Cheap flights from Kansas City to San Antonio from $128

If you aren’t able to travel during the month of August, then book flights to San Antonio from Kansas City during October instead. Flights to San Antonio in October, while not as cheap as those in August, still average around $326.

The cheapest day to depart on your flight to San Antonio is on a Tuesday when prices can be found for as low as $265. 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 $396.

According to our data, the cheapest time of day to fly to San Antonio is in the morning. momondo users have found flights departing from Kansas City to San Antonio in the morning for as low as $274. 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 at noon, with an average ticket price of $389. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to San Antonio from Kansas City when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $359 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Kansas City for as low as $252 on momondo.

There is only 1 cabin class available to choose from on Kansas 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.

You could potentially save up to 9% on your flight if you consider stops on a Kansas City to San Antonio flight.

As of May 2026, prices for Kansas City to San Antonio flights are approximately 18% cheaper when compared to flights at the same time last year.

Southwest and Delta are the most popular carriers operating from Kansas City to San Antonio

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to San Antonio from Kansas City according to our data. Southwest is the first choice among our users, with 67% 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.

Dallas (DFW) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $306.

Flights connecting via Dallas (DAL) have the shortest average one-way travel time: 4h 15m.

Dallas (DFW) has the shortest average layover time for this route: 1h 17m.

As of May 2026, there are 1 flights per day flying from Kansas City to San Antonio. The most common time of day flights depart is 3:00PM, with 50% of flights taking off in the afternoon.

The number of flights available between Kansas City and San Antonio is 7 per week as of May 2026. The most frequent departure day is Mon, with 29% of weekly flights leaving on this day.