I'll echo the questions raised by Q54701 and WillTravel. I can be productive at an airport, too, but I need 1) a somewhat quiet work area and 2) enough room to set up my computer comfortably. It's very rare anymore to find #2 outside of security. Behind security I can find #1 on light travel days by seeking out an unused gate area. Or a restaurant at off hours. But during peak travel everywhere is crazy except in a lounge, and even there it's not always a sanctuary.