WordNet sense 1 (the path followed by an object moving through space):

trajectory

WordNet sense 2 (a stairway (set of steps) between one floor or landing and the next):

flight of stairs, flight of steps

WordNet sense 3 (decorate with feathers):

fledge

WordNet sense 4 (an instance of traveling by air):

flying

WordNet sense 5 (the act of escaping physically):

escape