And bowing isn't either so again...not a first.
The trip is about diplomacy and obviously, a peace mission.
As far as the plane flight....doubt that it is anything more then an "air space" scenario....and no big deal at all and I doubt it is a first.
Read it.
https://www.scribd.com/article/348797815/Trump-To-Take-First-Official-Direct-Flight-From-Saudi-To-Israel