The nearest airport is SKE - Skien Geiteryggen, located 15.7 km north west of Brønnstad.
Other airports nearby include TRF - Torp (33.8 km north east), KRS - Kristiansand Kjevik (134.9 km south west), OSL - Oslo Gardermoen (147.9 km north east), VDB - Fagernes Leirin (218.4 km north),