Cheap flights from San Antonio to St. Louis from $82

In general, August is the cheapest month to fly from San Antonio to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $236. The month of July is another great option to travel to St. Louis, with average flight prices from San Antonio averaging around $312.

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $366. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $517. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

Flying to St. Louis from San Antonio in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $356 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $527 per ticket.

Fly from San Antonio to Lambert-St Louis for the best San Antonio - Lambert-St Louis flight prices

You are more likely to see cheaper flights to St. Louis from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $367 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from San Antonio for as low as $198 on momondo.

There is only 1 cabin class available to choose from on San Antonio to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Delta and Southwest are the most popular carriers operating from San Antonio to Lambert-St Louis

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to St. Louis from San Antonio according to our data. Southwest is the first choice among our users, with 73% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 5 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

Atlanta (ATL) was the most common stop: 80% of momondo users choosing 1-stop flights on this route connected there.

Flights via Dallas (DFW) offer the lowest average round-trip price of $231.

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 3h 53m.

Dallas (DFW) has the shortest average layover time for this route: 0h 52m.