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$112+ Cheap flights from Louisville to San Antonio (SDF - SAT)

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAT
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Louisville Intl to San Antonio are usually found in August or June, booked 40 days in advance, depart on a Saturday or Wednesday and return on a Tuesday

Cheap flight deals from Louisville to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to San Antonio (SAT). 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 September 16, 2025.

Round-trip from

$248
(Kiwi.com)

One-way from

$112
(Cheapflightsfares)

Popular in

September

Cheapest in

August

Average price

$568
From Louisville Intl to San Antonio
Search Deals
One-way flight from Louisville Intl to San Antonio
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Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Louisville to San Antonio

Cheapest flights from Louisville to San Antonio
Explore the most affordable flight options available from Louisville to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/311:47 amSDF - SAT
1 stop7h 43mSpirit Airlines
Wed 11/54:16 pmSAT - SDF
1 stop16h 43mSpirit Airlines
Deal found 9/15$248
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:00 amSDF - SAT
1 stop17h 27mSpirit Airlines
Wed 11/124:16 pmSAT - SDF
1 stop16h 43mSpirit Airlines
Deal found 9/14$251
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2411:47 amSDF - SAT
1 stop7h 43mMultiple Airlines
Sun 10/267:35 pmSAT - SDF
1 stop12h 56mMultiple Airlines
Deal found 9/14$258
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:15 amSDF - SAT
1 stop9h 35mMultiple Airlines
Sun 10/267:35 pmSAT - SDF
1 stop12h 56mMultiple Airlines
Deal found 9/15$260
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:55 amSDF - SAT
1 stop29h 16mSpirit Airlines
Mon 11/174:16 pmSAT - SDF
1 stop16h 43mSpirit Airlines
Deal found 9/14$264
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:00 amSDF - SAT
1 stop17h 27mSpirit Airlines
Thu 12/44:16 pmSAT - SDF
1 stop16h 43mSpirit Airlines
Deal found 9/15$266
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:00 amSDF - SAT
1 stop17h 27mSpirit Airlines
Sun 11/94:16 pmSAT - SDF
1 stop16h 43mSpirit Airlines
Deal found 9/15$267
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/79:12 pmSDF - SAT
2 stops18h 59mMultiple Airlines
Wed 11/124:16 pmSAT - SDF
1 stop16h 43mMultiple Airlines
Deal found 9/14$289
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:00 amSDF - SAT
1 stop17h 27mSpirit Airlines
Thu 11/276:00 amSAT - SDF
1 stop16h 45mSpirit Airlines
Deal found 9/14$291
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:00 amSDF - SAT
1 stop17h 27mMultiple Airlines
Mon 11/175:35 pmSAT - SDF
2 stops39h 24mMultiple Airlines
Deal found 9/14$295
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 10/146:00 amSDF - SAT
1 stop4h 19mAmerican Airlines
Tue 10/282:32 pmSAT - SDF
1 stop4h 49mAmerican Airlines
Deal found 9/14$297

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to San Antonio 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 September 16, 2025.
Use the filters below to find and compare flights from Louisville to San Antonio that are best for you.

Fly from

Louisville

Fly to

San Antonio

Route

Depart

Return

Price

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Mon 11/3

11:47 am-6:30 pm

1 stop7h 43m

San Antonio

Wed 11/5

4:16 pm-9:59 am

1 stop16h 43m

$248

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Fri 10/24

11:47 am-6:30 pm

1 stop7h 43m

San Antonio

Sun 10/26

7:35 pm-9:31 am

1 stop12h 56m

$258

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Thu 10/23

7:15 am-3:50 pm

1 stop9h 35m

San Antonio

Sun 10/26

7:35 pm-9:31 am

1 stop12h 56m

$260

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Thu 11/6

6:00 am-10:27 pm

1 stop17h 27m

San Antonio

Sun 11/9

4:16 pm-9:59 am

1 stop16h 43m

$267

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Thu 11/13

6:00 am-10:27 pm

1 stop17h 27m

San Antonio

Mon 11/17

5:35 pm-9:59 am

2 stops39h 24m

$295

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Wed 11/19

10:39 am-4:02 pm

1 stop6h 23m

San Antonio

Mon 11/24

4:51 pm-12:06 am

1 stop6h 15m

$305

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Sat 11/15

6:00 am-12:10 pm

1 stop7h 10m

San Antonio

Tue 11/18

11:50 am-9:14 pm

1 stop8h 24m

$305

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Sat 11/1

7:00 am-3:29 pm

2 stops9h 29m

San Antonio

Tue 11/4

4:24 pm-9:57 pm

1 stop4h 33m

$310

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Thu 11/13

7:59 pm-12:33 am

1 stop5h 34m

San Antonio

Mon 11/17

1:05 pm-6:54 pm

1 stop4h 49m

$313

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Mon 10/6

11:47 am-6:30 pm

1 stop7h 43m

$112

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 16 results
1
2

Best time to book a flight from Louisville to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio 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.

Cheapflights Insights

Everything you need to know about your flight from Louisville to San Antonio

How far ahead should I book a flight from Louisville to San Antonio?

Use this chart to determine the optimal time to book a round-trip flight from Louisville to San Antonio. Price data was last updated on September 12, 2025.

The price you pay for your flight from Louisville to San Antonio may vary depending on when you book. For the best chance of a lower fare, look to book 40 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Louisville to San Antonio?

Currently, August is the cheapest month in which you can book a flight from Louisville to San Antonio (average of $295). Flying from Louisville to San Antonio in March is currently the most expensive (average of $376). 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 SAT?

Find hourly flight availability from Louisville to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

A simple way to save on the total cost of your ticket is to fly from Louisville to San Antonio in the evening. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Louisville to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from Louisville to San Antonio. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Louisville to San Antonio flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. 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 San Antonio. Reviews last updated September 16, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Louisville to San Antonio to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,957 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,924 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,019 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

  • How long is the flight from Louisville to San Antonio?

    Airlines like Spirit Airlines fly from Louisville to San Antonio in about 7h 43m. The time it takes to get you to your destination can typically vary by up to . There are 941 mi between Louisville and San Antonio.

  • What are the cheapest airlines flying from Louisville to San Antonio round-trip?

    According to our current data, Spirit Airlines ($156), Delta ($236), and American Airlines ($288) offers the cheapest pricing from Louisville to San Antonio. You may be able to fly from Louisville to San Antonio for 60% less than the average price by searching for these airlines.

  • Can I find deals for flights from Louisville to San Antonio that include hotel bookings?

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

  • How can I find direct flights from Louisville to San Antonio?

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

  • Can I find deals for business class flights from Louisville to San Antonio?

    Yes. Cheapflights offers flight deals from Louisville to San Antonio 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 San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Louisville to San Antonio (average of $295). Flying from Louisville to San Antonio in March is currently the most expensive (average of $376). 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 San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Louisville to San Antonio

Discover the top 5 airlines that operate flights from Louisville to San Antonio. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$156Average$242FlexibilityNo cancel feeOn-time65%
DeltaCheapest$236Average$360FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$393FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$296Average$439FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$302Average$385FlexibilityNo cancel feeOn-time63%

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