Valencia reached the Copa del Rey final for the third time this century as Goncalo Guedes' strike secured a 2-1 aggregate semi-final win over Athletic Bilbao.
The Portugal international's powerful effort two minutes before half-time sealed a 1-0 second-leg win at Mestalla to send Los Che through.
Winners in 2008 and 2019, Valencia will now contest the final against either Real Betis or Rayo Vallecano, who meet in the second leg of their semi-final on Thursday.
Athletic had eliminated Barcelona and Real Madrid from this season's competition but could not lift themselves after Guedes' goal and were unable to reach the final for the third year running.
After 40 tense minutes of few chances, Inaki Williams was played through on goal by Iker Muniain but dithered on the ball and was denied by goalkeeper Julen Agirrezabala.
Just two minutes later, a free-kick was cleared to Guedes 25 yards from goal, he took a touch into space and blasted a superb strike well beyond the reach of Giorgi Mamardashvili.
Athletic pushed for a way back in the second half, but their final product was lacking. Williams miscontrolled at just the wrong moment, and Muniain cut inside and curled a shot a yard over.
A fierce free-kick from Inigo Martinez was well held by Mamardashvili, who had mostly been protected superbly by a disciplined back three.
Athletic had a few late set-pieces to send towards the Valencia box, but there was little to unnerve the jubilant home fans.
What does it mean? Valencia seize chance to rescue season
Valencia are ninth in LaLiga, 11 points outside the European places, so the Copa has represented one of the few bright spots in their season.
The chance to win the trophy for the ninth time and qualify for next season's Europa League is therefore a hugely welcome one for Jose Bordalas.
For Athletic, who had performed so well to eliminate Barca and Madrid in the previous rounds, this will feel like a missed opportunity.
Guedes' golden touch
In a contest of few clear-cut chances, it fell to Guedes to settle things with a spectacular effort from outside the box.
It was one of just four shots on target throughout, but it was worthy of winning any match.
More Copa misery for Muniain
Athletic's captain and inspiration, Muniain was exceptional in the earlier rounds to drag his side towards a possible third final in a row.
However, he could not influence proceedings at Mestalla, creating only one goalscoring chance throughout and failing to test Mamardashvili.
What's next?
Valencia host Granada in LaLiga on Saturday, while Athletic are at home to Levante next Monday.
Celtic 3-1 RB Leipzig: Kuhn double inspires Hoops to Champions League fightback
Celtic's Nicolas Kuhn scored twice as the Bhoys fought back to clinch an impressive 3-1 victory over RB Leipzig in the Champions League on Tuesday.
Coming off a goalless draw at Atalanta on matchday three, Celtic recorded their second home win in the Champions League this season, moving up to 13th in the standings on seven points.
They had to do things the hard way, falling behind to Christoph Baumgartner's close-range header after a corner came off Cameron Carter-Vickers in the 23rd minute.
However, Kuhn levelled in the 35th minute with a superb curling effort from the edge of the box, then tapped into an open net for his brace shortly before half-time.
Benjamin Sesko and Baumgartner went close to equalising after the break but Celtic's birthday boy, 38-year-old goalkeeper Kasper Schmeichel, pulled off a couple of fine saves before Reo Hatate sealed victory with a close-range finish in the 72nd minute.
Leipzig's wait for a first point in the Champions League this campaign continues, with their chances of reaching the knockout stages fading after four defeats in as many games.
Data Debrief: Celtic flying high
Celtic may have been humiliated in a 7-1 defeat to Borussia Dortmund on matchday two, but that was a mere blip in what has so far been an impressive European campaign.
Their total of seven points is already their most in a Champions League campaign since 2012-13, when they collected 10, while they last netted more goals (currently nine) in a Champions League/European Cup campaign in 1977-78 (13).
Borussia Dortmund 1-0 Sturm Graz: Malen late show extends Champions League home record
Donyell Malen netted an 85th minute winner to hand Borussia Dortmund a narrow 1-0 victory over winless Sturm Graz in the Champions League on Tuesday.
A dominant showing from Nuri Sahin's side made it three wins from four games so far in the competition, moving them up to fourth in the new 36-team league.
Dortmund started brightly at the Westfalenstadion but were unable to find a breakthrough, with Marcel Sabitzer, Maximilian Beier and Serhou Guirassy going close.
They recorded 13 shots in the first half, their most in the opening 45 minutes of a Champions League match without scoring since Opta recorded this data (since 2003-04).
But Sturm Graz offered a threat on the break after the interval, with Jusuf Gazibegovic curling an effort narrowly wide before Mika Biereth missed a header from close range.
However, Dortmund left it late to seal the win as Malen pounced on Emanuel Aiwu's loose pass before being sent through by Guirassy, with the Dutchman rattling the ball beyond
Kjell Scherpen to seal another Champions League home win.
Data Debrief: Home comforts
While Sahin has come under fire for Dortmund's displays away from home, there is no arguing with his record at the Westfalenstadion.
He became the first Dortmund coach since the Bundesliga was founded to win each of his first seven home matches in charge (all competitions), while BVB are now unbeaten in 13 consecutive Champions League home games (W9 D4) - an extended club record.
Malen’s winner was timed at 84:56, Dortmund’s latest winning goal in a Champions League match since Kevin Groskreutz netted against Marseille in December 2013.
Lille 1-1 Juventus: French side's resistance broken after second-half penalty
Lille held firm to hold Juventus to a 1-1 draw at home on Tuesday in the Champions League, extending their unbeaten run to nine matches.
Jonathan David had fired the French club ahead in the first half, before Dusan Vlahovic scored a second-half penalty to level things up and leave both sides on seven points after four matches.
Things didn't start well for the home side, with Teun Koopmeiners thinking he had scored the opener for Juventus only for it to be disallowed for offside.
David put Lille ahead just three minutes later with their first chance of note in the match. The Canadian turned home to convert from a slick counter-attacking move.
Goalkeeper Lucas Chevalier had to be on form to keep the home side ahead before half-time, sensationally saving a Vlahovic half-volley 10 minutes before the break. Koopmeiners, meanwhile, had another effort chalked off in the 42nd minute.
Juventus upped the pressure in the second half, with Chevalier also upping things and pulling off two impressive saves in quick succession.
But ultimately, the Lille resistance was broken by a Vlahovic penalty on the hour after Francisco Conceicao had been fouled by Benjamin Andre.
The result leaves Juventus 10th and Lille 12th in the Champions League table.
Data debrief: Lille looking good for qualification
After drawing 1-1, Lille are unbeaten in nine matches in all competitions and three matches in the Champions League.
The French side had beaten Atletico Madrid and Real Madrid in back-to-back European games.
They now have a seven-point buffer between themselves and the bottom eight in the league table.
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