Apparently low passenger flights.
It will be interesting to see if any passengers get the virus. Considering everyone is meant to wear masks on board and the cabin air is meant to be replaced every few minutes. Is this good enough?
From my experiences flying during the pandemic. Aircrews always seemed to be doing the right thing with masks. Passengers not so much. All the standard bad mask habits. Not coving noses, fabric masks that probably don't do much etc. Regardless of that, you take them off to eat and drink during meal service.
The replacement of cabin air is likely to be the biggest safety factor aboard airplanes. Aerosol spread mainly happens by the virus particles being suspended in air, and the amount building up over time as an infected person breaths out. This is why outside, and places with good ventilation and air flow are low risk. The amount of virus in the air isn't allowed to build up. As it would in an environment like a car with the windows shut.
So crew members wearing masks, passengers partially wearing masks and the air constantly being exchanged should be a low-risk environment for transmission. If it turns out not to be the case, there are implications about the safety measures we've been told.