Miller studied broadcast journalism at University College Falmouth in Cornwall, where she produced an award-winning documentary on the 2004 Asian tsunami.
In 2007, she joined STV, as part of ''Scotland Today''. Miller took maternity leave in May 2016, replaced by Lucy Whyte acting as ''STV News at Six'' presenter in the East region. She returned to the Edinburgh newsdesk on 15 May 2017.
In 2018, Miller made a small credited appearance in ''Avengers: Infinity War'', where she played a news reporter who was reporting on an alien attack on New York.
Laura Miller became one of the main presenters of ''Reporting Scotland'' in October 2019. She fronts the programme Monday to Wednesday.