I often pair my leggings and t-shirt with a long cardigan that has pockets. Men might want to bring a hoodie for an added layer. What is this? You might also want to wear a blanket scarf on the flight.

The best outfit for a long-haul flight in 2026 prioritizes compression, breathability, and layering. Start with a base layer of high-quality compression socks to prevent swelling and reduce the risk of Deep Vein Thrombosis (DVT) during 10+ hours of sitting. For the main outfit, "athleisure" remains the gold standard; think high-stretch joggers or soft leggings made of moisture-wicking fabric rather than stiff denim. On top, wear a soft T-shirt followed by a breathable mid-layer, such as a lightweight cashmere sweater or a technical zip-up hoodie. This allows you to adjust to the cabin's fluctuating temperatures, which often range from chilly to stuffy. Avoid belts, complex jewelry, or shoes with complicated laces, as these make the security process and mid-flight "shoe removal" much more difficult. Slip-on sneakers or "loafers" with plenty of toe room are ideal for foot swelling. Finally, always carry a large pashmina or scarf; it can double as an extra blanket or a makeshift pillow, providing a touch of luxury and comfort in the often-sterile environment of an economy or premium economy cabin.