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Cheap flights from St. Louis to Louisville from $129

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 12/17. 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 St. Louis to Louisville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:10 am - 2:42 pm
STL
-
SDF
6h 32m1 stop
Delta Logo
6:23 am - 10:43 am
SDF
-
STL
5h 20m1 stop
$259Delta
Sat, Jan 17 - Sun, Jan 18
Southwest Logo
1:45 pm - 10:05 pm
STL
-
SDF
7h 20m2 stops
Southwest Logo
6:45 am - 11:15 am
SDF
-
STL
5h 30m1 stop
$295Southwest
Sat, Jan 17 - Sun, Jan 18
Southwest Logo
1:45 pm - 10:05 pm
STL
-
SDF
7h 20m2 stops
Southwest Logo
6:45 am - 12:45 pm
SDF
-
STL
7h 00m2 stops
$339Southwest
Sat, Jan 17 - Sun, Jan 18
United Airlines Logo
4:49 pm - 10:30 pm
STL
-
SDF
4h 41m1 stop
United Airlines Logo
8:29 am - 12:29 pm
SDF
-
STL
5h 00m1 stop
$356United Airlines
Sun, Jan 18 - Thu, Jan 22
Delta Logo
6:47 pm - 11:58 pm
STL
-
SDF
4h 11m1 stop
Delta Logo
5:33 am - 9:06 am
SDF
-
STL
4h 33m1 stop
$357Delta
Fri, Feb 20 - Sun, Feb 22
American Airlines Logo
6:00 am - 6:57 pm
STL
-
SDF
11h 57m2 stops
American Airlines Logo
5:00 am - 8:32 am
SDF
-
STL
4h 32m1 stop
$362American Airlines
Fri, Feb 20 - Sun, Feb 22
Delta Logo
5:00 pm - 11:55 pm
STL
-
SDF
5h 55m1 stop
Delta Logo
4:56 pm - 11:25 pm
SDF
-
STL
7h 29m1 stop
$363Delta
Mon, Jan 5 - Mon, Jan 12
Southwest Logo
3:10 pm - 12:45 am
STL
-
SDF
8h 35m2 stops
Southwest Logo
1:40 pm - 9:25 pm
SDF
-
STL
8h 45m2 stops
$367Southwest
Fri, Feb 20 - Sun, Feb 22
American Airlines Logo
6:41 am - 6:21 pm
STL
-
SDF
10h 40m2 stops
American Airlines Logo
1:15 pm - 6:34 pm
SDF
-
STL
6h 19m1 stop
$368American Airlines
Mon, Jan 5 - Mon, Jan 12
United Airlines Logo
11:05 am - 5:28 pm
STL
-
SDF
5h 23m1 stop
United Airlines Logo
8:29 am - 2:30 pm
SDF
-
STL
7h 01m1 stop
$376United Airlines
Fri, Jan 2 - Fri, Jan 9

United Airlines flights from St. Louis to Louisville

Our best United Airlines deals on St. Louis to Louisville flight tickets
United Airlines
Jan 18
STL4:49 pmLambert-St Louis
4h 41m
1 stop
SDF10:30 pmLouisville Intl
Jan 22
SDF8:29 amLouisville Intl
5h 00m
1 stop
STL12:29 pmLambert-St Louis
$356
Find similar
United Airlines
Jan 2
STL11:05 amLambert-St Louis
5h 23m
1 stop
SDF5:28 pmLouisville Intl
Jan 9
SDF8:29 amLouisville Intl
7h 01m
1 stop
STL2:30 pmLambert-St Louis
$376
Find similar
United Airlines
Dec 24
STL6:30 amLambert-St Louis
5h 43m
1 stop
SDF1:13 pmLouisville Intl
Dec 28
SDF6:11 pmLouisville Intl
5h 32m
1 stop
STL10:43 pmLambert-St Louis
$410
Find similar

