Palestinians have been allowed to return home to the largely destroyed region of northern Gaza after more than 12 months of besiegement by Israel.
Israel’s withdrawal comes in the wake of a fragile ceasefire brokered with Hamas in recent months.
Thousands of Palestinians headed north on Monday after waiting for days to cross into their homeland.
Associated Press reporters said people were seen crossing the Netzarim corridor shortly after 7am.
The opening was delayed over a dispute between Hamas and Israel, which said the militant group had changed the order of the hostages it released in exchange for hundreds of Palestinian prisoners.