The Transport Workers Union lost its bid to organize a dozen flight dispatchers at Allegiant Travel Co., the parent of discount flier Allegiant Air.
The National Mediation Board, the federal agency overseeing union elections, said six Allegiant dispatchers voted for no union, five voted for the TWU and one wrote in an undisclosed choice.
Because an organizing union must receive a majority of votes, this organizing case is declared dismissed.
Dispatchers, who must pass Federal Aviation Administration licensing exams, help map flight plans then follow flights en route to suggest changes as conditions change.
In December, flight attendants voted in favor of TWU representation, the first employee group within previously nonunion Allegiant to do so.