Originally Posted by
MSPeconomist
I don't think DL 3665 is a DL operated TATL flight. They tend to have a two or three digit flight number, while DL 3XXX would generally be a codeshare operated by a carrier other than DL. Could this be a DL operated codeshare sold under an AF or KLM flight number?
probably not relevant here, but there are a number of domestic DL 3xxx mainline flights appearing in recent schedules