This study is to investigate air condition optimization for Boeing passenger economy class by field synergy principle. In this research, we discuss heat transfer, thermal comfort of different economy class positions by field synergy principle using turbulence flow model to simulate input wind temperature and position, input wind u, v, w, passenger temperature and thermal load. It is used COMSOL software to analyze wind velocity and temperature fields and comfort impact of economy class human. The results show that field synergy angle can indicate low angle increase better comfort of economy class/ cockpit passenger.