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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 4/29. 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.
Frontier Logo
5:20 pm - 11:19 pm
CVG
-
STL
6h 59m
1 stop
Frontier Logo
8:39 am - 7:23 pm
STL
-
CVG
9h 44m
1 stop
$140Frontier
Tue, Apr 21 - Fri, Apr 24
Frontier Logo
8:17 pm - 7:32 pm
CVG
-
STL
24h 15m
1 stop
Frontier Logo
11:28 am - 6:16 pm
STL
-
CVG
5h 48m
1 stop
$144Frontier
Fri, May 1 - Sun, May 3
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
$154Southern / Mokulele
Mon, Apr 13 - Fri, Apr 24
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
$164Southern / Mokulele
Thu, Apr 9 - Fri, Apr 10
Multiple Airlines Logo
2:35 pm - 6:36 pm
BNA
-
STL
4h 01m
1 stop
Multiple Airlines Logo
8:08 pm - 6:22 pm
STL
-
BNA
22h 14m
1 stop
$184Multiple Airlines
Sun, May 10 - Mon, May 11
Multiple Airlines Logo
11:06 am - 11:58 pm
BNA
-
STL
12h 52m
1 stop
Multiple Airlines Logo
9:50 am - 1:48 pm
STL
-
BNA
3h 58m
1 stop
$189Multiple Airlines
Fri, Apr 10 - Sat, Apr 11
Southwest Logo
5:55 pm - 7:10 pm
BNA
-
STL
1h 15mnonstop
Southwest Logo
8:45 pm - 9:55 pm
STL
-
BNA
1h 10mnonstop
$191Southwest
Sat, Apr 18 - Mon, Apr 20
Southwest Logo
5:55 am - 11:25 am
BNA
-
STL
5h 30m
1 stop
Southwest Logo
9:55 am - 11:05 am
STL
-
BNA
1h 10mnonstop
$201Southwest
Sat, Apr 18 - Mon, Apr 20
American Airlines Logo
6:54 pm - 10:59 pm
TYS
-
STL
5h 05m
1 stop
American Airlines Logo
5:51 am - 11:18 am
STL
-
TYS
4h 27m
1 stop
$218American Airlines
Thu, May 7 - Tue, May 12
American Airlines Logo
6:54 pm - 10:59 pm
TYS
-
STL
5h 05m
1 stop
American Airlines Logo
6:29 am - 3:26 pm
STL
-
TYS
7h 57m
1 stop
$237American Airlines
Thu, May 7 - Mon, May 11

Southwest flights from Kentucky to St. Louis

Our best Southwest deals on Kentucky to St. Louis flight tickets
Southwest
Apr 21
BNA6:25 amNashville Intl
1h 20m
STL7:45 amLambert-St Louis
Apr 23
STL5:05 amLambert-St Louis
5h 00m
1 stop
BNA10:05 amNashville Intl
$164
Southwest
Apr 22
BNA3:30 pmNashville Intl
5h 35m
1 stop
STL9:05 pmLambert-St Louis
Apr 23
STL5:30 pmLambert-St Louis
5h 30m
1 stop
BNA11:00 pmNashville Intl
$174
Southwest
Apr 21
BNA12:40 pmNashville Intl
5h 15m
2 stops
STL5:55 pmLambert-St Louis
Apr 23
STL5:30 pmLambert-St Louis
5h 30m
1 stop
BNA11:00 pmNashville Intl
$179

American Airlines flights from Kentucky to St. Louis

Our best American Airlines deals on Kentucky to St. Louis flight tickets
American Airlines
May 7
TYS6:54 pmKnoxville McGhee Tyson
5h 05m
1 stop
STL10:59 pmLambert-St Louis
May 12
STL5:51 amLambert-St Louis
4h 27m
1 stop
TYS11:18 amKnoxville McGhee Tyson
$218
American Airlines
May 7
TYS6:54 pmKnoxville McGhee Tyson
5h 05m
1 stop
STL10:59 pmLambert-St Louis
May 11
STL6:29 amLambert-St Louis
7h 57m
1 stop
TYS3:26 pmKnoxville McGhee Tyson
$237
American Airlines
Jun 1
CVG8:59 pmCincinnati Cinci./N. Kentucky
3h 55m
1 stop
STL11:54 pmLambert-St Louis
Jun 3
STL6:12 pmLambert-St Louis
4h 46m
1 stop
CVG11:58 pmCincinnati Cinci./N. Kentucky
$264

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 March 31, 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

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Tue 4/21

5:20 pm-11:19 pm

1 stop6h 59m

Lambert-St Louis

Fri 4/24

8:39 am-7:23 pm

1 stop9h 44m

$140

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Fri 5/1

8:17 pm-7:32 pm

1 stop24h 15m

Lambert-St Louis

Sun 5/3

11:28 am-6:16 pm

1 stop5h 48m

$144

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Mon 4/13

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Fri 4/24

9:50 am-1:48 pm

1 stop3h 58m

$154

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Thu 4/9

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Fri 4/10

9:50 am-1:48 pm

1 stop3h 58m

$164

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Sun 5/10

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Mon 5/11

8:08 pm-6:22 pm

1 stop22h 14m

$184

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Fri 4/10

11:06 am-11:58 pm

1 stop12h 52m

Lambert-St Louis

Sat 4/11

9:50 am-1:48 pm

1 stop3h 58m

$189
Quickest round-trip

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Sat 4/18

5:55 pm-7:10 pm

Nonstop1h 15m

Lambert-St Louis

Mon 4/20

8:45 pm-9:55 pm

Nonstop1h 10m

$191

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Sat 4/18

5:55 am-11:25 am

1 stop5h 30m

Lambert-St Louis

Mon 4/20

9:55 am-11:05 am

Nonstop1h 10m

$201

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 5/7

6:54 pm-10:59 pm

1 stop5h 05m

Lambert-St Louis

Tue 5/12

5:51 am-11:18 am

1 stop4h 27m

$218

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 5/7

6:54 pm-10:59 pm

1 stop5h 05m

Lambert-St Louis

Mon 5/11

6:29 am-3:26 pm

1 stop7h 57m

$237

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 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
7.1
11,543 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
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Clayton
Festus
Eureka
Edwardsville
Litchfield
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.

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