| 1 | ESK | SkyEurope Airlines | IATA: NE, Callsign: Relax, Founded November in 2001. Commenced operations on 13 February 2002. Ceased operations on 01 September 2009. | SK | AVCODES |
| 2 | ESK | SkyEurope | IATA: NE | | ICAO1 |
| 3 | ESKE | ELISEOS TRUCKING LLC | | | SCAC4 |
| 4 | ESKI | ELMIRA SHIPPING AND TRADING SA | | | SCAC4 |
| 5 | ESKJ | EIMSKIP JAPAN CO LTD | | | SCAC4 |
| 6 | ESKM | ESKIMO EXPRESS INC | | | SCAC4 |
| 7 | ESKN | ELIAS TRUCKING & ASSOCIATES | | | SCAC4 |
| 8 | ESKQ | EXPRESS TRUCK LINES INC | | | SCAC4 |
| 9 | ESKT | ESK TRUCKING CO INC | | | SCAC4 |
| 10 | ESKX | Schluderberg-Kurdle Co., Inc. | added 1/1968; 4/1970; eliminated 10/1971 | | NAKINA |
| 11 | ESKX | Schluderberg-Kurdle Co., Inc. | added 1/68; 4/70; eliminated 10/71 | | NRHS |
| 12 | ESKX | SCHLUDERBERG-KURDLE CO., INC. | | | PWRC |
