Autopilot in planes is much closer to cruise control than it is to a Waymo. This is of course the purported rationale behind Tesla's use of the name for their L2 feature. Both require a human operator available and monitoring at all times.

The aeronautic equivalent of Waymo is a fully autonomous UAV. A human might be needed to set high-level goals, but all of the actual flying/driving is done by the machine.