Delta flights from St. Louis to Louisville

Our best Delta deals on St. Louis to Louisville flight tickets
Delta
Jan 17
STL7:10 amLambert-St Louis
6h 32m
1 stop
SDF2:42 pmLouisville Intl
Jan 18
SDF6:23 amLouisville Intl
5h 20m
1 stop
STL10:43 amLambert-St Louis
$259
Find similar
Delta
Feb 20
STL6:47 pmLambert-St Louis
4h 11m
1 stop
SDF11:58 pmLouisville Intl
Feb 22
SDF5:33 amLouisville Intl
4h 33m
1 stop
STL9:06 amLambert-St Louis
$357
Find similar
Delta
Jan 5
STL5:00 pmLambert-St Louis
5h 55m
1 stop
SDF11:55 pmLouisville Intl
Jan 12
SDF4:56 pmLouisville Intl
7h 29m
1 stop
STL11:25 pmLambert-St Louis
$363
Find similar

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 December 10, 2025.
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

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 1/17

7:10 am-2:42 pm

1 stop6h 32m

Louisville Intl

Sun 1/18

6:23 am-10:43 am

1 stop5h 20m

$259

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 1/17

1:45 pm-10:05 pm

2 stops7h 20m

Louisville Intl

Sun 1/18

6:45 am-11:15 am

1 stop5h 30m

$295

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sat 1/17

1:45 pm-10:05 pm

2 stops7h 20m

Louisville Intl

Sun 1/18

6:45 am-12:45 pm

2 stops7h 00m

$339

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Sun 1/18

4:49 pm-10:30 pm

1 stop4h 41m

Louisville Intl

Thu 1/22

8:29 am-12:29 pm

1 stop5h 00m

$356

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Fri 2/20

6:47 pm-11:58 pm

1 stop4h 11m

Louisville Intl

Sun 2/22

5:33 am-9:06 am

1 stop4h 33m

$357

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Fri 2/20

6:00 am-6:57 pm

2 stops11h 57m

Louisville Intl

Sun 2/22

5:00 am-8:32 am

1 stop4h 32m

$362

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Mon 1/5

5:00 pm-11:55 pm

1 stop5h 55m

Louisville Intl

Mon 1/12

4:56 pm-11:25 pm

1 stop7h 29m

$363

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Fri 2/20

3:10 pm-12:45 am

2 stops8h 35m

Louisville Intl

Sun 2/22

1:40 pm-9:25 pm

2 stops8h 45m

$367

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Mon 1/5

6:41 am-6:21 pm

2 stops10h 40m

Louisville Intl

Mon 1/12

1:15 pm-6:34 pm

1 stop6h 19m

$368

St. LouisLouisville

STL - SDF

STLSDF

Lambert-St Louis

Fri 1/2

11:05 am-5:28 pm

1 stop5h 23m

Louisville Intl

Fri 1/9

8:29 am-2:30 pm

1 stop7h 01m

$376

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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 day to depart on your flight to Louisville?

On average, the least expensive day to fly to Louisville from St. Louis is on a Thursday. momondo users have found tickets for Thursday departures for as low as $346. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from St. Louis to Louisville on a Monday will generally be more expensive and average around $391. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Louisville?

Our data shows that the cheapest St. Louis to Louisville flights are usually those with departure times in the morning. Our users have found flights to Louisville in the morning for as low as $350. At noon is when there is more demand to fly to Louisville, so prices are often more expensive at around $438 per ticket.

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 20m

Direct flights

None
The fastest flight from St. Louis to Louisville takes 3h 20m
There are no direct flights from St. Louis to Louisville. There are no popular flight routes from St. Louis to Louisville.
Search flight deals

  • 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 20m.

  • 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 many operators does momondo search for flights from Lambert-St Louis Airport to Louisville Intl Airport?

  • 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.

  • What is the most popular airline from St. Louis to Louisville?

Best airlines flying from St. Louis to Louisville

Compare and see reviews for airlines that fly from St. Louis to Louisville with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $216Free CancellationRating
7.9
4,253 reviews
Search Southwest flights

Traveling to a place near Louisville?

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

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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