The six were among 10 players to test positive for Covid-19 in the first raft of testing before the squad was due to fly last Sunday.
But the players in question — Mohammad Hafeez, Wahab Riaz, Mohammad Hasnain, Shadab Khan, Mohammad Rizwan and Fakhar Zaman — have now been cleared to join the touring party.
But Imran Khan, Kashif Bhatti, Haider Ali and Haris Rauf were held back again after all four again tested positive for the coronavirus.
"Fakhar Zaman, Mohammad Hasnain, Mohammad Hafeez, Mohammad Rizwan, Shadab Khan and Wahab Riaz have tested negative for Covid-19 for the second time in three days and, as such, are now eligible to join the Pakistan men's national cricket team in Worcestershire.
"The players were retested on Monday, 29 June, following a first negative test on 26 June.
"The PCB will now start making their travel arrangements and the departure details will be shared in due course."
Pakistan are using New Road as their base and training camp during a mandatory 14-day quarantine before then moving to Derbyshire's County Ground on July 13 to begin internal warm-up matches.
They are due to play three Tests and three Twenty20s against England in August and September.