Cheap flights from Maine to San Antonio from $91

If you aren’t able to travel during the month of July, then book flights to San Antonio from Maine during September instead. Flights to San Antonio in September, while not as cheap as those in July, still average around $348.

The cheapest day to depart on your flight to San Antonio is on a Friday when prices can be found for as low as $361. 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 $457.

According to our data, the cheapest time of day to fly to San Antonio is at noon. momondo users have found flights departing from Maine to San Antonio at noon for as low as $373. 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 $394. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

You are more likely to see cheaper flights to San Antonio from Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $389 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Maine for as low as $320 on momondo.

Spirit Airlines, Frontier, and Southwest are the most popular carriers operating from Maine to San Antonio

American Airlines, Delta and Southwest are the top three most popular airlines that fly to San Antonio from Maine according to our data. American 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 5 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 Maine and San Antonio is 9 per week as of February 2026. The most frequent departure day is Tue, with 22% of weekly flights leaving on this day.

Flight times vary depending on what airport in Maine you fly out of and what airport in San Antonio you fly into. For example, flying from Portland to Austin takes 6h 17m on average. On the other hand, flying from Bangor to Austin takes 9h 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.