The Government would also support the mayors in their bid to persuade Air New Zealand to enter code share agreements with other airlines. That would allow people connecting to Air New Zealand flights to take advantage of discounted fares.
"Our discussions with Air New Zealand have been positive to date, but there are a number of issues which we need the support of the Government with so our endeavours are successful," Mr Carter said.
The other mayors in the group hail from Whakatane Opotiki, Masterton and Buller.
Meanwhile, Far North Holdings is still negotiating with four airlines vying to replace Air New Zealand on the Kaitaia-Auckland route.
The contenders include Tauranga-based Sunair and Auckland's Inflite.
The other two are not known.
The national carrier's last flight from Kaitaia will be on April 28.