Check-in and check-out times at St. Regis Hotels can vary slightly depending on the specific location. Generally, the standard check-in time is around 3:00 PM, while check-out typically occurs at 12:00 PM. However, these times may be flexible depending on availability and specific policies of the individual hotel. It is advisable for guests to confirm the exact times directly with the specific St. Regis property they plan to visit or check the official website for the most accurate information. Many St. Regis locations also offer options for early check-in or late check-out, subject to availability, which can enhance the experience for their guests. Therefore, planning ahead is often beneficial for maximizing comfort during the stay.