ARPHS warns measles is infectious before the rash appears and is very easily transmitted through the air.
It is four times more infectious than influenza.
Dr Jackson said passengers who had caught measles from this flight could already be unwell and could experience symptoms anytime until Thursday March 6.
"Any passengers on that flight who feel unwell should phone their GP or call Healthline on 0800 611 116 for advice."
It was vitally important to call first before seeing a doctor because measles was highly infectious, and people with measles could infect others in the waiting room, she said.
ARPHS has confirmed more than 40 recent cases of measles in Auckland and over 1500 contacts traced.
An average of one in 10 cases needs hospital treatment.
Last week's case had no connection to the recent spate of Auckland cases, ARPHS confirmed.
ARPHS continues to urge people in the Auckland region to check their immunisation records to see if are fully immunised with 2 measles or MMR immunisations. `
"There is no treatment for measles - the only protection, and the best way to avoid its complications, is to be fully immunised," said Dr Jackson.