For the next four weeks, "Abbot" received routine maintenance and conducted training evolutions out of Espiritu Santo. Early in June, the destroyer headed back toward the Central Pacific in company with escort carriers and other destroyers. They stopped at Kwajalein in the Marshalls to make final preparations for the assault on Saipan. On 12 June, she stood out of Kwajalein lagoon in company with TG 53.7, the Carrier Support Group built around , , and . The task group arrived in the Mariana Islands on 16 June. While the air groups of the three carriers provided close air support for the assault troops – first, at Saipan and, later at Guam — "Abbot" and her sister ships in the screen again protected the carriers from enemy air and submarine forces. She and her charges remained with the invasion force throughout the decisive Battle of the Philippine Sea in which TF 58 shattered the remnants of Japanese naval air power. About a week later, on 26 June, she and joined forces to splash a Mitsubishi G4M "Betty". Through the month of July, "Abbot" continued to shepherd the carriers while their aviators struck targets on Saipan and Guam in support of the American invasion troops.