Transitions to adulthood represent a sensitive period for setting young people into particular life course trajectories, and the nature of these transitions have varied more for girls, historically, than for boys. We aim to investigate the long-term significance of different transitions out of full-time education for socioeconomic attainment in later life amongst postwar young women in England. Our data are from the English Longitudinal Study of Ageing for girls born during World War II and the post-war period (1939-1952, n = 1798). Using sequence analysis, we identified six types of transition out of full-time education between ages 14 and 26: Early Work, Mid-Work, Late-Work, Early-Domestic, Late-Domestic, and Part-time Mixed. We used linear and multinomial regression models to examine associations between transition types and socioeconomic attainment outcomes from age 50, including individual income, household income and wealth, and occupational class. Our study found that later transitions into employment (Mid-Work and Late-Work) were associated with higher socioeconomic attainment after age 50 compared with women who made early transitions from education to employment (Early-Work); much of the advantage of making later transitions to employment was due to higher educational attainment. We also found that early transitions to domestic work (Early-Domestic) set young women onto trajectories of lower socioeconomic attainment than compared with those who made early transitions to employment, suggesting the nature of the transition from full-time education is as important as the timing, perhaps uniquely for women. A pathway of cumulative advantage/disadvantage is also evident in our study; results suggest a partial mediating role for educational attainment in associations between childhood social class and later life socioeconomic attainment.