Cheap flights from St. Louis to Kentucky from $49

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Kentucky departing on 4/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Kentucky

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
2:25 pm - 3:35 pm
STL
-
BNA
1h 10mnonstop
Southwest Logo
6:00 am - 7:20 am
BNA
-
STL
1h 20mnonstop
$97Southwest
Tue, Mar 10 - Tue, Mar 17
Southwest Logo
5:40 am - 9:15 am
STL
-
BNA
3h 35m
1 stop
Southwest Logo
1:35 pm - 2:55 pm
BNA
-
STL
1h 20mnonstop
$107Southwest
Tue, Mar 10 - Tue, Mar 17
Southwest Logo
7:35 am - 8:45 am
STL
-
BNA
1h 10mnonstop
Southwest Logo
12:40 pm - 5:55 pm
BNA
-
STL
5h 15m
2 stops
$112Southwest
Tue, May 5 - Tue, May 5
Southern / Mokulele Logo
9:50 am - 1:48 pm
STL
-
BNA
3h 58m
1 stop
Southern / Mokulele Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m
1 stop
$155Southern / Mokulele
Sat, Feb 28 - Sun, Mar 1
Frontier Logo
3:49 pm - 9:25 pm
STL
-
CVG
28h 36m
1 stop
Frontier Logo
5:20 am - 11:59 pm
CVG
-
STL
19h 39m
1 stop
$160Frontier
Mon, Feb 23 - Thu, Feb 26
Frontier Logo
8:10 pm - 7:23 am
STL
-
CVG
10h 13m
1 stop
Frontier Logo
7:41 pm - 10:37 am
CVG
-
STL
15h 56m
1 stop
$175Frontier
Mon, Mar 16 - Tue, Mar 17
Delta Logo
6:00 am - 11:08 am
STL
-
TYS
4h 08m
1 stop
Delta Logo
5:40 am - 9:05 am
TYS
-
STL
4h 25m
1 stop
$233Delta
Wed, Mar 4 - Wed, Mar 11
Delta Logo
6:00 am - 11:17 am
STL
-
TYS
4h 17m
1 stop
Delta Logo
5:40 am - 9:02 am
TYS
-
STL
4h 22m
1 stop
$245Delta
Tue, Mar 31 - Sat, Apr 4
American Airlines Logo
5:12 am - 1:23 pm
STL
-
LEX
7h 11m
1 stop
American Airlines Logo
10:27 am - 1:39 pm
LEX
-
STL
4h 12m
1 stop
$250American Airlines
Wed, Mar 25 - Wed, Apr 1
American Airlines Logo
9:37 am - 5:16 pm
STL
-
LEX
6h 39m
2 stops
American Airlines Logo
6:40 am - 10:03 am
LEX
-
STL
4h 23m
1 stop
$280American Airlines
Wed, Mar 25 - Wed, Apr 1

Southern / Mokulele flights from St. Louis to Kentucky

Our best Southern / Mokulele deals on St. Louis to Kentucky flight tickets
Southern / Mokulele
Feb 28
STL9:50 amLambert-St Louis
3h 58m
1 stop
BNA1:48 pmNashville Intl
Mar 1
BNA2:35 pmNashville Intl
4h 01m
1 stop
STL6:36 pmLambert-St Louis
$155
Southern / Mokulele
Feb 23
STL9:50 amLambert-St Louis
3h 58m
1 stop
BNA1:48 pmNashville Intl
Feb 27
BNA2:35 pmNashville Intl
4h 01m
1 stop
STL6:36 pmLambert-St Louis
$172
Southern / Mokulele
Apr 17
STL9:50 amLambert-St Louis
3h 58m
1 stop
BNA1:48 pmNashville Intl
Apr 20
BNA2:35 pmNashville Intl
4h 01m
1 stop
STL6:36 pmLambert-St Louis
$173

Southwest flights from St. Louis to Kentucky

Our best Southwest deals on St. Louis to Kentucky flight tickets
Southwest
Mar 10
STL2:25 pmLambert-St Louis
1h 10m
BNA3:35 pmNashville Intl
Mar 17
BNA6:00 amNashville Intl
1h 20m
STL7:20 amLambert-St Louis
$97
Southwest
Mar 10
STL5:40 amLambert-St Louis
3h 35m
1 stop
BNA9:15 amNashville Intl
Mar 17
BNA1:35 pmNashville Intl
1h 20m
STL2:55 pmLambert-St Louis
$107
Southwest
May 5
STL7:35 amLambert-St Louis
1h 10m
BNA8:45 amNashville Intl
May 5
BNA12:40 pmNashville Intl
5h 15m
2 stops
STL5:55 pmLambert-St Louis
$112

momondo 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, momondo users made 832,500 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from St. Louis to Kentucky that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

