Chick-fil-A stops serving breakfast at 10:30 a.m. from Monday through Saturday, with no breakfast service on Sundays as the restaurants are closed that day. After 10:30 a.m., Chick-fil-A transitions to its lunch menu. Some locations might be a little flexible if you arrive a few minutes late, but generally, 10:30 a.m. is the hard cutoff for breakfast orders. Breakfast hours typically start at 6:30 a.m.