Many airlines provide blankets to passengers on international flights, particularly for long-haul flights where passengers may want to sleep or rest. However, some airlines may only provide blankets to passengers in certain cabin classes, such as business or first class.

On most full-service airlines, blankets and pillows are provided for long-haul international flights, even in economy class. These items are typically placed on your seat before boarding or distributed shortly after takeoff to ensure passenger comfort during overnight or multi-hour segments. However, the quality and availability have shifted in recent years; some budget-friendly long-haul carriers (like Norse Atlantic or certain "basic economy" fares) may charge a fee for a comfort kit or require you to purchase one on board. In premium cabins like Business or First Class, airlines often provide high-end duvets or designer blankets. Due to increased sustainability efforts, many airlines now use blankets made from recycled plastic bottles and provide them in sealed, sanitized paper packaging.