Halloween on Oʻahu falls on Saturday, October 31, in 2026. As checked October 8, Royal Hawaiian Center has posted costume-contest preregistration links for October 25, and Honolulu Zoo has announced an October 24 family evening. Keep those dates separate from Halloween night itself.

Choose one anchor: a Waikīkī family event, one of Aloun Farms' two pumpkin-patch weekends, Waimānalo Country Farms' harvest festival, or Hawaii Theatre's October 31 concert. Honolulu Haunts also lists nightly tours. Start with the date that fits your stay, then check registration or ticket availability before filling the rest of that day.

• Posted dates; confirm year: Aloun Farms' 24th Annual Pumpkin Patch announcement lists two October weekends at its Kunia country market, but does not print a year beside those dates. Confirm the 2026 season with the farm before committing.
• Posted season; check today's conditions: Waimānalo Country Farms lists a September 29 opening for its 2026 Fall Harvest Festival, with November 11 dependent on the sunflower bloom. Check current conditions before driving over.
• Confirmed: Hawaii Theatre's calendar lists WHO’S BAD – THRILLER NIGHTS on October 31.
• Available now: Honolulu Haunts sells downtown historic-district tours.
• Preregistration links posted: Royal Hawaiian Center lists trick-or-treating and its keiki costume contest for Sunday, October 25. The contest page now links to category-specific forms; its 2026 online cutoff still needs confirmation.
• Zoo program posted: Octo-BEAR-fest: Boos & Brews is scheduled for October 24, 5–9 p.m., on the Honolulu Zoo Great Lawn. Choose the event ticket that fits your group.

A posted event and an available ticket are different checks. Use each organizer's current booking link, and keep unresolved dates or registration cutoffs separate from confirmed details.

I’d base in Waikīkī if your October 31 plans are in Honolulu. You can keep Kalākaua Avenue and hotel calendars close, then use a local ride for Hawaii Theatre or downtown rather than build the night around a late cross-island trip.

If your plan depends on a Kalākaua Avenue traffic closure, wait for official confirmation. Check the City and County of Honolulu events calendar and current road notices again in mid-October. Build a plan that still works with regular vehicle access and crowded sidewalks.

For a Waikīkī stay, compare the walking route to your chosen event with your mobility needs and return-time plans. If you stay elsewhere, check the current TheBus routes and timetables against your hotel before October 31. A transportation plan beats guessing whether rideshare prices will rise.

The official Hawaii Theatre calendar places WHO’S BAD – THRILLER NIGHTS on October 31. The Michael Jackson tribute concert is a confirmed ticketed option for Halloween night in Honolulu.

If the show is your centerpiece, check its ticket options first, then compare lodging-to-theater routes and return transport before reserving a room. Recheck the event and ticket details before making another nonrefundable purchase around it.

For the broader month, our Oʻahu events in October guide tracks film, paddling, and festival dates that can fill the rest of the trip.

Honolulu Haunts' current tour page lists a downtown ghost tour plus a separate history-and-legend itinerary. The Honolulu Ghost Tour is listed nightly at 8 p.m.; the Island of the Gods itinerary is a separate noon departure. Confirm the time and meeting point for the specific tour you book.

Read the operator's description carefully. Decide whether you want ghost stories, a history visit, or both, and book accordingly. If royal history pulls you in, visit ʻIolani Palace during its published daytime hours. In Chinatown, check the hours for the individual businesses, galleries, or attractions you want to visit.

Costumes deserve the same filter. Hawaiian deities, warriors, and cultural practices are not Halloween props. Let the night tour be entertainment, and give the places and traditions behind its stories basic respect.

Check the booking calendar for your exact Halloween-week date rather than treating a nightly schedule as a seat guarantee. Book directly with the operator once your lodging is fixed, and verify the meeting point in the confirmation email rather than relying on an older article or screenshot.

Royal Hawaiian Center's 2026 trick-or-treating listing posts Sunday, October 25, noon–6 p.m. at participating merchants, while supplies last. The participating-store list is still pending. Its event header and main invitation agree on October 25, 2026, although an older subheading still says October 26, 2025; recheck the organizer's page close to the event.

The keiki costume contest is also listed for October 25 at The Royal Grove, for children from infancy through age ten and parent-child costumes. The posted afternoon runs 2–5:15 p.m. Check-in is 2–2:45 p.m., the contest starts at 3 p.m., and winners are announced at 5 p.m.

