have itchy feet
To feel the urge to stray from one's routine, often by traveling. Primarily heard in UK, Australia. Every so often, Claire has itchy feet and sets off for a foreign destination.
get (or have) itchy feet be restless; have a strong urge to travel or move from place to place. informal
get/have itchy ˈfeet (informal) a desire to travel, move house, change your job, etc: He never stays in a job long. He gets itchy feet after two or three years.