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Cheap flights from Kentucky to St. Louis 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 Kentucky to St. Louis departing on 3/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Kentucky to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
8:50 am - 10:15 am
BNA
-
STL
1h 25mnonstop
Southwest Logo
5:50 pm - 7:00 pm
STL
-
BNA
1h 10mnonstop
$97Southwest
Tue, Mar 3 - Tue, Mar 3
Southwest Logo
8:50 am - 10:15 am
BNA
-
STL
1h 25mnonstop
Southwest Logo
2:20 pm - 8:55 pm
STL
-
BNA
6h 35m
1 stop
$107Southwest
Tue, Mar 3 - Tue, Mar 3
Southern / Mokulele Logo
2:35 pm - 6:41 pm
BNA
-
STL
4h 06m
1 stop
Southern / Mokulele Logo
9:50 am - 1:55 pm
STL
-
BNA
4h 05m
1 stop
$155Southern / Mokulele
Mon, Mar 9 - Mon, Mar 16
Southern / Mokulele Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m
1 stop
Southern / Mokulele Logo
9:50 am - 1:48 pm
STL
-
BNA
3h 58m
1 stop
$171Southern / Mokulele
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
1:07 pm - 6:51 am
CVG
-
STL
18h 44m
1 stop
Frontier Logo
3:49 pm - 9:25 pm
STL
-
CVG
28h 36m
1 stop
$174Frontier
Fri, Feb 27 - Tue, Mar 3
Frontier Logo
7:20 am - 9:49 am
CVG
-
STL
27h 29m
1 stop
Frontier Logo
11:27 am - 9:55 pm
STL
-
CVG
9h 28m
1 stop
$195Frontier
Sun, Mar 29 - Tue, Mar 31
United Airlines Logo
5:43 pm - 10:59 pm
TYS
-
STL
6h 16m
1 stop
United Airlines Logo
8:30 am - 2:50 pm
STL
-
TYS
5h 20m
1 stop
$233United Airlines
Tue, Mar 10 - Tue, Mar 17
American Airlines Logo
5:40 am - 11:01 am
TYS
-
STL
6h 21m
1 stop
American Airlines Logo
5:12 am - 11:31 am
STL
-
TYS
5h 19m
1 stop
$245American Airlines
Wed, Mar 4 - Thu, Mar 5
United Airlines Logo
5:45 pm - 9:05 pm
LEX
-
STL
4h 20m
1 stop
United Airlines Logo
7:41 am - 1:15 pm
STL
-
LEX
4h 34m
1 stop
$259United Airlines
Tue, Feb 24 - Sat, Feb 28
American Airlines Logo
5:00 am - 8:51 am
CVG
-
STL
4h 51m
1 stop
American Airlines Logo
8:00 am - 6:11 pm
STL
-
CVG
9h 11m
1 stop
$261American Airlines
Mon, Mar 9 - Wed, Mar 11

Southern / Mokulele flights from Kentucky to St. Louis

Our best Southern / Mokulele deals on Kentucky to St. Louis flight tickets
Southern / Mokulele
Mar 9
BNA2:35 pmNashville Intl
4h 06m
1 stop
STL6:41 pmLambert-St Louis
Mar 16
STL9:50 amLambert-St Louis
4h 05m
1 stop
BNA1:55 pmNashville Intl
$155
Southern / Mokulele
Feb 26
BNA2:35 pmNashville Intl
4h 01m
1 stop
STL6:36 pmLambert-St Louis
Mar 2
STL9:50 amLambert-St Louis
3h 58m
1 stop
BNA1:48 pmNashville Intl
$171
Southern / Mokulele
Feb 24
BNA2:35 pmNashville Intl
4h 01m
1 stop
STL6:36 pmLambert-St Louis
Feb 28
STL9:50 amLambert-St Louis
3h 58m
1 stop
BNA1:48 pmNashville Intl
$172

