Expired U.S Visa: Travel requirements for JFK-Delhi via Istanbul ( Turkish Airlines )

Does any one has idea whether one can fly through Turkish Airlines from JFK-Delhi with a 4 hr transit in Istanbul on a expired H1B visa. Though extension is approved.


Did you get the answer to this query, I have a similar scenario my visa expired in Sept 2014 and i got my petition approved till May 2016. I want to travel in Nov 2015 via Istanbul.