The governing authorities of any municipality are authorized, in their discretion, to exercise all the powers conferred on boards of supervisors with reference to acquiring land to be used as an airport or landing place for airplanes, and erect suitable buildings thereon, and equip and maintain such airport. They may acquire airports or landing places already established. Such airport or landing place may be situated beyond the limits of such municipality. The governing authorities of a municipality may lease, or sublease, or contract the maintenance and operation of, any airport or landing place for airplanes to the United States of America, or any department or agency thereof, or to any person, firm, association, or corporation, for the purpose of training aviators and for other legal purposes. The county wherein such airport may be situated is hereby authorized to make such contribution to the cost of acquiring the necessary land for such airport, the placing of same in suitable condition, and the equipping and maintenance thereof, as the board of supervisors of such county and the governing body of such municipality may mutually agree upon.

The governing authorities of the several municipalities of the state in or near which the state university or a state supported four year college, now or hereafter in existence, are or shall be located, are authorized, in their discretion, to assist the board of trustees of state institutions of higher learning, the state building commission or any other state agency by contributing municipal funds to be used in the acquisition of a site for an airport, erecting suitable buildings and building or extending runways, equipping, maintaining and operating an airport, which shall be available for the use of said university or colleges, as the case may be, and for the general public.

Any such municipality which offers assistance in the acquisition of a site for constructing suitable buildings, building or extending runways or maintaining and operating such airports for the university or other state supported colleges, as the case may be, may or may not be in the county in which the university or the state supported four year college is located, provided the airport is not more than ten miles from said municipality.