Dear L-188 -
Needs to go West from Alaska, the other way around is longer.
Route it to Anadyr, Siberia, then Khabarovsk, then Japan, HongKong, Bangkok, and end up in Calcutta, Madras or wherever in India.
Looks to me like some 24 hours of air time.
Get all the planning from these handling companies in AC
Give me a week or two notice, I volunteer to go "along".
2,000 PIC in Lears - include 35/36 - and know that route very well.
... and Russian airspace and procedures...