Del. Code tit. 2 § 903
Every political subdivision may, through its governing body, acquire property, real or personal, for the purpose of establishing, constructing and enlarging airports and other air navigation facilities and may acquire, establish, construct, enlarge, improve, maintain, equip, operate and regulate such airports and other air navigation facilities and structures and other property incidental to their operation, either within or without the territorial limits of the political subdivision and within or without this State; may make, prior to any such acquisition, investigations, surveys and plans; may construct, install and maintain airport facilities for the servicing of aircraft and for the comfort and accommodation of air travelers; and may purchase and sell equipment and supplies as an incident to the operation of its airport properties. It may not, however, acquire or take over any airport or other air navigation facility owned or controlled by any other political subdivision of the State without the consent of such political subdivision. It may use for airport purposes any available property that is now or may at any time hereafter be owned or controlled by it. Such air navigation facilities as are established on airports shall be supplementary to and coordinated in design and operation with those established and operated by the federal and state governments.
2 Del. C. § 903