Istanbul is a key transport hub with Atatürk Airport and the new Istanbul Airport, facilitating both cargo and passenger air transport. The city also features a major seaport and a developed railway network. Major courier services like DHL, UPS, and FedEx operate actively in Istanbul, offering a variety of shipping options. Typical international delivery times range from 3 to 7 business days. It's important to consider customs features, such as the requirement for invoices and potential additional duties on imported goods.