Yes, downloading movies to your phone is the most reliable way to ensure entertainment on a plane, as it does not require an active internet connection once the flight is in the air. Major streaming services like Netflix, Disney+, Amazon Prime Video, and Max all feature a "Download" or "Offline" icon next to most titles. You must do this while connected to Wi-Fi before you head to the airport, as movie files are large and can quickly consume data. Once downloaded, these files are stored within the specific app's library and remain available for a set period (usually 48 hours to 30 days depending on the license). When you are on the plane, simply put your phone in Airplane Mode, open the app, and navigate to your "Downloads" section. It is a good "best practice" in 2026 to also check for app updates before you leave your home, as some apps require an "activation check" via the internet every time they are opened, which could fail if you are already in the air without Wi-Fi.