Today’s travel often involves long flights in cramped seats that can be very hard on your circulation. Wearing socks with mild compression will comfortably help increase circulation and reduce the risk of swelling. The compression steadily squeezes your legs, helping your veins and leg muscles move blood more efficiently. They offer a simple, safe and economical way to keep blood from stagnating. Others things that will help you during long flights include getting up and stretching every hour while flying, staying hydrated and flexing your ankles every 30 minutes.