United lost their Semi-Final second leg 2-1 to the Tigers on the night to see their 17-game unbeaten run come to an end, but progressed courtesy of Paul Pogba’s crucial second-half goal.
Tom Huddlestone rifled the hosts into the lead from the penalty spot on 36 minutes to give the home fans inside the KCOM Stadium hope of turning around a two-goal deficit, but Pogba’s poked effort into the bottom corner soon cancelled it out.
Oumar Niasse latched onto David Meyler's cross late on to give Hull a second goal and set up a tense finish, but United held out to progress to the final for the first time since 2010.
Review: Southampton beat Liverpool to reach EFL Cup Final
The showpiece means Jose Mourinho - a three-time winner - will take charge of his first final as United boss, and has the opportunity to claim the club’s fifth EFL Cup success.