Currently, August is the cheapest month in which you can book a flight from New Bern to Belize City Philip S.W.Goldson Airport (average of $363). Flying from New Bern to Belize City Philip S.W.Goldson Airport in March is currently the most expensive (average of $653). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.