In a rare scenario which led to both sides celebrating at the final whistle, the Latics were deemed safe on account of results elsewhere – namely defeats for relegation rivals Rochdale and Northampton Town.
As for the Tigers, they sealed the title with a victory that was coupled up by a draw for Peterborough United.
During five chaotic first half minutes, goals from Keane Lewis-Potter and George Honeyman cancelled out Joe Dodoo's momentary response.
But in truth, the result proved to hold little significance for Wigan – unbeaten in five games before making the trip across the M62 – as Rochdale and the Cobblers were beaten by Doncaster Rovers and Blackpool respectively.
Josh Magennis added a third for Hull midway through the second half.
Resisting the temptation to spring a surprise ahead of kick-off, Leam Richardson named an unchanged line-up for the fifth game running.
There was one alteration for Hull, meanwhile, as Richard Smallwood returned at the expense of Regan Slater.
As both sides took an initial look at what they were up against, Alfie Jones kept Dodoo at bay with a timely block, while at the other end Magennis prodded wide from inside the six-yard box.
However, with a sea of bodies in front of the Hull striker, it wasn't the most inviting chance.
Lee Evans took aim from distance for Wigan – and the visitors thought they should have been awarded a penalty when Callum Lang was felled. Not given.
No sooner than referee Bobby Madley waved away those protests, meanwhile, it was advantage Hull in pursuit of the League One title as Lewis-Potter nodded in an opener at the far post.
Wigan forged an instant response when Dodoo fired home after being picked out superbly by Will Keane – playing against his former club – but that wasn't to be the end of a frantic exchange.
Indeed, visiting captain Jamie Jones was beaten for a second time in five minutes, although in truth there was little he could have done to keep out Honeyman's low strike.
Another strong penalty shout for the Latics – once again involving Lang – was rejected by Madley in the run-up to half-time, much to the dismay of Richardson, his backroom staff and players.
In isolation as a spectacle, things struggled to get going upon the restart.