As early as Roman times, sandstone was being quarried in what is now Flonheim’s municipal area.

Some sculptural finds are on display at the Alzey Museum, such as a Viergötterstein (a “four-god stone”, a pedestal on which a Jupiter Column was customarily stood).

About 1133, Waldgrave Emich II endowed an Augustinian church canonical foundation (monastery), which was dissolved in 1554.

In Flonheim stood an early postal station on the roughly 920 km-long Habsburg postal route running from Innsbruck to Mechelen (north of Brussels), which was run by the family Taxis.

The municipal election held on 7 June 2009 yielded the following results:[3] The municipality’s arms might be described thus: Quarterly, first and fourth sable a lion rampant guardant argent langued gules, second Or a lion rampant of the third armed and crowned of the second, and third Or two fish addorsed hauriant of the third.

Local public transport is limited to buslines run by Omnibusverkehr Rhein-Nahe, notably to the town of Alzey.