Ministry of Transport manager governance Robert Anderson confirmed his officials have held discussions with WDC regarding the possibility of a new airport but said talks regarding government involvement were preliminary in nature.
Any decision on Crown funding would be subject to ministerial and Cabinet approval, he said.
"The ministry is currently undertaking policy work around regional air connectivity, which will consider whether government should have a role in supporting regional airports infrastructure and/or air services."
The Crown is a 50 per cent owner in five regional airports— Taupō, Whangārei, Westport, Whakatāne and Whanganui— through a deed that dates back to the 1960s.
National Party deputy leader MP Dr Shane Reti, from Whangārei, said if the airport has to move by factors beyond anyone's control, then he fully supported it.
"In the last 10 years, Air New Zealand has made it clear it needs a longer runway so the need to move is not driven by Whangārei interests. There has to be a business case in order to attract government funding."
At 1097 metres, Whangārei Airport runway is the shortest of any provincial airports in New Zealand and even shorter than Kerikeri which is 1190m.
WDC has ruled out Port Nikau as a possible location, saying although it was a great area and closer to the city, significant and expensive reclamation would be required.