Jetstar plans to increase domestic New Zealand flights by almost 50%, creating at least 100 new jobs.Jetstar will add two new A3-20 aircraft to its New Zealand fleet by early next year to allow an extra 39 weekly flights between Auckland, Christchurch, Wellington and Queenstown.The airline is adding extra flights between Auckland and Queenstown before Christmas.The Australian-owned carrier says as well as creating jobs it will bring down prices.Air New Zealand is also planning to increase its domestic flights but Jetstar says it’s confident there will be sufficient demand for the added capacity.Jetstar Group chief executive Bruce Buchanan said the airline is committed to delivering more low fares and frequencies on New Zealand’s high-traffic routes.New Zealand chief executive David Hall said the new flights offer timely support for NZ tourism and regional economies, especially with the Rugby World Cup in 2011.