Prime Minister John Key says the United States has offered two helicopters to the New Zealand Defence Force to help evacuate people from quake-hit Kaikoura.
The choppers are from the destroyer USS Sampson, which is in New Zealand for the Royal New Zealand Navy's 75th anniversary.
Key told reporters at Parliament this morning the top priority was getting 140 remaining people out of Kaikoura, which has been cut off by landslips.
About 1200 people were trapped in Kaikoura after the quake, and 600 of them had been sheltering at a Civil Defence centre.
Four New Zealand Defence Force NH90 helicopters have been carrying them out, 12 at a time.
The Malaysia Air Force has also offered a helicopter to assist with evacuations, Key said, and Japan will be sending a P-1 maritime surveillance aircraft.
"So in terms of aerial support to get people out and to make sure that we get the provisions that are required in, we've got plenty of capacity now."
Finance Minister Bill English reiterated Key's estimate that the cost of quake repairs would be in the "billions".