Cheap flights from Atlanta to San Antonio from $89

If you aren’t able to travel during the month of February, then book flights to San Antonio from Atlanta during September instead. Flights to San Antonio in September, while not as cheap as those in February, still average around $255.

The cheapest day to depart on your flight to San Antonio is on a Friday when prices can be found for as low as $307. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $390.

According to our data, the cheapest time of day to fly to San Antonio is in the afternoon. momondo users have found flights departing from Atlanta to San Antonio in the afternoon for as low as $284. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the morning, with an average ticket price of $389. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Atlanta Hartsfield-Jackson to San Antonio for the best Atlanta Hartsfield-Jackson - San Antonio flight prices

You are more likely to see cheaper flights to San Antonio from Atlanta when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $310 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Atlanta for as low as $196 on momondo.

There are 4 cabin classes available to choose from on Atlanta to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 14% on your flight if you consider stops on a Atlanta to San Antonio flight.

As of August 2026, prices for Atlanta to San Antonio flights are approximately 18% cheaper when compared to flights at the same time last year.

Southwest and United Airlines are the most popular carriers operating from Atlanta Hartsfield-Jackson to San Antonio

Frontier, Delta and Southwest are the top three most popular airlines that fly to San Antonio from Atlanta according to our data. Frontier is the first choice among our users, with 41% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 6 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

Denver (DEN) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.

Flights via Denver (DEN) offer the lowest average round-trip price of $355.

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 5h 26m.

Dallas (DFW) has the shortest average layover time for this route: 3h 32m.

The number of flights available between Atlanta and San Antonio is 8 per day as of August 2026. The most frequent departure time is 7:00PM, with 39% of daily flights leaving in the evening.

The number of flights available between Atlanta and San Antonio is 61 per week as of August 2026. The most frequent departure day is Sun, with 62% of weekly flights leaving on this day.