HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$165+ Cheap flights from Louisville to St. Louis (SDF - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — STL
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Louisville to St. Louis with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Louisville to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$183
(American Airlines)

One-way from

$165
(Mytrip)

Popular in

May

Cheapest in

August

Average price

$460
Provider with most accurate pricing for Louisville Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Lambert-St Louis flights.
Search Deals
From Louisville Intl to Lambert-St Louis
Search Deals
One-way flight from Louisville Intl to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Louisville to St. Louis

Cheapest flights from Louisville to St. Louis
Explore the most affordable flight options available from Louisville to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2025.

This American Airlines deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1011:50 amSDF - STL
1 stop11h 22mAmerican Airlines
Mon 4/1410:17 amSTL - SDF
1 stop8h 12mAmerican Airlines
Deal found 3/2$183
This Delta deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/186:00 amSDF - STL
1 stop4h 14mDelta
Tue 3/185:30 pmSTL - SDF
1 stop5h 27mDelta
Deal found 3/2$217
This Mytrip deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/105:45 amSDF - STL
1 stop12h 30mMultiple Airlines
Mon 4/149:50 amSTL - SDF
3 stops35h 27mMultiple Airlines
Deal found 3/2$312
This Southwest deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/46:50 amSDF - STL
2 stops7h 10mSouthwest
Fri 4/115:35 amSTL - SDF
1 stop4h 45mSouthwest
Deal found 3/2$316
This Mytrip deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/77:16 pmSDF - STL
1 stop14h 53mSpirit Airlines
Sun 3/95:38 pmSTL - SDF
1 stop23h 43mSpirit Airlines
Deal found 3/2$556

Find flights from Louisville to St. Louis within your budget

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, Cheapflights users made 2,558,603 searches. Data last updated March 3, 2025.

Fly from

Louisville

Fly to

St. Louis

Route

Depart

Return

Price

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 4/10

11:50 am-10:12 pm

1 stop11h 22m

Lambert-St Louis

Mon 4/14

10:17 am-7:29 pm

1 stop8h 12m

$183

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Tue 3/18

6:00 am-9:14 am

1 stop4h 14m

Lambert-St Louis

Tue 3/18

5:30 pm-11:57 pm

1 stop5h 27m

$217

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Thu 4/10

5:45 am-5:15 pm

1 stop12h 30m

Lambert-St Louis

Mon 4/14

9:50 am-10:17 pm

3 stops35h 27m

$312

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Fri 4/4

6:50 am-1:00 pm

2 stops7h 10m

Lambert-St Louis

Fri 4/11

5:35 am-11:20 am

1 stop4h 45m

$316

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Fri 3/7

7:16 pm-9:09 am

1 stop14h 53m

Lambert-St Louis

Sun 3/9

5:38 pm-6:21 pm

1 stop23h 43m

$556

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Wed 3/12

7:16 pm-4:42 pm

1 stop22h 26m

$165

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Wed 3/12

3:41 pm-10:18 pm

2 stops7h 37m

$232

LouisvilleSt. Louis

SDF - STL

SDFSTL

Louisville Intl

Wed 3/12

7:16 pm-4:45 pm

3 stops22h 29m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Compare providers for flights from Louisville to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to St. Louis in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Louisville-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Louisville to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Louisville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Louisville to St. Louis

Get recent, data-driven insights about flights from Louisville to St. Louis including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Louisville to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Louisville to St. Louis (average of $311). Flying from Louisville to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SDF to STL?

Find hourly flight availability from Louisville to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 3, 2025.

One of the essential ways to save on airfare from Louisville to St. Louis is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 12% on airfare.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated March 3, 2025.
Southwest
8.1
Very good
4,333 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest
8.1
Very good
4,333 reviews
Southwest
8.1
Very good
4,333 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta
8.0
Very good
8,068 reviews
Southwest
8.1
Very good
4,333 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,333 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Spirit Airlines
6.3
Okay
7,940 reviews
Southwest
8.1
Very good
4,333 reviews

Entertainment

7.6

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

Find useful and relevant information for your journey from Louisville to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Louisville to St. Louis round-trip?

    According to our current data, American Airlines ($183), Delta ($217), and Southwest ($316) offers the cheapest pricing from Louisville to St. Louis. American Airlines is 48% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Louisville to St. Louis that include hotel bookings?

    Yes. In addition to deals on Louisville to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to St. Louis.

  • Can I find deals for business class flights from Louisville to St. Louis?

    Yes. Cheapflights offers flight deals from Louisville to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Louisville to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Louisville to St. Louis (average of $311). Flying from Louisville to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Louisville to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Nashville to St. Louis flights
Nashville to Kansas City flights
Cincinnati to Kansas City flights
Louisville to Kansas City flights
Knoxville to Kansas City flights
Knoxville to St. Louis flights
Lexington to St. Louis flights
Nashville to Springfield flights
Lexington to Kansas City flights
Cincinnati to St. Louis flights
Blountville to St. Louis flights
Cincinnati to Springfield flights
Knoxville to Springfield flights
Blountville to Kansas City flights
Louisville to Springfield flights
Blountville to Springfield flights
Huntington to Kansas City flights
Lexington to Springfield flights
Nashville to Quincy flights
Huntington to Springfield flights
Owensboro to St. Louis flights
Knoxville to Joplin flights

Top 2 airlines flying from Louisville to St. Louis

Discover the top 2 airlines that operate flights from Louisville to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$192Average$364FlexibilityNo cancel feeOn-time71%
DeltaCheapest$226Average$354FlexibilityNo cancel feeOn-timeN/A
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.