72530IUChicago O'Hare Intl. Air41.98 0.0//. 10400DLDüsseldorf Flughafen51.22 6.006. 72544IUQuad Cities Intl. Airport41.45 0.0//. 72532IUPeoria Flughafen40.67 0.0//. 72543IURockford Flughafen42.20 0.0//.