Original sentence: Air Nippon (Hakodate, Kushiro, Memanbetsu, Nakashibetsu, Wakkanai).All Nippon Airways.Hokkaidō Air System (Hakodate, Kushiro).Its scheduled airline service is limited to turboprop flights to other cities in Hokkaidō: larger aircraft use New Chitose Airport, 45 km south of the city.is an airport located 6 km north of the city center of Sapporo, Japan
Edited sentence: Its scheduled airline service is limited to turboprop flights to other cities in Hokkaidō: larger aircraft use New Chitose Airport,  south of the city.is an airport located  north of the city center of Sapporo, Japan