A new and distinct cultivar of blueberry plant named ‘BB07-7FL-4’ as described and shown herein. ‘BB07-7FL-4’ is a new and distinct low chill tetraploid Southern highbush blueberry (Vaccinium) variety of complex ancestry, based largely on V. corymbosum with over 13% V. darrowii and small contributions of V. angustifolium, V. tenellum, and V. ashei. ‘BB07-7FL-4’ is a productive very early season variety that ripens nearly two weeks before Star, U.S. Plant Pat. No. 10,675. ‘BB07-7FL-4’ is intended for areas that successfully grow lower chill Southern highbush varieties. The fruit of ‘BB07-7FL-4’ are large, typically 18 mm or more in diameter with an average berry weight of 2.9 gram per berry, well exposed on a medium upright bush with a small crown. ‘BB07-7FL-4’ has very good flavor with a balanced amount of sugar and acidity and is also firm and juicy.