$99 Find Cheap Southwest Flights from St. Louis to Austin

When to Book Flights with Southwest from St. Louis to Austin

• Is Southwest the cheapest airline to fly with from St. Louis to Austin?

  With an average price of $331 return, Southwest is not the cheapest airline to fly from St. Louis to Austin with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $234 on average.

• What is the cheapest Southwest flight from St. Louis to Austin?

  In the last 3 days, the lowest price for a flight with Southwest from St. Louis to Austin was $157 for a return flight and $68 for a one-way flight.

• Does Southwest fly direct to Austin from St. Louis?

  Yes, Southwest does offer direct flights for the route, with around 18 flights per week.

• What’s the cheapest day of the week to fly from St. Louis to Austin with Southwest?

  On average, the cheapest day of the week to fly from St. Louis to Austin with Southwest is Tuesday, when prices are around $97. The most expensive day is generally Wednesday, where the average price is around $146.

• What’s the cheapest month to fly from St. Louis to Austin with Southwest?

  The cheapest month for Southwest flights to Austin from St. Louis is generally January, where plane tickets cost $180 on average. If possible, try to avoid the most expensive months of February and June, where tickets cost $268 and $283 respectively.