The nearest airpot is at Pantnagar about 48 km away. Flights connect Pantnagar to Delhi, which is connected by air to all major domestic and international destinations. You can hire cabs to take you to the sanctuary.
The closest railhead to the sanctuary is at Haldwani, the city closest to Nandhaur Wildlife Sanctuary. Trains run between Haldwani and Delhi, which is connected by rail to major destinations in the country. Avail a cab to take you to the sanctuary.