The league temporarily operated for the 2021 season as the Low-A Southeast before reassuming its original moniker in 2022.

The league originated in 1919 with teams in Bartow, Bradenton, Lakeland, Orlando, Sanford, and Tampa, Florida.

Initially, the FSL was classified as a Class D circuit, roughly equivalent to a Rookie-level league today.

There it continued until the next reorganization in 1990 when it was elevated to Class A-Advanced, remaining at the third rung on the minor league ladder.

Years later, the 2017 FSL Championship finals were canceled on September 5, due to the threat of Hurricane Irma.