Earlier, the state-run Anadolu agency said they were traveling to carry out operations against the rebel group.
Four of the soldiers were killed on the site while two others died of their wounds in hospital.
The agency said the military had launched a “wide-scale” operation, backed by air power, to apprehend the assailants.
The Kurdistan Workers’ Party, or PKK, has waged a more than three-decade old insurgency in Turkey’s mostly Kurdish southeast region. The conflict has killed tens of thousands of people since it started in 1984.
The group is considered a terror organization by Turkey and its Western allies.