Southwest Airlines (NYSE: LUV) is adding weekly flights to Cancun, Mexico, from St. Louis and from Nashville, Tennessee, starting Nov. 11.

The Dallas-based airline, which is the busiest carrier at St. Louis Lambert International Airport, also will add a second daily flight between St. Louis and both Fort Lauderdale, Florida, and Milwaukee to its November schedule, airport officials said.

Southwest on Thursday released its flight schedule through Jan. 7, 2018.

The new nonstop flights to Cancun…