In the title compound, C(16)H(12)Cl(2)O(2), the dichloro-phenyl and methoxy-phenyl groups are linked by a prop-2-en-1-one group. The C=C double bond is trans configured. The mol-ecule is not planar, as can be seen from the dihedral angle of 6.21 (7)° between the planes of the two rings. The crystal structure can be described by two types of crossed layers which are parallel to (110) and (10).