The cheapest way to the airport. The Platanus shuttle to the main bus station is 16 minutes quicker for €8 more, which is not worth it at this party size.
Bus 37 to the Sukoišan terminal
37 · Promet SplitPickup, hours & luggage
Boards at. Sukoišan bus terminal (Autobusni terminal Sukoišan), bus 37 signed Trogir; get off at Zračna luka
EUR 2 for the Split–Kaštela single, valid 90 minutes, bought through the Promet Split app before you board — the airport's own advice, since no machine or counter stands at the stop. Paying the driver on board costs EUR 4.
Hours. From the Sukoišan terminal 04:00 to 00:15 on weekdays, every 20 minutes for most of the day; 04:30 to 00:15 on Saturdays, Sundays and holidays, every 30 minutes on Sundays. 46 minutes to the airport stop.