Tue 3/10

2:25 pm-3:35 pm

Nonstop1h 10m

Nashville Intl

Tue 3/17

6:00 am-7:20 am

Nonstop1h 20m

$97

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

Tue 3/10

5:40 am-9:15 am

1 stop3h 35m

Nashville Intl

Tue 3/17

1:35 pm-2:55 pm

Nonstop1h 20m

$107

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

Tue 5/5

7:35 am-8:45 am

Nonstop1h 10m

Nashville Intl

Tue 5/5

12:40 pm-5:55 pm

2 stops5h 15m

$112

St. LouisNashville

STL - BNA

STLBNA

Lambert-St Louis

Sat 2/28

9:50 am-1:48 pm

1 stop3h 58m

Nashville Intl

Sun 3/1

2:35 pm-6:36 pm

1 stop4h 01m

$155

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 2/23

3:49 pm-9:25 pm

1 stop28h 36m

Cincinnati Cinci./N. Kentucky

Thu 2/26

5:20 am-11:59 pm

1 stop19h 39m

$160

St. LouisCincinnati

STL - CVG

STLCVG

Lambert-St Louis

Mon 3/16

8:10 pm-7:23 am

1 stop10h 13m

Cincinnati Cinci./N. Kentucky

Tue 3/17

7:41 pm-10:37 am

1 stop15h 56m

$175

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Wed 3/4

6:00 am-11:08 am

1 stop4h 08m

Knoxville McGhee Tyson

Wed 3/11

5:40 am-9:05 am

1 stop4h 25m

$233

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Tue 3/31

6:00 am-11:17 am

1 stop4h 17m

Knoxville McGhee Tyson

Sat 4/4

5:40 am-9:02 am

1 stop4h 22m

$245

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Wed 3/25

5:12 am-1:23 pm

1 stop7h 11m

Lexington Blue Grass

Wed 4/1

10:27 am-1:39 pm

1 stop4h 12m

$250

St. LouisLexington

STL - LEX

STLLEX

Lambert-St Louis

Wed 3/25

9:37 am-5:16 pm

2 stops6h 39m

Lexington Blue Grass

Wed 4/1

6:40 am-10:03 am

1 stop4h 23m

$280

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Kentucky from

How to get the cheapest flight ticket from St. Louis to Kentucky

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Lambert-St Louis to Kentucky?

Southwest, Frontier, and American Airlines are the most popular carriers operating from Lambert-St Louis to Kentucky

What airlines fly to Kentucky?

Delta, Southwest and American Airlines are the top three most popular airlines that fly to Kentucky from St. Louis according to our data. Delta is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Kentucky. Keep in mind that there are 3 different airlines that fly to Kentucky on a routine basis, so you have a few additional options to choose from.

Cheap St. Louis to Kentucky flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Kentucky

Fastest flight time

1h 10m

Direct flights

Mon, Tue, Wed, Fri, Sat and Sun

Airports in Kentucky

43 airports
The fastest flight from St. Louis to Kentucky takes 1h 10m
Direct flights go from St. Louis to Kentucky on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There are 43 airports in Kentucky. From St. Louis there are direct flights to Nashville Intl (BNA).
  • When did momondo last update prices for flights from Lambert-St Louis Airport to Kentucky?

    Prices for flights from Lambert-St Louis Airport to Kentucky refresh daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Kentucky?

  • How old do you have to be to fly from Lambert-St Louis Airport to Kentucky?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Kentucky.

  • What documentation or ID do you need to fly to Kentucky?

    The travel and health documents you'll need for your trip to Kentucky may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Kentucky. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Kentucky

Compare and see reviews for airlines that fly from St. Louis to Kentucky with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $118Free CancellationRating
7.9
8,180 reviews
Search Delta flights
SouthwestPriceFrom $216Free CancellationRating
8.0
4,280 reviews
Search Southwest flights
American AirlinesPriceFrom $253Free CancellationRating
7.2
11,271 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Kentucky?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Kentucky from St. Louis.

Can I find flights from St. Louis to Kentucky with flexible booking policies on momondo?

Yes. All flights to Kentucky from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Kentucky?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Kentucky.

I’m not ready to book a flight from St. Louis to Kentucky right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Kentucky flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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1 adult
Fri 3/13
Fri 3/20

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Popular flights according to clicks in the last 7 days on momondo