- SPB airport, also known as St. Petersburg-Clearwater International Airport, is located in Pinellas County, Florida, USA. It serves the St. Petersburg and Clearwater areas, as well as the Tampa Bay region. The airport operates with a single terminal building and offers both domestic and international flights. It is a focus city for Allegiant Air, which operates numerous routes from the airport. SPB airport provides a range of amenities for travelers, including dining options, retail stores, car rental services, and parking facilities. The airport serves as a convenient gateway for tourists visiting the popular beaches and attractions in the St. Petersburg and Clearwater areas.