Cheap flights from Phoenix Sky Harbor Intl Airport to San Antonio from $87

If you aren’t able to travel during the month of December, then book flights to San Antonio from Phoenix Sky Harbor Intl Airport during October instead. Flights to San Antonio in October, while not as cheap as those in December, still average around $222.

The cheapest day to depart on your flight to San Antonio is on a Wednesday when prices can be found for as low as $284. 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 $337.

According to our data, the cheapest time of day to fly to San Antonio is at noon. momondo users have found flights departing from Phoenix Sky Harbor Intl Airport to San Antonio at noon for as low as $275. 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 $317. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Phoenix Sky Harbor Intl to San Antonio for the best Phoenix Sky Harbor Intl - San Antonio flight prices

You are more likely to see cheaper flights to San Antonio from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $284 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Phoenix Sky Harbor Intl Airport for as low as $181 on momondo.

You could potentially save up to 14% on your flight if you consider stops on a Phoenix Sky Harbor Intl Airport to San Antonio flight.

As of May 2026, prices for Phoenix Sky Harbor Intl Airport to San Antonio flights are approximately 37% more expensive when compared to flights at the same time last year.

Frontier, Southwest, and Delta are the most popular carriers operating from Phoenix Sky Harbor Intl to San Antonio

Frontier, American Airlines and Southwest are the top three most popular airlines that fly to San Antonio from Phoenix Sky Harbor Intl Airport according to our data. Frontier is the first choice among our users, with 42% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 4 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

Denver (DEN) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.

Flights via Denver (DEN) offer the lowest average round-trip price of $211.

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 5h 03m.

Las Vegas (LAS) has the shortest average layover time for this route: 1h 09m.

8 flights are operational daily from Phoenix Sky Harbor Intl Airport to San Antonio as of May 2026. The most popular departure time for this route is 12:00PM, with 45% of flights per day taking off in the afternoon.

As of May 2026, 57 flights take off from Phoenix Sky Harbor Intl Airport and land in San Antonio each week. The most common flight departure day for this route is Mon, with 19% of weekly flights taking off on this day.