The most reliable months for planes taking off within the 10 minute timeframe was September for Jetstar, reaching the goal nearly 90 per cent of the time and in February for Air NZ with just over 87 per cent.
"In previous years, our on-time performance could be very good in some months, but was not consistent throughout the year. In 2013, reliability was a key focus for the airline and we performed much more strongly,'' Jetstar's New Zealand head Grant Kerr said.
House of Travel, which uses both airlines for its customers, said Jetstar's improved track record had made a big difference in the domestic market.
"Over the past 12 to 24 months, we have seen a movement from part of the business world to booking on Jetstar more than they were previously,'' the company's commercial director Brent Thomas said.
While Jetstar's reliability and customer service performance was on the rise, perks which came with Air New Zealand often meant it was still the preferred airline for many travellers.
"If it's the last [Jetstar] flight of the day and there's a problem, it is harder to fix it than Air New Zealand just because Air New Zealand has significantly more aircrafts to resolve the issue with,'' Mr Thomas said.
A monthly breakdown of the annual data for each airline last year showed Jetstar had the highest percentage of flights leaving within 10 minutes of their departure time for eight months of the year last year.
Air New Zealand had better results for three months of the year - with the carriers coming coming in equal for one month in the year.