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$116+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAT
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheapflights Tip: The best prices from Louisville Intl to San Antonio are usually found in August or January, booked 49 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 August 18, 2025.

Round-trip from

$237
(Kiwi.com)

One-way from

$116
(Cheapflightsfares)

Popular in

November

Cheapest in

August

Average price

$316
From Louisville Intl to San Antonio
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One-way flight from Louisville Intl to San Antonio
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Highest demand for flights based on searches. 8% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/16. 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 9/254:20 pmSDF - SAT
1 stop21h 56mMultiple Airlines
Sun 9/289:33 pmSAT - SDF
1 stop16h 47mMultiple Airlines
Deal found 8/16$237
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:49 amSDF - SAT
1 stop9h 06mSpirit Airlines
Sun 11/27:19 pmSAT - SDF
1 stop21h 44mSpirit Airlines
Deal found 8/18$239
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:00 amSDF - SAT
1 stop17h 27mSpirit Airlines
Mon 11/176:00 amSAT - SDF
1 stop16h 45mSpirit Airlines
Deal found 8/18$245
This FlightHub deal was found by Cheapflights users on 8/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:08 pmSDF - SAT
1 stop18h 52mSpirit Airlines
Thu 10/235:00 pmSAT - SDF
1 stop28h 47mSpirit Airlines
Deal found 8/15$248
This Mytrip deal was found by Cheapflights users on 8/18. 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 9/129:47 amSDF - SAT
1 stop9h 25mMultiple Airlines
Sun 9/147:17 pmSAT - SDF
1 stop14h 10mMultiple Airlines
Deal found 8/18$249
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 9/1010:14 amSDF - SAT
2 stops32h 58mMultiple Airlines
Sun 9/149:33 pmSAT - SDF
1 stop16h 47mMultiple Airlines
Deal found 8/16$255
This Mytrip deal was found by Cheapflights users on 8/17. 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 11/66:00 amSDF - SAT
3 stops33h 07mSpirit Airlines
Sun 11/96:00 amSAT - SDF
1 stop16h 45mSpirit Airlines
Deal found 8/17$272
This Delta deal was found by Cheapflights users on 8/16. 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 10/146:05 pmSDF - SAT
1 stop5h 37mDelta
Tue 10/285:14 amSAT - SDF
1 stop5h 35mDelta
Deal found 8/16$277
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 10/237:49 amSDF - SAT
1 stop9h 06mMultiple Airlines
Fri 10/247:10 pmSAT - SDF
2 stops21h 53mMultiple Airlines
Deal found 8/17$278
This United Airlines deal was found by Cheapflights users on 8/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/810:55 amSDF - SAT
1 stop6h 03mUnited Airlines
Sat 10/117:00 amSAT - SDF
1 stop6h 51mUnited Airlines
Deal found 8/18$284

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 August 18, 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

Thu 9/25

4:20 pm-1:16 pm

1 stop21h 56m

San Antonio

Sun 9/28

9:33 pm-3:20 pm

1 stop16h 47m

$237

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Thu 10/30

7:49 am-3:55 pm

1 stop9h 06m

San Antonio

Sun 11/2

7:19 pm-6:03 pm

1 stop21h 44m

$239

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Wed 9/10

10:14 am-1:49 pm

1 stop28h 35m

San Antonio

Sun 9/14

2:54 pm-9:19 am

1 stop17h 25m

$245

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Thu 11/13

6:00 am-10:27 pm

1 stop17h 27m

San Antonio

Mon 11/17

6:00 am-11:45 pm

1 stop16h 45m

$245

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Sun 9/28

8:23 am-6:12 pm

1 stop10h 49m

San Antonio

Thu 10/2

9:47 pm-3:20 pm

1 stop16h 33m

$245

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Thu 11/6

6:00 am-10:27 pm

1 stop17h 27m

San Antonio

Sun 11/9

6:00 am-11:45 pm

1 stop16h 45m

$248

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Mon 10/20

8:08 pm-2:00 pm

1 stop18h 52m

San Antonio

Thu 10/23

5:00 pm-10:47 pm

1 stop28h 47m

$248

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Fri 9/12

9:47 am-6:12 pm

1 stop9h 25m

San Antonio

Sun 9/14

7:17 pm-10:27 am

1 stop14h 10m

$249

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Wed 9/10

10:14 am-6:12 pm

2 stops32h 58m

San Antonio

Sun 9/14

9:33 pm-3:20 pm

1 stop16h 47m

$255

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Fri 10/24

7:49 am-3:55 pm

1 stop9h 06m

San Antonio

Fri 10/24

7:19 pm-6:03 pm

1 stop21h 44m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 20 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 August 8, 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 49 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 August 18, 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 August 18, 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
4,246 reviews

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,925 reviews
Southwest
8.0
Very good
4,246 reviews

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,038 reviews
Southwest
8.0
Very good
4,246 reviews

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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 9h 06m. 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 ($232), Delta ($256), and American Airlines ($286) offers the cheapest pricing from Louisville to San Antonio. You may be able to fly from Louisville to San Antonio for 38% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Louisville to San Antonio one-way?

    The cheapest airlines for a one-way flight from Louisville to San Antonio are Spirit Airlines ($116), American Airlines ($139), and Southwest ($144).

  • 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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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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$232Average$242FlexibilityNo cancel feeOn-time65%
DeltaCheapest$256Average$358FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$286Average$392FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$296Average$439FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$296Average$382FlexibilityNo cancel feeOn-time63%

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