Whether you need an Airport Transit Visa (ATV) for Paris (CDG or Orly) depends on your nationality and your destination. If you are staying within the international transit zone and your final destination is outside the Schengen Area, many nationalities do not require a visa. However, citizens of specific countries (such as India, Nigeria, and several others) must have an ATV even if they don't leave the airport. A major change arriving in the last quarter of 2026 is the ETIAS (European Travel Information and Authorisation System), which will require visa-exempt travelers to have a digital authorization for all stays, including transit if they pass through border control. If your layover requires you to change airports (e.g., from CDG to Orly) or stay overnight in a hotel outside the terminal, you will need a full Schengen visa.