The Collaborative International Dictionary of English v.0.48:

Voyager \Voy"a*ger\, n. [Cf. F. voyager traveling.]
   One who voyages; one who sails or passes by sea or water.
   [1913 Webster]

WordNet (r) 3.0 (2006):

voyager
    n 1: a traveler to a distant land (especially one who travels by
         sea)

Moby Thesaurus II by Grady Ward, 1.0:

46 Moby Thesaurus words for "voyager":
   adventurer, alpinist, astronaut, camper, climber, comers and goers,
   commuter, cosmopolite, cruiser, excursionist, explorer, fare,
   globe-girdler, globe-trotter, goer, hajji, jet set, jet-setter,
   journeyer, mariner, mountaineer, palmer, passenger, passerby,
   pathfinder, pilgrim, pioneer, rubberneck, rubbernecker, sailor,
   sightseer, straphanger, tourer, tourist, trailblazer, trailbreaker,
   transient, traveler, trekker, tripper, viator, visiting fireman,
   voortrekker, voyageur, wayfarer, world-traveler