Generally, no, you are not permitted to keep airplane blankets in 2026, as they are considered part of the aircraft's cabin equipment and are reused across flights. Airlines like Delta, British Airways, and Emirates treat blankets, pillows, and headphones as inventory that is laundered and redistributed to ensure sustainability and cost-efficiency. Taking these items is technically considered theft, though enforcement is rarely aggressive unless someone is seen taking multiple items. The only major exception in 2026 occurs in Premium Cabins (First or Business Class) on certain long-haul international routes, where some airlines provide high-end, branded amenity kits or bedding that are explicitly labeled as "take-home" gifts. If you are flying in Economy, however, the blanket should remain on the seat. In 2026, frequent flyers are increasingly bringing their own travel blankets, which the TSA allows in both carry-on and checked luggage without restriction, for better hygiene and comfort.