Cheap flights from Maryland to San Antonio from $123

If you aren’t able to travel during the month of October, then book flights to San Antonio from Maryland during March instead. Flights to San Antonio in March, while not as cheap as those in October, still average around $107.

The cheapest day to depart on your flight to San Antonio is on a Thursday when prices can be found for as low as $349. 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 $507.

According to our data, the cheapest time of day to fly to San Antonio is at noon. momondo users have found flights departing from Maryland to San Antonio at noon for as low as $309. 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 $400. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Baltimore/Washington to San Antonio for the best Maryland - San Antonio flight prices

You are more likely to see cheaper flights to San Antonio from Maryland when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $395 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Maryland for as low as $259 on momondo.

There is only 1 cabin class available to choose from on Maryland to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier, Delta, and Southwest are the most popular carriers operating from Maryland to San Antonio

Southwest, American Airlines and Delta are the top three most popular airlines that fly to San Antonio from Maryland according to our data. Southwest is the first choice among our users, with 63% 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.

As of June 2026, there are 10 flights per day flying from Maryland to San Antonio. The most common time of day flights depart is 8:00AM, with 53% of flights taking off at noon.

As of June 2026, there are 76 flights per week flying from Maryland to San Antonio. The most common day of the week flights depart is Mon, with 20% of flights taking off on this day.