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Transport Minister Simon Bridges said last November the Philippines was an important market and more than 40,000 Filipinos live and and work here.
Nearly 14,000 Filipinos visited New Zealand in the year ended September 2014. In the same period, just over 19,000 New Zealanders travelled to the Philippines as their main overseas destination.
The amended agreement allowed Air New Zealand to begin its plans to code-share to the Philippines with Singapore Airlines as part of the partnership between those two airlines.
"The new code-sharing provision will help develop the market and build momentum towards possible direct flights in the future," Bridges said.
Philippine Airlines' rival airline Cebu Air has also talked early last year about flying to New Zealand.
Philippines Airlines operates a network of services within the Philippines as well throughout Asia, North America, Australia and the Pacific. It has more than 70 planes.