Airlines
| Name | Country | ICAO | |
|---|---|---|---|
| Jet2.com Flight Status | United Kingdom | EXS | |
| JetBlue Airways Flight Status | United States | JBU | |
| Jetstar Airways Flight Status | Australia | JST | |
| JetSuiteX Flight Status | United States | JSX | |
| Jota Aviation Flight Status | United Kingdom | ENZ | |
| Juneyao Airlines Flight Status | Chinese | DKH | |
| K D Air Corporation Flight Status | Canada | KDC | |
| Kenmore Air Flight Status | United States | KEN | |
| Key Lime Air Flight Status | United States | LYM | |
| KLM Royal Dutch Airlines Flight Status | Netherlands | KLM | |
| Korean Air Flight Status | Sout Korea | KAL | |
| LAN Airlines Flight Status | Chile | LAN | |
| LAN Peru Flight Status | Peru | LPE | |
| Lion Mentari Airlines Flight Status | Indonesia | LNI | |
| Logan Air Flight Status | United Kingdom | LOG |