Yes it is free and it generally works.
Also you can go to the restaurant above Tropic Air check-in by the observation deck. They have their own WiFi and it works well. Enjoy an adult beverage while checking emails and such.
Article Number: 566
Author: Thu, Jan 17, 2019
Last Updated: Thu, Jan 17, 2019
Author: Marty Casado
Online URL: https://ambergriscaye.com/help/article/is-wifi-available-at-the-belize-international-airport-566.html