I want to show how to use only public transport from Sabiha Gokcen Airport to Sultanahmet Area. Unfortunately there is no direct bus from Sultanahmet to Sabiha Gokcen Airport.
But there are buses from airport to Kadikoy. So you can use boats
on boshphour to go Eminonu.
Firstly Get in E – 10 Public Bus on airport.. it is easy to find
them enterance, if you cant see just ask information office, or airport
staff around. This bus’ last destination is Kadikoy. So do not worry,
impossible to miss where to get out :D..
E-10 Bus details
SG-1 Bus Details
E-10 airport Bus will stop near sea side,
very close to Eminonu – Kadikoy Boats station. U will walk a few steps to
get in Boat for passing to Europian side. it take 15 – 20 minutes to go
Eminonu from Kadikoy in boat. If you get out from boat in Eminonu, you can walk a few minutes to Sirkeci Train Station.
Step3 – USE TRAM from Eminonu or Karakoy to SULTANAHMET
After You get out from boat, You need to use Tram for going to
Sultanahmet Area. Tram enterance a few steps away from Boat stations in
Eminonu or Karakoy. Karakoy seems better because walking distance is shorter. If you do not wanna use tram, you can use taxi to hotel door.
It cant be so expensive you are very close to your hotel now.
Alternative Way is Going To Taksim From Sabiha Gokcen. lets make it simple. Go to Taksim first and use Taxi to Sultanahmet.
SG -2 Public Bus goes to Taksim from Sabiha Gokcen Airport. you can use taxi from taksim to Sultanahmet.
SG-2 Bus Details