I flew IST to Izmir on Atlas Jet a couple of weeks ago. Both the morning flight to Izmir, and the evening flight back were on schedule. Very comfortable A320's, flights were full both directions. Only 45 minutes in the air, but they served a hot cheese sandwich and drinks on both flights. Was able to check-in online 24 hours ahead and select good seats. Based on this one experince, I would have no hesitation flying them again.