Alexis Sánchez's first Arsenal goal ensured their Champions League group stage qualification for a 17th successive season on a precarious night against Beşiktaş at the Emirates Stadium.
Sánchez's first-half strike in added time settled an edgy contest as Arsène Wenger's side navigated their way through a seventh group stage qualifier in the last nine seasons.
Like the first leg, Arsenal ended the match with 10 men after Mathieu Debuchy was sent off for two bookable challenges but Laurent Koscielny and Per Mertesacker expertly marshalled a watertight Gunners defence.
Arsenal rode their luck in the first-half when separate Debuchy and Jack Wilshere challenges inside the area were overlooked by the referee, however there were scant opportunities for the Beşiktaş frontman Demba Ba.
Sánchez struck on the stroke of half-time when his shot crept underneath the feeble Tolga Zengin to settle the tie. Ba was gifted a presentable chance in the 88th minute but failed to make contact from the cross.
Arsenal v Beşiktaş
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(01 of16)
LONDON, ENGLAND - AUGUST 27: Alexis Sanchez (left) of Arsenal shoots and scores past Tolga Zengin the Besiktas goalkeeper during the UEFA Champions League Qualifier 2nd leg match between Arsenal and Besiktas at the Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Shaun Botterill/Getty Images) (credit:Shaun Botterill via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(02 of16)
LONDON, ENGLAND - AUGUST 27: (R) Alexis Sanchez celebrates scoring Arsenal's goal with (L) Jack Wilshere during the UEFA Play Off match between Arsenal and Besiktas at Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images) (credit:Stuart MacFarlane via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(03 of16)
LONDON, ENGLAND - AUGUST 27: Alexis Sanchez shoots past Besiktas goalkeeper Tolga Zengin to score for Arsenal during the UEFA Play Off match between Arsenal and Besiktas at Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images) (credit:Stuart MacFarlane via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(04 of16)
LONDON, ENGLAND - AUGUST 27: Alexis Sanchez (2nd right) of Arsenal shoots and scores past Tolga Zengin the Besiktas goalkeeper during the UEFA Champions League Qualifier 2nd leg match between Arsenal and Besiktas at the Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Shaun Botterill/Getty Images) (credit:Shaun Botterill via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(05 of16)
LONDON, ENGLAND - AUGUST 27: (R) Alexis Sanchez celebrates scoring Arsenal's goal with (L) Jack Wilshere during the UEFA Play Off match between Arsenal and Besiktas at Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images) (credit:Stuart MacFarlane via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(06 of16)
LONDON, ENGLAND - AUGUST 27: (R) Alexis Sanchez celebrates scoring Arsenal's goal with (L) Jack Wilshere during the UEFA Play Off match between Arsenal and Besiktas at Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images) (credit:Stuart MacFarlane via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(07 of16)
LONDON, ENGLAND - AUGUST 27: Alexis Sanchez celebrates scoring Arsenal's goal during the UEFA Play Off match between Arsenal and Besiktas at Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images) (credit:Stuart MacFarlane via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(08 of16)
LONDON, ENGLAND - AUGUST 27: Alexis Sanchez celebrates scoring Arsenal's goal during the UEFA Play Off match between Arsenal and Besiktas at Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images) (credit:Stuart MacFarlane via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(09 of16)
LONDON, ENGLAND - AUGUST 27: (L) Jack Wilshere and (R) Mathieu Debuchy celebrate the Arsenal goal, scored by Alexis Sanchez during the UEFA Play Off match between Arsenal and Besiktas at Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images) (credit:Stuart MacFarlane via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(10 of16)
LONDON, ENGLAND - AUGUST 27: Alexis Sanchez (3rd right) of Arsenal shoots and scores past Tolga Zengin the Besiktas goalkeeper during the UEFA Champions League Qualifier 2nd leg match between Arsenal and Besiktas at the Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Shaun Botterill/Getty Images) (credit:Shaun Botterill via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(11 of16)
LONDON, ENGLAND - AUGUST 27: Alexis Sanchez (R) of Arsenal celebrates with team mate Santi Cazorla of Arsenal after scoring during the UEFA Champions League Qualifier 2nd leg match between Arsenal and Besiktas at the Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Shaun Botterill/Getty Images) (credit:Shaun Botterill via Getty Images)
Arsenal FC v Besiktas JK - UEFA Champions League Qualifying Play-Offs Round: Second Leg(12 of16)
LONDON, ENGLAND - AUGUST 27: Alexis Sanchez (R) of Arsenal celebrates with team mate Santi Cazorla of Arsenal after scoring during the UEFA Champions League Qualifier 2nd leg match between Arsenal and Besiktas at the Emirates Stadium on August 27, 2014 in London, United Kingdom. (Photo by Shaun Botterill/Getty Images) (credit:Shaun Botterill via Getty Images)
FBL-EUR-C1-ARSENAL-BESIKTAS(13 of16)
Arsenal's Chilean striker Alexis Sanchez (R) celebrates scoring the opening goal with Arsenal's English midfielder Jack Wilshere (L) during the UEFA Champions League qualifying round play-off second-leg football match between Arsenal and Besiktas' at the Emirates Stadium in London on August 27, 2014. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images) (credit:BEN STANSALL via Getty Images)
FBL-EUR-C1-ARSENAL-BESIKTAS(14 of16)
Arsenal's Chilean striker Alexis Sanchez (C) celebrates scoring the opening goal with Arsenal's English midfielder Jack Wilshere (L) and Arsenal's French defender Mathieu Debuchy (R) during the UEFA Champions League qualifying round play-off second-leg football match between Arsenal and Besiktas' at the Emirates Stadium in London on August 27, 2014. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images) (credit:BEN STANSALL via Getty Images)
FBL-EUR-C1-ARSENAL-BESIKTAS(15 of16)
Arsenal's Chilean striker Alexis Sanchez (R) is denied by Besiktas' Turkish goalkeeper Tolga Zengin (L) during the UEFA Champions League qualifying round play-off second-leg football match between Arsenal and Besiktas' at the Emirates Stadium in London on August 27, 2014. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images) (credit:BEN STANSALL via Getty Images)
FBL-EUR-C1-ARSENAL-BESIKTAS(16 of16)
Arsenal's Chilean striker Alexis Sanchez (R) misses an effort on goal during the UEFA Champions League qualifying round play-off second-leg football match between Arsenal and Besiktas' at the Emirates Stadium in London on August 27, 2014. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images) (credit:BEN STANSALL via Getty Images)