Equal access to family planning methods is fundamental to achieving health-related sustainable development goals in Malawi. Family planning is known to avert maternal deaths, improving a woman’s health status. Malawi increased the contraceptive prevalence rate to 48.6% in 2020 from 38.1% in 2012. However, there persist cases of a high maternal mortality ratio of 349 maternal deaths per 100,000 live births. The question remains as to why these adverse outcomes exist. Several studies in Malawi have established the existence of inequalities in sexual and reproductive health interventions with a focus on health status as an intrinsic component but did not consider the inequality of opportunity that contributes to the existing inequalities. Using data from the 2015–2016 Malawi Demographic Health Survey (MDHS) and 2013–2014 Service Provision Assessment (SPA), this study examined inequality of opportunity in family planning services. Specifically, using the human opportunity index (HOI), the study established that modern contraceptives are inequitably distributed among women at the national level and respective sub-group analysis. Further, age, marital status, number of living children, and sex of the household head had a higher marginal contribution toward inequality of opportunity in family planning methods. As such, this calls for government-targeted interventions to improve access to family planning services, such as extending the implementation of the community health strategy to those in the urban areas and increasing awareness of the importance of family planning services to teenage women.