| 1 | GLG | Aerolineas Galapagos S.A. AeroGal | IATA: 2K, Callsign: Aerogal, Name changed to Avianca Ecuador w.e.f. 18 June 2014. IATA Designator changed from 2K* | EC | AVCODES |
| 2 | GLG | Aerolineas Galapagos S.A. AeroGal | IATA: 2K, Callsign: Aerogal, IATA Designator changed to 2K | EC | AVCODES |
| 3 | GLG | Avianca Ecuador d/b/a Avianca | IATA: 2K, Callsign: Galapagos, Name changed from Aerolineas Galapagos S.A. AeroGal w.e.f. 18 June 2014. IATA Designator changed from 2K* | EC | AVCODES |
| 4 | GLG | Aerogal | IATA: 2K | | ICAO1 |
| 5 | GLG | Aerolineas Galapagos S.A. AeroGal | now Avianca Ecuador S.A. | EC | TRAFFIC |
| 6 | GLG | Gmeinder Lokomotivenfabrik GmbH | | DE | VKM |
| 7 | GLGC | GREEN LOGISTICS CANADA INC | | | SCAC4 |
| 8 | GLGD | GREENTREE LOGISTICS INC | | | SCAC4 |
| 9 | GLGE | G L G EXPRESS INC | | | SCAC4 |
| 10 | GLGF | GC LOGISTICS | | | SCAC4 |
| 11 | GLGI | GREEN LINE GLOBAL INTERNATIONAL COR | | | SCAC4 |
| 12 | GLGJ | GOLDING TRANSPORT INC | | | SCAC4 |
| 13 | GLGM | G T LOGISTICS INC | | | SCAC4 |
| 14 | GLGN | GLOBAL LOGISTICS SOLUTIONS INC | | | SCAC4 |
| 15 | GLGR | GLG TRUCKING CO INC | | | SCAC4 |
| 16 | GLGS | GOLDSTAR LOGISTICS CORPORATION | | | SCAC4 |
| 17 | GLGU | GLOBAL GAS SERVICES LLC | | | SCAC4 |
| 18 | GLGY | GEOLOGICAL SURVEY OF CANADA | | | SCAC4 |
