Cheap flights from Phoenix to San Antonio from $70

If you aren’t able to travel during the month of December, then book flights to San Antonio from Phoenix 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 Tuesday when prices can be found for as low as $293. 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 $353.

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 to San Antonio at noon for as low as $276. 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 $319. Departure times in the morning 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 - San Antonio flight prices

You are more likely to see cheaper flights to San Antonio from Phoenix when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $288 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 for as low as $238 on momondo.

There are 3 cabin classes available to choose from on Phoenix to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier and Southwest are the most popular carriers operating from Phoenix to San Antonio

Frontier, American Airlines and Southwest are the top three most popular airlines that fly to San Antonio from Phoenix 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.

8 flights are operational daily from Phoenix to San Antonio as of April 2026. The most popular departure time for this route is 12:00PM, with 40% of flights per day taking off in the afternoon.

As of April 2026, 59 flights take off from Phoenix and land in San Antonio each week. The most common flight departure day for this route is Wed, with 20% of weekly flights taking off on this day.