Honolulu in 4 Days on a Budget (With Daily Costs)
Four days: all three of Honolulu’s reservation-only sights
Four days is the point where all three of Honolulu’s timed-reservation sights fit: Pearl Harbor, Diamond Head, and now Hanauma Bay. This plan keeps the same spine as the 3-day version , Waikiki, then Pearl Harbor, then Diamond Head, and adds a fourth day at Hanauma Bay. With a fifth day to spare, the 5-day plan adds the Bishop Museum and a luau night.
Book these before you go
- Reserve Pearl Harbor on recreation.gov , up to 56 days out, about a $1 fee.
- Reserve Diamond Head entry on gostateparks.hawaii.gov , up to 30 days out, $5/person plus $10/vehicle parking.
- Reserve Hanauma Bay , only 2 days out, a window that opens at 7am HST and can sell out in minutes; closed Monday and Tuesday.
- Book a Hanauma Bay snorkel tour with entrance included on GetYourGuide if the 7am booking window doesn’t fit your schedule.
- Check Waikiki hotel rates on Booking.com before you land.
| Day | Focus | Reservation | Est. cost |
|---|---|---|---|
| Day 1 | Arrival, Waikiki Beach, sunset hula show | None | $0 beyond transfer and hotel |
| Day 2 | Pearl Harbor, downtown Honolulu | Pearl Harbor, 56 days out | About $1-8 in fees, plus food |
| Day 3 | Diamond Head hike, Ala Moana | Diamond Head, 30 days out | $5-15, plus food |
| Day 4 | Hanauma Bay, Kaka’ako | Hanauma Bay, 2 days out | $25-28, plus food |
Day 1: land in Waikiki and keep it free
Fly into HNL and take TheBus routes 20 or 303 for $3 on a HOLO card, or a taxi/rideshare for $35-50. Check in and budget for resort fees ($45-61/night) and self-parking ($45-75/night) up front. Spend the afternoon on Waikiki Beach, free to swim or sunbathe on, with reef-safe sunscreen required by Hawaii law. Catch the free hula and torch-lighting show at the Kuhio Beach hula mound at sunset.
Day 2: Pearl Harbor and downtown Honolulu
Arrive an hour before your reserved slot; the USS Arizona Memorial program is free, runs 45 minutes, and only the recreation.gov booking and the National Park Service’s separate $7/day parking charge cost anything. Walk the free grounds of Iolani Palace in the afternoon, then into Chinatown for a plate lunch, $12-18.
Day 3: Diamond Head hike and Ala Moana
Hike Diamond Head early: 0.8 miles one way, 1.5-2 hours round trip, $5/person plus $10/vehicle parking, reserved up to 30 days ahead, or skip the parking fee by taking TheBus. Cool off at Ala Moana Beach Park in the afternoon, then browse Ala Moana Center; a poke bowl runs $12-18.
Day 4: Hanauma Bay and Kaka’ako
Hanauma Bay’s reservation window opens only 2 days ahead at 7am HST, so book it as soon as your dates are locked, not the night before. Entry runs $25/person 13 and older plus $3/vehicle parking, and the preserve is closed Monday and Tuesday for reef recovery, so build your four days around whichever open day (Wednesday through Sunday) lands on this slot. Last entry is 1:30pm, so plan a morning visit. In the afternoon, wander Kaka’ako’s street art and waterfront park, then stop at Leonard’s Bakery for a malasada, $1.75-4.
Why is Hanauma Bay closed some days?
Monday and Tuesday closures are reef-recovery days, not holidays or maintenance windows; the preserve limits public access twice a week to let the coral and fish population recover from the roughly 1,400 daily visitors it allows the rest of the week. Plan your four-day dates so Hanauma Bay’s day falls Wednesday through Sunday, and book the 2-day-out reservation the moment that date is fixed.
Can you do Diamond Head and Hanauma Bay back to back?
Yes, and this itinerary does exactly that on days three and four. Both are morning activities, Diamond Head’s trail entry closes at 4:30pm and Hanauma Bay’s at 1:30pm, so neither requires an early alarm on the other’s day, and the two together cost $30-33 in entry and parking fees combined.
Lock in Hanauma Bay’s date first, since its 2-day booking window means you can’t reserve it far in advance like the other two. For the fuller list of Honolulu’s cheap and free options alongside these paid sights, see the budget guide .