Background: There has been a significant uptake in the use of telepractice during the coronavirus SARS-CoV-2 (COVID-19) pandemic. This study explored the experiences of speech and language therapists (SLTs), assistants (SLTAs) and parents with telepractice during the COVID-19 pandemic. Aims: (1) To identify factors that influenced success of telepractice; and (2) to describe clinicians' and parents' preferences for the future mode of service delivery for preschoolers with communication disorders. Methods & Procedures: The study was conducted in partnership with one publicly funded programme in Ontario, Canada, that offered services to preschoolers with speech, language and communication needs at no cost. SLTs (N = 13), assistants (N = 3) and parents (N = 13) shared their experiences and perspectives during semi-structured videoconference interviews. Outcomes & Results: Factors that influenced the success of telepractice were reported in three categories: the setting (i.e., where and how telepractice was being delivered); the nature of telepractice (i.e., the services that were provided via telepractice); and the individuals (i.e., who was involved in telepractice). These factors were reported to interact with each other. As the needs for each child and family are unique, parents and clinicians reported a preference for a hybrid and flexible service delivery model in the future. Conclusions & Implications: The themes identified in this study can be used by clinicians and managers to consider factors that influence the success of telepractice for children and families.