On package vacations, single travelers often are hit with a “single supplement” in addition to the base price. To avoid it, you can agree to room with other single travelers or find a compatible roommate from one of many roommate-locator agencies.

The IndependentTraveler.com (www.independenttraveler.com) is intended to help those traveling alone to plan their trip, and includes a forum where you can ask for advice from other solo travelers.

Many reputable tour companies offer singles-only trips. Backroads (www.backroads.com; tel. 800/462-2848) offers “Singles + Solos” active-travel trips to destinations worldwide.

The British company One Traveller (www.onetraveller.co.uk; tel. 0044/1760-722-011) arranges holidays for mature singles, including the eight-day “Croatia’s Dalmatian Coast” tour.

Contiki (www.contiki.com) arranges tours for ages 18 to 35, including a “Croatian Island Hopper,” which attracts a mix of nationalities and plenty of singles.

For more information, check out Eleanor Berman’s classic “Traveling Solo: Advice and Ideas for More Than 250 Great Vacations, 6th Edition” (Globe Pequot), updated in 2008.

For more information on traveling single, go to www.frommers.com/planning.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.