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$159+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SAT
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Find cheap flights from Louisville to San Antonio with Cheapflights

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Cheapflights Tip: The best prices from Louisville Intl to San Antonio are usually found in August or June, booked 86 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$280
(Mytrip)

One-way from

$159
(United Airlines)

Popular in

September

Cheapest in

August

Average price

$441
Provider with most accurate pricing for Louisville Intl-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-San Antonio flights.
Search Deals
From Louisville Intl to San Antonio
Search Deals
One-way flight from Louisville Intl to San Antonio
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/26. 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 12/511:55 amSDF - SAT
1 stop12h 31mMultiple Airlines
Sun 12/71:55 pmSAT - SDF
1 stop19h 36mMultiple Airlines
Deal found 10/26$247
This Mytrip deal was found by Cheapflights users on 10/27. 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 11/206:48 pmSDF - SAT
2 stops25h 33mMultiple Airlines
Sun 11/237:37 pmSAT - SDF
1 stop11h 56mMultiple Airlines
Deal found 10/27$280
This Delta deal was found by Cheapflights users on 10/27. 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.
Thu 12/46:16 pmSDF - SAT
1 stop7h 18mDelta
Wed 12/105:20 amSAT - SDF
1 stop7h 29mDelta
Deal found 10/27$287
This Delta deal was found by Cheapflights users on 10/27. 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 12/96:16 pmSDF - SAT
1 stop7h 18mDelta
Fri 12/126:30 amSAT - SDF
1 stop4h 43mDelta
Deal found 10/27$288
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/276:30 amSDF - SAT
1 stop7h 31mAmerican Airlines
Tue 12/26:00 amSAT - SDF
1 stop6h 12mAmerican Airlines
Deal found 10/28$289
This Southwest deal was found by Cheapflights users on 10/27. 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.
Thu 12/41:10 pmSDF - SAT
1 stop6h 45mSouthwest
Wed 12/105:45 amSAT - SDF
2 stops9h 50mSouthwest
Deal found 10/27$292
This Southwest deal was found by Cheapflights users on 10/28. 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.
Thu 11/279:00 amSDF - SAT
1 stop4h 25mSouthwest
Tue 12/26:20 amSAT - SDF
2 stops7h 25mSouthwest
Deal found 10/28$304
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 12/14:05 pmSDF - SAT
1 stop24h 54mMultiple Airlines
Sun 12/71:55 pmSAT - SDF
1 stop19h 36mMultiple Airlines
Deal found 10/27$305

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 October 28, 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 12/4

6:16 pm-12:34 am

1 stop7h 18m

San Antonio

Wed 12/10

5:20 am-1:49 pm

1 stop7h 29m

$287

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Tue 12/9

6:16 pm-12:34 am

1 stop7h 18m

San Antonio

Fri 12/12

6:30 am-12:13 pm

1 stop4h 43m

$288

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Thu 12/4

1:10 pm-6:55 pm

1 stop6h 45m

San Antonio

Wed 12/10

5:45 am-4:35 pm

2 stops9h 50m

$292

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Thu 11/27

9:00 am-12:25 pm

1 stop4h 25m

San Antonio

Tue 12/2

6:20 am-2:45 pm

2 stops7h 25m

$304

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Tue 11/25

7:13 am-2:10 pm

1 stop7h 57m

San Antonio

Tue 12/30

5:00 am-10:08 am

1 stop4h 08m

$316

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Thu 11/27

6:30 am-1:01 pm

1 stop7h 31m

San Antonio

Mon 12/1

5:39 pm-12:22 am

1 stop5h 43m

$324

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Wed 12/24

6:00 am-10:11 am

1 stop5h 11m

San Antonio

Sun 12/28

5:10 am-11:26 am

1 stop5h 16m

$329

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Tue 12/16

7:12 am-11:58 am

1 stop5h 46m

San Antonio

Fri 12/19

5:00 am-10:08 am

1 stop4h 08m

$337

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Mon 12/22

6:51 pm-12:38 am

1 stop6h 47m

San Antonio

Fri 12/26

5:10 am-11:26 am

1 stop5h 16m

$337

LouisvilleSan Antonio

SDF - SAT

SDFSAT

Louisville Intl

Sun 12/21

6:06 pm-10:49 pm

1 stop5h 43m

San Antonio

Sat 12/27

5:20 am-1:12 pm

1 stop6h 52m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 15 results
1
2

Compare providers for flights from Louisville to San Antonio

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 San Antonio in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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-San Antonio flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Louisville-San Antonio flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Louisville-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-San Antonio flights, Cheapflights users trust eDreams the most. eDreams 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-San Antonio 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 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 October 24, 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, October is the cheapest month in which you can book a flight from Louisville to San Antonio (average of $66). Flying from Louisville to San Antonio in February is currently the most expensive (average of $136). 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 October 28, 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 17% 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 October 28, 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
4,240 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

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
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

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
7.9
Good
7,994 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

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
9,001 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

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
11,032 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

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
8,116 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

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 Delta and Southwest fly from Louisville to San Antonio in about 6h 45m. The time it takes to get you to your destination can typically vary by up to 33m. There are 941 mi between Louisville and San Antonio. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, Spirit Airlines ($94), Delta ($236), and American Airlines ($296) offers the cheapest pricing from Louisville to San Antonio. You may be able to fly from Louisville to San Antonio for 76% 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 United Airlines ($159), Spirit Airlines ($162), and Southwest ($164).

  • 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, October is the cheapest month in which you can book a flight from Louisville to San Antonio (average of $66). Flying from Louisville to San Antonio in February is currently the most expensive (average of $136). 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$94Average$237FlexibilityNo cancel feeOn-time65%
DeltaCheapest$236Average$361FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$296Average$391FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$309Average$382FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$325Average$464FlexibilityNo cancel feeOn-time69%

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