see all comments
saidpur to bhadrapur(nepal) 125k:m: and saidpur to paro (bhutan)190 k:m:. but thakurgaon airport is very very important place. thakurgaon to nepal (bhadrapur) distance 70k:m: and thakurgaon to (bhutan)180k:m:only.so very cheap rate to nice journey.
I believe that landing at Paro is one of the most difficult in the world as u have to negotiate the valley and adjacent hills and sometimes turbulent cross winds