Effective April 14th 2014, visa on arrival in Turkey will no longer be available, all travelers must apply for an E-visa prior to departure from the USA and arrival in Turkey.
NEW TURKISH E-VISA
As of April 17, 2013, the Turkish electronic visa (e-visa) became available. Beginning April 10, 2014, the Turkish Ministry of Foreign Affairs will no longer provide visas on arrival to foreign travelers. As of April 10, travelers to Turkey must obtain Turkish visas from Turkish missions abroad or from the e-visa application system, depending on eligibility. Foreigners are required to present a six month validity passport in order to apply for a Turkish e-visa. Although the e-visa duration is for 180 days, foreigners cannot stay more than 90 days in Turkey within these 180 days. Foreigners who are planning to stay more than 90 days in Turkey should apply for a Turkish residence permit.
Please note that the e-visa is only valid when the purpose of travel is tourism or commerce. Other purposes, such as work and study, require regular visas given by Turkish embassies or consulates abroad.
For Turkey ETA application, please visit this link:
Register your trip on-line with the U.S. Embassy in this country. Millions of Americans travel abroad every year and encounter no difficulties. However, U.S. embassies and consulates assist nearly 200,000 Americans each year who are victims of crime, accident, or illness, or whose family and friends need to contact them in an emergency. When an emergency happens, or if natural disaster, terrorism, or civil unrest strikes during your foreign travel, the nearest U.S. embassy or consulate can be your source of assistance and information. By registering your trip, you help the embassy or consulate locate you when you might need them the most. Registration is voluntary and costs nothing, but it should be a big part of your travel planning and security.