Alexander Lacazette scored a brace with Bukayo Saka and Nicolas Pepe also on the scoresheet as Arsenal trounced Slavia Prague 4-0 to advance to the Europa League Semi-finals.
The win according to Arsenal manager Mikel Arteta was an "important win in a crucial moment" as they booked a date with Villareal in the last four.
In what was potentially a difficult night in Prague, the Gunners produced one of their best performances of the campaign leaving many fans asking themselves why they haven't replicated that form in the domestic campaign.
With the tie evenly poised at 1-1 before kick off, Arteta’s Arsenal got off the blocks fast scoring their goals in the 18th, 21st and 24th minute of the game.
Ivorian Nicolas Pepe squeezed home at the near post to open the scoring in the 18th minute before Alexandre Lacazette converted a penalty three minutes later following a foul on Bukayo Saka.
Saka coolly swept in the third as Arsenal swept aside their miserable Czech opponents.
Frenchman Lacazette would put matters to rest when he smashed his second low into the net in the 77th minute of the game.
The Gunners will face Villarreal - managed by former Arsenal boss Unai Emery - in the last four.
Meanwhile, Manchester United will meet Roma in the other semi-final after Ole Gunnar Solskjaer's side comfortably saw off Granada 2-0 at Old Trafford. The Red Devils got their goals through Edinson Cavani and an own goal by Jesus Vallejo.
United who have lost all four semi-finals in which they have featured during Solskjaer's reign, including in this competition last season, will be aiming to reach the final in a competition they lifted in 2017.
In Rome, Edin Džeko's second-half strike secured Roma's UEFA Europa League semi-final spot against a dominant Ajax. Brian Brobbey's cute second-half goal for Ajax ignited a tense match, but Edin Džeko pounced to see Roma over the finish line.
At the Madrigal, Paco Alcácer and Gerard Moreno struck in the first half as Villarreal sealed their place in the semi-finals despite Mislav Oršić's late reply for Dinamo Zagreb. The Yellow Submarine will now meet Arsenal in the semis.