Chuo Bus has a direct ski bus which operates from Sapporo to Niseko Ski area. Here is their web page, but unfortunately they only have a  Japanese page. https://www.chuo-bus.co.jp/sightseeing/ski/sap-niseko.php I’ve translated some part of that page which you want to know. Here are some screen shots. Fare between Sapporo and Niseko Ski Area adult: 2,650 yen (one way), 4580 yen (round trip) child: 1,330 yen (one way), 2,290 yen (round trip) Where to get on / off There are 7 bus-stops in Niseko Ski Area. Ikoino Yuyado Iroha (いこいの湯宿いろは) Niseko Northern Resort Annupuri (ニセコノーザンリゾートアンヌプリ) Niseko Annupuri (ニセコアンヌプリ) The Green Leaf … Continue reading How to get a Direct Bus From Niseko to Jozankei and Sapporo