Airline codes| IATA | ICAO | Airline | Call sign | Country | Comments |
|---|
| JTF | Jet Time | JETFIN | Finland | 2014[1] |
|
| JAS | Jet Aviation Flight Services Inc | United States |
| JTN | Jet Test International | JET TEST | United States |
| JGJ | Jinggong Jet | GLOBAL JINGGONG | China | 2014[1] |
| JNY | Journey Aviation | UNIJET-ROCKBAND | United States | 2014[1] |
| JKR | Justice Air Charter | JOKER | United States | Trading name for Reliant Aviation, allocated in 2014[2] |
| JWD | Jayawijaya Dirgantara | Indonesia |
| JSH | Jet-stream | STREAM AIR | Hungary |
| JCB | J C Bamford (Excavators) | JAYSEEBEE | United Kingdom |
| RFX | J P Hunt Air Carriers | REFLEX | United States | J P Hunt Air Carriers |
| XM | J-Air | J AIR | Japan |
| JC | JEX | JAL Express | JANEX | Japan |
| JO | JAZ | JALways | JALWAYS | Japan |
| JDA | JDAviation | JAY DEE | United Kingdom |
| JDP | JDP Lux | RED PELICAN | Luxembourg |
| JHM | JHM Cargo Expreso | Costa Rica |
| TQM | JM Family Aviation | TACOMA | United States |
| MT | JMC | JMC Airlines | JAYEMMSEE | United Kingdom |
| 1M | JSC Transport Automated Information Systems | Russia |
| JSJ | JS Air | JS CHARTER | Pakistan |
| JES | JS Aviation | JAY-ESS AVIATION | Mexico |
| JCK | Jackson Air Services | JACKSON | Canada |
| JI | JAE | Jade Cargo International | JADE CARGO | China |
| JAW | Jamahiriya Airways | JAW | Libya |
| JMB | Jambo Africa Airlines | JAMBOAFRICA | Democratic Republic of Congo |
| WWW | Janet | JANET | United States | de facto name |
| FJX | Jet Sky Cargo and Air Charter | Kenya |
| JAK | Jana-Arka | YANZAR | Kazakhstan |
| JAX | Janair | JANAIR | United States |
| 3X | JAC | Japan Air Commuter | COMMUTER | Japan |
| JSV | Japan Aircraft Service | Japan |
| JL | JAL | Japan Airlines | JAPANAIR | Japan | Japan Airlines International |
| JL | JAL | Japan Airlines Domestic | J-BIRD | Japan | defunct |
| EG | JAA | Japan Asia Airways | ASIA | Japan | defunct |
| NU | JTA | Japan Transocean Air | JAI OCEAN | Japan |
| JA | JAT | JetSMART | ROCKSMART | Chile |
| VJ | JTY | Jatayu Airlines | JATAYU | Indonesia |
| J9 | JZR | Jazeera Airways | JAZEERA | Kuwait |
| 7C | JJA | Jeju Air | JEJU AIR | Republic of Korea |
| JNY | Jenney Beechcraft | JENAIR | United States |
| XLD | Jeppesen Data Plan | United States |
| JPN | Jeppesen UK | JETPLAN | United Kingdom |
| O2 | JEA | OLT Express | JETA | Poland | defunct, funded by acquisition of Jet Air and YES Airways |
| JSI | Jet Air Group | SISTEMA | Russia | JSC |
| 9W | JAI | Jet Airways | JET AIRWAYS | India |
| QJ | Jet Airways | United States |
| JTX | Jet Aspen Air Lines | JET ASPEN | United States |
| PP | PJS | Jet Aviation | JETAVIATION | Switzerland |
| BZF | Jet Aviation Business Jets | BIZFLEET | United States |
| JCF | Jet Center Flight Training | JET CENTER | Spain |
| JCT | Jet Charter | JET CHARTER | United States |
| JCX | Jet Connection | JET CONNECT | Germany | defunct |
| DWW | Jet Courier Service | DON JUAN | United States |
| JED | Jet East International | JET EAST | United States |
| JEI | Jet Executive International Charter | JET EXECUTIVE | Germany |
| RZA | Jet Fighter Flights | RAZOR | Australia |
| CFT | Jet Freighters | CASPER FREIGHT | United States |
| JGD | Jet G&D Aviation | JET GEE-AND-DEE | Israel |
| MJL | Jet Line International | MOLDJET | Moldova |
| JEK | Jet Link | JET OPS | Israel |
| HTL | Jet Link Aviation | HEARTLAND | United States |
| JNR | Jet Norte | JET NORTE | Mexico |
| JRN | Jet Rent | JET RENT | Mexico |
| JDI | Jet Story | JEDI | Poland | Formerly: Jet Service |
| 3K | JSA | Jetstar Asia Airways | JETSTAR ASIA | Singapore |
| JSM | Jet Stream | JET STREAM | Moldova |
| JTC | Jet Trans Aviation | JETRANS | Ghana |
