The Collaborative International Dictionary of English v.0.48:
Excursionist \Ex*cur"sion*ist\, n. One who goes on an excursion, or pleasure trip. [1913 Webster]WordNet (r) 3.0 (2006):
excursionist n 1: a tourist who is visiting sights of interest [syn: sightseer, excursionist, tripper, rubberneck]