Honolulu
The only way to see the Ko'olau cliffs, the sacred Halawa Valley, and the Jurassic Park filming valley from above. Blue Hawaiian is the most reputable operator. Earphones provide narration throughout.
Book at bluehawaiian.com or through hotel activities desk. Departs near Honolulu Airport. From $250–350/person. Request a window seat.
Tours cancelled in rain or low cloud ceiling — book early in your trip in case of reschedule.