One of the cheapest and simplest ways to do that is with a round-the-world airline ticket. Several airline alliances offer round-the-world tickets, more commonly known as RTW tickets. The perks of ...

Asiana Club Star Alliance Round-the-World Ticket: You can redeem 140,000 miles in economy or 230,000 miles in business for a round-the-world itinerary with up to seven stopovers of 24 hours or more.