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$55+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SDF
Feb 26 — Mar 51
Wed 2/26
Wed 3/5
1 adult, Economy
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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 February 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$130
(Frontier)

One-way from

$55
(Frontier)

Popular in

February

Cheapest in

May

Average price

$728
Provider with most accurate pricing for Lambert-St Louis-Louisville Intl flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Louisville Intl flights.
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From Lambert-St Louis to Kentucky
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One-way flight from Lambert-St Louis to Kentucky
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Highest demand for flights based on searches. 13% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 February 21, 2025.

This Frontier deal was found by Cheapflights users on 2/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/76:38 pmSTL - CVG
1 stop9h 31mFrontier
Wed 4/92:28 pmCVG - STL
1 stop10h 18mFrontier
Deal found 2/19$130
This CheapOair deal was found by Cheapflights users on 2/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/65:24 pmSTL - BNA
1 stop18h 19mMultiple Airlines
Sun 3/92:35 pmBNA - STL
1 stop4h 06mMultiple Airlines
Deal found 2/19$169
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/79:50 amSTL - BNA
1 stop4h 05mSouthern / Mokulele
Mon 3/172:35 pmBNA - STL
1 stop4h 06mSouthern / Mokulele
Deal found 2/20$172
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Sat 4/123:44 pmSTL - TYS
1 stop7h 11mAmerican Airlines
Sat 4/1912:24 pmTYS - STL
1 stop8h 05mAmerican Airlines
Deal found 2/20$199
This Delta deal was found by Cheapflights users on 2/20. 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.
Thu 9/2511:51 amSTL - TYS
1 stop5h 26mDelta
Mon 9/297:25 pmTYS - STL
1 stop5h 14mDelta
Deal found 2/20$229
This Delta deal was found by Cheapflights users on 2/20. 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.
Mon 3/107:10 pmSTL - LEX
1 stop3h 44mDelta
Tue 3/185:57 pmLEX - STL
1 stop6h 34mDelta
Deal found 2/20$234
This Southwest deal was found by Cheapflights users on 2/20. 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.
Mon 4/1411:20 amSTL - BNA
Nonstop1h 10mSouthwest
Thu 4/171:05 pmBNA - STL
Nonstop1h 15mSouthwest
Deal found 2/20$237
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 3/101:51 pmSTL - LEX
1 stop7h 08mAmerican Airlines
Tue 3/187:35 amLEX - STL
2 stops9h 11mAmerican Airlines
Deal found 2/20$239
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Sat 3/226:00 amSTL - CVG
1 stop3h 35mAmerican Airlines
Sat 3/2911:00 amCVG - STL
1 stop5h 46mAmerican Airlines
Deal found 2/20$247
This Southwest deal was found by Cheapflights users on 2/19. 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.
Mon 3/104:55 pmSTL - CVG
2 stops6h 20mSouthwest
Fri 3/144:45 pmCVG - STL
1 stop7h 30mSouthwest
Deal found 2/19$267
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Thu 3/203:25 pmSTL - SDF
1 stop6h 06mUnited Airlines
Thu 3/277:02 amSDF - STL
1 stop6h 10mUnited Airlines
Deal found 2/20$278
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Wed 3/196:30 amSTL - CVG
1 stop5h 42mUnited Airlines
Wed 3/266:00 amCVG - STL
1 stop6h 02mUnited Airlines
Deal found 2/19$307

Find flights from St. Louis to Kentucky within your budget

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 February 21, 2025.

Fly from

St. Louis

Fly to

Kentucky

Route

Depart

Return

Price

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 4/7

6:38 pm-5:09 am

1 stop9h 31m

Cincinnati Cinci./N. Kentucky

Wed 4/9

2:28 pm-11:46 pm

1 stop10h 18m

$130

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

Thu 3/6

5:24 pm-11:43 am

1 stop18h 19m

Nashville Intl

Sun 3/9

2:35 pm-6:41 pm

1 stop4h 06m

$169

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

Fri 3/7

9:50 am-1:55 pm

1 stop4h 05m

Nashville Intl

Mon 3/17

2:35 pm-6:41 pm

1 stop4h 06m

$172

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Sat 4/12

3:44 pm-11:55 pm

1 stop7h 11m

Knoxville McGhee Tyson

Sat 4/19

12:24 pm-7:29 pm

1 stop8h 05m

$199

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Mon 3/10

7:10 pm-11:54 pm

1 stop3h 44m

Lexington Blue Grass

Tue 3/18

5:57 pm-11:31 pm

1 stop6h 34m

$234

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

Mon 4/14

11:20 am-12:30 pm

Nonstop1h 10m

Nashville Intl

Thu 4/17

1:05 pm-2:20 pm

Nonstop1h 15m

$237

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Thu 3/6

6:43 am-12:14 pm

1 stop4h 31m

Knoxville McGhee Tyson

Mon 3/10

11:59 am-3:40 pm

1 stop4h 41m

$239

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Mon 3/10

1:51 pm-9:59 pm

1 stop7h 08m

Lexington Blue Grass

Tue 3/18

7:35 am-3:46 pm

2 stops9h 11m

$239

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Sat 3/22

6:00 am-10:35 am

1 stop3h 35m

Cincinnati Cinci./N. Kentucky

Sat 3/29

11:00 am-3:46 pm

1 stop5h 46m

$247

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 3/10

4:55 pm-12:15 am

2 stops6h 20m

Cincinnati Cinci./N. Kentucky

Fri 3/14

4:45 pm-11:15 pm

1 stop7h 30m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 48 results
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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.

Travel insights for flights from St. Louis to Kentucky

Get recent, data-driven insights about flights from St. Louis to Kentucky including ideal travel times, pricing trends, and more.

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 February 21, 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.

Rainfall in Kentucky by month

Plan your trip to Kentucky by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kentucky ranges from 3.1 - 5.3 inches per month. May is typically the wettest month, when rainfall can reach 5.3 in. September is typically the driest time to visit Kentucky when rainfall is around 3.1 in.

Temperature in Kentucky by month

Plan your trip to Kentucky by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kentucky, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 February 21, 2025.
To help decide which airline to fly from St. Louis to Kentucky, see what other customers have to say about Southwest, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,401 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,401 reviews
Southwest
8.1
Very good
4,401 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,213 reviews
Southwest
8.1
Very good
4,401 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,759 reviews
Southwest
8.1
Very good
4,401 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,401 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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?

    $55 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and Southern / Mokulele, with prices starting from $74 and $83, 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 - Nashville Intl, Lambert-St Louis - Cincinnati Cinci./N. Kentucky or Lambert-St Louis - Knoxville McGhee Tyson 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

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Alternative routes for St. Louis to Kentucky

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from St. Louis to Kentucky

Discover the top airline 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 February 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$220Average$327FlexibilityNo cancel feeOn-time71%
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