Southwest Airlines is adding cargo to the services it will offer at Cincinnati/Northern Kentucky International Airport when it begins flying to Chicago’s Midway Airport and Baltimore/Washington Thurgood Marshall International Airport, the low-cost carrier announced Friday.

Cargo service will start on June 5, one day after the carrier begins passenger service.

“Companies around the country rely on Southwest’s relentlessly reliable cargo team to get the job done,” said Matt Buckley, vice…