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Cheap flights from Louisville to St. Louis from $174

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 1/16. 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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Cheap round-trip flights

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American Airlines Logo
7:04 pm - 11:06 pmSDF-STL
5h 02m1 stop
American Airlines Logo
1:59 pm - 10:56 pmSTL-SDF
7h 57m1 stop
$265American Airlines
Find Deal
Fri, Dec 12 - Mon, Dec 15
Multiple Airlines Logo
11:31 am - 11:57 pmSDF-STL
13h 26m1 stop
Multiple Airlines Logo
2:47 pm - 10:31 amSTL-SDF
18h 44m1 stop
$279Multiple Airlines
Find Deal
Thu, Nov 27 - Thu, Dec 4
Multiple Airlines Logo
11:31 am - 11:57 pmSDF-STL
13h 26m1 stop
Multiple Airlines Logo
12:04 pm - 3:36 pmSTL-SDF
26h 32m2 stops
$284Multiple Airlines
Find Deal
Thu, Nov 27 - Thu, Dec 4
Delta Logo
6:35 am - 12:04 pmSDF-STL
6h 29m1 stop
Delta Logo
12:49 pm - 6:45 pmSTL-SDF
4h 56m1 stop
$303Delta
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Thu, Dec 11 - Mon, Dec 15
Southwest Logo
6:05 am - 11:20 amSDF-STL
6h 15m1 stop
Southwest Logo
6:05 am - 4:35 pmSTL-SDF
9h 30m2 stops
$308Southwest
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Thu, Dec 11 - Mon, Dec 15
Southwest Logo
5:30 am - 12:35 pmSDF-STL
8h 05m2 stops
Southwest Logo
6:05 am - 4:35 pmSTL-SDF
9h 30m2 stops
$313Southwest
Find Deal
Thu, Dec 11 - Mon, Dec 15
Southwest Logo
1:55 pm - 8:05 pmSDF-STL
7h 10m2 stops
Southwest Logo
10:15 am - 4:35 pmSTL-SDF
5h 20m1 stop
$335Southwest
Find Deal
Fri, Dec 12 - Mon, Dec 15
Southwest Logo
1:55 pm - 8:05 pmSDF-STL
7h 10m2 stops
Southwest Logo
6:05 am - 4:35 pmSTL-SDF
9h 30m2 stops
$340Southwest
Find Deal
Fri, Dec 12 - Mon, Dec 15
Delta Logo
6:00 am - 9:59 amSDF-STL
4h 59m1 stop
Delta Logo
5:17 pm - 12:06 amSTL-SDF
5h 49m1 stop
$376Delta
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Thu, Nov 27 - Mon, Dec 1
United Airlines Logo
7:00 am - 10:51 amSDF-STL
4h 51m1 stop
United Airlines Logo
12:55 pm - 8:42 pmSTL-SDF
6h 47m1 stop
$386United Airlines
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Tue, Nov 25 - Tue, Dec 2

Delta flights from Louisville to St. Louis

Our best Delta deals on Louisville to St. Louis flight tickets
Delta
Dec 11
SDF6:35 amLouisville Intl
6h 29m
1 stop
STL12:04 pmLambert-St Louis
Dec 15
STL12:49 pmLambert-St Louis
4h 56m
1 stop
SDF6:45 pmLouisville Intl
$303
Find similar
Delta
Nov 27
SDF6:00 amLouisville Intl
4h 59m
1 stop
STL9:59 amLambert-St Louis
Dec 1
STL5:17 pmLambert-St Louis
5h 49m
1 stop
SDF12:06 amLouisville Intl
$376
Find similar
Delta
Nov 18
SDF10:37 amLouisville Intl
6h 30m
1 stop
STL4:07 pmLambert-St Louis
Dec 2
STL11:40 amLambert-St Louis
4h 36m
1 stop
SDF5:16 pmLouisville Intl
$378
Find similar

Southwest flights from Louisville to St. Louis

Our best Southwest deals on Louisville to St. Louis flight tickets
Southwest
Dec 11
SDF6:05 amLouisville Intl
6h 15m
1 stop
STL11:20 amLambert-St Louis
Dec 15
STL6:05 amLambert-St Louis
9h 30m
2 stops
SDF4:35 pmLouisville Intl
$308
Find similar
Southwest
Dec 11
SDF5:30 amLouisville Intl
8h 05m
2 stops
STL12:35 pmLambert-St Louis
Dec 15
STL6:05 amLambert-St Louis
9h 30m
2 stops
SDF4:35 pmLouisville Intl
$313
Find similar
Southwest
Dec 12
SDF1:55 pmLouisville Intl
7h 10m
2 stops
STL8:05 pmLambert-St Louis
Dec 15
STL10:15 amLambert-St Louis
5h 20m
1 stop
SDF4:35 pmLouisville Intl
$335
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 October 31, 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

Fri 12/12

7:04 pm-11:06 pm

1 stop5h 02m

Lambert-St Louis

Mon 12/15

1:59 pm-10:56 pm

1 stop7h 57m

$265

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 11/27

11:31 am-11:57 pm

1 stop13h 26m

Lambert-St Louis

Thu 12/4

2:47 pm-10:31 am

1 stop18h 44m

$279

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 11/27

11:31 am-11:57 pm

1 stop13h 26m

Lambert-St Louis

Thu 12/4

12:04 pm-3:36 pm

2 stops26h 32m

$284

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 12/11

6:35 am-12:04 pm

1 stop6h 29m

Lambert-St Louis

Mon 12/15

12:49 pm-6:45 pm

1 stop4h 56m

$303

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 12/11

6:05 am-11:20 am

1 stop6h 15m

Lambert-St Louis

Mon 12/15

6:05 am-4:35 pm

2 stops9h 30m

$308

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 12/11

5:30 am-12:35 pm

2 stops8h 05m

Lambert-St Louis

Mon 12/15

6:05 am-4:35 pm

2 stops9h 30m

$313

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Fri 12/12

1:55 pm-8:05 pm

2 stops7h 10m

Lambert-St Louis

Mon 12/15

10:15 am-4:35 pm

1 stop5h 20m

$335

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Fri 12/12

1:55 pm-8:05 pm

2 stops7h 10m

Lambert-St Louis

Mon 12/15

6:05 am-4:35 pm

2 stops9h 30m

$340

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 11/27

6:00 am-9:59 am

1 stop4h 59m

Lambert-St Louis

Mon 12/1

5:17 pm-12:06 am

1 stop5h 49m

$376

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 11/25

7:00 am-10:51 am

1 stop4h 51m

Lambert-St Louis

Tue 12/2

12:55 pm-8:42 pm

1 stop6h 47m

$386

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 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

Direct flights

None
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. 3h 48m 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
7,998 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
Florissant
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
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.

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