Commercial, passenger, or private.
Either one of these but private falls into a different category.
Usually private aircrafts are owned by very rich people who have nothing better to spend their money on. :\
And, Neil, is it not commercial if it is widely known and advertised?
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I believe the adjective you’re looking for is “passenger.”
Neither “commercial” nor “private” implies carrying people rather than cargo.
Commercial or Private (like Leer Jets) – as opposed to cargo aircraft.
Commercial airline