Kyle Connell hit an 80th-minute winner as Airdrie inflicted a first Scottish League One defeat of the season on leaders Falkirk.
The on-loan Kilmarnock striker netted the only goal at the Falkirk Stadium to push Airdrie up to fourth in the table.
The hosts had the better of a quiet first half with Robbie Leitch having their best chance saved.
Airdrie improved after the break though and Connell was denied from a good chance before later converting the rebound after Robbie Mutch had stopped Paul McKay’s header.
'Obviously Messi is the best player in history and being compared to him means that you're doing things right, but I try to be myself': Barcelona star responds to comparisons with Argentine legend
'Darwin Nunez would be gold for Arsenal': Liverpool legend claims Gunners should have signed Uruguayan striker in January
