Two flights were paid for by Parliament using Civil List funds. Parliament justified the spending, saying it is required to return the candidates to Rarotonga, and is in accordance with government regulations.
A flight was chartered on July 16 at a cost of $16,000 to provide transportation for candidates from Penrhyn and Pukapuka, along with their partners.
It is believed Democratic Party leader Wilkie Rasmussen, Member of Parliament-elect for Penrhyn Willie John, and Pukapuka MP-elect Tekii Lazaro were on the flight.
A second plane was booked by Parliament on July 19 for candidates and their partners in Manihiki and Rakahanga - including caretaker Prime Minister Henry Puna and Rakahanga MP-elect Toka Hagai.
CINews requested a list of the passengers from Air Rarotonga, however, the airline said it does not disclose the information to third parties.
The charter flights have come under fire from at least one MP, criticising the arrangements and saying alternative planning could have saved costs.