On the Flanders Ultratop 50, "On the Floor" peaked at number one, remaining there for four weeks.[62] Meanwhile, on the Wallonia Ultratop 50, the single remained at number one for four weeks, before dropping to number four and then returning to number one for a fifth week.[63][64] In both territories, it is Lopez's first number one single in Belgium.[62][63] The Belgian Entertainment Association (BEA) certified the single gold, for selling 15,000 copies.[65] In Finland, "On the Floor" debuted at number one, giving Lopez her third number one in the country, behind "Love Don't Cost a Thing" (2001) and her debut single "If You Had My Love" (1999).[66] Selling platinum with over 12,000 copies, "On the Floor" was the second-best-selling single of 2011 in Finland[67] and in total it spent nine weeks at number one, making it Lopez's longest-serving number-one, as well as her longest-charting single in the country.[66][68]