stop20h 39m

Cincinnati Cinci./N. Kentucky

sáb. 8/16

8:00 am-11:47 pm

1 stop16h 47m

$187

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

vie. 10/24

9:50 am-1:48 pm

1 stop3h 58m

Nashville Intl

sáb. 10/25

7:00 am-9:07 am

1 stop26h 07m

$189

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

jue. 9/11

12:05 pm-10:24 am

1 stop22h 19m

Nashville Intl

mié. 9/17

4:50 pm-9:40 am

1 stop16h 50m

$190

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

sáb. 8/30

5:30 pm-10:37 pm

1 stop4h 07m

Knoxville McGhee Tyson

dom. 8/31

5:45 am-10:02 am

1 stop5h 17m

$194

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

mar. 8/19

10:16 am-5:53 pm

1 stop6h 37m

Cincinnati Cinci./N. Kentucky

mié. 8/20

3:37 pm-8:52 pm

1 stop6h 15m

$197

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

sáb. 8/30

5:15 am-11:30 am

1 stop5h 15m

Knoxville McGhee Tyson

dom. 8/31

5:12 pm-9:02 pm

1 stop4h 50m

$199

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

mar. 8/19

7:00 am-12:25 pm

1 stop4h 25m

Cincinnati Cinci./N. Kentucky

mié. 8/20

1:15 pm-8:00 pm

2 stops7h 45m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 51 results
1
2
3
...
6

Best time to book a flight from St. Louis to Kentucky

Have a flexible travel schedule? Discover the best time to fly to Kentucky from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from St. Louis to Kentucky?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Kentucky (average of $299). Flying from St. Louis to Kentucky in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to KY?

Find hourly flight availability from St. Louis to Kentucky. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 30, 2025.

When flying from St. Louis to Kentucky, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from St. Louis to Kentucky?

Reviews of airlines servicing Kentucky

Get insights into the airlines that provide service to Kentucky. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kentucky. Reviews last updated julio 30, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from St. Louis to Kentucky have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Kentucky. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Kentucky?

    For a flight from St. Louis to Kentucky, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

  • What are the cheapest airlines to fly from St. Louis to Kentucky one-way?

    $79 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Southern / Mokulele and Delta, with prices starting from $83 and $94, respectively.

  • What are the most popular routes from St. Louis to Kentucky?

    When deciding which route to take from St. Louis to Kentucky consider Lambert-St Louis - Knoxville McGhee Tyson, Lambert-St Louis - Nashville Intl or Lambert-St Louis - Cincinnati Cinci./N. Kentucky as they are the most popular.

  • Can I find deals for flights from St. Louis to Kentucky that include hotel bookings?

    Yes. In addition to deals on St. Louis to Kentucky flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Kentucky?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Kentucky.

  • Can I find deals for business class flights from St. Louis to Kentucky?

    Yes. Cheapflights offers flight deals from St. Louis to Kentucky by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Kentucky?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Kentucky (average of $299). Flying from St. Louis to Kentucky in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Kentucky

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Las Vegas flights
Kansas City to Seattle flights
St. Louis to Seattle flights
Kansas City to Denver flights
St. Louis to LaGuardia flights
Kansas City to Las Vegas flights
St. Louis to Newark flights
St. Louis to Denver flights
St. Louis to Orlando flights
Kansas City to LaGuardia flights
Kansas City to San Diego flights
Kansas City to O'Hare Intl flights
Kansas City to John F Kennedy Intl flights
Kansas City to Boston flights
Kansas City to Newark flights
St. Louis to John F Kennedy Intl flights
St. Louis to Los Angeles flights
St. Louis to Dallas/Fort Worth flights
Kansas City to Dallas/Fort Worth flights
Kansas City to Hobby flights
St. Louis to Boston flights
St. Louis to Miami flights
Kansas City to Orlando flights
Kansas City to George Bush Intcntl flights
Kansas City to Los Angeles flights
St. Louis to Minneapolis flights
St. Louis to Atlanta flights
Kansas City to Miami flights
St. Louis to Salt Lake City flights
Kansas City to Tampa flights
Kansas City to Atlanta flights
Kansas City to Minneapolis flights
St. Louis to Dulles Intl flights
Kansas City to San Francisco flights
Kansas City to Midway flights
St. Louis to Sky Harbor Intl flights
St. Louis to O'Hare Intl flights
Kansas City to Honolulu flights
Kansas City to Dulles Intl flights
Kansas City to Reagan-National flights
Springfield to Boise flights
Kansas City to Sky Harbor Intl flights
St. Louis to Fort Lauderdale flights
St. Louis to San Diego flights
St. Louis to Charlotte flights
St. Louis to Honolulu flights
St. Louis to George Bush Intcntl flights
St. Louis to Anchorage flights
Kansas City to Salt Lake City flights
St. Louis to Hobby flights

Top 4 airlines flying from St. Louis to Kentucky

Discover the top 4 airlines that operate flights from St. Louis to Kentucky. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$226Average$550FlexibilityNo cancel feeOn-time63%
DeltaCheapest$228Average$288FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$228Average$332FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$335FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.