this is the question, Our local guides are being asked in all private tours in istanbul, to go to the airport from sultanahmet and taksim or to go sultanahmet or taksim from the airport is very easy and very fast as well. Istanbul is a huge city with 20 millions people and this bring a traffic problem and thats why our local guides of Real istanbul Tours, during their group tours and private tours , they use public transportation.
To go to sultanahmet ( hagiasophia, Blue mosque, Topkapi Palace ) from Airport you can follow the sign of Metro in airport and you can get an istanbul card, tokens or 3 pass tickets… Airport is the last station for that reason all metro goes to same direction, all you need to switch to tram in Zeytinburnu station and take the tram to direction to the kabatas, and get off from the sultanahmet tram station, roughly will take 4o minutes, you need to two tokens and if you like to take a cab, it should take about 50 trl
To go to taksim from airport you can take again metro and get off in the last station, Yenikapi and switch to the green line and get off in taksim metro stop, if your hotel is close to the Galata area, better to take stop Sishane stop. approximately will take 40 minutes and you need 2 tokens and cab should charge around 50 – 60 turkish liras, Also there are havatas buses goes to taksim in front of exit
As Real Istanbul Tours , we do provide private transfers also if you have layovers in airport, we do provide pick up by our local guides , layover tour and itenary can be talked and depends on you and also the time you arrive, then drop off to the airport Local guide istanbul, Emre Real Istanbul Tours