No, airline pilots do not always use the Instrument Landing System (ILS), though it is a primary tool for modern aviation. The ILS provides precise lateral and vertical guidance to the runway, and it is mandatory during "low-visibility" conditions (fog, heavy rain) to facilitate an Autoland. However, in 2026, most pilots prefer to perform manual visual approaches when the weather is clear and sunny. Manual flying allows pilots to maintain their "hands-on" proficiency and respond more dynamically to local wind conditions. Furthermore, not every runway at every airport is equipped with ILS; some smaller or remote airports rely on RNAV (GPS-based) approaches or older VOR/DME systems. Even at major hubs, air traffic control may ask pilots to perform a visual approach to increase airport efficiency, as ILS approaches require larger spacing between aircraft to protect the radio signals from interference. While the technology is always running in the background as a safety backup, the "human touch" remains the standard for the majority of landings in good weather.