On 8 May, at Majuro, "Conway" joined the 5th Fleet. She sailed from Majuro 14 May for Pearl Harbor and Kwajalein, where she loaded troops for the Saipan operation, landed them 15 June under heavy gunfire, and served as close fire support and screening vessel off the island. After replenishing at Eniwetok, "Conway" joined in the preassault bombardment of Guam and Tinian, remaining to cover the landings at Tinian. She continued to operate in the Mariana Islands campaign until 12 August, when she cleared for San Francisco and overhaul.