| 1 | ERO | Sun d'Or International Airlines | IATA: 7L, Callsign: Echo Romeo, Designator 7L* recalled by IATA | IL | AVCODES |
| 2 | ERO | Sun d'Or International Airlines | IATA: ER, Callsign: Echo Romeo, | IL | AVCODES |
| 3 | ERO | Sun d'Or International Airlines | IATA: 2U, Callsign: Echo Romeo, As of March 2013, all Sun d'Or's flights are operated by El Al under Sun d'Or, Arkia and Israir brand. Authorities revoked operating licence. Ceased operations 01 April 2011. Designator 2U restated/changed by IATA | IL | AVCODES |
| 4 | EROC | EVER READY OIL COMPANY INC | | | SCAC4 |
| 5 | EROK | EAGLE ROCK ENTERPRISE | | | SCAC4 |
| 6 | EROL | EUROLINE WINDOWS INC | | | SCAC4 |
| 7 | ERON | EVANS, ROMNS | | | SCAC4 |
| 8 | EROO | ESTERBROOK TRANSPORTATION | | | SCAC4 |
| 9 | EROX | Cities Service Oil Co. | 10/1966 | | NAKINA |
| 10 | EROX | Empire Oil & Refining Co. | 7/1935 | | NAKINA |
| 11 | EROX | Cities Service Oil Co. | Oct-66 | | NRHS |
| 12 | EROX | CITIES SERVICE OIL CO. | | | PWRC |
