Returning to Norfolk in early September 1943 after the completion of the repairs, Baltimore and the destroyer USS Sigourney (DD-643) departed for the United States West Coast.

On 17 February 1944, Lieutenant (junior grade) Denver M. Baxter, USNR, flying one of Baltimore′s Vought OS2U Kingfisher floatplanes, covered by two Grumman F6F Hellcat fighters, rescued Lieutenant (junior grade) George M. Blair, USNR, of Fighting Squadron 9 (VF-9) less than 6,000 yards (5,500 m) from Japanese-held Dublon Island inside Truk Lagoon, where Blair had ditched his Hellcat.

Baltimore continued to provide fire support in the Marianas attacks (21–22 February), the Palau-Yap-Ulithi-Woleai raid (30 March–1 April 1944), the invasion of Hollandia (21–24 April 1944); the Truk-Satawan-Ponape raid (29 April–1 May 1944); air strikes against Marcus Island (19–20 May 1944) and Wake Island (23 May 1944); the invasion of Saipan (11–24 June 1944); and the Battle of the Philippine Sea (19–20 June 1944).

Returning to the United States in July 1944, Baltimore embarked President Franklin D. Roosevelt and his party and steamed to Pearl Harbor.

After Roosevelt met with Admiral Chester Nimitz and General Douglas MacArthur, Baltimore transported him to the Territory of Alaska.

Departing the Far East on 17 February 1946, she returned to the United States and was decommissioned and placed in reserve on 8 July 1946 at Bremerton, Washington.

Baltimore commenced pre-inactivation overhaul on her return from the Far East and went out of commission in reserve at Bremerton on 31 May 1956 after just 6+3⁄4 years of active service.

She was struck from the Navy List 15 February 1971, sold 10 April 1972 to Zidell Ship Dismantling Company Portland, Oregon, and scrapped in September 1972.