Kids under 10 get 30 to 50 percent off. For a private family trip with two adults and two kids, the cost of a 2-week holiday combining Bali and Singapore would be about 10,000 to 12,000 USD. International airfares are not included. For a couple's trip, it may cost about 5,500 USD to 7,000 USD for 2 weeks. Serene Bali with Nusa Penida Family Package. 7 Days/ 6 Nights. Hotels, Flights. ₹57,243. Relax in Gili with Kuta & Seminyak Family Package. 8 Days/ 7 Nights. Hotels, Flights, Transfers. ₹50,923. My Bali My Way Family Package. sFDS.