Problem to be solved. To provide a laminate film that has suitable heat sealability and easy openability, is less likely to cause blocking during film deposition and has high seal strength. Solution. The laminate film has (A) a surface layer and (B) a heat seal layer. The surface layer (A) contains a crystalline polyester in which the content of the crystalline polyester in resin components included in the surface layer (A) is 70 mass% or more. The heat seal layer (B) contains a crystalline polyester and a propylene-based copolymer resin in which the content of the crystalline polyester in resin components included in the heat seal layer (B) is 40 to 70 mass% and the content of the propylene-based copolymer resin is 30 to 60 mass%. The laminate film can realize suitable heat sealability and easy openability, and film processability.