The tree fell on the ropeway of Gulmarg Gondola and snapped it leading to the cable car falling down, a police official said.
He said the tree was uprooted due to strong winds.
Out of the five, four belonged to one family from Delhi's Shalimar Bagh, the official said.
They have been identified as Jayant Andraskar, his wife Manshea Andraskar and their two daughters - Anagha and Janhvi, he said.