BudgetTravel

All the rates and packages are accurate and available as of press time, but these trips usually sell out quickly.

Additional fees

Any service fees, security and passenger-facility charges, and visa costs generally aren't included; neither are hotel, car rental, and airport taxes. Such charges vary widely--expect $300 (and higher) for spots where visas alone cost $100 or more.

Timing

Most rates are based on midweek airfare; weekend travel can raise the price $100 or more each way. Be flexible.

Singles

Rates are per person, for two people traveling together and sharing a room. The single supplement is the fee levied for going alone.

Itinerary changes

You can often add nights: The extra-night rate is per person, double occupancy. Most operators will bundle excursions, meals, and tours for an additional cost.

Research

Hotels will be clean and safe, offering the basics for a basic price. The lowest-priced ones may not be centrally located. As with any serious purchase, you should do some research. Many websites--IgoUgo and ZoomAndGo, for example--post reviews of hotels and cruises. If you don't like what you see, upgrades to better hotels are almost always available.

Airfare

Where flights are included, we list prices from several airports ("gateways"), but we don't have space to show them all. Operators may arrange connections from other airports, but don't assume they'll always give you the best rate. It might make more sense to book your flights using frequent-flier miles or a low-cost airline. Also, check to see how many connections you'll have to make.

All-inclusives

All-inclusive resorts usually cover lodging, three meals daily, entertainment, and nonmotorized water sports. Some also include alcoholic drinks and gratuities.