Diamond Head reservations

Do you need a reservation to hike Diamond Head?

Yes, unless you hold a Hawaii ID. Every out-of-state visitor needs a timed entry reservation, and drivers need a parking reservation too.

The system started on 12 May 2022. Hawaii residents with a valid state ID still walk in free with no booking, though parking for them is not guaranteed on busy mornings. The official FAQ closes two loopholes people ask about: friends from the mainland travelling with a resident still need their own reservation, and someone who has just moved to Hawaii needs one until their state ID arrives.

The point of the system was crowd control. When it launched, the state said it wanted to thin out the narrow trail, ease the queue of cars at the access tunnel and push visitors toward quieter afternoon hours (Maui Now, April 2022). It works, mostly. The trail is still busy in the morning, but it no longer jams the way it did.

How much are Diamond Head tickets in 2026?

$5 per person for non-residents and $10 per car for parking. Children 3 and under are free, Hawaii residents are free, and the park takes credit cards only.

The full fee table from the Division of State Parks:

There is no military discount; the FAQ says so directly. Two people arriving by car pay $20 in total, a family of four on foot pays $20 too. Payment happens online by credit card when you book; there is nothing to pay at the gate.

Should you book entry only or parking?

Book parking only if you drive in. Everyone arriving on foot, by bus, by bike or by rideshare books an entry-only slot, which is cheaper and lets you stay until closing.

The two reservation types behave differently. Parking slots last two hours from 6 a.m., and you must drive out by the end of yours (the state allowed up to two consecutive slots when it launched the system). Entry-only slots are one-hour arrival windows: you walk in during that hour and can stay until the park closes. Here is how each way of arriving maps to a booking:

The trap is the parking clock. Two hours covers the hike for most people, as the state plans for 1.5 to 2 hours on the trail, but a summit queue or a slow descent can push you over. If you're travelling as a family with small children, the entry-only route by rideshare removes the pressure completely.

How far ahead can you book, and which slots sell out?

Up to 30 days ahead. The 6 a.m. and early-morning slots go first; afternoon slots rarely sell out but are much hotter.

Go State Parks opens each date 30 days out and warns that the park gets busy at certain times of day and may sell out. The sunrise slot is the one people fight for: Hawaii Guide reports the 6:00 to 7:00 a.m. windows can be gone within hours of release. Midweek dates are easier than weekends.

My advice: book the moment your flights are fixed, and pick 6 or 7 a.m. if you can. By 10 a.m. the exposed upper trail is hot, and one guest on the Go Tours shuttle who started at that hour called it a bit too late. Afternoon slots (the last one is 4 p.m.) are the easiest to get and fine on a cloudy day. The trail is the same; only the heat changes.

The cheapest way in when the booking site shows no morning slots: park fees, a Waikiki pickup, water and a trail map for $35.

★ 4.8 · 3 hours · from $35

Explore the Kaimana hike shuttle → Tour details

What if Diamond Head reservations are sold out?

Book a tour that includes the ticket. Tour companies use a separate commercial booking system, so their seats can be open when the visitor slots are gone.

The state runs a separate PUC (commercial carrier) reservation system for tour operators, and it threatens to ban any company caught using the visitor site for up to a year. In practice that means a tour can still have space on a morning the public slots are full. One Kaimana guest found parking sold out for the morning, and the tour got them in anyway. A Go Tours guest who booked late after a cruise wrote: "I found out on Viator there was a tour that provided us with everything that we needed just in 24 hours."

Every tour below includes Diamond Head entry. Prices are per person, from-prices in October 2026:

Compared with a $5 ticket, the shuttle tours look expensive. They are really a ride plus the reservation; you hike on your own. The tour-or-DIY maths is in tour or do it yourself.

The simplest fix for a sold-out date: your entry is booked for you, the trolley collects you in Waikiki, and you get about two hours at the crater.

★ 4.8 · 2.5 hours · from $40

Explore the Diamond Head shuttle with entry tickets → Tour details

Can you change or cancel a Diamond Head reservation?

You get a refund if you cancel at least 3 days before your date. Changes are possible until midnight Hawaii time the day before, subject to availability and a possible $5 fee. No refunds for weather unless the park closes.

The Go State Parks rules are stricter than most tour policies:

• Refund: up to 3 days before entry. Inside that window, the money is gone.
• Change: until midnight HST the day before, if the new slot has space. A $5 cancellation fee may apply, and a cheaper change is only refunded if you ask 3 or more days out.
• Weather: rain or wind is not a reason for a refund. Only an official park closure is.
• Late or no-show: no refund, and arriving more than 30 minutes into your slot can get you turned away.

The tours on this site (except the non-refundable Makapuu combo) cancel free up to 24 hours before, and the operator offers a new date or a refund if it calls off a trip for bad weather. For a trip with a shaky schedule, that flexibility is worth more than the few dollars you save booking direct.

What happens when you arrive at the gate?

You show the QR code from your confirmation email at the entry booth by the Kahala Tunnel, inside the first 30 minutes of your slot. Then you walk or drive through the tunnel to the crater floor and the trailhead.

There is one way in: the road tunnel off Diamond Head Road at 18th Avenue, on the inland side of the crater. Drivers queue in the lane; walkers use the separate pedestrian walkway. Keep the QR code on your phone as a screenshot (signal can be patchy) or print it. Once you're inside, the restrooms, a water refill station (guests mention it) and the trailhead are on the crater floor.

The clock rules, from the state park page:

• The park opens at 6 a.m. The last reservation is 4 p.m., with entry until 4:30 p.m.
• Everyone must be out by 6 p.m.
• Closed on Christmas Day and New Year's Day. The holiday closures post has this season's dates.

Which Diamond Head tickets should you avoid?

Anything that sells you an extra without the entry. The $11 audio-guide tour and the Waikiki Trolley Green Line both leave you to book the park reservation yourself.

Search for "Diamond Head tickets" and you will see an "Official Diamond Head Self-Guided Narrated Hiking Tour" for about $11. It is an audio device and a map, picked up at the visitor center inside the crater. Park entry, the reservation and parking are not included, and it is rated 2.7 out of 5, with more one-star reviews than any other score. Plenty of buyers thought they had bought a ticket. We don't list it.

The Waikiki Trolley Green Line ($22) does stop at the crater trailhead, but its own listing says to book your Diamond Head trail passes in advance. It is non-refundable, and several 1-star reviews describe late runs that skipped the crater. If you ride it, book an entry-only slot first and pick a morning time.

Last: the only official booking site is gostateparks.hawaii.gov. A site that resells a $5 slot for $20 is not doing you a favour.

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