Air New Zealand (ASX:AIZ, NZE:AIR) group capacity rose 4.1% year on year in March, according to a Monday filing with the Australian and New Zealand bourses.

Long-haul available seat kilometers (ASKs) rose 2.5%, while domestic ASKs increased by 3.4%, per the filing.

Short-haul international ASKs rose 7.6% year on year, supported by the addition of two new A321 aircraft.

Group year-to-date underlying revenue per available seat kilometer rose 2.7% from the prior year.

The airline carried 1.6 million passengers in March, about the same as the previous year, while the passenger load factor rose to nearly 86%, up from around 83%, the filing added.