The best pricing can be found in the month of September. Prices to Belize City from Niagara Falls average $537. You can even find prices in September for less than $537, as users have found deals to Belize City from as low as $427. The month of March appears to be one of the more expensive times to travel to Belize City from Niagara Falls. Flying in the targeted month can save you up to 46%.