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Cheap flights from Louisville to St. Louis from $136

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to St. Louis departing on 9/9. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Louisville to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:00 am - 11:57 amSDF  Louisville Intl-STL Lambert-St Louis
3h 57m1 stop Chicago O'Hare Intl
United Airlines Logo
12:59 pm - 8:07 pmSTL  Lambert-St Louis-SDF Louisville Intl
6h 08m1 stop Chicago O'Hare Intl
$266United Airlines
Wed, Sep 9 - Fri, Sep 11
Southwest Logo
5:00 pm - 9:15 pmSDF  Louisville Intl-STL Lambert-St Louis
5h 15m1 stop Baltimore/Washington
Southwest Logo
2:20 pm - 8:30 pmSTL  Lambert-St Louis-SDF Louisville Intl
5h 10m1 stop Chicago Midway
$266Southwest
Wed, Sep 9 - Fri, Sep 11
American Airlines Logo
7:11 am - 10:13 amSDF  Louisville Intl-STL Lambert-St Louis
4h 02m1 stop Chicago O'Hare Intl
American Airlines Logo
5:00 am - 9:43 amSTL  Lambert-St Louis-SDF Louisville Intl
3h 43m1 stop Chicago O'Hare Intl
$271American Airlines
Sat, Oct 3 - Sun, Oct 4
Southwest Logo
7:05 am - 2:50 pmSDF  Louisville Intl-STL Lambert-St Louis
8h 45m2 stops Nashville Intl Baltimore/Washington
Southwest Logo
4:15 pm - 10:40 pmSTL  Lambert-St Louis-SDF Louisville Intl
5h 25m1 stop Baltimore/Washington
$271Southwest
Wed, Sep 9 - Fri, Sep 11
Southwest Logo
5:30 am - 11:20 amSDF  Louisville Intl-STL Lambert-St Louis
6h 50m2 stops Baltimore/Washington Chicago Midway
Southwest Logo
6:05 am - 3:30 pmSTL  Lambert-St Louis-SDF Louisville Intl
8h 25m2 stops Chicago Midway Baltimore/Washington
$276Southwest
Wed, Sep 9 - Fri, Sep 11
Southwest Logo
5:00 pm - 9:15 pmSDF  Louisville Intl-STL Lambert-St Louis
5h 15m1 stop Baltimore/Washington
Southwest Logo
2:20 pm - 8:30 pmSTL  Lambert-St Louis-SDF Louisville Intl
5h 10m1 stop Chicago Midway
$280Southwest
Wed, Sep 9 - Fri, Sep 11
Southwest Logo
7:05 am - 2:50 pmSDF  Louisville Intl-STL Lambert-St Louis
8h 45m2 stops Nashville Intl Baltimore/Washington
Southwest Logo
4:15 pm - 10:40 pmSTL  Lambert-St Louis-SDF Louisville Intl
5h 25m1 stop Baltimore/Washington
$285Southwest
Wed, Sep 9 - Fri, Sep 11
Delta Logo
7:05 am - 11:46 amSDF  Louisville Intl-STL Lambert-St Louis
5h 41m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:05 am - 12:20 pmSTL  Lambert-St Louis-SDF Louisville Intl
4h 15m1 stop Atlanta Hartsfield-Jackson
$299Delta
Mon, Sep 7 - Tue, Sep 8
Delta Logo
10:34 am - 1:14 pmSDF  Louisville Intl-STL Lambert-St Louis
3h 40m1 stop Detroit Metropolitan Wayne County
Delta Logo
3:39 pm - 9:33 pmSTL  Lambert-St Louis-SDF Louisville Intl
4h 54m1 stop Atlanta Hartsfield-Jackson
$299Delta
Tue, Aug 25 - Wed, Aug 26
United Airlines Logo
9:00 am - 2:28 pmSDF  Louisville Intl-STL Lambert-St Louis
6h 28m1 stop Chicago O'Hare Intl
United Airlines Logo
12:59 pm - 8:36 pmSTL  Lambert-St Louis-SDF Louisville Intl
6h 37m1 stop Chicago O'Hare Intl
$299United Airlines
Tue, Sep 1 - Mon, Sep 7

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Delta flights from Louisville to St. Louis

Our best Delta deals on Louisville to St. Louis flight tickets
Delta
Aug 21
SDF5:50 pmLouisville Intl
7h 08m
1 stop
STL11:58 pmLambert-St Louis
Aug 28
STL6:30 amLambert-St Louis
6h 21m
1 stop
SDF1:51 pmLouisville Intl
$441
Delta
Aug 11
SDF10:34 amLouisville Intl
3h 40m
1 stop
STL1:14 pmLambert-St Louis
Aug 16
STL7:00 amLambert-St Louis
4h 21m
1 stop
SDF12:21 pmLouisville Intl
$748
Delta
Aug 9
SDF10:34 amLouisville Intl
3h 40m
1 stop
STL1:14 pmLambert-St Louis
Aug 13
STL7:00 amLambert-St Louis
4h 21m
1 stop
SDF12:21 pmLouisville Intl
$801

