Yes, you can generally leave the airport during a stopover in 2026, but your ability to do so depends on your nationality, visa status, and the length of your layover. If you are an international traveler, you must clear immigration and customs to "officially" enter the transit country, which may require a transit visa or an electronic authorization like an ESTA (USA) or ETIAS (Europe). For 2026 travelers, experts recommend a minimum of 8 hours for an international layover to account for the 2–3 hours needed for security and passport control upon re-entry. If your connection is within the Schengen Area, you can walk out of the airport as if it were a domestic flight. Always check your ticket rules, as some ultra-low-cost carriers may "void" your onward journey if you exit the terminal, though this is rare for major international airlines.