Cheap flights from Pennsylvania to San Antonio from $104

If you aren’t able to travel during the month of October, then book flights to San Antonio from Pennsylvania during September instead. Flights to San Antonio in September, while not as cheap as those in October, still average around $428.

The cheapest day to depart on your flight to San Antonio is on a Saturday when prices can be found for as low as $484. 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 $687.

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 Pennsylvania to San Antonio in the evening for as low as $329. 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 afternoon, with an average ticket price of $536. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Philadelphia to San Antonio for the best Pennsylvania - San Antonio flight prices

You are more likely to see cheaper flights to San Antonio from Pennsylvania when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $472 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Pennsylvania for as low as $333 on momondo.

There are 3 cabin classes available to choose from on Pennsylvania 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, Delta, and United Airlines are the most popular carriers operating from Pennsylvania to San Antonio

American Airlines, Southwest and United Airlines are the top three most popular airlines that fly to San Antonio from Pennsylvania according to our data. American Airlines is the first choice among our users, with 55% 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.

As of September 2026, there are 2 flights per day flying from Pennsylvania to San Antonio. The most common time of day flights depart is 5:00PM, with 100% of flights taking off in the afternoon.

The number of flights available between Pennsylvania and San Antonio is 14 per week as of September 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.