From the link
Travel dates vary per route but include early March to mid-September 2023. Before booking tickets, potential customers should carefully check the full conditions. The prices listed above are one-way and do not include checked-in baggage. Jetstar is increasing the frequency of its sales, which is a good sign of airfares getting cheaper again as the travel industry continues to recover from the COVID-19 pandemic and competition heats up.
Those TT prices are low even by 2019 standard. but expect Air NZ will *not* match.