Arsenal stunned record eight times winners Lyon to reach the Champions League final for the first time in 18 years.
The Gunners, the only English team that this trophy has lifted when they prevail in 2007, will now meet holders of Holders Barcelona in Lisbon on 24 May. It was a brilliant representation in France by Renee Slese Side who came from Renee Sleers who started the perfect start when Chloe Kelly's early corner came back from Lyon Keeper Christiane Endler and in the net.
Mariona Caldentey then produced a moment of magic in the first half of the stop time to double the lead of Arsenal, which cut space to arrive at a shot in the far corner.
Arsenal struck again just after the restart when Alessia Russo came to 3-0 before Caitlin Foord added a fourth with Melchie Dumornay's Late strike small comfort for Lyon.
Arsenal -captain Kim Little praised Boss Slegers and said: 'Her calmness and calmness, her detail and her simplify, the words for the game are so and you see that in our performances.
“Barcelona is an incredible team and we are aware of their strengths, but I believe in this team and when we are at our best, we can beat everyone.”
Barca had driven in the final earlier in the day after overcoming the Super League leaders Chelsea with 8-2 ​​on Aggregate, romp into a 4-1 win in the second stage at Stamford Bridge.