In the long run, it is determined by your travel itinerary as you may visit the jungle in advance of or soon after your tours in Cusco. From Lima to Iquitos you'll have a lot more flights readily available and doubtless also less expensive types than from Cusco to Iquitos. https://dallasuyaze.total-blog.com/indicators-on-peru-amazon-tours-from-cusco-you-should-know-51662670