Martin Ormonde, who hit 2-8, provided the inspiration as Fingal impressed in crushing a lacklustre Monaghan in Swords.
The home side's first goal came from St Brigid's forward Cian O'Mahoney who, after Monaghan goalkeeper Hugh Byrne saved his first shot, pounced on the rebound.
The second half was again dominated by Ormonde as his accuracy from placed balls saw him send over four more frees and he had the last word as he scored his second and Fingal's fourth goal.
Scorers -- Fingal: M Ormonde 2-8 (0-7f), A McInerney 0-4, P Daly 1-0, R McGarry 0-2 (1f), C O'Mahoney 1-1, D de Burca, P McAllister, M Cussen 0-1 each. Monaghan: S Lambe 0-9 (8f), S Roche, R Meegan, M McHugh (1f), G Boyd 0-1 each.
Fingal -- W Burke; P Coyne, P Sheridan, D Markey; M Cussen, D Byrne, A Morris; D de Burca, R McGarry; A McInerney, M Ormonde, P McAllister; B McCarthy, C O'Mahoney, P Daly. Subs: C Hartford for Burke (51), D Vaughan for Sheridan (60), E McCabe for De Burca (55), A Richardson for McInerney (60), JM Sheridan for O'Mahoney (51).
Monaghan -- H Byrne; A Lambe, P Murphy, P Treanor; D Crowe, J McHugh, K Boylan; T Hilliard, E Mac Suibhne; B Mc Guigan, S Roche, M McHugh; R Meegan, S Lambe, M Murphy.
Subs: P Dowdall for Treanor (55), F Rafter for Boylan (35), G Dooley for Mac Suibhne (35), G Boyd for McHugh (57), J McAnespie for Murphy (57).
Ref -- C Lyons (Cork).