Hello there The three Pacific Fleet carriers at the time were USS Enterprise, USS Lexington, and USS Saratoga.
Enterprise and Lexington were west of Oahu that morning, although Enterprise was coming back in and only a few hundred miles out.
Saratoga was in San Diego at the time of the attack, but she hurried back out as soon as word of the attack came in.
Yorktown, Wasp, and Hornet all arrived in the Pacific a bit later on. Yorktown was originally part of the Pacific Fleet, by the way, but had been sent back to the Atlantic because there was already a "hot" war going on over there in 1940-41.