In 1967, as VTŽ Chomutov, the team was promoted to the highest league again but was relegated the very next year.

In 1997, as KLH Chomutov, the club bought the license in the First National Hockey League (FNHL) from HC Slovan Ústečtí Lvi.

During the play-outs in the 2013–14 season Piráti Chomutov lost and returned to the First National Hockey League.

Pirati Chomutov became a winner and after play off returned to the top-level league (season 2015–16).

Three players, two top club officials and a reporter were among others on board the scheduled flight from Zurich to Prague, which crashed in fields after an engine failure.