Another fine Cian Bolger header gave Fleetwood all three points as the mammoth unbeaten run rolled on to 16 games without defeat.
It was less than a thriller at stadium:mk but a slick set-piece routine saw Bolger nod in his fifth of the season from George Glendon’s pin-point corner from the right.
It was yet another clean sheet for Uwe Rosler’s men who shut out the Dons and moved up to 58 points in the league table.
Rosler made two changes from the side that beat Bradford 2-1 in midweek with Glendon and Bobby Grant in for David Ball and Markus Schwabl with Cameron Brannagan deployed in a number 10 role.
It was a tame start to the game with both sides passing the ball across the big pitch with ease.
Harvey Barnes nearly opened the scoring with a sublime volley as he cut in from the left and smashed the ball into the underside of the bar.
It was a fairly even first half but the Dons had the better of the early chances with Chuks Aneke nodding wide of the right post after out-leaping Ash Eastham at the back post.
Town launched some slick counters but just lacked a good final ball to finish the job in the first half.
Fleetwood grew into the game with Brannagan and Dempsey getting more time on the ball but still Town struggled to perfect their final ball with Aneke firing a set-piece straight down Cairns’ throat up the other end.
The Dons started brightly with Aneke blasting the ball straight at Davies and then slicing the rebound wide of the left post.
Fleetwood responded as Ash Eastham’s header from Dempsey’s corner was cleared off the line by Baldock.
Barnes fizzed a menacing ball across goal but no white shirt could get a touch and it flew to safety.
Rosler threw Ball on moments later to liven up Town’s attack and he was in the action within seconds.
The forward was tripped outside the box and Glendon’s subsequent set-piece flew straight to Bolger at the back post but his header was acrobatically cleared off the line by O’Keefe with Davies smashing the rebound straight at Martin.
And Town finally took the lead from a set-piece as Glendon won a corner from McLaughlin’s deft chip down the right flank with the midfielder whipping in a peach of a corner from the right that was powerfully nodded in by Bolger in the 61st minute.
Town were forced into a substitution minutes later as McLaughlin went down with what looked to be another ankle knock to be replaced by Godswill Epkolo.
As the game progressed the Dons pushed for an equaliser but Town defended well in their numbers with Bolger clearing everything in his path.
Town’s determination to hang on to the three points was evident in the closing stages with Town continuing to press and stop crosses with the referee waving away Dons sub Robbie Muirhead’s over-dramatic claim for a penalty when he rolled over in the box at the near post under pressure from Eastham.
Fleetwood: Cairns, McLaughlin (Epkolo, 65), Eastham, Bolger, Davies, Bell, Dempsey, Glendon, Grant, Brannagan (Ball, 54), Cole (Hunter, 75). Subs not used: Neal, Davis, Nirennold, Schwabl.
MK Dons: Martin, Baldock, Potter, Bowditch (Muirhead, 87), O’Keefe (Agard, 78), Williams, Barnes, Downing, Tilney, Aneke, Maynard. Subs not used: Nicholls, Lewington, Ngombo, Powell, Brittain.
Referee: Nicholas Kinseley.