Cheap flights from Massachusetts to San Antonio from $155

If you aren’t able to travel during the month of January, then book flights to San Antonio from Massachusetts during August instead. Flights to San Antonio in August, while not as cheap as those in January, still average around $383.

The cheapest day to depart on your flight to San Antonio is on a Friday when prices can be found for as low as $436. 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 $572.

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 $455. 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 $441 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 $327 on momondo.

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

Southwest 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 51% 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.

The number of flights available between Massachusetts and San Antonio is 5 per week as of September 2026. The most frequent departure day is Sun, with 40% of weekly flights leaving on this day.

Flight times vary depending on what airport in Massachusetts you fly out of and what airport in San Antonio you fly into. For example, flying from Boston to Austin takes 4h 23m on average. On the other hand, flying from Worcester to Austin takes 7h 58m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.