The hosts took the lead through Nathan Delfouneso’s close range finish on 46 minutes, but a Donervon Daniels own goal levelled, before Lewis Grabban notched on 80 minutes and Josh Murphy sealed the win 60 seconds later.
A stale first half bereft of quality briefly threatened to spark into life when a Tony McMahon free-kick was palmed behind by John Ruddy on 12 minutes.
From the resulting corner, Francois Zoko leapt highest to meet John Lundstram’s in-swinging delivery, but the Norwich goalkeeper was equal to it.
The visitors responded with a half chance of their own five minutes later, when Bradley Johnson found Grabban with a right-wing cross, but his header from 10 yards was comfortably saved by Joe Lewis.
The summer signing from Bournemouth looked the most likely to break the deadlock and the forward’s deflected 20-yard strike had Lewis rooted to the spot as it flew narrowly wide on the half-hour mark.
The 26-year-old then wasted the best chance of the half, three minutes before the interval, when he dragged his shot wide of the left-hand post after being fed by Wes Hoolahan inside the box.
Whatever managers Neil Adams and Jose Riga said to their respective sides at half-time had the desired effect in an action-packed start to the second period.
Just one minute after the restart Blackpool took the lead through Delfouneso’s close range finish after an Ishmael Miller effort from David Perkins’ left-wing cross was saved by Lewis.
The lead did not last for long, though, as Daniels headed a Nathan Redmond corner-kick into his own net to make it 1-1.
The goal gave Norwich a new found confidence and they should have taken the lead when Redmond tricked his way down the right flank and found Bradley Johnson with a peach of a cross, only for the midfielder to be denied by a brilliant save from Lewis.
The Canaries continued to press for a second and Johnson was unfortunate to see his 25-yard free-kick float just over the top left-hand corner, with the Blackpool goalkeeper stranded.
However, Norwich were not to be denied and, late on, Grabban cut inside before dispatching a right-foot shot from 18 yards that deflected off the boot of McMahon and into the top right-hand corner to make it 2-1.
Blackpool were deflated and, just a minute later, substitute Murphy killed the game off after dribbling inside the box from the left flank and finishing low past the helpless Lewis.