Round the world flight vs separate legs
If you are planning a gap year or the trip of a lifetime, you are faced with a number of decisions. Where should you go? Who should you travel with What should you bring? How much should you save? And should you book a round the world flight or arrange separate legs as you go?
Round the World Flights
A round the world flight is often the cheapest way to visit multiple countries and regions. If you shop around, you'll find excellent deals with the likes of the One World Alliance or the Star Alliance. STA Travel are probably the best travel agent to use to book these flights.
Some round the world tickets can be amended for a fee, but most of the cheaper ones cannot be changed and are non-refundable.
Booking independent legs
One major disadvantage of booking round the world flights is that you will have to commit to a set itinerary. If you have to change or cancel plans, you're likely to lose out on a substantial amount of money.
If you think your plans might change, or you just want the freedom that comes with deciding your next move as you travel, booking separate legs could be for you. However, be aware that this can be a very expensive way to travel if you don't book your tickets well in advance (perhaps defeating the point of freedom from an itinerary?).
Independent legs might also be for you if you plan to travel for over one year, as flight tickets are only valid for a year.
What's best for you?
If you are still unsure about booking a round the world flight or booking separate legs, consider talking to a travel agent. Usually travel agents don't gain much commission for selling scheduled flights (their profits are largely generated through hotels, charter flights and tours), so they should be able to offer your fairly neutral advice.