Whether you need a transit visa for a European layover in 2026 depends on your nationality, your destination, and whether you stay "airside." For most travelers (like U.S. or UK citizens), a transit visa is not required for a standard layover. However, citizens of certain countries (including Afghanistan, Nigeria, and others) require an Airport Transit Visa (ATV) even if they never leave the international transit zone. A high-value update for 2026: Germany has recently lifted the ATV requirement for Indian nationals, significantly easing travel to the U.S. and Canada via Frankfurt or Munich. It is a peer-to-peer essential to know that if your layover involves "self-transferring" (picking up bags and re-checking) or moving between two Schengen airports (e.g., Paris to Amsterdam to Delhi), you are technically entering the Schengen Area and may need a full Schengen Visa. Always verify if your transit requires "terminal switching" that puts you past passport control, as this is the most common "trap" for unprepared travelers.