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Cheap flights from St. Louis to Louisville from $131

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Louisville departing on 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Louisville

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:59 pm - 7:07 pm
STL
-
SDF
5h 08m
1 stop
United Airlines Logo
1:50 pm - 7:16 pm
SDF
-
STL
6h 26m
1 stop
$261United Airlines
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
6:45 am - 12:40 pm
STL
-
SDF
4h 55m
1 stop
Southwest Logo
1:30 pm - 6:50 pm
SDF
-
STL
6h 20m
1 stop
$261Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
5:45 am - 10:10 am
STL
-
SDF
3h 25m
1 stop
Southwest Logo
5:00 pm - 9:15 pm
SDF
-
STL
5h 15m
1 stop
$261Southwest
Sat, Sep 19 - Tue, Sep 22
Southwest Logo
6:45 am - 12:40 pm
STL
-
SDF
4h 55m
1 stop
Southwest Logo
10:00 am - 2:55 pm
SDF
-
STL
5h 55m
2 stops
$266Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
1:15 pm - 9:10 pm
STL
-
SDF
6h 55m
2 stops
Southwest Logo
1:30 pm - 6:50 pm
SDF
-
STL
6h 20m
1 stop
$266Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
5:45 am - 10:10 am
STL
-
SDF
3h 25m
1 stop
Southwest Logo
10:50 am - 5:55 pm
SDF
-
STL
8h 05m
2 stops
$266Southwest
Sat, Sep 19 - Tue, Sep 22
American Airlines Logo
5:00 am - 9:44 am
STL
-
SDF
3h 44m
1 stop
American Airlines Logo
2:47 pm - 8:44 pm
SDF
-
STL
6h 57m
1 stop
$271American Airlines
Wed, Sep 9 - Sat, Sep 12
Southwest Logo
1:40 pm - 9:25 pm
STL
-
SDF
6h 45m
2 stops
Southwest Logo
10:00 am - 2:55 pm
SDF
-
STL
5h 55m
2 stops
$271Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
8:35 am - 4:20 pm
STL
-
SDF
6h 45m
1 stop
Southwest Logo
8:20 am - 1:35 pm
SDF
-
STL
6h 15m
2 stops
$276Southwest
Wed, Sep 9 - Sat, Sep 12
Southwest Logo
7:15 am - 3:15 pm
STL
-
SDF
7h 00m
2 stops
Southwest Logo
8:20 am - 1:35 pm
SDF
-
STL
6h 15m
2 stops
$281Southwest
Wed, Sep 9 - Sat, Sep 12

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Southwest flights from St. Louis to Louisville

Our best Southwest deals on St. Louis to Louisville flight tickets
Southwest
Sep 5
STL6:45 amLambert-St Louis
4h 55m
1 stop
SDF12:40 pmLouisville Intl
Sep 6
SDF1:30 pmLouisville Intl
6h 20m
1 stop
STL6:50 pmLambert-St Louis
$261
Southwest
Sep 5
STL1:15 pmLambert-St Louis
6h 55m
2 stops
SDF9:10 pmLouisville Intl
Sep 6
SDF1:30 pmLouisville Intl
6h 20m
1 stop
STL6:50 pmLambert-St Louis
$266
Southwest
Sep 5
STL1:40 pmLambert-St Louis
6h 45m
2 stops
SDF9:25 pmLouisville Intl
Sep 6
SDF10:00 amLouisville Intl
5h 55m
2 stops
STL2:55 pmLambert-St Louis
$271

United Airlines flights from St. Louis to Louisville

Our best United Airlines deals on St. Louis to Louisville flight tickets
United Airlines
Oct 6
STL8:30 amLambert-St Louis
5h 09m
1 stop
SDF2:39 pmLouisville Intl
Oct 10
SDF6:16 pmLouisville Intl
4h 05m
1 stop
STL9:21 pmLambert-St Louis
$331
United Airlines
Oct 6
STL8:30 amLambert-St Louis
5h 09m
1 stop
SDF2:39 pmLouisville Intl
Oct 10
SDF6:16 pmLouisville Intl
4h 05m
1 stop
STL9:21 pmLambert-St Louis
$369
United Airlines
Aug 12
STL6:54 pmLambert-St Louis
4h 05m
1 stop
SDF11:59 pmLouisville Intl
Aug 16
SDF7:10 amLouisville Intl
4h 02m
1 stop
STL10:12 amLambert-St Louis
$579

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Louisville 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 2, 2026.
Use the filters below to find and compare flights from St. Louis to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 9/5

12:59 pm-7:07 pm

1 stop5h 08m

Louisville Intl

Sun 9/6

1:50 pm-7:16 pm

1 stop6h 26m

$261

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 9/5

6:45 am-12:40 pm

1 stop4h 55m

Louisville Intl

Sun 9/6

1:30 pm-6:50 pm

1 stop6h 20m

$261
Quickest round-trip

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 9/19

5:45 am-10:10 am

1 stop3h 25m

Louisville Intl

Tue 9/22

5:00 pm-9:15 pm

1 stop5h 15m

$261

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 9/5

6:45 am-12:40 pm

1 stop4h 55m

Louisville Intl

Sun 9/6

10:00 am-2:55 pm

2 stops5h 55m

$266

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 9/5

1:15 pm-9:10 pm

2 stops6h 55m

Louisville Intl

Sun 9/6

1:30 pm-6:50 pm

1 stop6h 20m

$266

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 9/19

5:45 am-10:10 am

1 stop3h 25m

Louisville Intl

Tue 9/22

10:50 am-5:55 pm

2 stops8h 05m

$266

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Wed 9/9

5:00 am-9:44 am

1 stop3h 44m

Louisville Intl

Sat 9/12

2:47 pm-8:44 pm

1 stop6h 57m

$271

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 9/5

1:40 pm-9:25 pm

2 stops6h 45m

Louisville Intl

Sun 9/6

10:00 am-2:55 pm

2 stops5h 55m

$271

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Wed 9/9

8:35 am-4:20 pm

1 stop6h 45m

Louisville Intl

Sat 9/12

8:20 am-1:35 pm

2 stops6h 15m

$276

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Wed 9/9

7:15 am-3:15 pm

2 stops7h 00m

Louisville Intl

Sat 9/12

8:20 am-1:35 pm

2 stops6h 15m

$281

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 Louisville from

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

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 Lambert-St Louis to Louisville Intl?

Southwest and Delta are the most popular carriers operating from Lambert-St Louis to Louisville Intl

When to book flights from St. Louis to Louisville

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

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

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

Fastest flight time

3h 50m

Direct flights

None
The fastest flight from St. Louis to Louisville takes 3h 50m
There are no direct flights from St. Louis to Louisville. There are no popular flight routes from St. Louis to Louisville.
Search flight deals

Frequently asked questions about flying from St. Louis to Louisville

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

    There are 241.7 mi between Lambert-St Louis and Louisville Intl. By plane, this route typically takes 3h 50m.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Louisville Intl Airport.

  • What documentation or ID do you need to fly to Louisville Intl Airport?

    The required travel and health documents for your Louisville Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Louisville Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
French Lick
Elizabethtown
Jeffersonville
West Baden Springs
Bardstown
New Albany
Shepherdsville
Elizabeth
Corydon
Charlestown
Brandenburg
Georgetown
Springfield

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Louisville from St. Louis.

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

Yes. momondo enables you to select and highlight flights to Louisville from St. Louis with this policy.

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

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

Yes. momondo can track prices for St. Louis to Louisville flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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