Japan Transocean Air
IATA ICAO Callsign
Founded20 June 1967; 56 years ago (1967-06-20)
(as Southwest Air Lines)
Commenced operationsJuly 1967; 56 years ago (1967-07)
HubsNaha Airport
Focus citiesNew Ishigaki Airport
AllianceOneworld (affiliate)
Fleet size14
Parent companyJapan Airlines (72.8%)
HeadquartersNaha, Okinawa, Japan
Key peopleTakeshi Ichinosawa (Chairman & President)
Employees739 (31 March 2017)[2]

Japan Transocean Air Co., Ltd. (日本トランスオーシャン航空株式会社, Nihon Toransuōshan Kōkū Kabushiki-gaisha), or JTA, is an airline based in Naha, Okinawa Prefecture, Japan.[3] It operates domestic services on behalf of Japan Airlines. Its main base is Naha Airport.[4] From 1967 until 1993, the airline was known as Southwest Air Lines.


A former Southwest Air Lines Boeing 737-200
A former JTA Boeing 737-400 in former Southwest Air Lines livery at Chūbu Centrair International Airport, Nagoya, Japan (2013)
A former JTA Boeing 737-400 (2004)

The airline was established on 20 June 1967 as Southwest Air Lines (南西航空, Nansei Kōkū), and started operations in July 1967. It changed its name in July 1993. It has 718 employees (at March 2014) and is owned by Japan Airlines (51.1%), Naha Airport Terminal (17%), Okinawa Prefecture (12.9%) and others (19.1%)[4] It flew Convair 240s until new capital from JAL allowed it to upgrade to NAMC YS-11s, and eventually Boeing 737s. JTA occasionally lends aircraft to JAL in the event of equipment failure. JTA also provides maintenance services for JAL Group Boeing 737-400 aircraft. JTA owns 72.9% of Ryukyu Air Commuter. At one time the head office of Southwest Air Lines was at 306-1 Kagamizu in Naha.[5]


JTA serves the following destinations:[6]

Island City Airport Notes Refs
Kyushu Fukuoka Fukuoka Airport
Ryukyu Islands Ishigaki Ishigaki Airport Airport Closed
Ryukyu Islands Ishigaki New Ishigaki Airport Focus city
Kyushu Kagoshima Kagoshima Airport Terminated
Shikoku Kōchi Kōchi Airport Terminated
Honshu Komatsu Komatsu Airport
Ryukyu Islands Kumejima Kumejima Airport
Shikoku Matsuyama Matsuyama Airport Terminated
Ryukyu Islands Miyakojima Miyako Airport
Ryukyu Islands Miyakojima Shimojishima Airport Terminated [7]
Honshu Nagoya Chubu Centrair International Airport
Ryukyu Islands Naha Naha Airport Hub
Honshu Okayama Okayama Airport
Honshu Osaka Kansai International Airport
Honshu Osaka Itami Airport Terminated
Honshu Tokyo Haneda Airport Terminated
Ryukyu Islands Yonaguni Yonaguni Airport Terminated


Current fleet

JTA Boeing 737-800

As of October 2017, Japan Transocean Air operates the following aircraft:[8][needs update]

Japan Transocean Air fleet
Aircraft In fleet Orders Passengers Notes
Boeing 737-800[9] 14 20/145[10]
Total 14

Former fleet

Japan Transocean Air has previously operated the following aircraft:

Accidents and incidents

Since the airline's foundation, there has only been one accident which was under the former Southwest Air Lines brand.


  1. ^ "JO 7340.2J Contractions - Basic with Change 1 & Change 2" (PDF). Federal Aviation Administration. 3 June 2019. pp. 3-1-50, 3-2-42, 3-3-44. Retrieved 8 February 2020.
  2. ^ "日本トランスオーシャン航空 会社情報". Archived from the original on 9 January 2018. Retrieved 21 July 2016.
  3. ^ "Company Profile Archived 2018-01-09 at the Wayback Machine" (Japanese). Japan Transocean Air. Retrieved on May 19, 2009.
  4. ^ a b "Directory: World Airlines". Flight International. 2007-04-03. p. 97.
  5. ^ "World Airline Directory." Flight International. 10 April 1976. p. 958. "Head Office: 306-1 Kagamizu, Naha, Okinawa, Ryukyu Islands, Japan."
  6. ^ "About JTA," Japan Transocean Air
  7. ^ a b "Shimojijima Airport," Okinawa Prefecture
  8. ^ "Global Airline Guide 2017 (Part One)". Airliner World (October 2017): 18.
  9. ^ "Japan Transocean finalizes order for 12 737-800s". The Boeing Company.
  10. ^ Source: company website http://www.churashima.net/jta/company/fleet.html Archived 2017-08-26 at the Wayback Machine
  11. ^ "[1]," Airliners.net
  12. ^ "Boeing: Japan Airlines Group". Retrieved 21 July 2016.
  13. ^ "[2]," Airliners.net
  14. ^ Ranter, Harro. "ASN Aircraft accident Boeing 737-2Q3 JA8444 Ishigaki Airport (ISG)". Retrieved 21 July 2016.