Cheap flights from Salt Lake City to San Antonio from $103

If you aren’t able to travel during the month of February, then book flights to San Antonio from Salt Lake City during December instead. Flights to San Antonio in December, while not as cheap as those in February, still average around $399.

The cheapest day to depart on your flight to San Antonio is on a Thursday when prices can be found for as low as $439. 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 $607.

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 Salt Lake City to San Antonio in the evening for as low as $439. 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 $508. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Salt Lake City to San Antonio for the best Salt Lake City - San Antonio flight prices

You are more likely to see cheaper flights to San Antonio from Salt Lake City when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Salt Lake City for as low as $366 on momondo.

There are 4 cabin classes available to choose from on Salt Lake City 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, Southwest, and Delta are the most popular carriers operating from Salt Lake City to San Antonio

Delta, Frontier and Southwest are the top three most popular airlines that fly to San Antonio from Salt Lake City according to our data. Delta is the first choice among our users, with 52% 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.

Denver (DEN) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $279.

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 5h 42m.

Las Vegas (LAS) has the shortest average layover time for this route: 5h 12m.

The number of flights available between Salt Lake City and San Antonio is 8 per day as of November 2026. The most frequent departure time is 8:00PM, with 40% of daily flights leaving in the evening.

61 flights are operational weekly from Salt Lake City to San Antonio as of November 2026. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.