BACKGROUND Influenza is a cause of considerable morbidity in England, particularly among children. A total of 39% of all influenza‐attributable general practitioner consultations and 37% of all influenza‐attributable hospital admissions occur in those aged under 15 years. Few studies have quantified the impact of influenza outbreaks on families. We assessed this impact during 2 influenza seasons. METHODS We used questionnaires to obtain data in primary schools that reported an outbreak of an influenza‐like‐illness (ILI). We sought data on the loss of productivity, costs borne by families and loss in health‐related quality of life (HRQoL). ILIs were identified using the symptoms criteria from the European Centre for Disease Prevention and Control and the UK Flusurvey. RESULTS For each child reporting ILI, mean school absence was 3.8 days (95% confidence interval [CI]): 3.0‐4.8) with mean work absence for caregivers reported as 3.7 days (95% CI: 2.7‐4.8). The mean loss in HRQoL was 2.1 quality‐adjusted life days (95% CI: 1.5‐2.7). The estimated total pediatric burden of disease for reported school‐based outbreaks during the 2 influenza seasons was 105.3 QALYs (95% CI: 77.7‐139.0). CONCLUSIONS This study shows the potential social and economic benefit of vaccination of children during mild influenza seasons.