AIR New Zealand flights out of Los Angeles International Airport are returning to normal after being grounded when a gunman opened fire.
One security officer was killed and at least six other people were injured in the shooting at LAX about 9.30am on Friday (local time).
The shooter came into terminal three, pulled an assault rifle out of a bag and opened fire.
He then went into the screening area and continued shooting, LAX police chief Patrick Gannon said.
All flights destined for LAX which had not left their origins were grounded.
Air New Zealand said this had been lifted and its operations in and out of Los Angeles were beginning to return to normal.
Air New Zealand flight NZ6 from Auckland touched down at LAX about 11.30am (local time) on Friday. It spent several hours parked on the tarmac before the 356 passengers on board were processed through customs.
Passengers on flight NZ2 had also been processed and new passengers were being checked in before the flight continued to London at 7pm, two hours late, Air New Zealand said.
Air New Zealand uses terminal two at LAX, which was evacuated.
Travellers were forced to hide in terminals or flee to the tarmac before authorities were able to locate and "neutralise" the shooter, alleged to be 23-year-old Paul Anthony Ciancia.
Witnesses said the man, wearing camouflage clothing, shot his way through the terminal three security checkpoint and entered the terminal where travellers were waiting for flights.
The Transportation Security Administration, which employs screeners and guards at airports, confirmed one of its employees had died.
Ciancia was wounded in a shootout with police and taken into custody.
US authorities allege he was holding an AR-15 semi-automatic rifle and was loaded up with ammunition.
"There were more than 100 rounds that could have literally killed everybody in that terminal today," Los Angeles Mayor Eric Garcetti said.
Ciancia is recovering from multiple gunshot wounds to the chest under guard in a nearby hospital.