Things to do · O‘ahu, Hawaii, US

Things to Do in O‘ahu

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Getting there
Most visitors fly into Daniel K. Inouye International Airport in Honolulu, which sits about nine miles (roughly 15 km) from downtown. Direct flights from the U.S. mainland, especially California and the Pacific Northwest, are common, with connections through Seattle or Los Angeles. For those on the islands, inter‑island flights land at Lihue and Kahului, while the main highway (H‑1) links the airport to the city and coastal resorts.
Who goes
O‘ahu welcomes roughly ten million tourists a year, drawing a mix of beach‑focused families, adventure seekers, and culture‑curious travelers. The busiest period runs from mid‑December through March, when the island feels lively and crowded, while the quieter stretch falls in late spring and early fall, offering a more relaxed atmosphere.
Budgeting
A careful traveler can expect to spend around $80‑$120 per day (≈ $25‑$35 USD) for meals, modest lodging and local transport, whereas a comfortable budget sits near $180‑$250 daily (≈ $55‑$75 USD). Food and accommodations typically absorb most of the cost; saving on beach activities by renting a board from a local shop rather than booking tours can stretch your dollars further. Estimate →

  1. USS Arizona Memorial

    attraction · 4.7 rating

    A memorial at Pearl Harbor marking the sunken battleship USS Arizona and honoring service members killed in the 1941 attack. A profound historical site for reflection and learning.

  2. Diamond Head State Monument

    attraction · 4.6 rating

    An iconic volcanic tuff cone with a summit trail delivering panoramic views of Waikiki and the coastline. Travelers hike up for the sweeping vistas and the famous crater landscape.

  3. Diamond Head Summit Trail

    trail · 4.6 rating · $5

    The official 1.6-mile round-trip trail to the summit of Lēʻahi (Diamond Head), climbing 560 feet through switchbacks, stairs, a tunnel, and historic coastal-defense structures.

  4. Hanauma Bay Nature Preserve

    park · 4.4 rating · $25

    A protected volcanic bay known for reef snorkeling; non-residents need timed entry and should reserve ahead.

  5. Waikiki Beach

    beach · 4.2 rating · Free

    Oʻahu’s best-known urban beach, with gentle swimming areas, surf breaks, sunset views, and Waikīkī dining close at hand.

  6. Pearl Harbor

    attraction · 5 rating · Free

    The historic harbor complex commemorating the December 7, 1941 attack, anchored by the visitor center, memorials, and naval museums.

  7. Pearl Harbor National Memorial

    attraction · 4.7 rating

    A memorial commemorating the 1941 attack on Pearl Harbor, including the USS Arizona Memorial over the sunken battleship. Travelers visit to honor the fallen and learn WWII history.

  8. Kailua Beach Park

    attraction · 4.8 rating

    A scenic white-sand beach with turquoise water on Oahu's windward coast, popular for swimming, kayaking, and windsurfing. Travelers come to relax and enjoy calm, family-friendly waters.

  9. Iolani Palace

    museum · 4.6 rating · $26.95

    Official residence of Hawaii's monarchy, a restored National Historic Landmark known for its opulence and history.

  10. Byodo-In Temple

    attraction · 4.7 rating

    A serene replica of a 900-year-old Japanese Buddhist temple set at the base of the Koʻolau Mountains. Travelers come for its tranquil gardens, koi ponds, and photogenic architecture.

  11. Manoa Falls

    waterfall · 4.6 rating · Free

    A popular rainforest walk through lush Mānoa Valley to a tall seasonal waterfall.

  12. Lanikai Beach

    attraction · 4.6 rating · Free

    A celebrated windward beach with pale sand, clear water, and views toward the Mokulua islets.

  13. Honolulu Zoo

    zoo · 3.9 rating

    A zoo in Waikiki near Kapiolani Park, home to tropical and Pacific wildlife across landscaped exhibits. A popular family outing for animal encounters in an outdoor setting.

  14. Bishop Museum

    museum · 4.5 rating

    Hawaii's premier natural and cultural history museum, housing extensive collections of Hawaiian and Pacific artifacts. Travelers visit to learn about the islands' heritage and science.

  15. Makapu'u Point Lighthouse Trail

    trail · 4.6 rating · Free

    Popular paved coastal hiking trail with spectacular views of the Kaiwi State Scenic Shoreline.

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