Swiss International Airlines is back on operations between Zurich and Dar es Salaam with the below schedule.

From July 14th to August 25th, on Tuesday
Departure   Zurich                         07:30
Arrival         Dar es Salaam           17:15 direct flight

From July 15th to August 26th, on Wednesday
Departure   Dar es Salaam            09:00 (check-in time between 06:00-07:00 am) 
Arrival         Zurich                          18.35 via Nairobi