Air New Zealand chief strategy, networks and alliances officer, Stephen Jones, who signed for the company, said the agreement strengthened the ties between Argentina and New Zealand and "built on the great rugby-playing tradition that we share".
The agreement, according to Air New Zealand, will see the parties work together on "mutually beneficial business engagements".
Watch: Air NZ touches down in Argentina:
This includes helping boost demand for off-peak travel from New Zealand and Australia to Argentina.
"The new route will make it possible to foster and develop tourism as well as open up new business and investment opportunities for businesspeople in both countries," Meyer said.
Associate Tourism Minister Paula Bennett spoke during the signing ceremony, although the Government was not a signatory.
The New Zealand Government very much supports this agreement and obviously we're very thrilled that Air New Zealand are now flying direct to Buenos Aires and what that means for movement of our peoples between the two countries.
Bennett couldn't seem to help herself from bringing up former All Black Richie McCaw during her speech to Argentine media and officials.
Watch:Richie McCaw welcomed to Argentina:
"I feel I should be very clear that he's here to visit and you may not keep him...we do not want to see him play for Argentina. So I will make sure he's on the flight home at the end of the week."
Jones gave the Argentine Tourism Minister a wooden koru and in turn was presented with a horse whip.
"It's for the horses, so we're told," Bennett said.
Watch: Richie McCaw on long haul travel now he's no longer an All Black:
Hamish Fletcher is hosted in Argentina by Air New Zealand.
