Making a reservation for a group on SunExpress is subject to specific terms and conditions. Although passengers must form a group of 10 individuals traveling on the same flight segment to book a flight ticket. Moreover, on SunExpress group booking flyers have to complete their payment 30 days prior to departure. Apart from that, for international flights departing more than 91 days out, 20% needs to be paid within 21 days of confirmation as a deposit. For more information about the booking process and the guidelines of SunExpress, flyers can read the blog provided by Group Travel Airlines.