The Better Business Bureau of Wisconsin is offering a variety of tips to avoid getting duped.
The BBB recommends booking a trip using a reliable travel agent. The agency's background can be checked on the BBB's website.
It also says travelers should get details about the trip in writing, use a credit card for payment and consider purchasing travel insurance.
The BBB also cautions about accepting deals that appear to be too good to be true, and to be wary about being told that a trip has been won.