Getting to Turkey
Turkey's primary international gateway by air is Istanbul 's Ataturk International Airport . Ankara 's Esenboga Airport handles a comparatively limited selection of international flights, and there are also direct charters to Mediterranean resort hot spots like Antalya in the peak summer and winter seasons. In 2005 customs at Istanbul international airport was rearranged to the effect that one is now required to go through customs and "enter the country" there, rather than first travel to a regional destination and pass customs there. Luggage will generally travel to the final destination without further ado, but on occasion you may have to point it out to be sure it will be transported on. The information given by flight attendants in the incoming flight may not be adequate so until the procedure is changed (it is supposed to be only temporary) it is wise to inquire on Istanbul airport. Since one must pass security again for any inland flight, it is advisable to hurry and not spend too much time in transit. There are also some other regional airports which receive a limited number of flights from abroad, especially from Europe and especially during the high season (Jun-Sep).
You can still travel from Europe to Turkey by train, although these days this is more of historical or perhaps even romantic interest than fast or practical. The famed Orient Express from London now travels no further than Vienna, but you can take the daily TransBalkan from Budapest (Hungary) via Bucharest (Romania), a two-night journey with a scheduled 3-hour stop in Bucharest. 1st/2nd class sleepers and couchettes are available, but the train lacks a restaurant car so stock up on supplies. From/to Greek stations there are two daily services, from Istanbul to Pythion every morning and from Istanbul to Thessaloniki every night. There are also daily trains to Istanbul from Sofia( Bulgaria ). Due to the collapse of a tunnel on the railtracks, all trains between European destinations and Istanbul is suspended as of June 2010 until further notice.
From Central Europe, getting to Turkey is not too difficult. In any case you'll need your International Insurance Card (Green Card). Pay attention to "TR" not being canceled and be sure your insurance is valid for the Asian part of Turkey, too. Otherwise you will have to buy Turkish car insurance separately.
A carnet de passage is not necessary unless you intend to move on to Iran, which requires you to have a carnet de passage.
National driving licences from some of the European countries are accepted. If you are not sure about your situation, obtain an international driving licence beforehand.
There are also other border gates (unlisted here), from all the countries Turkey has a common land border with (except Armenia), leading to secondary roads passable with a car.
From Bucharest there is a daily bus to Istanbul at 4PM for 125 Lei. There are also several daily buses from Constanta, Romania and from Sofia, Bulgaria and from there you can get connections to the major cities of Europe. Another possibility is the bus from Athens in Greece via Thessaloniki. You may also find smaller bus companies offering connections to other countries in the Balkans.
Many people arrive in Bodrum on one of the hydro-foils or ferries that run from most of the close Greek islands into the port. A fairly pretty way to arrive. While many of the lines that originate and terminate in Istanbul have recently been discontinued (due to bankruptcy), there are still summer departures direct to Eastern Italy.
Other main towns on the Aegean coast have ferry connections with the nearest Greek islands as well. Trabzon, a major city on the eastern Black Sea coast has a regular line from/to Sochi on the Russian Black Sea coast. Mersin , Tasucu , Anamur and Alanya on the Mediterranean coast has ferry links with either Famagusta (with Mersin) or Kyrenia (with others) in Northern Cyprus.