Japan Transocean Air
A Japanese regional carrier within the Japan Airlines Group, linking Okinawa’s islands with major cities across Japan.
About Japan Transocean Air
Japan Transocean Air is a scheduled Japanese regional airline headquartered in Naha, Okinawa Prefecture. It was founded in 1967 as Southwest Air Lines and began operations the following year, adopting its current name in 1993. The carrier is part of the Japan Airlines Group, with Japan Airlines as its principal shareholder, and uses the JTA identity alongside the NU airline code.
The airline’s primary hub is Naha Airport in Okinawa, where its network supports travel between the prefecture’s islands and larger urban centres elsewhere in Japan. It serves 11 destinations within Japan across 23 routes. Important departure points include Okinawa, Tokyo, Ishigaki, Osaka and Miyakojima, while other destinations include Fukuoka, Nagoya, Okayama, Komatsu, Kumejima and Yonaguni Jima.
Boeing 737 aircraft form the basis of Japan Transocean Air’s operations, with the Boeing 737-400 appearing in the route record. The airline is designed primarily for domestic regional flying rather than long-haul service. Cabin arrangements and fare products can vary, but travellers generally encounter Japan Airlines-style Economy service, with Class J seating offered on eligible aircraft and routes for additional space and comfort.
Japan Transocean Air is closely integrated with Japan Airlines, a member of the Oneworld alliance, although JTA is not presented as a separate full alliance member. Eligible flights can participate in the JAL Mileage Bank programme, allowing passengers to earn or redeem miles subject to the booked fare and programme rules. Connections, ticketing and some passenger services may also be coordinated through Japan Airlines channels.
JTA’s main strength is its specialised Okinawa network, particularly links involving Naha and the more distant islands of Ishigaki, Miyakojima, Kumejima and Yonaguni. This makes it useful for itineraries combining mainland Japan with multiple Okinawan islands. The network is comparatively small, however, and island services can be more exposed to typhoons, strong winds and other seasonal disruptions, so flexible plans are advisable during unsettled weather.
Good to know
Flying with Japan Transocean Air — what to expect
Okinawa-Focused Network
JTA is particularly useful for travel between Naha, Okinawa’s outer islands and major mainland Japanese cities. Some itineraries may involve a connection at Naha.
Check Fare Conditions
Baggage, changes and refunds depend on the fare purchased and may follow Japan Airlines domestic rules. Review the conditions shown during booking, especially for discounted tickets.
Class J Availability
Selected flights may offer Class J, a domestic premium seating option with more space than standard Economy. Availability depends on the aircraft and route.
Allow Weather Flexibility
Typhoons and strong winds can disrupt Okinawan island flights, particularly during the storm season. Leave extra time around separate tickets, ferries or other fixed connections.
Mileage Eligibility
Eligible fares can earn JAL Mileage Bank miles, but accrual varies by booking class. Add your membership number before departure and retain the boarding record until miles post.
Network overview
Where Japan Transocean Air flies
Japan Transocean Air operates 23 routes to 11 destinations across 1 countries, its longest sector reaching Tokyo to Ishigaki (1,949 km nonstop).
Destinations served
Cities Japan Transocean Air flies to, most-served first.
Main hubs
Busiest departure bases, by route count.
Fleet
Aircraft types on record for these routes.
Longest nonstop route
Tokyo → Ishigaki
1,949 km · HND → ISG
The longest sector in the Japan Transocean Air network, measured as the great-circle distance between the two airports.
Route data · TravelPayouts route data · updated 2026-07
Route network
Popular routes operated by Japan Transocean Air
Notable destinations on Japan Transocean Air's network.
NUOkinawadirectNUIshigakidirectNUMiyakojimadirectNUTokyodirectNUFukuokadirectNUKomatsudirectNUKumejimadirectNUNagoyadirectNUOkayamadirectNUOsakadirectNUYonaguni JimadirectDestination list is indicative of Japan Transocean Air's network; see the airline's official route map for its complete, current schedule.
More from Japan
Other airlines based in Japan
FAQ
Japan Transocean Air — frequently asked questions
Quick answers to the details travellers usually check first, from codes and locations to the practical basics that help with planning.
8 common questions
- Japan Transocean Air’s primary hub is Naha Airport in Okinawa. Its other busiest departure points are Tokyo, Ishigaki, Osaka and Miyakojima.
- Japan Transocean Air operates domestic services within Japan, concentrating on Okinawa and its islands while linking them with cities such as Tokyo, Osaka, Fukuoka, Nagoya, Okayama and Komatsu.
- Japan Transocean Air’s longest route is Tokyo to Ishigaki, covering about 1,949 km nonstop.
- Japan Transocean Air serves exactly 11 destinations across 1 country, operating 23 routes.
- Carry-on baggage generally follows Japan Airlines’ domestic rules and must fit within the applicable size, weight and item limits. Check the current allowance for your aircraft and fare before travel, as smaller-aircraft restrictions or policy changes may apply.
- Originfacts compares live fares from hundreds of airlines and travel agencies via its partner Travelpayouts. Originfacts never adds a fee to the prices shown.
- Fares are often lower when booked early and outside Japanese public holidays, school breaks and Okinawa’s busiest summer travel periods. Compare nearby dates and avoid peak Golden Week, Obon and New Year departures where possible.
- The busiest departure locations by route count are Okinawa, Tokyo, Ishigaki, Osaka and Miyakojima. Naha Airport in Okinawa is the airline’s main hub.