Luddington attended the American School in England at Thorpe, Surrey. She later moved to suburban Austin, Texas, United States when she was fourteen, and attended Westwood High School for a year.
She enrolled in Susquehanna University in Pennsylvania at the age of nineteen, after six months she left and transferred to the New York Film Academy. In 2003, she was part of the school’s first one-year acting class program. After training as an actor, Luddington then returned to England before moving to Los Angeles to pursue a career in acting.
