Coming from Brisbane, maybe Melbourne but would like to do some diving in Tonga before heading to Samoa. How should I travel between these islands? Has anyone flown or ferried recently? It would be around June/July. Cheers :)
Check government website for positions in flights, which are sold.
Those flights tend to visit all of the Pacific islands for conventions, sports, and recreation events, and are funded by wandering "businessmen" or hitchikers. ROYAL TONGA AIRLINES is the flight company
Unfortunately, there are no direct flights between these two islands. My recommendation would be to find a connection flight from Auckland.