Philip Zimmermann Sorensen, 20, was at the Champions League match between Spurs and Copenhagen on Tuesday, November 4, when he carried out the acts.
Sorensen was held in custody until his court hearing.
He appeared at Highbury Corner Magistrates’ Court on Thursday, November 6.
He pleaded guilty to assault by beating and attempted criminal damage to a LGBTQ+ flag.
Sorensen was fined £120 and told to pay a £48 surcharge towards victim services.
