The flight from Lima is about one hour and forty five minutes. On the other hand, In case you are flying from Cusco to Iquitos, then the flight is in excess of 5 hours very long and there is normally a stopover in Lima, and, certainly, it can be dearer. https://perujungletours84825.jts-blog.com/27398038/amazon-tours-peru-no-further-a-mystery