While airlines historically handed out blue and white paper customs forms mid-flight, this practice is rapidly disappearing in 2026 as global travel goes digital. Many countries, including the US, UK, and India, have shifted to digital declarations that you are expected to complete via a mobile app or web portal before you even board. For example, India's Baggage Rules 2026 mandate the use of the Atithi or Air Suvidha platforms, while the US often utilizes Mobile Passport Control (MPC). If you are flying to a destination that still uses paper, the flight attendants will typically distribute them about an hour before landing. However, many airports now favor automated kiosks in the arrivals hall where you scan your passport and answer customs questions on a touch screen. It is always wise to carry a pen just in case, but checking the entry requirements for your destination 24 hours before your flight is now the most essential part of your preparation.