compression socks while flying

Let me just say... If you are flying, invest in compression socks!  I flew at 5 and 7 weeks and felt slightly off during the flight but nothing compared to the next time I flew at 30 and 31 weeks. I the way there I remembered my compression socks  and they worked so well I didn't think I'd need anything on the return flight. Big mistake. I felt my legs and feet swell up right away. My calves cramped most of the way. It sucked. Luckily it was a short flight.