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Cheap flights from Kentucky to St. Louis from $63

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 1/21. 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.
Southern / Mokulele Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m1 stop
Southern / Mokulele Logo
9:50 am - 1:48 pm
STL
-
BNA
3h 58m1 stop
$152Southern / Mokulele
lun., ene. 12 - vie., ene. 23
Southern / Mokulele Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m1 stop
Southern / Mokulele Logo
9:50 am - 1:48 pm
STL
-
BNA
3h 58m1 stop
$153Southern / Mokulele
jue., ene. 15 - lun., ene. 19
Multiple Airlines Logo
9:25 am - 10:34 pm
BNA
-
STL
13h 09m1 stop
Multiple Airlines Logo
5:11 pm - 4:07 pm
STL
-
BNA
22h 56m1 stop
$168Multiple Airlines
jue., ene. 15 - dom., ene. 18
Multiple Airlines Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m1 stop
Multiple Airlines Logo
5:11 pm - 8:29 am
STL
-
BNA
15h 18m1 stop
$169Multiple Airlines
vie., ene. 9 - dom., ene. 11
Frontier Logo
5:05 am - 10:33 pm
CVG
-
STL
18h 28m1 stop
Frontier Logo
10:57 am - 7:18 pm
STL
-
CVG
7h 21m1 stop
$217Frontier
mar., dic. 23 - dom., ene. 4
Frontier Logo
3:20 pm - 11:59 pm
CVG
-
STL
9h 39m1 stop
Frontier Logo
3:49 pm - 12:59 am
STL
-
CVG
8h 10m1 stop
$218Frontier
sáb., feb. 14 - vie., feb. 20
Delta Logo
6:20 am - 9:24 am
LEX
-
STL
4h 04m1 stop
Delta Logo
9:59 am - 4:26 pm
STL
-
LEX
5h 27m1 stop
$254Delta
jue., ene. 1 - mié., ene. 7
United Airlines Logo
8:29 am - 2:30 pm
SDF
-
STL
7h 01m1 stop
United Airlines Logo
6:30 am - 1:24 pm
STL
-
SDF
5h 54m1 stop
$257United Airlines
mar., ene. 13 - mar., ene. 20
Delta Logo
5:40 am - 8:53 am
TYS
-
STL
4h 13m1 stop
Delta Logo
6:00 am - 11:08 am
STL
-
TYS
4h 08m1 stop
$279Delta
vie., ene. 30 - vie., feb. 6
United Airlines Logo
6:45 am - 11:02 am
TYS
-
STL
5h 17m1 stop
United Airlines Logo
8:30 am - 2:49 pm
STL
-
TYS
5h 19m1 stop
$299United Airlines
dom., ene. 18 - jue., ene. 22

Southern / Mokulele flights from Kentucky to St. Louis

Our best Southern / Mokulele deals on Kentucky to St. Louis flight tickets
Southern / Mokulele
Jan 12
BNA2:35 pmNashville Intl
4h 01m
1 stop
STL6:36 pmLambert-St Louis
Jan 23
STL9:50 amLambert-St Louis
3h 58m
1 stop
BNA1:48 pmNashville Intl
$152
Find similar
Southern / Mokulele
Jan 15
BNA2:35 pmNashville Intl
4h 01m
1 stop
STL6:36 pmLambert-St Louis
Jan 19
STL9:50 amLambert-St Louis
3h 58m
1 stop
BNA1:48 pmNashville Intl
$153
Find similar
Southern / Mokulele
Dec 30
BNA2:35 pmNashville Intl
4h 01m
1 stop
STL6:36 pmLambert-St Louis
Jan 3
STL9:50 amLambert-St Louis
3h 58m
1 stop
BNA1:48 pmNashville Intl
$154
Find similar

Southwest flights from Kentucky to St. Louis

Our best Southwest deals on Kentucky to St. Louis flight tickets
Southwest
Jan 28
BNA6:05 amNashville Intl
5h 40m
1 stop
STL11:45 amLambert-St Louis
Jan 28
STL2:20 pmLambert-St Louis
6h 35m
1 stop
BNA8:55 pmNashville Intl
$213
Find similar
Southwest
Jan 28
BNA8:50 amNashville Intl
1h 25m
STL10:15 amLambert-St Louis
Jan 28
STL11:35 amLambert-St Louis
1h 15m
BNA12:50 pmNashville Intl
$241
Find similar
Southwest
Jan 12
BNA4:05 pmNashville Intl
5h 20m
1 stop
STL9:25 pmLambert-St Louis
Jan 23
STL11:35 amLambert-St Louis
1h 15m
BNA12:50 pmNashville Intl
$251
Find similar

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 diciembre 16, 2025.
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

lun. 1/12

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

vie. 1/23

9:50 am-1:48 pm

1 stop3h 58m

$152

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

jue. 1/15

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

lun. 1/19

9:50 am-1:48 pm

1 stop3h 58m

$153

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

jue. 1/15

9:25 am-10:34 pm

1 stop13h 09m

Lambert-St Louis

dom. 1/18

5:11 pm-4:07 pm

1 stop22h 56m

$168

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

vie. 1/9

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

dom. 1/11

5:11 pm-8:29 am

1 stop15h 18m

$169

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

mar. 12/23

5:05 am-10:33 pm

1 stop18h 28m

Lambert-St Louis

dom. 1/4

10:57 am-7:18 pm

1 stop7h 21m

$217

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

sáb. 2/14

3:20 pm-11:59 pm

1 stop9h 39m

Lambert-St Louis

vie. 2/20

3:49 pm-12:59 am

1 stop8h 10m

$218

LexingtonSt. Louis

LEX - STL

LEXSTL

Lexington Blue Grass

jue. 1/1

6:20 am-9:24 am

1 stop4h 04m

Lambert-St Louis

mié. 1/7

9:59 am-4:26 pm

1 stop5h 27m

$254

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

mar. 1/13

8:29 am-2:30 pm

1 stop7h 01m

Lambert-St Louis

mar. 1/20

6:30 am-1:24 pm

1 stop5h 54m

$257

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

vie. 1/30

5:40 am-8:53 am

1 stop4h 13m

Lambert-St Louis

vie. 2/6

6:00 am-11:08 am

1 stop4h 08m

$279

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

dom. 1/18

6:45 am-11:02 am

1 stop5h 17m

Lambert-St Louis

jue. 1/22

8:30 am-2:49 pm

1 stop5h 19m

$299

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 day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Saturday when prices can be found for as low as $297. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $475. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Kentucky in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $304 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $344 per ticket.

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 20m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Kentucky to St. Louis takes 1h 20m
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

  • 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
11,049 reviews
Search American Airlines flights
DeltaPriceFrom $204Free CancellationRating
7.9
8,008 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
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Clayton
Festus
Glencoe
Farmington
Eureka
Edwardsville
Litchfield
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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