Rubuta ci gaba don wannan sakin layi - An buɗe tashar Onagawa a ranar 7 ga Oktoba, 1939. An shiga tashar a cikin cibiyar sadarwa ta JR East bayan keɓance JNR a ranar 1 ga Afrilu, 1987. An dakatar da ayyukan bayan tsunami a ranar 11 ga Maris, 2011
wanda ya lalata ginin tashar da layin dogo na kusa.