The Falcons scored 10 points in the final 1:48 of the first half, taking advantage of back-to-back Josh Allen interceptions.
Atlanta leads Buffalo 15-14 at halftime.
The Bills led 14-5 and were threatening for more. They faced a third-and-eight from the Atlanta 10 when Duron Harmon picked Allen on a pass intended for Cole Beasley in the end zone.
The Falcons scored five plays and 80 yards later on a 1-yard Mike Davis run.
Two Bills’ snaps later, the Falcons had the ball back as A.J. Terrell picked Allen on a deep pass intended for Beasley. He returned it 7 yards on the Atlanta 44.
Allen is 8-of-20 for 88 yards and two picks. He has two touchdown runs, with his 1- and 4-yard runs giving the Bills an early 14-2 lead.
Matt Ryan has completed 8 of 14 passes for 142 yards.