Frontier flights from Kentucky to St. Louis

Our best Frontier deals on Kentucky to St. Louis flight tickets
Frontier
Feb 27
CVG1:07 pmCincinnati Cinci./N. Kentucky
18h 44m
1 stop
STL6:51 amLambert-St Louis
Mar 3
STL3:49 pmLambert-St Louis
28h 36m
1 stop
CVG9:25 pmCincinnati Cinci./N. Kentucky
$174
Frontier
Mar 29
CVG7:20 amCincinnati Cinci./N. Kentucky
27h 29m
1 stop
STL9:49 amLambert-St Louis
Mar 31
STL11:27 amLambert-St Louis
9h 28m
1 stop
CVG9:55 pmCincinnati Cinci./N. Kentucky
$195
Frontier
Feb 17
CVG3:20 pmCincinnati Cinci./N. Kentucky
16h 31m
2 stops
STL6:51 amLambert-St Louis
Feb 18
STL8:17 pmLambert-St Louis
20h 15m
1 stop
CVG5:32 pmCincinnati Cinci./N. Kentucky
$210

momondo 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, momondo users made 832,500 searches. Data last updated February 12, 2026.
Use the filters below to find and compare flights from Kentucky to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Tue 3/3

8:50 am-10:15 am

Nonstop1h 25m

Lambert-St Louis

Tue 3/3

5:50 pm-7:00 pm

Nonstop1h 10m

$97

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Tue 3/3

8:50 am-10:15 am

Nonstop1h 25m

Lambert-St Louis

Tue 3/3

2:20 pm-8:55 pm

1 stop6h 35m

$107

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Mon 3/9

2:35 pm-6:41 pm

1 stop4h 06m

Lambert-St Louis

Mon 3/16

9:50 am-1:55 pm

1 stop4h 05m

$155

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Thu 2/26

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Mon 3/2

9:50 am-1:48 pm

1 stop3h 58m

$171

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 2/27

1:07 pm-6:51 am

1 stop18h 44m

Lambert-St Louis

Tue 3/3

3:49 pm-9:25 pm

1 stop28h 36m

$174

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sun 3/29

7:20 am-9:49 am

1 stop27h 29m

Lambert-St Louis

Tue 3/31

11:27 am-9:55 pm

1 stop9h 28m

$195

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Tue 3/10

5:43 pm-10:59 pm

1 stop6h 16m

Lambert-St Louis

Tue 3/17

8:30 am-2:50 pm

1 stop5h 20m

$233

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Wed 3/4

5:40 am-11:01 am

1 stop6h 21m

Lambert-St Louis

Thu 3/5

5:12 am-11:31 am

1 stop5h 19m

$245

LexingtonSt. Louis

LEX - STL

LEXSTL

Lexington Blue Grass

Tue 2/24

5:45 pm-9:05 pm

1 stop4h 20m

Lambert-St Louis

Sat 2/28

7:41 am-1:15 pm

1 stop4h 34m

$259

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Mon 3/9

5:00 am-8:51 am

1 stop4h 51m

Lambert-St Louis

Wed 3/11

8:00 am-6:11 pm

1 stop9h 11m

$261

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 St. Louis from

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

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 Kentucky to Lambert-St Louis flight route?

Fly from Louisville Intl to Lambert-St Louis for the best Kentucky - Lambert-St Louis flight prices

What cabin class options are available on Kentucky to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on Kentucky to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Kentucky to St. Louis flight deals and tips

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

Fastest flight time

1h 10m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in St. Louis

1 airport
The fastest flight from Kentucky to St. Louis takes 1h 10m
Direct flights go from Kentucky to St. Louis on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in St. Louis. From Kentucky there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • When did momondo last update prices for flights from Kentucky to Lambert-St Louis Airport?

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Kentucky to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Kentucky to St. Louis

Compare and see reviews for airlines that fly from Kentucky to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $152Free CancellationRating
7.2
11,271 reviews
Search American Airlines flights
DeltaPriceFrom $204Free CancellationRating
7.9
8,180 reviews
Search Delta flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Kentucky to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Kentucky to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Kentucky to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Kentucky to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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