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Cheap flights from Louisville to St. Louis from $109

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 1/7. 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
0 bags

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Find the cheapest flights from Louisville to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:36 pm - 11:33 pm
SDF
-
STL
32h 57m2 stops
Multiple Airlines Logo
5:42 pm - 1:00 pm
STL
-
SDF
18h 18m1 stop
$181Multiple Airlines
Tue, Jan 27 - Tue, Feb 3
Multiple Airlines Logo
3:36 pm - 6:51 am
SDF
-
STL
16h 15m2 stops
Multiple Airlines Logo
5:42 pm - 1:00 pm
STL
-
SDF
18h 18m1 stop
$190Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
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
Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
11:14 am - 9:15 pm
SDF
-
STL
11h 01m2 stops
American Airlines Logo
11:05 am - 10:05 pm
STL
-
SDF
10h 00m2 stops
$267American Airlines
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
1:55 pm - 10:33 pm
SDF
-
STL
9h 38m1 stop
Multiple Airlines Logo
5:11 pm - 1:00 pm
STL
-
SDF
18h 49m1 stop
$274Multiple Airlines
Fri, Jan 9 - Sun, Jan 11
Delta Logo
6:40 am - 11:12 am
SDF
-
STL
5h 32m1 stop
Delta Logo
6:00 am - 11:37 am
STL
-
SDF
4h 37m1 stop
$296Delta
Thu, Jan 1 - Thu, Jan 8
American Airlines Logo
5:00 am - 1:36 pm
SDF
-
STL
9h 36m2 stops
American Airlines Logo
6:44 pm - 11:19 pm
STL
-
SDF
3h 35m1 stop
$301American Airlines
Thu, Jan 1 - Thu, Jan 8
American Airlines Logo
5:00 am - 1:36 pm
SDF
-
STL
9h 36m2 stops
American Airlines Logo
11:05 am - 10:12 pm
STL
-
SDF
10h 07m2 stops
$306American Airlines
Thu, Jan 1 - Thu, Jan 8
United Airlines Logo
6:12 pm - 10:58 pm
SDF
-
STL
5h 46m1 stop
United Airlines Logo
9:57 am - 5:37 pm
STL
-
SDF
6h 40m1 stop
$317United Airlines
Tue, Jan 20 - Wed, Jan 21
Delta Logo
7:45 am - 12:55 pm
SDF
-
STL
6h 10m1 stop
Delta Logo
5:29 pm - 10:51 pm
STL
-
SDF
4h 22m1 stop
$337Delta
Wed, Mar 25 - Fri, Mar 27

United Airlines flights from Louisville to St. Louis

Our best United Airlines deals on Louisville to St. Louis flight tickets
United Airlines
Jan 13
SDF8:29 amLouisville Intl
7h 01m
1 stop
STL2:30 pmLambert-St Louis
Jan 20
STL6:30 amLambert-St Louis
5h 54m
1 stop
SDF1:24 pmLouisville Intl
$257
Find similar
United Airlines
Jan 20
SDF6:12 pmLouisville Intl
5h 46m
1 stop
STL10:58 pmLambert-St Louis
Jan 21
STL9:57 amLambert-St Louis
6h 40m
1 stop
SDF5:37 pmLouisville Intl
$317
Find similar
United Airlines
Feb 15
SDF9:00 amLouisville Intl
6h 29m
1 stop
STL2:29 pmLambert-St Louis
Feb 19
STL7:41 amLambert-St Louis
4h 42m
1 stop
SDF1:23 pmLouisville Intl
$344
Find similar

American Airlines flights from Louisville to St. Louis

Our best American Airlines deals on Louisville to St. Louis flight tickets
American Airlines
Jan 13
SDF11:14 amLouisville Intl
11h 01m
2 stops
STL9:15 pmLambert-St Louis
Jan 20
STL11:05 amLambert-St Louis
10h 00m
2 stops
SDF10:05 pmLouisville Intl
$267
Find similar
American Airlines
Jan 1
SDF5:00 amLouisville Intl
9h 36m
2 stops
STL1:36 pmLambert-St Louis
Jan 8
STL6:44 pmLambert-St Louis
3h 35m
1 stop
SDF11:19 pmLouisville Intl
$301
Find similar
American Airlines
Jan 1
SDF5:00 amLouisville Intl
9h 36m
2 stops
STL1:36 pmLambert-St Louis
Jan 8
STL11:05 amLambert-St Louis
10h 07m
2 stops
SDF10:12 pmLouisville Intl
$306
Find similar

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 December 15, 2025.
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

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 1/27

3:36 pm-11:33 pm

2 stops32h 57m

Lambert-St Louis

Tue 2/3

5:42 pm-1:00 pm

1 stop18h 18m

$181

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 1/13

3:36 pm-6:51 am

2 stops16h 15m

Lambert-St Louis

Tue 1/20

5:42 pm-1:00 pm

1 stop18h 18m

$190

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 1/13

8:29 am-2:30 pm

1 stop7h 01m

Lambert-St Louis

Tue 1/20

6:30 am-1:24 pm

1 stop5h 54m

$257

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 1/13

11:14 am-9:15 pm

2 stops11h 01m

Lambert-St Louis

Tue 1/20

11:05 am-10:05 pm

2 stops10h 00m

$267

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Fri 1/9

1:55 pm-10:33 pm

1 stop9h 38m

Lambert-St Louis

Sun 1/11

5:11 pm-1:00 pm

1 stop18h 49m

$274

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 1/1

6:40 am-11:12 am

1 stop5h 32m

Lambert-St Louis

Thu 1/8

6:00 am-11:37 am

1 stop4h 37m

$296

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 1/1

5:00 am-1:36 pm

2 stops9h 36m

Lambert-St Louis

Thu 1/8

6:44 pm-11:19 pm

1 stop3h 35m

$301

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 1/1

5:00 am-1:36 pm

2 stops9h 36m

Lambert-St Louis

Thu 1/8

11:05 am-10:12 pm

2 stops10h 07m

$306

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 1/20

6:12 pm-10:58 pm

1 stop5h 46m

Lambert-St Louis

Wed 1/21

9:57 am-5:37 pm

1 stop6h 40m

$317

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Wed 3/25

7:45 am-12:55 pm

1 stop6h 10m

Lambert-St Louis

Fri 3/27

5:29 pm-10:51 pm

1 stop4h 22m

$337

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 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 typical price of a round-trip flight between Louisville and St. Louis?

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 Louisville 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 Louisville Intl to Lambert-St Louis flight route?

Fly from Louisville Intl to Lambert-St Louis for the best Louisville Intl - Lambert-St Louis flight prices

What cabin class options are available on Louisville Intl to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on Louisville Intl 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.

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

4h 22m

Direct flights

None
The fastest flight from Louisville to St. Louis takes 4h 22m
There are no direct flights from Louisville to St. Louis. There are no popular flight routes from Louisville to St. Louis.
Search flight deals

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

    Lambert-St Louis is 241.7 mi away from Louisville Intl. 4h 22m 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 many operators does momondo search for flights from Louisville Intl Airport to Lambert-St Louis Airport?

  • 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.

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

Best airlines flying from Louisville to St. Louis

Compare and see reviews for airlines that fly from Louisville to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $204Free CancellationRating
7.9
8,007 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 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.

An easier way to manage your St. Louis trip

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