KATHMANDU - SILIGURI - KATHMANDU Direct Bus: You can book direct bus to Siliguri via online from Yatra Nepal. A bus service from Kathmandu and Siliguri in West Bengal has started. This Kathmandu - Siliguri bus service has been inaugrated by Nepal's Minister for Physical Infrastructure and Transportation Raghubir Mahaseth and Indian Ambassador Manjeev Singh Puri from Kathmandu on Monday evening. The bus departs from Kathmandu at 3 PM and reach Siliguri next day morning around 9 AM. The bus travel to Siliguri via Kakarvitta border. It is around 650 kilometers drive which will take approximately 18 hours.