The cheapest times to fly from SDF to SAT are

  • January 1st to February 25th
  • May 14th to June 3rd
  • July 2nd to July 22nd (except the week of July 9th)
  • August 20th to December 16th (except the weeks of September 24th, October 1st, November 19th, and November 26th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SDF to SAT is late October to early November. Prices can be as high as $837 for Sunday flights during late March, or as low as $273 for Tuesday flights around late October to early November.


When to Fly to San Antonio

Flying from Louisville, KY (SDF) to San Antonio, TX (SAT) will usually cost between $277 to $484 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late October to early November with an average ticket price of $310. Due to high demand the most expensive time to fly is late March, with an average price of $451. Planning your trip to low-cost times can easily save you $141 on economy flights and even more on first-class flights. Generally, any price below $351 can be considered a good price for a round-trip SDF to SAT flight.

See below for a graph of average weekly prices for the SDF to SAT route. All prices are for round-trip tickets in USD.

SDF to SAT Flight Prices

Compared to other flights, the SDF to SAT flight is much cheaper than the average and costs much less than the average flight leaving from Louisville. The average price per mile (for a direct flight) is $0.23, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $134 (31%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $294. Return trip prices are from the SAT to SDF flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SDF to SAT can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 2 hour 41 minutes may not be realistic.


Flight Questions Answered

Still have questions about flying from SDF to SAT? We’ve got answers.

Which airlines fly this route?

You can find 7 major airlines flying this route most often: Alaska, American, Delta, Frontier, Qantas, Southwest, United, and potentially more during busy seasons.

How far away is it from San Antonio International Airport to Louisville International-Standiford Field Airport?

The distance between the two airports is roughly 942 miles or 1516 kilometers.

How long does it take to fly from SDF to SAT?

The real-world flight time for a nonstop SDF to SAT flight is about 2 hour 41 minutes.

How many flights go between Louisville, KY and San Antonio, TX?

It depends on the day of the week and the date, but a typical day might have around 65 available flights from SDF to SAT.


Airport Location Info


Departing Airport

Origination code SDF
Origination airport name Louisville International-Standiford Field Airport
City Louisville, KY
Country the United States
Latitude 38.2
Longitude -85.7

Return Airport

Destination code SAT
Destination airport name San Antonio International Airport
City San Antonio, TX
Country the United States
Latitude 29.5
Longitude -98.5


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.