The nearest airport is ACH - St Gallen Altenrhein, located 65.3 km west of Köllen.
Other airports nearby include FDH - Friedrichshafen (66.9 km west), INN - Innsbruck (82.4 km south east), OBF - Oberpfaffenhofen (82.8 km north east), FEL - Fuerstenfeldbruck Furstenfeldbruck (90.8 km north east),