The most reliable and legal way to download movies for flights in 2026 is through the offline viewing features of major streaming apps like Netflix, Disney+, Amazon Prime Video, and Apple TV+. Most of these services allow you to download content directly to your tablet or smartphone while on a Wi-Fi connection, with the "standard" download quality being sufficient for mobile screens. For those looking for free options, YouTube Premium allows for legal downloads of virtually any video on the platform, and apps like Tubi or Crackle offer select titles for offline play. A "pro-tip" for 2026 is to check your library's digital access; many libraries use the Hoopla or Libby apps, which allow you to "borrow" and download recent blockbuster movies for free. Always ensure you open the app at least once before boarding to "verify" the licenses, as some downloads can "expire" or become locked if the app hasn't checked in with its servers within 48 hours.