Cheap flights from Newark Airport to San Antonio from $80

If you aren’t able to travel during the month of June, then book flights to San Antonio from Newark Airport during July instead. Flights to San Antonio in July, while not as cheap as those in June, still average around $364.

The cheapest day to depart on your flight to San Antonio is on a Thursday when prices can be found for as low as $396. 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 $525.

According to our data, the cheapest time of day to fly to San Antonio is in the afternoon. momondo users have found flights departing from Newark Airport to San Antonio in the afternoon for as low as $389. 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 $437. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Newark to San Antonio for the best Newark - San Antonio flight prices

You are more likely to see cheaper flights to San Antonio from Newark Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $402 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Newark Airport for as low as $289 on momondo.

There are 4 cabin classes available to choose from on Newark to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 43% on your flight if you consider stops on a Newark Airport to San Antonio flight.

As of February 2026, prices for Newark Airport to San Antonio flights are approximately 10% more expensive when compared to flights at the same time last year.

United Airlines and Spirit Airlines are the most popular carriers operating from Newark to San Antonio

United Airlines, Spirit Airlines and Delta are the top three most popular airlines that fly to San Antonio from Newark Airport according to our data. United Airlines is the first choice among our users, with 57% 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.

Atlanta (ATL) was the most common stop: 92% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $227.

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 5h 30m.

Detroit (DTW) has the shortest average layover time for this route: 0h 46m.

The number of flights available between Newark Airport and San Antonio is 3 per day as of February 2026. The most frequent departure time is 8:00AM, with 50% of daily flights leaving at noon.

As of February 2026, 24 flights take off from Newark Airport and land in San Antonio each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.