Kiernan Dewsbury-Hall struck the only goal at Stamford Bridge late in the first half on a night 16-year-old Reggie Walsh became the youngest player to start a European game for Chelsea.
The Blues can become the first club to win all three of UEFA’s current competitions if they beat either two-time runners-up Fiorentina or Real Betis in Wroclaw on May 28.
Defender Marc Cucurella was the only player retained from the team that beat Liverpool in the Premier League last weekend as manager Enzo Maresca made sweeping changes to his line-up with an eye on Sunday’s crucial game at Newcastle.
The Italian has been criticised for his cautious tactics but he has fifth-placed Chelsea on course to qualify for the Champions League via a top-five finish in England.
Teenage midfielder Walsh made his debut off the bench in the 4-1 win in Stockholm a week ago as Chelsea seized control of the tie, but that result didn’t deter some 6,000 Djurgarden fans from making the trip to London for the second leg.
Dewsbury-Hall and Tyrique George forced saves from Djurgarden goalkeeper Jacob Rinne before the two Chelsea players combined to put the hosts in front in the 38th minute.
George threaded a pass through for Dewsbury-Hall who accelerated past a couple of defenders before sweeping in a crisp finish via the base of the post.
That goal killed off any remote hopes for Djurgarden, the first Swedish club to appear in a European semi-final since Gothenburg won the 1986-87 UEFA Cup.
Dewsbury-Hall had a chance to double his tally when he headed Malo Gusto’s cross straight at Rinne, but the visitors rarely threatened with the exception of a long-range shot from Daniel Stensson that was tipped over by Filip Jorgensen.
Chelsea haven’t won a major trophy since the 2021 Champions League, but they will be strong favourites to win their first silverware since Todd Boehly’s consortium took over from Roman Abramovich three years ago.
It is the first major title for Tottenham since it won the English League Cup in 2008, and its first European triumph since it won its second UEFA Cup — the equivalent of the Europa League now — in 1984.
Brennan Johnson squeezed in the winner at the end of the first half on Wednesday to help Spurs salvage a dismal season, in which it will finish near the bottom of the Premier League standings.
The title guarantees Spurs a spot in next season’s Champions League, and brings some much-needed relief for manager Ange Postecoglou after he struggled to keep his team on track all year.
Tottenham Hotspur’s Brennan Johnson, left, scores their first goal [Vincent West/Reuters]
The victory comes six years after Tottenham fell short against Liverpool in the Champions League final.
The defeat adds pressure on United coach Ruben Amorim, whose team sits in 16th place — just ahead of Tottenham — in the Premier League. The club will not play in any European competition next season.
United came close to equalising the match on Wednesday when a header by Rasmus Hojlund was cleared at the goal line by Tottenham’s Micky van de Ven in the 68th.
Deep into stoppage time, a header by Luke Shaw prompted a difficult save by Tottenham goalkeeper Guglielmo Vicario.
Tottenham Hotspur’s Micky van de Ven clears the ball off the line [Andrew Couldridge/Reuters]
It had been an even match, with neither team creating many significant scoring opportunities, until Tottenham got on the board in the 42nd minute after a cross by Pape Sarr into the area.
The ball ricocheted off Shaw and fell in front of Johnson, who seemed to get just enough of it to poke it across the goal line.
United pressed forward after conceding, but was not able to get the equaliser in front of a split crowd of nearly 50,000 at Athletic Bilbao’s San Mames Stadium.
Manchester United’s captain, Bruno Fernandes, looks dejected as he walks past the trophy after collecting his runners-up medal [Isabel Infantes/Reuters]
United had last won a trophy in the 2024 FA Cup, and its last European triumph was at the 2017 Europa League under manager Jose Mourinho.
The Red Devils lost all four matches against Tottenham this season and is winless against its rival in seven straight games, with the last six under Postecoglou.
United and Tottenham had met in just one previous final — the 2009 League Cup when Alex Ferguson’s United won 4-1 on penalties after a 0-0 draw.
Tottenham striker Son Heung-min, who came off the bench in the 67th, finally ended his decade-long trophy drought with Spurs.