The trip follows the Australian government's Pacific "Step Up" announced just over a year ago and is part of efforts to show Australia is taking the Pacific seriously.
Mr Morrison is scheduled to arrive in the Vanuatu capital Port Vila today in what's also being seen as a push to stem China's growing influence in the region.
The prime minister told the ABC the visit was part of "our refocusing of our international efforts on our own region, in our own backyard and making sure we can make the biggest possible difference."
