Airdrie recovered from conceding an early goal to take three points following the visit by Cowdenbeath.
Stephen McConalogue slotted the ball into an open goal following good lead-up work by Pat Scullion and David Armstrong after three minutes.
Stephen McDougall fired a deserved equaliser after 15 minutes later.
Stuart Noble headed dominant Airdrie ahead after 36 minutes and, 11 minutes from time, Allan Russell forced the third goal home after a corner.
Airdrie Utd: Robertson, McKenna, Lovering, Smith, Donnelly, McDonald, McDougall (Prunty 78), McKeown, Russell (Watt 89), Noble (Gillies 82), Waddle.
Subs Not Used: Jenkins, Hollis. Booked: Lovering.
Goals: McDougall 18, Noble 36, Russell 79.
Cowdenbeath: Hay, Patrick Scullion (McBride 62), Adamson, Hannah, John Armstrong, Hill, Mark Ramsey, Gilfillan, McConalogue (Dalziel 73), David Armstrong (O'Neil 70), Clarke.
Subs Not Used: Howatt, Allison.
Booked: Gilfillan, Clarke, David Armstrong, O'Neil.
Goals: McConalogue 3.
Ref: S Finnie