The -400 was offered in passenger (-400), freighter (-400F), combi (-400M), domestic (-400D), extended range passenger (-400ER), and extended range freighter (-400ERF) versions.
O -400 ofreceuse en versión de pasaxeiros (-400), carga (-400F), combi (-400M), doméstica (-400D), de pasaxeiros de maior alcance (-400ER), e carga de maior alcance (−400ERF).