Originally Posted by
walduk70
I can also take early morning flight departing at 06.20 which absolutely not convenient for me but it give me 3 hrs more time, so all together I will have to spend 4hrs at the airport
Agree with
LTN Phobia, I strongly recommend this option. You will then have enough time to step out the airport to Yesilkoy. There is a marina, some local cafés and a good fish restaurant called Yuksel. 10min/20 Lira cab ride from the airport. Well worth it for a slice of more normal Istanbul life.