According to a representative at Maya-Island Air, new fares between International and Placencia will be $147 USD roundtrip ($73.50 one-way). The representative told us that roundtrip airfare between Placencia and Municipal will be $112 USD. However, he also said that one-way fares will be $62 USD. Since one-way fares are usually doubled in Belize, the Municipal/Placencia fare may not be correct.
Tropic has not yet announced it's new fares.