Many convenience groceries and packaging services sell prepaid calling cards in denominations up to $50; for international visitors, these can be the least expensive way to call home. Many public pay phones at airports now accept American Express, MasterCard, and Visa credit cards. Local calls made from pay phones in most locales typically cost 35¢. Most long-distance and international calls can be dialed directly from any phone. For calls within the United States and to Canada, dial 1 followed by the area code and the seven-digit number. For other international calls, dial 011 followed by the country code, city code, and the number you are calling.
Calls to area codes 800, 888, 877, and 866 are toll-free. However, calls to area codes 700 and 900 (chat lines, bulletin boards, "dating" services, and so on) can be very expensive -- usually a charge of 95¢ to $3 or more per minute, and they sometimes have minimum charges that can run as high as $15 or more.
For reversed-charge or collect calls, and for person-to-person calls, dial the number 0 then the area code and number; an operator will come on the line, and you should specify whether you are calling collect, person-to-person, or both. If your operator-assisted call is international, ask for the overseas operator.
For local directory assistance ("information"), dial 411; for long-distance information, dial 1, then the appropriate area code and 555-1212.
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.