Provided is a laminated polyester film which is inhibited from causing interference fringes when used as the base film of an antireflection film and which is excellent in the adhesion, particularly moist heat resistant tight adhesion, to a hard coat layer made by using a radiation-curable resin. A laminated polyester film which comprises a layer (S) made by using a polyester and a layer (C) containing a polyester resin (A) having a fluorene skeleton, wherein the moist heat resistant adhesion index of the surface of the layer (C) is 3 to 5 as determined by a method disclosed in the description, paragraphs [0118] and [0119].
