Getting Between Stops
Honolulu (HNL) has nonstop flights from most major West Coast cities and several hubs farther east. Kona (KOA) has nonstops from Los Angeles, San Francisco, Seattle and a few others, so an open-jaw ticket into Honolulu and home from Kona usually works well.
The Honolulu to Kona flight takes well under an hour in the air, with frequent departures on Hawaiian Airlines. Allow half a day with the transfer, bags and car pickup.
On Oʻahu, rent a car only for the day you explore, or for the last morning if you drive to the airport. On the Big Island, a rental car is essential. Distances are long: Kohala to the volcano takes about three hours, Kona to Hilo about two. Gas stations are spread thin on the south and east sides. Read your rental contract, since some forbid driving the Mauna Kea summit road.
Where to Stay
In Waikiki, Halekulani is the quiet, polished classic, with ocean views from most rooms and one of the best sunset terraces in Hawaii. A few miles east, The Kahala Hotel and Resort trades walkability for a calmer beach.
On the Kohala Coast, Mauna Kea Beach Hotel was built by Laurance Rockefeller in the 1960s and sits on Kaunaʻoa Beach, with manta viewing from the point at night. Four Seasons Resort Hualalai has low-rise bungalows and a natural saltwater pool stocked with reef fish. Mauna Lani has ancient fishponds on its grounds and a relaxed, residential feel.
Near the volcano, Volcano House is the only hotel in the national park. Ask for a crater-view room. Volcano village has small cottages and bed-and-breakfasts at a fraction of Kohala prices. Top Kohala resorts often run $1,000 to well over $2,000 a night in winter (approximate).
When to Go
April to June and September to October are the best months for this route, with dependable sun on the Kohala Coast, fewer families and better rates. Both islands are warm all year, with coastal highs mostly in the low to upper 80s Fahrenheit.
Winter brings big surf to Oʻahu's North Shore, humpback whales off both islands from about December to April and the highest prices of the year over the holidays. Summer is calm for North Shore snorkeling but busy with school holidays.
The volcano runs on its own schedule. Lava glow is never guaranteed, so check the observatory updates the week before. The rest of the park is worth the visit either way. Hilo and Volcano are rainy, though usually in showers. Mauna Kea's summit can see snow in winter. Tours may cancel in bad weather.
Budget and Booking
Book flights and your Kohala resort first, then Halekulani and Volcano House, which has limited rooms. Reserve the manta snorkel and Mauna Kea tour for early in your Kohala stay, so you have a spare night if the weather cancels one.
On Oʻahu, Diamond Head and the USS Arizona Memorial both use advance reservations for visitors, so book before you arrive if you want them.
As an approximate guide, Waikiki's top hotels run about $700 to well over $1,000 a night. Kohala resorts run higher in winter. Volcano cottages cost far less, which helps the budget. Expect resort fees, parking charges and tours of a few hundred dollars for two. Mention your honeymoon when you book. Many resorts note it and some add a small gift or an upgrade when available.
Staying Comfortable and Safe
Respect the ocean. Swim at lifeguarded beaches, heed warning flags and stay out of the water when the surf is up. Winter swells on Oʻahu's North Shore are dangerous even close to shore.
Altitude is real on the Big Island. Mauna Kea's summit stands near 14,000 feet. Thin air can cause headaches and dizziness, so move slowly, drink water and descend if you feel unwell. Do not go up within 24 hours of scuba diving.
Volcanic gases and vog, a volcanic haze, can bother people with asthma or heart problems. Follow park closures and signs. Do not touch sea turtles or monk seals. Use reef-safe mineral sunscreen and bring repellent for evenings in Volcano and Hilo. If you're pregnant or hoping to be soon, check CDC travel health notices. Pack a warm layer each for the summit and the crater rim.
Make It Shorter or Longer
For an 8-day trip, keep two nights in Waikiki and four on the Kohala Coast, then visit the national park on a long day trip from the west side. It means a late night if you stay for the glow.
For 12 to 14 days, add three or four nights on Maui between Oʻahu and the Big Island, with Wailea as your base for the Haleakalā sunrise and the Road to Hana. Another option is replacing Oʻahu with Kauaʻi for a greener, quieter start.
Couples who want maximum rest can skip Oʻahu entirely and spend the whole trip on the Big Island, with six nights on the Kohala Coast and two or three near the volcano.