Thirteen fans have been given football banning orders after bottles and wooden seats were thrown during trouble between Burnley and Arsenal supporters.
A steward was hit but no-one was injured in the clash after Arsenal's 1-0 win at Turf Moor on 18 September.
Lancashire Police said a 14th fan was fined while two teenage boys were given community resolutions.
PC Dan Fish, of Burnley Police, said: "The disorder between rival fans was completely unacceptable."
"It was only through good fortune that no-one was seriously injured," he added.
In a statement, Burnley Football Club, who were relegated from the Premier League on Sunday, said 13 men had received life bans from entering Turf Moor after their "shocking and disgraceful" actions.