The transit at Istanbul was awful. There were no signs once we left the airplane so we went the wrong way, the staff were very unhelpful in directing us to the domestic terminal which we eventually found after running around the airport 1 hour and half. We would have missed our next flight had it not been delayed. We were the last to board during the last call to the gate. Were left wheezing in our seats from all the running, a horrible and stressful experience.