By Air:
The Ataturk International Airport is the largest airport in Turkey and has planes that fly out to other, smaller cities. You must go through security checks when traveling to any other inland airport so you need to hurry and not take your time when in transit.

By Bus:
There is a daily bus travelling into Istanbul from Bucharest, Romania. There are other daily buses connecting major surrounding cities to other cities within Turkey.

By Train
Through there are a number of trains leading into a number of cities throughout Turkey, trains nowadays are primarily used for historic sightseeing and romantic getaways and trips.

By Car
Travelling into turkey by car is fairly easy, if you travelling from central Europe. You will need to get your International Insurance Card (Green Card) and if you plan on traveling into other parts of the Middle East, you will need to get a "carnet de passage" as well. The three major roads that lead into Turkey are E80, E87 and E90.