There is no scheduled passenger airport on Chichijima or Hahajima. Reach Tokyo, then board Ogasawara Maru at Takeshiba Passenger Ship Terminal for Futami Port, Chichijima. The direct sea journey takes about 24 hours, and the ship runs on a dated sailing cycle, often about once per week outside busier seasonal patterns. The ferry company lists Takeshiba check-in as 09:30-10:40 for an 11:00 departure on published dates. Tokyo Haneda (HND) is only a mainland access airport, not a flight to the islands. Build a Tokyo overnight buffer if connecting from an international flight. Source: official timetable and Takeshiba boarding guide.

Haneda serves the mainland Tokyo approach to Takeshiba. No commercial flight operates from Haneda to Chichijima or Hahajima; continue overland to Takeshiba and then use the published 24-hour ferry. Haneda is a mainland approach gateway; the island visit still requires the published ferry crossing.

On Chichijima, the Omura/Futami Port area is walkable; there is a village bus to popular areas, limited taxis, and rental cars, scooters or cycles to prebook. Hilly roads and summer heat limit casual cycling. Hahajima transport is more limited; arrange lodging pickup, rental or guided tour in advance and do not assume the Chichijima bus or rental provider covers it. The only scheduled passenger connection between the islands is Hahajima Maru, not a continuous land route. Chichijima local transit; Hahajima visitor transport.

The Ogasawara Islands are part of Japan; a separate island entry visa is not listed. International visitors must meet Japan immigration rules for their citizenship, passport and status of stay; see the Japanese Ministry of Foreign Affairs. Respect land access restrictions even if you can legally enter Japan. Minamijima and Hahajima Sekimon need accredited guides; Iwo Jima is not an independently accessible stop on this visitor itinerary.

Most Chichijima dive shops can quote rental equipment, but rates and what is included differ. Bring certification card, logbook, personal mask and computer; ask about cylinders, weights, 5mm wetsuit, surface signaling and whether outer-island fuel adjustments apply. Carry motion-sickness medicine before traveling to Hahajima, which has no pharmacy according to its tourism association. The ferry has carry-on and checked-baggage rules; confirm specific sporting gear and compressed cylinders with the ship company before departure. Dry bags, repair supplies and any personal prescription medication are particularly important because replenishment depends on ship cargo. Hahajima FAQ; operator rates.

Carry physical yen. Lodging, some dive operators and some shops take cards, but Hahajima has fewer businesses and acceptance is not universal. Ferry and tour rates are quoted in yen; reconfirm operator payment and cancellation conditions.

Chichijima has a Japan Post Bank ATM and a local credit cooperative ATM; Hahajima has a Japan Post Bank ATM at the village branch / post-office area with limited opening hours. Withdraw cash before an island change if possible. Chichijima FAQ; Hahajima FAQ.

Japanese standard Type A two-flat-pin outlets and 100V power. This Tokyo-administered region uses eastern Japan's 50Hz convention; dual-voltage chargers are easiest. Three-prong foreign plugs may need an adapter. JNTO electrical guidance.

Communications

Japanese mobile networks can work in Chichijima settlements; coverage becomes patchy on mountain trails, boats and outlying coasts. On Hahajima, the tourism association names docomo, au and SoftBank in the settlement, but notes dead zones away from it. Some lodging provides Wi-Fi, and public Wi-Fi is listed for Futami port / Visitor Center and Hahajima Oki port waiting room. Verify your international plan, download offline maps and leave a plan with your guide. Chichijima connectivity; Hahajima reception.

Language

Japanese is the working language; English is not guaranteed on small local dive and hiking tours. The Chichijima supplier listing sometimes flags foreign-language guides; Hahajima Tourism Association warns that many local nature guides cannot provide foreign-language guiding. Confirm the language of safety briefings and any medical forms before making an activity reservation. Hahajima operators.

Insurance

Purchase travel insurance that explicitly covers recreational scuba to the planned maximum depth and, if relevant, guided skin-diving; confirm medical evacuation, recompression outside Ogasawara, weather interruption and missed onward connections. Some policies exclude wildlife swims, high-current dives or boat-related cancellations. Keep proof of coverage offline, together with emergency contacts, medication and dive log. The absence of island hyperbaric therapy makes evacuation coverage particularly important.

Packing list

Bring personal prescriptions, motion-sickness medication, sunscreen, sun hat, sunglasses, drinking bottle, sturdy trail shoes, snorkel or dive essentials, a rash guard, warm boat layer outside summer, dry bag, and offline ferry/tour details. A 5mm wetsuit or equivalent is common operator advice for much of the year; water comfort varies. Do not import soil, plants, animal materials or invasive seeds. Hahajima has no pharmacy and limited resupply, so pack for extra days if the outer ferry is disrupted. Hahajima practical advice; operator seasonal layers.

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