By Air
Istanbul is the main entry point. Istanbul Airport (IST), on the European side, handles most international traffic and is one of the busiest hubs in the world — Turkish Airlines alone flies to well over 300 destinations. Sabiha Gokcen Airport (SAW), on the Asian side, handles budget carriers including Pegasus Airlines and is often used for domestic connections.
Direct flights from most of Europe are plentiful. From North America, Turkish Airlines flies direct from New York, Los Angeles, Chicago, Boston, Washington, and Toronto to Istanbul; flight time from the US East Coast is around 10-11 hours. From Australia and Southeast Asia, connections via Gulf hubs or Kuala Lumpur are common.
Other major airports: Antalya (AYT) receives a huge volume of charter and package-holiday flights from Europe, especially in summer. Izmir (ADB), Ankara (ESB), and Bodrum (BJV) also have international connections.
If your destination is Cappadocia, fly to Nevsehir (NAV) or Kayseri (ASR) — both are served by Turkish Airlines and Pegasus from Istanbul, and the flight takes about an hour.
By Land
From Europe via Bulgaria/Greece: The main overland route from Western Europe enters Turkey at Kapikule (Bulgaria) or Ipsala (Greece) near Edirne. Regular long-distance bus services connect Istanbul with Sofia, Athens, Bucharest, and other European cities. The journey from Sofia takes around 8-10 hours.
From Iran: Buses and shared taxis cross at the Gurbulak/Bazargan border near Dogubeyazit. The crossing is straightforward; Iranian tourists are common in eastern Turkey.
From Georgia: The Sarp border crossing on the Black Sea coast connects Batumi with Hopa (Turkey). Regular buses run between Tbilisi and Turkish cities.
From Iraq: The Ibrahim Khalil/Habur crossing is the main border between Turkey and the Kurdish Region of Iraq. Used by commercial traffic and some travelers; check the security situation before planning this route.
Borders with Armenia and Syria are currently closed.
By Sea
Car ferries connect Italian ports (Ancona, Bari, Brindisi) with Cesme near Izmir and with Istanbul's Yenikapi terminal — the crossing takes 2-3 days. In summer, Greek islands close to the Turkish coast (Samos, Chios, Rhodes, Kos, Lesbos) have daily ferry connections to nearby Turkish ports like Kusadasi, Cesme, Marmaris, and Bodrum. These are short crossings — often under an hour — and very convenient for combining Greece and Turkey.