While paratransit responds to many transportation needs of people with mobility disability for individual transit, obstacles persist when using paratransit with young children. Among Paratransit-eligible Parents (PeP), the objectives of this study were to: 1) describe PeP profile and characteristics, and facilitators and barriers of paratransit use with young children, and 2) explore PeP perceptions and experiences of paratransit. Guided by the Socio-ecological model, a mixed-method study consisted of a quantitative survey (questions about paratransit use, needs, and barriers and facilitators) followed by focus groups (to explore more deeply experiences and perceptions of paratransit use). The survey data were summarized and data from 3 focus groups were transcribed verbatim, coded line-by-line and analyzed thematically. Data were woven into a joint display diagram. PeP were mostly women with at least one motor disability. They asked themselves up to 71 questions before travelling with young children. The main facilitators were real-time transport tracking and mid-transport stops with drop-offs. The main obstacles were managing the car seat, stroller and child, waiting for transportation and booking 24 h in advance. Paratransit obstacles when travelling with a child increase PeP mental load and caregiver dependence. A collaborative legislative reform would enhance autonomous mobility in paratransit.