Then you are lucky....the airfare from St. Louis to Cancun can be purchased for $99 per person round trip (granted you have to be willing to travel fairly quickly, but it is possible)....the airfare from St. Louis to Belize City is usually priced at $650 PLUS per person round trip. It all depends on where you are coming from as far as the cost. If you can get there for 1/3 of the price for 2 people, that leaves a whole lot more disposable dollars for Belikins, diving, snorkeling, great food, etc. etc. etc.