It took just seven minutes for Omar Marmoush to add to the hosts’ two-goal lead from the first leg, as he played a quick one-two and broke into the box before having a slice of fortune as Dan Burn’s challenge on the Egyptian saw the ball loop into Aaron Ramsdale’s net.
A perfectly-timed dive from James Trafford was required to deny Joe Willock moments later, but it wasn’t long until the Cityzens regained control with Tijjani Reijnders’ strike being tipped wide, before Malick Thiaw deflected a Rayan Ait-Nouri attempt behind.
Newcastle still pushed forward but were denied again by Trafford, who came out well to deny Anthony Gordon.
Moments after Kieran Trippier saw a free-kick routinely saved, he was unable to clear at the other end as Man City and Marmoush scored their second of the night, with the right-back looping Antoine Semenyo’s ball into the air for Pep Guardiola’s number seven to nod in.
The hosts had another just three minutes later with Burn being unfortunate again, as his tackle on Semenyo poked the ball into Reijnders’ path for the midfielder to finish.
There was further frustration for Eddie Howe before the break, as Gordon went off injured and Trafford produced another strong save to stop Sven Botman’s header.
Yoane Wissa squandered an opportunity within 30 seconds of being introduced as part of a triple Newcastle change ahead of the restart, shooting harmlessly wide after being played through by Sandro Tonali.
Reijnders then slid his shot wide at the other end after neat work from Marmoush to tee him up, and the travelling Newcastle supporters finally had something to shout about in the 62nd minute when Anthony Elanga glided into the box and curled his shot in off the post.
Harvey Barnes also had the ball in Trafford’s net but saw his goal ruled out due to Wissa straying offside in the build-up, shortly before squaring to Elanga for a golden opportunity that was wasted.
Marmoush blazed a shot over the crossbar with a hat-trick likely on his mind and Ramsdale denied two late efforts from Erling Haaland, but City still recovered from the disappointment of their draw against Tottenham Hotspur by securing a place in their first Carabao Cup final since 2021 by a large margin.
They’ll meet Arsenal in the final, while Newcastle suffered a third defeat from their last four matches across all competitions.
Flashscore Man of the Match: Omar Marmoush (Manchester City)