Air New Zealand (NZE:AIR, ASX:AIZ) will launch three new non-stop international routes, from Christchurch to Singapore, Tokyo and Perth, starting in late October, according to a Wednesday statement.

The new routes are part of agreement with Christchurch Airport to expand international connectivity into the South Island, and follow the airline's 787 aircraft returning to service after grounding due to engine maintenance issues.

Air New Zealand and Christchurch Airport have entered a memorandum of understanding for a long-term partnership under which they will align planning and network development, as well as support sustainable growth and enhanced international connectivity for the South Island.

The first Christchurch-Singapore service will depart on Oct. 28, followed by Christchurch-Narita on Nov. 28 and Christchurch-Perth on Nov. 30, subject to regulatory approval.