In Winter ...
Ambergris Caye, Belize
Visiting a Caribbean island in winter can be glorious -- and pricey. Instead, go a little farther south to an island off the coast of beautiful Belize in Central America for a phenomenal scuba diving vacation that's more affordable than you might have thought.
Airfare Tip: Online travel agencies are a convenient resource for searching for flights. But before booking it's important to check with the individual airlines for additional discounts. According to Airfarewatchdog.com, this is especially the case for some international carriers that don't share their fare data with third parties.