Unticketed traveler
Else clues• 'Slug off?
• Accidental tourist?
• Certain freeloader
• Free rider
• Freeloading passenger
• Groucho, in Monkey Business
• Hide in a hold
• Illegal passenger
• Non-paying passenger
• One who gets a free ride
• One who goes free?
• Seagoing freeloader
• Shipboard hider
• Unexpected passenger
• A person who hides aboard a ship or plane in the hope of getting free passage