The Nigerian was in fine form as the Premier League side defeated Sheffield United in the second semi final of the FA Cup to book a date with Arsenal
Hull will play Arsenal in the final on May 17 at Wembley.
The Tigers twice came from behind to win the high scoring encounter. Jose Baxter opened scoring for Sheffield in the 19th minute before Yannick Sagbo equalized three minutes before half time.
The League One side retook the lead two minutes later via Steven Scougall and went into the break with the advantage.
Hull came back firing soon after Aluko came on and equalized four minutes after the restart via Matt Fryatt and Tom Huddlestone gave them their first lead of the game on 54 minutes.
Stephen Quinn scored to make it 4-2 on 67 minutes in what seemed like the game was beyond Sheffield but Jamie Murphy's strike on 90 minutes meant that the Premier League side would endure a nervy finish as their opponents searched for the equalizer.
David Meyler put the game beyond reach for Hull in the third minute of added-on time for 5-3 as Steve Bruce's side marched on to the final where Arsenal awaits. The Gunners triumphed over Wigan on Saturday via penalties after regulation ended 1-1.
Aluko would hope to enter into the history books among the illustrious Nigerian players to have won the FA Cup. He would follow in the footsteps of such names like Daniel Amokachi, Nwankwo Kanu, Celestine Babayaro, John Utaka and John Obi Mikel.
It could also underline his push to be part of the Nigeria squad to the World Cup as Stephen Keshi continues to mull over his final team.