flight path vs itinerary

flight path and itinerary both are nouns.

Word	Noun	Adjective	Verb	Adverb
flight path	Yes	No	No	No
itinerary	Yes	No	No	No

As nouns, itinerary is a hypernym of flight path; that is, itinerary is a word with a broader meaning than flight path:

flight path: a designated route followed by airplanes in flying from one airport to another
itinerary: an established line of travel or access

Other hypernyms of flight path include path, route.

As nouns, itinerary is a hypernym of flight path; that is, itinerary is a word with a broader meaning than flight path:

Other hypernyms of flight path include path, route.

flight path (noun)	itinerary (noun)
a designated route followed by airplanes in flying from one airport to another	a proposed route of travel
the path of a rocket or projectile or aircraft through the air	a guidebook for travelers
	an established line of travel or access