American Airlines flights from Louisville to St. Louis

Our best American Airlines deals on Louisville to St. Louis flight tickets
American Airlines
Oct 3
SDF2:53 pmLouisville Intl
10h 34m
2 stops
STL12:27 amLambert-St Louis
Oct 4
STL5:00 amLambert-St Louis
3h 43m
1 stop
SDF9:43 amLouisville Intl
$321
American Airlines
Sep 15
SDF4:35 pmLouisville Intl
5h 09m
1 stop
STL8:44 pmLambert-St Louis
Sep 18
STL5:00 amLambert-St Louis
3h 43m
1 stop
SDF9:43 amLouisville Intl
$326
American Airlines
Sep 7
SDF6:30 pmLouisville Intl
6h 44m
1 stop
STL12:14 amLambert-St Louis
Sep 8
STL1:25 pmLambert-St Louis
8h 46m
2 stops
SDF11:11 pmLouisville Intl
$335

momondo Fare Finder

 
Customize your flight search to find flights from Louisville 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 August 8, 2026.
Use the filters below to find and compare flights from Louisville to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSt. Louis

SDF Louisville Intl - STL Lambert-St Louis

SDFSTL

Louisville Intl

Wed 9/9

9:00 am-11:57 am

1 stop3h 57m

Lambert-St Louis

Fri 9/11

12:59 pm-8:07 pm

1 stop6h 08m

$266

LouisvilleSt. Louis

SDF Louisville Intl - STL Lambert-St Louis

SDFSTL

Louisville Intl

Wed 9/9

5:00 pm-9:15 pm

1 stop5h 15m

Lambert-St Louis

Fri 9/11

2:20 pm-8:30 pm

1 stop5h 10m

$266
Quickest round-trip

LouisvilleSt. Louis

SDF Louisville Intl - STL Lambert-St Louis

SDFSTL

Louisville Intl

Sat 10/3

7:11 am-10:13 am

1 stop4h 02m

Lambert-St Louis

Sun 10/4

5:00 am-9:43 am

1 stop3h 43m

$271

LouisvilleSt. Louis

SDF Louisville Intl - STL Lambert-St Louis

SDFSTL

Louisville Intl

Wed 9/9

7:05 am-2:50 pm

2 stops8h 45m

Lambert-St Louis

Fri 9/11

4:15 pm-10:40 pm

1 stop5h 25m

$271

LouisvilleSt. Louis

SDF Louisville Intl - STL Lambert-St Louis

SDFSTL

Louisville Intl

Wed 9/9

5:30 am-11:20 am

2 stops6h 50m

Lambert-St Louis

Fri 9/11

6:05 am-3:30 pm

2 stops8h 25m

$276

LouisvilleSt. Louis

SDF Louisville Intl - STL Lambert-St Louis

SDFSTL

Louisville Intl

Wed 9/9

5:00 pm-9:15 pm

1 stop5h 15m

Lambert-St Louis

Fri 9/11

2:20 pm-8:30 pm

1 stop5h 10m

$280

LouisvilleSt. Louis

SDF Louisville Intl - STL Lambert-St Louis

SDFSTL

Louisville Intl

Wed 9/9

7:05 am-2:50 pm

2 stops8h 45m

Lambert-St Louis

Fri 9/11

4:15 pm-10:40 pm

1 stop5h 25m

$285

LouisvilleSt. Louis

SDF Louisville Intl - STL Lambert-St Louis

SDFSTL

Louisville Intl

Mon 9/7

7:05 am-11:46 am

1 stop5h 41m

Lambert-St Louis

Tue 9/8

7:05 am-12:20 pm

1 stop4h 15m

$299

LouisvilleSt. Louis

SDF Louisville Intl - STL Lambert-St Louis

SDFSTL

Louisville Intl

Tue 8/25

10:34 am-1:14 pm

1 stop3h 40m

Lambert-St Louis

Wed 8/26

3:39 pm-9:33 pm

1 stop4h 54m

$299

LouisvilleSt. Louis

SDF Louisville Intl - STL Lambert-St Louis

SDFSTL

Louisville Intl

Tue 9/1

9:00 am-2:28 pm

1 stop6h 28m

Lambert-St Louis

Mon 9/7

12:59 pm-8:36 pm

1 stop6h 37m

$299

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Louisville 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 airline that flies from Louisville Intl to Lambert-St Louis?

Delta is the most popular carrier operating from Louisville Intl to Lambert-St Louis

What airlines fly to St. Louis?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Louisville according to our data. American Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When to book flights from Louisville to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Louisville to St. Louis (SDF to STL) flight deals and tips

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

Fastest flight time

3h 55m

Direct flights

None
The fastest flight from Louisville to St. Louis takes 3h 55m
There are no direct flights from Louisville to St. Louis. There are no popular flight routes from Louisville to St. Louis.
Search flight deals

Frequently asked questions about flying from Louisville to St. Louis

  • How far is Louisville Intl to Lambert-St Louis by plane?

    Lambert-St Louis is 241.7 mi away from Louisville Intl. 3h 55m is a normal flight duration for this route.

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

    Prices for flights from Louisville Intl Airport to Lambert-St Louis Airport were last updated today.

  • How old do you have to be to fly from Louisville Intl Airport 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 Louisville Intl Airport to Lambert-St Louis Airport.

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

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport 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 Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near St. Louis?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Louisville to St. Louis. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to St. Louis from Louisville which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Louisville 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 Louisville to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Louisville and alert you when they change.

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