Commercially successful in his native Hong Kong, To's films have regularly appeared at international festivals, most notably in Europe and North America. Six of To's films have been featured at the Cannes Film Festival: Breaking News premiered as an Out-of-Competition midnight screening in 2004; Election was shown in Competition in 2005; its sequel, Election 2 (a.k.a. Triad Election) was screened in Out-of-Competition midnight screenings in 2006, and Triangle was screened in Out-of-Competition midnight screenings in 2007; Vengeance competed for the prestigious Palme D'Or in 2009; Blind Detective was screened in Out-of-Competition midnight screenings in 2013.
At the Venice International Film Festival, Throw Down was screened Out-of-Competition in 2004; Exiled was shown in Competition at the festival in 2006; Mad Detective was shown in Competition in 2007; Life Without Principle was shown in Competition in 2011.