This is too bad. Istanbul is an amazing city.
Can't say I blame Delta though, given the uncertainty I am sure bookings are down (and unlike TK, DL doesn't have transit passengers to help with the loads).
Bookings must be down to CDG, too.
Flew SEA-CDG last week and then CDG-SLC yesterday. Both planes maybe 2/3 full at the MOST. Coming home may have been even 1/2 full. 😕