A travel buddy is most formally known as a travel companion, but there are many colorful synonyms and terms used depending on the culture and relationship. In more casual or slang contexts, you might call them a "sidekick," "pard," "pal," or "buddy." In Australia and the UK, terms like "cobber," "marra," or "offsider" are occasionally used to describe a trusted partner for a journey. For those who share a deep, long-term bond of exploration, "fellow traveler" or "comrade" might be used. In the digital age of 2026, many people also use the term "compatriot" or even "itinerant partner" for those found through travel-matching apps. Regardless of the label, the core concept remains the same: someone who shares the logistical burdens, the costs, and the memories of a trip. Whether they are a "soulmate" or just a "roommate for the road," having a travel companion is often the preferred way for many to explore new destinations safely and socially.