Kammala jumla mai zuwa: Sébastiani ya amince da Maido da Bourbon, amma ya haɗu da Napoleon a lokacin Kwana ɗari, an zabe shi zuwa majalisar a karo na farko a 1815. An yi hijira na ɗan gajeren lokaci bayan dawowar Sarki Louis XVIII, an sake shigar da shi a matsayin Mataimakin a 1819, yana zaune tare da bangaren Hagu, yana goyon bayan siyasa mai sassaucin ra'ayi, kuma yana rikici da majalisar ministocin Jean-Baptiste de Villèle. Bayan da
Juyin Juya Halin, ya goyi bayan Louis-Philippe. Lokacin Sébastiani a matsayin Ministan Harkokin Waje ya ga shigar Faransa cikin Juyin Juya Halin Belgium, da ƙin amincewa da tayar da hankali na Nuwamba, da maganin rikice-rikicen rikice-rikicen kasuwanci da Amurka, da kuma mamayar Faransa na Ancona. A cikin shekarun baya, ya ci gaba a cikin sabis na Gwamnatin Faransa a matsayin jakada.