1 The cost of a Boeing 737 varies widely depending on which model or the features included. 2  The company lists the price of a 737 between $78 to $155 million depending on the model, customer options, cabin fittings and size. The cost of a Boeing 737 varies widely depending on which model or the features included. 2  The company lists the price of a 737 between $78 to $155 million depending on the model, customer options, cabin fittings and size.