If you’re looking to travel Japan using Hokkaido International Airlines, one of the many Japanese airlines, here is some travel information that you might find interesting.

Hokkaido International Airlines (北海道国際航空株式会社, Hokkaidō Kokusai Kōkū Kabushiki-gaisha?), also known as Air Do (エア・ドゥ, Ea Du?) is a Japanese low-cost airline. Based in Sapporo, Hokkaidō, it operates between Tokyo and cities in Hokkaidō. Its main base is Tokyo International Airport in Ōta, Tokyo.

If you were looking for JAL please visit the Japan Airlines page.(source: wikipedia)