Cheap flights from Massachusetts to San Antonio from $129

If you aren’t able to travel during the month of February, then book flights to San Antonio from Massachusetts during September instead. Flights to San Antonio in September, while not as cheap as those in February, still average around $102.

The cheapest day to depart on your flight to San Antonio is on a Tuesday when prices can be found for as low as $398. 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 Monday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Monday is $539.

According to our data, the cheapest time of day to fly to San Antonio is in the morning. momondo users have found flights departing from Massachusetts to San Antonio in the morning for as low as $443. 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 at noon, with an average ticket price of $598. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Boston Logan Intl to San Antonio for the best Massachusetts - San Antonio flight prices

You are more likely to see cheaper flights to San Antonio from Massachusetts when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $402 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Massachusetts for as low as $310 on momondo.

Southwest, United Airlines, and Delta are the most popular carriers operating from Massachusetts to San Antonio

Delta, JetBlue and Southwest are the top three most popular airlines that fly to San Antonio from Massachusetts according to our data. Delta is the first choice among our users, with 53% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 7 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

The number of flights available between Massachusetts and San Antonio is 1 per day as of May 2026. The most frequent departure time is 8:00AM, with 100% of daily flights leaving at noon.

The number of flights available between Massachusetts and San Antonio is 9 per week as of May 2026. The most frequent departure day is Sun, with 33% of weekly flights leaving on this day.