Consumer NZ has provide some input:
Every ticket bought for an Air New Zealand flight to and from the US should be refunded as a result of cancellations due to the coronavirus, said Consumer NZ head of research Jessica Wilson.
"We've been in contact with the US Department of Transportation about this. It doesn't matter where you bought the ticket, it's a fact of the flight being the US.
"The refund obligation applies to all ticketed passengers on flights to and from the US, regardless of where the individual purchased their ticket or their citizenship."