Airlines Serving Mason City in August 1988

GREAT LAKES AVIATION (ZK)
Aircraft Operated:
Beech 99, Beech 1900
Cities Served:
Spencer, Waterloo

NORTHWEST AIRLINK (OPERATED BY EXPRESS AIRLINES I) (NW/9E)
Aircraft Operated:
British Aerospace Jetstream 31
Cities Served:
Fort Dodge, Minneapolis/Saint Paul, Sioux City, Waterloo