Cheap flights from Baltimore to San Antonio from $82

If you aren’t able to travel during the month of August, then book flights to San Antonio from Baltimore during September instead. Flights to San Antonio in September, while not as cheap as those in August, still average around $327.

The cheapest day to depart on your flight to San Antonio is on a Thursday when prices can be found for as low as $332. 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 $491.

According to our data, the cheapest time of day to fly to San Antonio is in the evening. momondo users have found flights departing from Baltimore to San Antonio in the evening for as low as $321. 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 $392. 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 Baltimore/Washington - San Antonio flight prices

You are more likely to see cheaper flights to San Antonio from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $403 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Baltimore for as low as $215 on momondo.

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

No. A direct flight is the cheapest option for a flight between Baltimore to San Antonio.

As of February 2026, prices for Baltimore to San Antonio flights are approximately 80% more expensive when compared to flights at the same time last year.

Spirit Airlines, Frontier, and American Airlines are the most popular carriers operating from Baltimore/Washington to San Antonio

United Airlines, Southwest and American Airlines are the top three most popular airlines that fly to San Antonio from Baltimore according to our data. United Airlines is the first choice among our users, with 46% 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.

Orlando (MCO) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Orlando (MCO) offer the lowest average round-trip price of $196.

Flights connecting via Charlotte (CLT) have the shortest average one-way travel time: 5h 10m.

Charlotte (CLT) has the shortest average layover time for this route: 0h 30m.

The number of flights available between Baltimore and San Antonio is 1 per day as of February 2026. The most frequent departure time is 8:00AM, with 40% of daily flights leaving at noon.

As of February 2026, 7 flights take off from Baltimore and land in San Antonio each week. The most common flight departure day for this route is Thu, with 29% of weekly flights taking off on this day.