72546IADes Moines Intl. Airport41.53 5.0//. 72547IADubuque Regional Airport42.40 0.0//. 10400DLDüsseldorf Flughafen51.22 3.012. 72557IASioux Gateway Airport42.40 0.006. 72548IAWaterloo Regional Airport42.55 0.3//.