Izu Oshima is reached from mainland Japan by Tokai Kisen vessel or a New Central Airservice domestic plane. Tokyo Takeshiba Pier has high-speed jetfoil and overnight large-passenger-ship options; Atami also operates a shorter jetfoil route on listed dates. High-speed Tokyo trips may take around 1 hour 45 minutes on the actual published timetable, whereas the large passenger vessel is an overnight journey around 7 to 8 hours. These are examples, not fixed schedules: seasons and departures change. Island boats normally land at Motomachi Port or Okata Port, with the assigned port determined by sea conditions. Fly between Chofu Airfield and Oshima Camellia Airport by scheduled local aircraft when operating. Current vessel timetable; same-day island status; .

Domestic island airport served by New Central Airservice from Chofu Airfield near Tokyo. The published flight can be approximately 25 minutes on some current schedules, but timings and operations change with weather. No international arrival or immigration clearance is implied. Airline timetable.

Motomachi and Okata are the two practical northern bases. Oshima Bus serves several fixed routes, and the tourism association lists rental cars, bicycles, motorbikes and local taxis, but service may be infrequent outside port connections. Taxis should be arranged rather than assumed on arrival. Rent a car for multi-site south coast trips or coordinate the dive shop's pickup. Some operators, including Uminowa, collect only from Okata to Motomachi and do not cover Habu or other southern lodging. Island transport; Pickup scope.

Izu Oshima is part of Japan, so the ordinary Japanese passport, visa and immigration conditions apply, with no additional island immigration permit identified. Eligibility varies by nationality and purpose; for example, the Japan Ministry of Foreign Affairs lists the United States among short-stay visa-exempt nationalities, subject to its conditions. Check personal requirements with official Japanese government sources. Official visa exemption list.

Arrange tanks, weights and local shore permissions through an established island dive service; council rules require member-shop tanks and specify one SMB and dive computer per diver. Ask separately whether suits, mask, fins, computer, booties, underwater camera and facility use are priced in. High-speed ferries and island aircraft have different baggage allowances; verify heavy dive bags and cylinders with the carrier beforehand. Do not transport filled scuba cylinders without carrier approval. Plan a buffer before flying after diving and enough time for weather-driven ferry changes. Local gear rules; Carrier information.

Payments are in Japanese yen. Ferry tickets, rental vehicles and dive packages can be paid using the seller's accepted methods; confirm if cards, cash or advance bank transfers are required before leaving Tokyo. Examples of 2026 guided activity pricing are given under fees and permits, not as island-wide standardized rates.

Withdraw sufficient cash at major mainland transit hubs. Motomachi and other developed parts of the island have ordinary payment services, but specific island ATMs, foreign-card compatibility and opening hours were not independently verified in the reviewed sources. Ask your accommodation before arrival.

Izu Oshima follows eastern Japan's standard 100V, 50Hz electrical supply, commonly using two-flat-pin type A sockets. Check whether camera strobes, chargers and hair tools accept the voltage before using a plug adapter; an adapter does not transform voltage. JNTO electrical guidance.

Communications

Japanese mobile coverage generally exists around inhabited settlements, but remote volcanic slopes and some shore approaches may have weak reception. Exact carrier coverage and public Wi-Fi were not independently verified for each site. Download offline maps, save the hotel and dive service phone numbers, and carry a battery pack. In a marine emergency, have your operator communicate the named dive site, shore entry, vessel location if relevant, and time of last known contact.

Language

Japanese is the default operating language on the island. Some shops may handle English but no island-wide English-language guide guarantee was verified. Arrange an English-speaking guide and communicate medical or certification conditions when booking. Key Japanese terms include Motomachi (the western port area), Okata (the northern alternate port) and Keikai (the specialist west-shore dive).

Insurance

Choose travel and dive coverage that explicitly includes the type of activity booked, scuba depth and certification level, breath-hold snorkeling or coached skin diving as applicable, emergency oxygen, recompression treatment, and evacuation from remote islands. Standard domestic medical coverage may not cover specialized evacuation or nonresident travelers. DAN Japan provides a member emergency hotline; membership terms and insurance benefits must be checked directly. DAN Japan service.

Packing list

For scuba, bring a current certification card, logged-dive record, dive computer and SMB, with temperature-appropriate thermal protection: drysuits are often advised in winter and 5mm or thicker wetsuits may be useful in cooler transitional periods depending on the individual. Boots help on lava, and windproof warm layers help after surfacing. For snorkel or skin diving bring secure fit gear, rash guard, flotation or supervised safety gear, and sun protection. For topside bring hiking shoes, layers, waterproof jacket, charged phone, and swimwear for bathing facilities where required. Confirm local rentals before carrying bulky equipment by small aircraft.

Izu Oshima

Logistics

Quick Facts

Getting There

Logistics

Quick Facts

Getting There

Airports

Getting Around

Entry Requirements

Gear Logistics Checklist

Practicalities

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Electricity