When did aircraft stop serving as minelayers?
Short answerThey did not; aerial minelaying remains possible, but it is discussed and advertised less often than other aviation roles.
NotesAircraft have continued to serve as minelayers, even though the capability receives less attention than other aviation roles. Foxo's question comes from finding few mine options in published armament lists for third-generation jets. High delivery speed is offered as one reason that some jets lacked both mine and torpedo capability. The absence of mines from a particular aircraft's armament list therefore does not establish that aerial minelaying disappeared.