This is the most expensive thing on most Hawaii itineraries, and whether it is worth it depends less on the helicopter than on which island you are standing on when you book it.
The honest test is simple. Does the flight show you something you cannot otherwise get to? On one island the answer is emphatically yes. On the others it is more of a preference.
Kauaʻi: yes
Something close to three quarters of Kauaʻi has no road access at all. The Nā Pali cliffs, the interior of Waiʻaleʻale with its wall of waterfalls, the upper reaches of Waimea Canyon and the valleys behind the north shore are simply not reachable on foot in a day, or at all.
A helicopter is the only way to see the middle of that island. That is a genuinely different proposition from a scenic flight, and it is why Kauaʻi is the one island where people who are broadly sceptical of tours still come back saying it was the best thing they did.
The alternative worth knowing about is a Nā Pali boat trip, which is cheaper, longer and shows you the coast from the water rather than the interior from above. Some people do both. If you can only do one and the weather is settled, the flight covers more.
Hawaiʻi Island: it depends on the volcano
When Kīlauea is erupting and the flight path is open, this is extraordinary and there is no equivalent from the ground. When it is quiet, the same flight is a tour over lava fields, rainforest and waterfalls, which is lovely and is not a $350 experience for everyone.
Check the USGS Hawaiian Volcano Observatory for current activity before you book rather than trusting a tour listing, which has an obvious interest in the answer. Book late in your trip rather than early, so you can decide with real information.
Maui and Oʻahu: a nice flight
On Maui the flight covers the West Maui mountains, the interior valleys and often the Hāna coast, and the West Maui interior in particular is properly hard to reach otherwise. It is beautiful. It is also an island where you can drive to a great deal of what you want to see.
On Oʻahu you get Waikīkī, Diamond Head, the windward coast and the Koʻolau range. It is a scenic flight over an island with excellent roads. Nothing wrong with it, but it is a treat rather than an unlock.
What to check before you book
The operator's safety record. Hawaii air tours have had fatal accidents, and the record is public. Search the operator's name in the NTSB aviation accident database. Ask whether they operate under FAA Part 135, which carries stricter maintenance, training and weather requirements than Part 91. A good operator answers that question without hesitating.
Doors on or doors off. Doors off is better for photographs and colder, louder and more exposed. Everything must be tethered, and loose items including hats and phone cases are not allowed.
Seating. Seats are assigned by weight for balance, not by who booked first, so a window is not guaranteed unless you pay for a no-middle-seat or premium option. If the photographs are the reason you are going, that upgrade is the one worth buying.
Weight disclosure. Every passenger is weighed or asked to declare accurately. Some operators charge a comfort seat above a threshold. Better to know before the morning of the flight.
Who should not book it
Anyone who gets motion sick should think hard. It is smoother than a small plane in still air and considerably worse in the turbulence that builds over ridges by late morning. Early flights are usually calmer.
Anyone uneasy in small enclosed spaces or about flying generally will spend an expensive hour being uneasy. There is no getting off partway.
And there is a cost question that is not really about money. For a family of four this is $1,000 to $1,600 for one hour. On Kauaʻi many people would still say yes. On Oʻahu that is a lot of other trip.
A word about noise
Tour helicopter noise is a real and long-standing grievance for residents, especially on Kauaʻi, where flights pass over neighborhoods and valleys all day. That is not a reason not to go, and it is worth knowing that the thing you are enjoying is something other people live under.
Operators who stick to agreed routes and altitudes exist and are worth choosing. It is a fair question to ask when you book.
So, worth it?
On Kauaʻi, yes, for most people, and book it early in your stay so weather gives you a second chance. On Hawaiʻi Island, yes when the volcano is active and it is a judgment call when it is not. On Maui it is a treat. On Oʻahu it is a nice hour.
Whichever island, take the first flight of the morning. It is calmer, clearer and much less likely to be canceled.
