A list of aircraft operators that have that have suffered an accident, serious incident or hijacking. The list may also contain defunct airlines or airlines that in the meantime have changed their name or have merged.

Airlines:
AECA - Aeroservicios Ecuatorianos
Aerogal - Aerolineas Galapagos (renamed Avianca Ecuador, 2018)
Aerolineas Condor
Aeropacifico
Aerotaxis Ecuatorianos SA - ATESA
ANDES - Aerolineas Nacionales del Ecuador (probably ceased operations ca 1999)
ANDESA
AREA Ecuador
Avianca Ecuador (formerly Aerogal)
Compania Aéreo Amazonas
Ecuatoriana (Compañia Ecuatoriana de Aviacion)
ICARO
SAETA
SAN Ecuador - Servicios Aéreos Nacionales
SEDTA - Sociedad Ecuatoriana de Transportes Aéreos
TAME Ecuador
Transandina Ecuador
Transportes Aéreos Orientales - TAO (probably ceased operations ca 1999)

Corporations:
Petroproduccion - Unidad de Aviacion
Shell Company of Ecuador

Military:
Aviación del Ejército Ecuatoriana - AEE
Aviación Naval Ecuatoriana - ANE
Fuerza Aérea Ecuatoriana

Unknown:
Renta Corporación (Rentacorp)
Servicio Aéreo Misional - SAM