Tours to Madagascar in December are not very popular. This allows you to save money, because airlines reduce the cost of tickets many times. And if at the height of the season you can fly to the island for 1400-1500 USD with all connections, then in the beginning of winter because of wet and hot weather few people fly to Madagascar. Tickets can fall in price by 500-600 USD, which can be successfully spent on vacation.
Nevertheless, a vacation in Madagascar in winter can be eventful. Many festivals happen during this time. Go to Antananarivo, the capital of Madagascar. You can also try to visit Nozi-Bi, as the most "promoted" sea resort of the country. But in winter time it is not too comfortable there.
Prices for vacation in Madagascar in December will please those who want to save money. Especially if you book tickets and accommodation a few months before the trip. The average price for tours to Madagascar in December will be 1500-1700 USD for one with flight and accommodation. If you don't know which cities and resorts you can go to for your budget, use the tripmydream service. It will find the most favorable tours to Madagascar in winter.