FYI, I've seen comments on some other boards that Continental (now with two daily flights a day to Belize City) is offering some attractive deals on fares -- something like US$189 R/T (plus taxes) from Houston. I don't know if these fares are available through travel agents or just on CO's Web site. If you're going to Belize, it may be worth checking out.
--Lan Sluder
Belize First Magazine
Web edition at
http://www.turq.com/belizefirst/