Figures released by airline Jetstar shows both it and Air New Zealand dipped from previous months in getting domestic flights away on time during December - when many were leaving on holiday travel.
According to Jetstar, 81.1 per cent of its own flights left within 10 minutes of their scheduled departure time last month, down from 89.1 per cent in November.
Air NZ had a lower performance record, with only 77.7 per cent of its flights leaving within the 10 minute time-frame during the month, according to the Jetstar data.
Air New Zealand spokeswoman Kelly Kilgour said the figures did not provide a fair comparison between the airlines because Air New Zealand's operations in New Zealand were on a much bigger scale than Jetstar's.
The data, which did not include cancelled flights, showed both airlines hit a low point of meeting the target 76.3 per cent of the time in June for Jetstar and July for Air NZ.