"Finally, I will be freed," De Lima told reporters outside the court after her bail was granted.
Two of three cases against De Lima have been dismissed and she had sought bail in the one pending case on health grounds, which the court granted on Monday.
Her lawyer, Filibon Tacardon, told Reuters by phone, De Lima could walk out of prison later on Monday.
Police always denied that and Duterte insisted police were under orders to kill only in self-defence.
Reporting by Neil Jerome Morales and Mikhail Flores; Editing by Martin PettyOur Standards: The Thomson Reuters Trust Principles.
Persons:
Leila de Lima, Eloisa Lopez, De Lima, Rodrigo Duterte's, Duterte, Filibon Tacardon, Neil Jerome Morales, Mikhail Flores, Martin Petty
Organizations:
Muntinlupa, of Justice, REUTERS, Reuters, Police, Thomson
Locations:
Philippines, Muntinlupa, Lima, MANILA