Yes, pilots can and frequently do land without an Instrument Landing System (ILS) by performing what is known as a Visual Approach. While an ILS provides precise electronic horizontal and vertical guidance to the runway—essential for landing in heavy fog or low visibility—it is not a requirement for landing in clear weather. Under Visual Flight Rules (VFR) or when cleared for a visual approach under Instrument Flight Rules (IFR), a pilot uses their eyes to maintain a stable descent path, often aided by visual light systems on the ground like a PAPI (Precision Approach Path Indicator) or a VASI (Visual Approach Slope Indicator). Additionally, modern aircraft are equipped with other non-precision approach technologies, such as RNAV (GPS), which allow for guided landings at airports that may not have expensive ILS hardware installed. In 2026, while the ILS remains the "gold standard" for safety in "Zero-Zero" visibility conditions, most professional pilots maintain high proficiency in manual, visual landings to ensure they can safely return to earth if the electronic ground equipment is out of service or unavailable.