In an earlier tweet, the ministry attached a photograph of a Turkish warplane taking off and said: "Time for reckoning! The scoundrels are being held accountable for the treacherous attacks!"
The operation follows last Sunday's terror attack on Istanbul's crowded Istiklal Avenue that killed at least six and left 81 injured.
In its more than 35-year terror campaign against Türkiye, the PKK -- listed as a terrorist organization by Türkiye, the US and the European Union -- has been responsible for the deaths of more than 40,000 people, including women, children and infants. The YPG is the terror group's Syrian offshoot.