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Cheap flights from Kentucky to St. Louis from $59

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 6/3. 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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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
6:25 am - 7:45 am
BNA
-
STL
1h 20mnonstop
Southwest Logo
1:45 pm - 2:55 pm
STL
-
BNA
1h 10mnonstop
$117Southwest
Tue, Jul 14 - Wed, Jul 15
Frontier Logo
12:24 pm - 8:52 am
CVG
-
STL
21h 28m
1 stop
Frontier Logo
5:06 pm - 11:14 am
STL
-
CVG
17h 08m
1 stop
$123Frontier
Sun, Jun 14 - Wed, Jun 17
Multiple Airlines Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m
1 stop
Multiple Airlines Logo
8:08 pm - 11:24 am
STL
-
BNA
15h 16m
1 stop
$177Multiple Airlines
Thu, Jun 4 - Tue, Jun 9
Delta Logo
7:46 pm - 11:59 pm
BNA
-
STL
4h 13m
1 stop
Delta Logo
7:08 am - 1:17 pm
STL
-
BNA
6h 09m
1 stop
$184Delta
Thu, Jun 4 - Wed, Jun 10
Multiple Airlines Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m
1 stop
Multiple Airlines Logo
5:06 pm - 9:40 pm
STL
-
BNA
28h 34m
2 stops
$200Multiple Airlines
Mon, Jun 1 - Fri, Jun 12
American Airlines Logo
8:10 pm - 11:57 pm
LEX
-
STL
4h 47m
1 stop
American Airlines Logo
6:12 pm - 11:59 pm
STL
-
LEX
4h 47m
1 stop
$280American Airlines
Fri, Jul 3 - Mon, Jul 6
Delta Logo
5:40 am - 8:16 am
TYS
-
STL
3h 36m
1 stop
Delta Logo
9:21 am - 2:49 pm
STL
-
TYS
4h 28m
1 stop
$285Delta
Tue, Jun 16 - Tue, Jun 23
American Airlines Logo
8:05 pm - 11:44 pm
SDF
-
STL
4h 39m
1 stop
American Airlines Logo
6:13 pm - 12:28 am
STL
-
SDF
5h 15m
1 stop
$295American Airlines
Tue, Jun 9 - Wed, Jun 10
United Airlines Logo
5:45 pm - 9:30 pm
LEX
-
STL
4h 45m
1 stop
United Airlines Logo
5:29 pm - 11:59 pm
STL
-
LEX
5h 30m
1 stop
$304United Airlines
Tue, Jun 2 - Tue, Jun 9
United Airlines Logo
7:55 pm - 11:29 pm
SDF
-
STL
4h 34m
1 stop
United Airlines Logo
11:25 am - 7:01 pm
STL
-
SDF
6h 36m
1 stop
$345United Airlines
Thu, Jul 23 - Tue, Jul 28

Southwest flights from Kentucky to St. Louis

Our best Southwest deals on Kentucky to St. Louis flight tickets
Southwest
Jul 14
BNA6:25 amNashville Intl
1h 20m
STL7:45 amLambert-St Louis
Jul 15
STL1:45 pmLambert-St Louis
1h 10m
BNA2:55 pmNashville Intl
$117
Southwest
Jul 14
BNA6:00 pmNashville Intl
5h 10m
1 stop
STL11:10 pmLambert-St Louis
Jul 15
STL6:15 pmLambert-St Louis
1h 05m
BNA7:20 pmNashville Intl
$127
Southwest
Jun 24
BNA6:25 amNashville Intl
1h 20m
STL7:45 amLambert-St Louis
Jun 24
STL10:15 amLambert-St Louis
1h 10m
BNA11:25 amNashville Intl
$137

American Airlines flights from Kentucky to St. Louis

Our best American Airlines deals on Kentucky to St. Louis flight tickets
American Airlines
Jul 3
LEX8:10 pmLexington Blue Grass
4h 47m
1 stop
STL11:57 pmLambert-St Louis
Jul 6
STL6:12 pmLambert-St Louis
4h 47m
1 stop
LEX11:59 pmLexington Blue Grass
$280
American Airlines
Jun 9
SDF8:05 pmLouisville Intl
4h 39m
1 stop
STL11:44 pmLambert-St Louis
Jun 10
STL6:13 pmLambert-St Louis
5h 15m
1 stop
SDF12:28 amLouisville Intl
$295
American Airlines
May 30
TRI5:23 pmBlountville Tri Cities TN/VA
5h 19m
1 stop
STL9:42 pmLambert-St Louis
Jun 3
STL9:24 amLambert-St Louis
5h 23m
1 stop
TRI3:47 pmBlountville Tri Cities TN/VA
$319

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 May 18, 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

Cheapest round-trip
Quickest round-trip

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Tue 7/14

6:25 am-7:45 am

Nonstop1h 20m

Lambert-St Louis

Wed 7/15

1:45 pm-2:55 pm

Nonstop1h 10m

$117

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Sun 6/14

12:24 pm-8:52 am

1 stop21h 28m

Lambert-St Louis

Wed 6/17

5:06 pm-11:14 am

1 stop17h 08m

$123

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Thu 6/4

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Tue 6/9

8:08 pm-11:24 am

1 stop15h 16m

$177

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Thu 6/4

7:46 pm-11:59 pm

1 stop4h 13m

Lambert-St Louis

Wed 6/10

7:08 am-1:17 pm

1 stop6h 09m

$184

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Mon 6/1

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Fri 6/12

5:06 pm-9:40 pm

2 stops28h 34m

$200

LexingtonSt. Louis

LEX - STL

LEXSTL

Lexington Blue Grass

Fri 7/3

8:10 pm-11:57 pm

1 stop4h 47m

Lambert-St Louis

Mon 7/6

6:12 pm-11:59 pm

1 stop4h 47m

$280

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Tue 6/16

5:40 am-8:16 am

1 stop3h 36m

Lambert-St Louis

Tue 6/23

9:21 am-2:49 pm

1 stop4h 28m

$285

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 6/9

8:05 pm-11:44 pm

1 stop4h 39m

Lambert-St Louis

Wed 6/10

6:13 pm-12:28 am

1 stop5h 15m

$295

LexingtonSt. Louis

LEX - STL

LEXSTL

Lexington Blue Grass

Tue 6/2

5:45 pm-9:30 pm

1 stop4h 45m

Lambert-St Louis

Tue 6/9

5:29 pm-11:59 pm

1 stop5h 30m

$304

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 7/23

7:55 pm-11:29 pm

1 stop4h 34m

Lambert-St Louis

Tue 7/28

11:25 am-7:01 pm

1 stop6h 36m

$345

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 month to fly to St. Louis?

In general, December is the cheapest month to fly from Kentucky to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of July is another great option to travel to St. Louis, with average flight prices from Kentucky averaging around $0.

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

Every day

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 every day.
There is 1 airport in St. Louis. From Kentucky there are direct flights to Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Kentucky to St. Louis

  • 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
7.1
11,648 reviews
Search American Airlines 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
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Festus
Eureka
Clayton
Litchfield
Edwardsville
Shrewsbury
Grafton

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.

An easier way to manage your St. Louis trip

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