Steaming via the Panama Canal and Bora Bora in the Society Islands, "Allentown" reached the northern coast of New Guinea at the end of September 1944. She then began patrol and escort duty in the New Guinea area. At the end of October 1944, she participated briefly in the occupation of the island of Morotai in the Molucca Islands. In mid-November 1944, she began escorting convoys between Hollandia, New Guinea, and Leyte in the Philippine Islands in support of the U.S. invasion there. Those duties and convoy-escort missions between the various islands of the Philippine archipelago occupied her time until early March 1945. On 9 March, "Allentown" joined the escort of a Ulithi-bound convoy on the first leg of her voyage back to the United States. She arrived at the Puget Sound Navy Yard in Bremerton, Washington, on 7 April 1945.