JuanPabloC

I have been to Bali twice and I want to explore other Indonesian islands. I have heard Lombok, Flores, and the Gili Islands are popular but I am not sure where to start. I have about three weeks and I am comfortable with some rougher travel. What are the must-see places that are not too overrun with tourists? Also wondering about the logistics - are domestic flights reliable and affordable? Any advice from people who have done island hopping in Indonesia would be really helpful.