WordNet (r) 3.0 (2006):

wanderlust
    n 1: very strong or irresistible impulse to travel [syn:
         wanderlust, itchy feet]

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "wanderlust":
   Wanderjahr, afoot and lighthearted, bumming, discursion,
   divagation, drifting, errantry, flitting, gadding, hoboism,
   itineracy, itinerancy, nomadism, peregrination, pererration,
   ramble, rambling, roam, roaming, rove, roving, straying, traipsing,
   vagabondage, vagabondia, vagabondism, vagrancy, wandering,
   wayfaring