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St. Louis

$77+ Cheap flights from Kentucky to St. Louis (STL)

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Kentucky to St. Louis

Keep the following information in mind while searching for Kentucky to St. Louis flight deals. Data was last updated July 31, 2025.

Round-trip from

$157
(KAYAK)

One-way from

$77
(Trip.com)

Popular in

October

Cheapest in

August

Average price

$424
From Kentucky to Lambert-St Louis
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One-way flight from Kentucky to Lambert-St Louis
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Highest demand for flights based on searches. 11% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Kentucky to St. Louis

Cheapest flights from Kentucky to St. Louis
Explore the most affordable flight options available from Kentucky to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/72:35 pmBNA - STL
1 stop4h 06mSouthern / Mokulele
Fri 8/89:50 amSTL - BNA
1 stop4h 05mSouthern / Mokulele
Deal found 7/29$157
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/52:35 pmBNA - STL
1 stop4h 01mMultiple Airlines
Sun 9/712:05 pmSTL - BNA
1 stop22h 19mMultiple Airlines
Deal found 7/30$166
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.
Thu 8/285:03 pmBNA - STL
1 stop20h 29mSpirit Airlines
Thu 9/412:05 pmSTL - BNA
1 stop22h 19mSpirit Airlines
Deal found 7/29$169
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.
Tue 9/98:15 amBNA - STL
Nonstop1h 20mSouthwest
Wed 9/105:50 pmSTL - BNA
Nonstop1h 10mSouthwest
Deal found 7/30$177
This FlightHub deal was found by Cheapflights users on 7/31. 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.
Tue 8/56:20 amBNA - STL
1 stop26h 51mFrontier
Wed 8/67:29 pmSTL - BNA
1 stop23h 13mFrontier
Deal found 7/31$185
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.
Tue 8/129:30 amCVG - STL
1 stop15h 17mFrontier
Wed 8/137:29 pmSTL - CVG
1 stop20h 39mFrontier
Deal found 7/29$185
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:00 amSDF - STL
1 stop4h 16mAmerican Airlines
Sat 9/206:10 amSTL - SDF
1 stop6h 53mAmerican Airlines
Deal found 7/30$187
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.
Wed 8/276:00 amCVG - STL
1 stop4h 15mDelta
Wed 9/35:25 pmSTL - CVG
1 stop4h 41mDelta
Deal found 7/28$197
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.
Wed 8/2712:45 pmSDF - STL
1 stop4h 21mDelta
Wed 9/35:30 pmSTL - SDF
1 stop4h 30mDelta
Deal found 7/28$197
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.
Wed 8/273:55 pmCVG - STL
2 stops7h 10mSouthwest
Sat 8/307:15 amSTL - CVG
1 stop4h 50mSouthwest
Deal found 7/29$202
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.
Sat 8/303:31 pmCVG - STL
1 stop4h 50mAmerican Airlines
Sun 8/318:10 amSTL - CVG
1 stop5h 14mAmerican Airlines
Deal found 7/29$217
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.
Sat 8/307:20 amBNA - STL
1 stop8h 29mAmerican Airlines
Sun 8/317:23 amSTL - BNA
1 stop4h 39mAmerican Airlines
Deal found 7/29$223

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kentucky to St. Louis 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 July 31, 2025.
Use the filters below to find and compare flights from Kentucky to St. Louis that are best for you.

Fly from

Kentucky

Fly to

St. Louis

Route

Depart

Return

Price

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Thu 8/7

2:35 pm-6:41 pm

1 stop4h 06m

Lambert-St Louis

Fri 8/8

9:50 am-1:55 pm

1 stop4h 05m

$157

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Fri 9/5

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Sun 9/7

12:05 pm-10:24 am

1 stop22h 19m

$166

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Thu 8/28

5:03 pm-1:32 pm

1 stop20h 29m

Lambert-St Louis

Thu 9/4

12:05 pm-10:24 am

1 stop22h 19m

$169

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Tue 9/9

8:15 am-9:35 am

Nonstop1h 20m

Lambert-St Louis

Wed 9/10

5:50 pm-7:00 pm

Nonstop1h 10m

$177

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Tue 8/5

6:20 am-9:11 am

1 stop26h 51m

Lambert-St Louis

Wed 8/6

7:29 pm-6:42 pm

1 stop23h 13m

$185

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 8/12

9:30 am-11:47 pm

1 stop15h 17m

Lambert-St Louis

Wed 8/13

7:29 pm-5:08 pm

1 stop20h 39m

$185

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 9/16

6:00 am-9:16 am

1 stop4h 16m

Lambert-St Louis

Sat 9/20

6:10 am-2:03 pm

1 stop6h 53m

$187

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 8/27

6:00 am-9:15 am

1 stop4h 15m

Lambert-St Louis

Wed 9/3

5:25 pm-11:06 pm

1 stop4h 41m

$197

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Wed 8/27

12:45 pm-4:06 pm

1 stop4h 21m

Lambert-St Louis

Wed 9/3

5:30 pm-11:00 pm

1 stop4h 30m

$197

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 8/27

3:55 pm-10:05 pm

2 stops7h 10m

Lambert-St Louis

Sat 8/30

7:15 am-1:05 pm

1 stop4h 50m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 51 results
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Best time to book a flight from Kentucky to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Kentucky 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 Kentucky to St. Louis

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

Currently, August is the cheapest month in which you can book a flight from Kentucky to St. Louis (average of $311). Flying from Kentucky to St. Louis in March is currently the most expensive (average of $356). 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 KY to STL?

Find hourly flight availability from Kentucky to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

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

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated July 31, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Kentucky to St. Louis to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
8,900 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
4,246 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

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 Kentucky to St. Louis. 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 into for flights to St. Louis from Kentucky?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Kentucky. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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

    One-way options have recently been found by users for as low as $77 on Southern / Mokulele. Other airlines that offer cheap prices include Southwest from $89 and Frontier from $89 one-way.

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

    Most travelers choose Cincinnati Cinci./N. Kentucky - Lambert-St Louis, Nashville Intl - Lambert-St Louis or Knoxville McGhee Tyson - Lambert-St Louis when deciding on the best route from Kentucky to St. Louis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Kentucky to St. Louis 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 Kentucky to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Kentucky to St. Louis (average of $311). Flying from Kentucky to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Festus
Farmington

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Alternative routes for Kentucky to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Kentucky to St. Louis

Discover the top 2 airlines that operate flights from Kentucky to St. Louis. 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$204Average$326FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$228Average$288FlexibilityNo cancel feeOn-time71%

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