Airlines Serving Duluth in August 1988

NORTHWEST AIRLINES (NW)
Aircraft Operated:
Boeing 727-100, Boeing 727-200, McDonnell Douglas DC-9-50
Cities Served:
Minneapolis/Saint Paul

NORTHWEST AIRLINK (OPERATED BY EXPRESS AIRLINES I) (NW/9E)
Aircraft Operated:
British Aerospace Jetstream 31, Saab 340
Cities Served:
Minneapolis/Saint Paul