The nearest airport to Hokkaido University is the New Chitose Airport (CTS). After landing, you can make your way to Sapporo by:
Sapporo is accessible by the extensive JR train network. If you are traveling from other parts of Japan:
Inter-city buses connect Sapporo to various regions in Hokkaido. The Sapporo terminal is near the Sapporo Station, from which you can reach the university on foot or by local bus.
Once in Sapporo, you have several options: