Caernarfon Town joined Flint Town United in reaching the final with victories over lower-tier opponents in the semi-finals.
Flint secured their place in the showpiece on Saturday with an emphatic 5-1 victory over Tier 3 side Bangor City, while Caernarfon completed the line-up a day later with a 2-1 win against Tier 2 outfit Rhyl at Colwyn Bay.
The two top-flight clubs will now meet at Rodney Parade in Newport, ensuring the famous trophy returns to the JD Cymru Premier after a competition that had threatened to produce one of the biggest upsets in its long history.
For Caernarfon, the occasion will be historic.
The north-west club have never previously appeared in a Welsh Cup final and will arrive in Newport believing they have a genuine chance of lifting the trophy.
They already hold the upper hand over Flint this season, having beaten them 5-2 away from home earlier in the campaign before sharing the spoils in the return fixture.
Their semi-final, however, was far from straightforward.
Rhyl — flying the flag for Tier 2 — made life difficult for the Cofis during a cagey first half and largely succeeded in frustrating their higher-ranked opponents for long spells.
But the breakthrough arrived early in the second period when Brad Young continued his impressive scoring run.
Young, who has been in prolific form in recent weeks, turned home a corner from Sion Bradley five minutes after the restart to register his fourth goal in three matches and give Caernarfon the platform they needed.
The Cofis then strengthened their grip on the tie midway through the half when substitute Zach Clarke made an immediate impact from the bench.
Clarke struck in the 73rd minute to double the advantage and leave Rhyl with a mountain to climb.
To their credit, the Lilywhites refused to give up and kept pushing forward in search of a route back into the contest.
Their persistence was rewarded deep into stoppage time when Ben Lightfoot produced a superb strike from the edge of the penalty area in the sixth minute of added time to pull a goal back.
By then, though, the damage had already been done and Caernarfon held on to seal a place in the final for the first time in their history.
Twenty-four hours earlier, Flint Town United had booked their own long-awaited return to the Welsh Cup final with a dominant display against Bangor City.
Bangor arrived at the semi-final dreaming of making history.
The Tier 3 side had enjoyed a remarkable campaign, losing just once and drawing twice in 36 matches across all competitions, and were hoping to become the first club from the third tier to reach the final.
Instead, Flint ruthlessly demonstrated the gulf in class between the divisions.
Lee Fowler’s team seized control of the contest inside the opening half hour and never looked back.
Darren Stephenson set the tone with an early breakthrough after just six minutes, before leading scorer Elliott Reeves struck twice in quick succession during the first half to give the Silkmen a commanding 3-0 advantage by the 33rd minute.
The result was effectively decided before the interval, allowing Flint to manage the game comfortably after the break.
They extended their lead further in the 68th minute when Michael Burke added a fourth, and defender Ben Woollam then made it five shortly afterwards, heading in from a corner to register his first goal for the club.
Bangor did at least manage a late consolation, with Adam Long heading home his first goal for the club ten minutes from time, but the result had long since been settled.
The comprehensive win means Flint will contest the Welsh Cup final for the first time since their famous triumph in 1954, ending a 72-year wait to return to the biggest stage in Welsh domestic football.
Manager Lee Fowler admitted his side had been largely in control throughout the tie but praised Bangor for their impressive journey to the last four.
“It was quite comfortable, but congratulations for Bangor on their run in the competition. Sometimes it's a bit of a different level when you get into the Welsh Premier League,” said Fowler.
“I thought my lads were brilliant and it is great to get into the final – the first for 72 years. The goals were all quite similar and that’s a credit to the coaches for their work on the training field.
“At 3-0 it was comfortable, but we got a little bit sloppy at times in the second half. I thought Ben Hughes was outstanding and it worked bringing Elliott Reeves back into the side with his two goals.
“Whoever we play in the final, they are both good teams. We’ve had some good games with Caernarfon this season and we’ve watched Rhyl quite a few time – we won’t underestimate either of them.”
Flint now know exactly who stands between them and a first Welsh Cup triumph in more than seven decades, while Caernarfon will be aiming to crown their historic run by lifting the trophy for the first time.
With both clubs enjoying strong seasons and already familiar with each other’s strengths, the final in Newport promises to be a compelling all-Cymru Premier clash.
