Turkish Airlines starting next summer (7/12/16) is adding IST - IAD 3x weekly utilizing a A330-300 aircraft. Service eventually increases to 10x weekly.
FLT#177 IST 6:40am – 11:10am IAD
FLT#7 IST 1:40pm – 6:10pm IAD
FLT#178 IAD 12:40pm – 5:55am+1IST
FLT#8 IAD 11:25pm – 4:40pm+1IST
