I'm not sure if this question is on-topic here. Perhaps it should be asked on the Aviation SE. However it's not about practical details (I have no intention of doing such thing:). It's just supposed to be a scene of my story.
So I wonder if it's possible that some light aircraft flies unnoticeably, suppose, from the Pacific coast to somewhere in the Middle West. Unnoticeably for the appropriate authorities, I mean.
It seems that my original post was misleading to some extent. So I have to add some clarification.
First I didn't mean a drone or any unmanned vehicle, only manned aircraft, to be specific, 1-2-seat airplane.
Furthermore, "unnoticeability" of the depicted flight is not an objective. In other words the aircraft's crew has no intention to make its flight unnoticed, it just happens unintentionally.
Actually this flight doesn't matter much for the plot. I just need to bring a character, which is a sort of alien, from somewhere in Pacific ocean to somewhere in the middle of the U.S. Eventually he has to be taken by government. But before this, I'd like him to spend some time among ordinary people. So this flight may be considered as a plot device.