The contest page now links to preregistration forms for ages 0–2, 3–5 and 6–10, plus parent-child costumes. Use the appropriate form linked from that page and check its current availability. The deadline paragraph still names 2025, so confirm the 2026 online cutoff with the center instead of reusing that old date.

Preregistration does not replace event-day check-in: every contestant must check in on site by 2:45 p.m.

This is an October 25 plan, six days before Halloween. Families staying in Waikīkī can compare a walk to the center with a separate farm outing. Keep enough time for costume check-in instead of trying to fit both into one afternoon.

The Honolulu Zoo Society lists Octo-BEAR-fest: Boos & Brews for Saturday, October 24, 2026, from 5–9 p.m. on the zoo's Great Lawn. The program includes trunk-or-treat, live music, costume contests and lawn games. General admission and a brew ticket are separate options; the brew experience is for guests 21 and older with valid ID. Use the organizer-linked booking page for current availability, your group's total and arrival instructions.

The zoo also lists a separate Histories and Mysteries walking tour with Lopaka on October 18 and 25. Check that tour's own booking details before combining it with a family afternoon; it is a separate outing from the October 24 festival.

Aloun Farms' 24th Annual Pumpkin Patch announcement lists October 17–18 and October 24–25, from 8 a.m. to 5 p.m., at 94-488 Kunia Road, Waipahu, HI 96797. The announcement does not print a year beside those dates; confirm they apply to your 2026 visit before making plans. The farm lists self-pick pumpkins, sunflower fields, local produce, and vendors.

The announcement now lists $5 admission per person, with children two and under free, plus free on-site parking. Check booking requirements and the cost of pumpkins or other purchases with the farm before going.

The Waimānalo Country Farms 2026 Fall Harvest Festival page still lists its September 29 opening at 1 p.m. Check current operating conditions for the day you plan to visit. Its November 11 end date depends on the sunflower bloom. Daytime admission is first come, first served, with no reservations. Posted entry hours are Monday–Friday, 1–4 p.m., and Saturday–Sunday, 9 a.m.–4 p.m.; fields and market stands close at 4:30 p.m. Check the farm again before driving over, since weather or crop conditions can change the plan.

The farm labels its advertised admission prices as cash-discount rates: Monday–Thursday, $10 for kamaʻāina or military visitors with valid ID and $12 general admission; Friday–Sunday, $12 and $15 respectively. It says non-cash payments add a 3.5% service fee plus Hawaiʻi sales tax. Children two and under are free; pumpkins cost extra. Check the total for your group and payment method rather than treating the advertised cash rate as an all-in card price.

Confirm each farm's current visitor entrance before mapping a route from your hotel and choosing a farm day. If a farm event is your family anchor, I’d rent a car rather than squeeze the day around transfers. Compare current rates through Discount Hawaii Car Rental, then check the farm's page again the week before you go for weather or crop updates. If resort trick-or-treating matters, ask your hotel directly; no resort program is part of this article's confirmed list.

1. Choose the October 24 zoo evening, October 25 family afternoon, October 31 theater show, a farm visit, or a ghost tour as your anchor. Check whether your choice needs a ticket, registration, or walk-up entry.
2. Use Royal Hawaiian Center's posted preregistration links, then confirm its 2026 cutoff and participating merchants. For a zoo outing, check the separate event's ticket and arrival instructions. Ask your hotel directly about any resort program.
3. Confirm City road notices, TheBus service, meeting points, weather policies, and any age restrictions by mid-October.
4. Keep one evening uncommitted during the trip. Use it for a sunset or another activity you choose during the trip.

Save the confirmed pieces in My Trip and keep the pending items in your notes. The point is not to fill October 31 from breakfast to midnight. It is to keep one unverified event from steering the whole vacation.

Honolulu Zoo's October 24 evening and Royal Hawaiian Center's October 25 afternoon give families two different Waikīkī-area dates. Aloun Farms lists two October weekends in Kunia, with the event year still worth confirming directly. Waimānalo Country Farms keeps its end date dependent on the sunflower bloom. Hawaii Theatre's October 31 show and Honolulu Haunts' nightly tours suit a different evening plan.

Confirm Royal Hawaiian Center's registration cutoff and the farms' current conditions before committing. Check zoo event tickets and arrival instructions separately from a regular daytime visit. Save the activity you choose in your trip notes, keep transport practical, and verify the calendar again close to travel.