Littler produced a series of scintillating displays on Finals Day at AFAS Live as the teenager racked up his fourth TV crown in an unprecedented first year as a professional.
Having defeated Chris Dobey 10-7 in the afternoon's quarter-finals, Littler dismantled five-time champion and Dutch crowd favourite Michael van Gerwen in the semi-finals, winning 11-4 with a 107.95 average.
That display included a stunning nine successive legs without Van Gerwen being afforded a dart at a double as he came from 4-2 down to power into the final.
Littler then produced his third ton-plus average of the day in the final as he brushed aside another former World Champion in Smith by the same scoreline.
2024 Jack's World Series of Darts Finals
Schedule of Play
Sunday September 15
Afternoon Session
Quarter-Finals
Luke Littler 10-7 Chris Dobey
Michael van Gerwen 10-9 Luke Humphries
Peter Wright 10-4 Daryl Gurney
Michael Smith 10-9 Rob Cross
Evening Session (1900 CEST, 1800 BST)
Semi-Finals
Luke Littler 11-4 Michael van Gerwen
Peter Wright 6-11 Michael Smith
Final
Luke Littler 11-4 Michael Smith