As a unit of the Southern Attack Force, TF 79, "Luce" sortied from Manus, Admiralty Islands, 11 October. During the assault on Leyte 20 to 23 October, she patrolled outside the LST-transport areas providing air cover. Between 1 November and 12 December, "Luce" sailed from Manus to New Guinea on escort and ASW patrols, and from 12 to 27 December supported the Huon Gulf, New Guinea, landing operations. On 27 December she got underway to screen transports for the Lingayen Gulf attack and landings.