Spirit Airlines has postponed a vote on a merger with Frontier Airlines for the third time. The vote, originally set for July 8, is now scheduled for July 15. In a statement, the carrier said it wants its board of directors to continue discussions with Frontier and JetBlue Airways. Spirit’s board has encouraged shareholders to vote for the Frontier merger, while JetBlue has made a hostile offer for Spirit of $33.50 per share in cash. Frontier would acquire Spirit for $4.13 per share in cash and provide Spirit investors with 1.9126 shares of Frontier stock for every share they hold in Spirit. JetBlue CEO Robin Hayes said in a statement that the airline was “encouraged by our discussions with Spirit and are hopeful they now recognize that Spirit shareholders have indicated their clear, overwhelming preference for an agreement with JetBlue.”