An integrated antenna package structure including a chip, a circuit layer, an encapsulant, a coupling end, an insulating layer, a conductive connector, a dielectric substrate, and an antenna is provided. The circuit layer is electrically connected to the chip. The encapsulant is disposed on the circuit layer and covers the chip. The coupling end is disposed on the encapsulant. The insulating layer covers the coupling end. The insulating layer is not externally exposed. The conductive connector penetrates the encapsulant. The coupling end is electrically connected to the circuit layer by the conductive connection. The dielectric substrate is disposed on the encapsulant and covers the coupling end. The antenna is disposed on the dielectric substrate. A manufacturing method of an integrated antenna package structure is also provided.