You can leave your luggage/baggage
at Istanbul's Atatürk International Airport in
the Emanet Bagaj (left
luggage/baggage check) office of either the Domestic or the
Arriving on a flight, after you pass Customs and emerge
from the secure area, turn right and
walk toward the end of the terminal.
The left luggage/baggage check office
is on the right-hand side. Your
luggage must be locked when you give it in
There are also Baggage Lockers in the Departures hall of the International terminal, at the far end of the Row B check-in desks near the toilets/WC.
If you have a longish layover at the
airport (four hours or more), you can
leave your luggage here and go
by Metro and tram into Istanbul to see a few
of the top
sights. Allow an hour to
go from the airport
to the city center, and another hour
to return to the airport by
Metro and tram.
Remember that you should be
at the airport for check-in two
hours before the departure of your
hours (90 minutes) before the departure
of a domestic
Luggage storage at the airport
is not cheap. You pay
the following amounts to store
for up to 24 hours:
—Plastic bag TL12
—Hand Luggage TL15
—Big Bag TL25
So if you leave a large suitcase on Monday and retrieve it on Thursday, the charge would be TL100 (about US$56 or €43).
(Your Istanbul hotel will probably agree to hold spare luggage for you for free, or a small charge. You might even arrange to have it transferred from the hotel to the airport by an airport transfer service so you don't have to go back to the hotel to retrieve it. More...)
Here's the relevant web page on the official Atatürk Airport website.
The left luggage office is open 24
hours a day. When you return to pick up your
baggage, you will pass through the
first security check to enter the terminal
and reach the Emanet Bagaj office.
There is luggage storage at Istanbul's
Bus Terminal, and self-service luggage
Istanbul's railroad stations,
but no train station
in Turkey has a left luggage/baggage
storage facility any more,