Whether you should combine Australia and New Zealand into a single itinerary depends entirely on your available time; as a general rule, you should only do so if you have at least three to four weeks. Both countries are much larger than they appear on a map—Australia is roughly the size of the contiguous United States—and trying to "see it all" in 14 days often leads to "airport fatigue," where you spend more time in transit than enjoying the scenery. A combined trip is excellent for travelers coming from far away (like Europe or North America) who want to maximize their long-haul flight investment. In a three-week "Highlights" tour, you could reasonably cover Sydney, the Great Barrier Reef, and Uluru in Australia, before hopping over to New Zealand for the Southern Alps and Milford Sound. however, if you only have two weeks, it is much more rewarding to focus deeply on just one country. Focusing on New Zealand allows for an epic road trip through both islands, while focusing on Australia allows you to explore the vast differences between the tropical north and the temperate south. In 2026, with increased regional flight costs, a deep dive into one nation is often more budget-friendly and less stressful.