| JTT | Jet-2000 | MOSCOW JET | Russia |
| OPS | Jet-Ops | OPS-JET | United Arab Emirates |
| LS | EXS | Jet2.com | CHANNEX | United Kingdom |
| JFU | Jet4You | ARGAN | Morocco |
| OSW | JetAfrica Swaziland | BEVO | Swaziland |
| B6 | JBU | JetBlue Airways | JETBLUE | United States |
| JMG | JetMagic | JET MAGIC | Ireland | Defunct |
| JMK | Jetmagic | Malta | Defunct, Not Many Flights |
| JF | JAA | Jet Asia Airways | JET ASIA | Thailand |
| JAF | Jetairfly | BEAUTY | Belgium |
| JTL | Jetall Holdings | FIREFLY | Canada |
| JAG | Jetalliance | JETALLIANCE | Austria |
| 0J | JCS | Jetclub | JETCLUB | Switzerland |
| QNZ | Jetconnect | QANTAS JETCONNECT | New Zealand |
| UEJ | Jetcorp | JETCORP | United States | (United Executive Jet) |
| JCC | Jetcraft Aviation | JETCRAFT | Australia |
| JXA | Jetex Aviation | Lebanon |
| JEF | Jetflite | JETFLITE | Finland |
| JFL | Jetfly Airlines | LINEFLYER | Austria |
| JIC | Jetgo International | JIC-JET | Thailand |
| JLX | Jetlink Express | KEN JET | Kenya |
| JLH | Jetlink Holland | Netherlands | Defunct, ICAO code in use by another company |
| JNV | Jetnova de Aviación Ejecutiva | JETNOVA | Spain |
| JPO | Jetpro | JETPRO | Mexico |
| MDJ | Jetran Air | JETRAN AIR | Romania |
| JRI | Jetrider International | JETRIDER | United Kingdom |
| JEJ | Jets Ejecutivos | MEXJETS | Mexico |
| JEP | Jets Personales | JET PERSONALES | Spain |
| JSE | Jets Y Servicios Ejecutivos | SERVIJETS | Mexico |
| SG | JGO | JetsGo | JETSGO | Canada | defunct |
| JQ | JST | Jetstar Airways | JETSTAR | Australia |
| GK | JJP | JetStar Japan | ORANGE LINER | Japan |
| JM | JKT | Jetstar Hong Kong Airways | KAITAK | China |
| JXT | Jetstream Executive Travel | VANNIN | United Kingdom |
| RSP | JetSuite | REDSTRIPE | United States |
| JPQ | Jett Paqueteria | JETT PAQUETERIA | Mexico |
| JX | JEC | Jett8 Airlines Cargo | TAIPAN | Singapore |
| JO | JTG | Jettime | JETTIME | Denmark |
| JTN | Jettrain Corporation | JETTRAIN | United States |
| JWY | Jetways of Iowa | JETWAYS | United States |
| GX | JXX | JetX Airlines | JETBIRD | Iceland |
| JIB | Jibair | JIBAIRLINE | Djibouti |
| JSW | Jigsaw Project | JIGSAW | United Kingdom | Bristow Helicopters |
| HKN | Jim Hankins Air Service | HANKINS | United States |
| RAS | Jim Ratliff Air Service | SHANHIL | United States |
| JDG | Joanas Avialinijos | LADYBLUE | Lithuania |
| JBR | Job Air | JOBAIR | Czech Republic |
| JHN | Johnson Air | AIR JOHNSON | United States |
| JON | Johnsons Air | JOHNSONSAIR | Ghana |
| JMJ | Johnston Airways | JOHNSTON | United States |
| JMM | Joint Military Commission | JOICOMAR | Sudan |
| JMT | Jomartaxi Aereo | JOMARTAXI | Mexico |
| ODI | Jonsson, H Air Taxi | ODINN | Iceland |
| R5 | JAV | Jordan Aviation | JORDAN AVIATION | Jordan |
| J4 | JCI | Jordan International Air Cargo | Jordan |
| JVK | Jorvik | ISLANDIC | Iceland |
| ENZ | Jota Aviation | ENZO | United Kingdom |
| JNJ | Journey Jet | JOURNEY JET | Thailand |
| JUR | Ju-Air | JUNKERS | Switzerland |
| JFS | Juanda Flying School | JAEMCO | Indonesia |
| JUC | Juba Cargo Services & Aviation Company | JUBA CARGO | Sudan |
| 6J | JUB | Jubba Airways | JUBBA | Somalia |
| DKE | Jubilee Airways | DUKE | United Kingdom |
| HO | DKH | Juneyao Airlines | JUNEYAO AIRLINES | China |
| MEY | Justair Scandinavia | MELODY | Sweden |
| DOJ | Justice Prisoner and Alien Transportation System | JUSTICE | United States |
| JNL | JetNetherlands | JETNETHERLANDS | Netherlands |
| JFA | Jetfly Aviation | MOSQUITO | Luxembourg |
1. ^1 2 FAA Document JO 7340.2E
2. ^FAA Notice 7340.342{{dead link|date=December 2017 |bot=InternetArchiveBot |fix-attempted=yes }}
{{#section:List of airline codes|footer}}