WAs just looking on bangkok airways webb site for a trip to either chaing mai or to Phnom penh,, while the flight to cm is 1hr 25 and the flight to pp is 1hr 15 there is a vast differance in the price , The cheapest fare to cm return is 2700bht while to pp on a shorter flight is 7190 bht return . To my mind a bit of an over kill on price for bangkok airways