Why Hailey Upton Left Chicago P.D. — and When She's Coming Back
Reporting by Nbc notes that Detective Hailey Upton (Tracy Spiridakos) departed Chicago P.D. after serving with the Intelligence Unit from Season 4 to Season 11, accepting an unknown job in a new city. She was a fan favorite known for her tenacity and reliability, and had a slow-burning romance with Detective Jay Halstead (Jesse Lee Soffer) that ended in divorce after Halstead left Chicago.
Upton's decision followed much deliberation after Halstead's indefinite departure in Season 10 left their marriage undone. Sgt. Hank Voight was sad to see her go but glad she was prioritizing herself; Spiridakos said she took comfort in Upton's final scene, noting the character smiles on the ride to the airport and goes into a positive, happier place.
Upton and Halstead will return in the 2026 One Chicago crossover airing Wednesday, March 4 on NBC, a three-hour event that begins with Chicago Fire at 8/7c, continues with Chicago Med at 9/8c, and concludes with Chicago P.D. at 10/9c.