Australia and New Zealand in one trip: how long you actually need
They look adjacent on a map and they are not. What a combined trip costs in days, which pairings work, and the seasons that decide the order.
onesim team
Most people who go to this part of the world go once. That is the reason the two-countries-in-two-weeks version keeps being attempted, and the reason it keeps disappointing.
Here is the arithmetic, so you can decide honestly.
The distances nobody budgets for
Sydney to Auckland is a three-hour flight — Amsterdam to Athens. That leg is not the problem.
The problem is inside each country. Sydney to Cairns is 2,400 km. Auckland to Queenstown is a two-hour flight, not a drive. And getting to either country from Europe or North America costs you two days each way, including the day the calendar eats crossing the date line.
So a "two-week trip" from Europe is really eleven days on the ground, and splitting eleven days across two countries with a flight in the middle gives you five and a half each. That is one region per country, at a jog.
| Days on the ground | Sensible shape |
|---|---|
10 or fewer | **One country. One region.** Sydney and the Blue Mountains, or the South Island loop |
12–14 | One country, two regions — or both countries, one region each, at a pace |
18–21 | Both countries properly: two Australian regions and the South Island |
28+ | Both, including the North Island or the Australian centre |
The threshold is about eighteen days on the ground. Below it, adding the second country costs you more than it gives.
If you have two to three weeks, do this
Fly into one and out of the other. An open-jaw ticket — into Sydney, out of Christchurch or Auckland — costs about the same as a return and saves you a whole backtracking leg. Every airline that flies the route sells it.
The pairings that work:
- Sydney + the South Island. The city and the landscape, the most contrast for the fewest flights.
- Melbourne + the South Island. If you would rather have coffee, laneways and the Great Ocean Road than a harbour.
- Queensland + the North Island. Both subtropical-to-temperate, both about water; reef and rainforest, then geothermal Rotorua and the Coromandel.
What does not work in three weeks: Sydney, Cairns, Uluru, Auckland and Queenstown. That is five flights and a fortnight of airports.
The seasons run together, which helps
Both countries are in the same hemisphere, so you do not have to trade one off against the other — but they are not the same climate.
- December to February. Australian summer: perfect for Sydney and Melbourne, brutal in the centre, wet and stingery in tropical Queensland. New Zealand at its warmest and busiest.
- March to May. The best overall window. Australia's east is warm and quiet; New Zealand has settled autumn weather and its best colour.
- June to August. Dry season in tropical Queensland — the time for the reef — and winter in New Zealand, which means skiing or a cold, empty, beautiful South Island.
- September to November. The other good window: spring in the south, the tail of the dry in the north.
March–April and September–October are the answers if you want both countries at once.
Costs, so there are no surprises
Both are expensive by European standards and New Zealand is the pricier of the two for food. Budget for:
- New Zealand's International Visitor Levy, NZ$100 per person, paid with the NZeTA.
- Australia's ETA, AUD 20, through the official app.
- Domestic flights, which are the single largest controllable cost. Book the internal legs as soon as the dates are fixed.
- A hire car or campervan in New Zealand, where public transport between the places you want is thin.
Booking the flights
Three things make a measurable difference to the price and the pain.
Open-jaw, always. Into Sydney, out of Christchurch or Auckland, on one ticket. It costs roughly the same as a return and saves you a backtracking leg that would otherwise eat a day at each end.
Use the stopover. Almost every route from Europe stops in the Gulf or Asia anyway, and most carriers let you break the journey for a night or more at no extra fare. Singapore, Dubai, Doha, Hong Kong and Bangkok are all a free extra city if you ask for it at booking. Doing it on the outbound leg also takes the worst edge off the jet lag.
Book the internal legs separately and early. Domestic flights within Australia and across the Tasman are cheap when booked well ahead and brutal at short notice. They are also where the luggage rules change: an international ticket's generous allowance does not carry over to a low-cost domestic hop, and Jetstar's and Virgin's cabin-bag limits are weighed at the gate.
One calendar quirk to plan for: flying west to east across the date line you arrive the same day you left, and going the other way you lose a day entirely. It is not jet lag, it is arithmetic, and it is the day people forget to count when they book leave.
The one that trips people up
Crossing the Tasman is an international flight in both directions: full check-in times, biosecurity at both ends, and different luggage rules from your domestic legs. New Zealand's biosecurity is as strict as Australia's — the hiking boots you wore in the Blue Mountains will be inspected and may be cleaned.
Leave three hours, not ninety minutes, and do not book the Tasman crossing on the same day as a long domestic leg.
