toronto u.s.-bound flight toronto main international airport delay wednesday afternoon due incident prompt authorities require passengers go customs second time spokeswoman say customs breach occur shortly 3:30 p.m. 2030 gmt terminal toronto pearson international airport spokeswoman beverly macdonald say email board hold situation investigate passengers reprocess u.s. customs say add breach resolve around p.m. 2200 gmt breach occur passengers deplane flight calgary inadvertently give access bypass door u.s. departures area westjet airlines ltd wja.to spokeswoman lauren stewart say email reuters terminal serve flight unite state alaska air group inc alk.n american airlines group inc aal.o delta air line inc dal.n westjet accord airport website toronto airport require extra security check 'customs breach